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Irish Weather Statistics

  • #2
    Registered Users Posts: 12,135 ✭✭✭✭ sryanbruen


    I've gathered Ireland's % of LTA rainfall for every month since March 2011 here in this graph below. Yes, they're not Grange's :P, they're Ireland's.

    Since March 2011, there has been three months with 200% or more of the average rainfall, June 2012, February 2014 and December 2015.

    There has been four months with 50% or less of the average rainfall, March 2011, March 2012, September 2014 and October 2016.

    YGslPk2.png

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



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Comments

  • #2


    Ireland's below average temperature months since August 2010 with anomalies (Mean temperature in brackets)

    Nov 2016: -1.8 (5.5)
    Apr 2016: -1.4 (7.2)
    Mar 2016: -1.0 (6.0)
    Feb 2016: -0.5 (4.7)
    Sep 2015: -1.0 (12.2)
    Aug 2015: -1.3 (14.0)
    Jul 2015: -1.2 (14.0)
    Jun 2015: -0.7 (13.0)
    May 2015: -1.2 (9.9)
    Apr 2015: -0.2 (8.4)
    Mar 2015: -0.9 (6.1)
    Feb 2015: -0.8 (4.4)
    Jan 2015: -0.5 (4.8)
    Aug 2014: -1.3 (14.0)
    Nov 2013: -0.8 (6.5)
    Jun 2013: -0.1 (13.6)
    May 2013: -0.9 (10.2)
    Apr 2013: -1.4 (7.2)
    Mar 2013: -3.4 (3.6)
    Feb 2013: -0.5 (4.7)
    Nov 2012: -1.2 (6.1)
    Oct 2012: -1.6 (8.6)
    Sep 2012: -1.0 (12.2)
    Jul 2012: -1.0 (14.2)
    Jun 2012: -0.6 (13.1)
    May 2012: -0.1 (11.0)
    Apr 2012: -1.6 (7.0)
    Aug 2011: -1.7 (13.6)
    Jul 2011: -0.8 (14.4)
    Jun 2011: -1.5 (12.2)
    Jan 2011: -2.0 (3.3)
    Dec 2010: -5.7 (-0.4)
    Nov 2010: -2.2 (5.1)
    Oct 2010: -0.1 (10.1)
    Aug 2010: -1.1 (14.2)

    I have highlighted the top 5 most extreme cold months and one of them is interestingly November 2016 :cool:.

    I will be updating this post every time a new colder than normal month takes place.

    Number of colder than normal months by year:

    2010: 7 (inc. January-March)
    2011: 4
    2012: 7
    2013: 6
    2014: 1
    2015: 9
    2016: 4

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    I was just wondering if anyone here is able to answer this?

    When we say above or below average temperatures, rainfall, any weather, etc.
    How is the average worked out and how many years does it go back to, to work out the average?
    Is it always since records began or maybe the last 20 or 30 years?

    Thanks in advance.


  • #2


    pedigree 6 wrote: »
    I was just wondering if anyone here is able to answer this?

    When we say above or below average temperatures, rainfall, any weather, etc.
    How is the average worked out and how many years does it go back to, to work out the average?
    Is it always since records began or maybe the last 20 or 30 years?

    Thanks in advance.

    The average is based on a certain 30 year average. The most recent average we use is the 1981-2010 average. Before that, we used the 1971-2000 average and before that, the 1961-1990 average etc. So the next 30 year average will be 1991-2020.

    Of course, not all stations do it this way. For example, my station Grange (just as an example) uses the 1986-2016 average because my station's records go back to only 1986.

    These are Ireland's average temperatures for each month (1981-2010 average) (in case anybody finds these useful for any calculations):

    January: 5.3
    February: 5.2
    March: 7.0
    April: 8.6
    May: 11.1
    June: 13.7
    July: 15.2
    August: 15.3 (Yes, August 0.1c hotter than July :eek:)
    September: 13.2
    October: 10.2
    November: 7.3
    December: 5.3

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    sryanbruen wrote: »
    Ireland's below average temperature months since August 2010 with anomalies (Mean temperature in brackets)

    Nov 2016: -1.8 (5.5)
    Apr 2016: -1.4 (7.2)
    Mar 2016: -1.0 (6.0)
    Feb 2016: -0.5 (4.7)
    Sep 2015: -1.0 (12.2)
    Aug 2015: -1.3 (14.0)
    Jul 2015: -1.2 (14.0)
    Jun 2015: -0.7 (13.0)
    May 2015: -1.2 (9.9)
    Apr 2015: -0.2 (8.4)
    Mar 2015: -0.9 (6.1)
    Feb 2015: -0.8 (4.4)
    Jan 2015: -0.5 (4.8)
    Aug 2014: -1.3 (14.0)
    Nov 2013: -0.8 (6.5)
    Jun 2013: -0.1 (13.6)
    May 2013: -0.9 (10.2)
    Apr 2013: -1.4 (7.2)
    Mar 2013: -3.4 (3.6)
    Feb 2013: -0.5 (4.7)
    Nov 2012: -1.2 (6.1)
    Oct 2012: -1.6 (8.6)
    Sep 2012: -1.0 (12.2)
    Jul 2012: -1.0 (14.2)
    Jun 2012: -0.6 (13.1)
    May 2012: -0.1 (11.0)
    Apr 2012: -1.6 (7.0)
    Aug 2011: -1.7 (13.6)
    Jul 2011: -0.8 (14.4)
    Jun 2011: -1.5 (12.2)
    Jan 2011: -2.0 (3.3)
    Dec 2010: -5.7 (-0.4)
    Nov 2010: -2.2 (5.1)
    Oct 2010: -0.1 (10.1)
    Aug 2010: -1.1 (14.2)

    I have highlighted the top 5 most extreme cold months and one of them is interestingly November 2016 :cool:.

    I will be updating this post every time a new colder than normal month takes place.

    Number of colder than normal months by year:

    2010: 7 (inc. January-March)
    2011: 4
    2012: 7
    2013: 6
    2014: 1
    2015: 9
    2016: 4

    Updated with the rest of 2010, 2009 and 2008 added now.

    Nov 2016: -1.8 (5.5)
    Apr 2016: -1.4 (7.2)
    Mar 2016: -1.0 (6.0)
    Feb 2016: -0.5 (4.7)
    Sep 2015: -1.0 (12.2)
    Aug 2015: -1.3 (14.0)
    Jul 2015: -1.2 (14.0)
    Jun 2015: -0.7 (13.0)
    May 2015: -1.2 (9.9)
    Apr 2015: -0.2 (8.4)
    Mar 2015: -0.9 (6.1)
    Feb 2015: -0.8 (4.4)
    Jan 2015: -0.5 (4.8)
    Aug 2014: -1.3 (14.0)
    Nov 2013: -0.8 (6.5)
    Jun 2013: -0.1 (13.6)
    May 2013: -0.9 (10.2)
    Apr 2013: -1.4 (7.2)
    Mar 2013: -3.4 (3.6)
    Feb 2013: -0.5 (4.7)
    Nov 2012: -1.2 (6.1)
    Oct 2012: -1.6 (8.6)
    Sep 2012: -1.0 (12.2)
    Jul 2012: -1.0 (14.2)
    Jun 2012: -0.6 (13.1)
    May 2012: -0.1 (11.0)
    Apr 2012: -1.6 (7.0)
    Aug 2011: -1.7 (13.6)
    Jul 2011: -0.8 (14.4)
    Jun 2011: -1.5 (12.2)
    Jan 2011: -2.0 (3.3)
    Dec 2010: -5.7 (-0.4)
    Nov 2010: -2.2 (5.1)
    Oct 2010: -0.1 (10.1)
    Aug 2010: -1.1 (14.2)
    Mar 2010: -1.1 (5.9)
    Feb 2010: -2.4 (2.9)
    Jan 2010: -2.9 (2.3)
    Dec 2009: -1.9 (3.4)
    Jan 2009: -0.7 (4.5)
    Dec 2008: -0.4 (4.9)
    Oct 2008: -0.5 (9.7)
    Sep 2008: -0.3 (12.9)
    Apr 2008: -0.3 (8.3)
    Mar 2008: -0.3 (6.7)

    Number of colder than normal months by year

    2009: 2
    2008: 5

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    Just opening this thread so as to have a place for others to post and keep on record Irish weather stats on a ongoing level. I noticed last night that Syran posted some incredibly detailed stats on the 'Spring' thread which no doubt took a lot of work and research to compile. I think such stats would be better placed in a dedicated thread like this, because they will be lost and forgotten in the other thread once numerous posts come in discussing the first 17.0c being reached in late March or April.

    I'll start off the thread with a trivial stat. Up to yesterday, Ireland as a whole has seen 38% less rainfall since the start of the year than in the same period last year.


  • #2


    sryanbruen wrote: »
    Wettest March day in many places yesterday since 2004 (when Valentia recorded 42.0mm on the 11th)

    Roches Point - 39.5mm
    Moore Park - 34.0mm
    Shannon Airport - 32.4mm
    Cork Airport - 32.0mm
    Valentia Observatory - 30.2mm
    Mace Head - 29.3mm
    Newport - 26.3mm
    Sherkin Island - 26.1mm
    Athenry - 24.5mm
    Claremorris - 22.7mm
    21st March 2013 was very wet in places. Cork AP had 42.0mm but there were plenty places wetter.

    The stats are great but I found it misleading. No denying it was very wet on the 3rd in some areas, wettest midnight to midnight March day at Shannon since 1962


  • #2


    axe2grind wrote: »
    21st March 2013 was very wet in places. Cork AP had 42.0mm but there were plenty places wetter.

    The stats are great but I found it misleading. No denying it was very wet on the 3rd in some areas, wettest midnight to midnight March day at Shannon since 1962

    Cork Apt had 41.2mm on Mar 21/13, so yep, a wet day, but the recent event was wetter on a more national level in general.


  • #2


    Winter 2016/17 compared to Winter 2015/16 in Ireland, temperature wise

    Winter 2015/16

    December - 8.2
    January - 5.8
    February - 4.7
    Winter - 6.2

    Winter 2016/17

    December - 6.6
    January - 6.0
    February - 6.3
    Winter - 6.3

    Interestingly, Winter 2016/17 was +0.1c warmer than Winter 2015/16 was in Ireland.

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    Mod Note: I have move sryan's posts into this thread, but, I can't change the order as they are always sorted chronologically.


  • #2


    DOCARCH wrote: »
    Mod Note: I have move sryan's posts into this thread, but, I can't change the order as they are always sorted chronologically.

    Not a problem :), I appreciate the move very much.

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    axe2grind wrote: »
    21st March 2013 was very wet in places. Cork AP had 42.0mm but there were plenty places wetter.

    The stats are great but I found it misleading. No denying it was very wet on the 3rd in some areas, wettest midnight to midnight March day at Shannon since 1962

    I see your confusion no worries. I forgot about 21st March 2013 :D. Probably because it was the worst day of my life and I don't want to remember it. I dread March 21st every year. But you're right anyway.

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    These are great Stats syran.

    Have you any for Summers of 2007 - 2012.

    In Sligo I remember these being incredibly bad cold wet and dull.

    I wonder was it the same countrywide.

    Interestingly I am sure that 2016/17 Winter the Northwest was one of the driest places in Ireland. March will be our first > 100mm month for rainfall in 5 or 6.

    That temperature anomally charts great. I was going to do one with the rainfalls but Im not as dedicated as yourself.


  • #2


    pauldry wrote: »
    These are great Stats syran.

    Have you any for Summers of 2007 - 2012.

    In Sligo I remember these being incredibly bad cold wet and dull.

    I wonder was it the same countrywide.

    Interestingly I am sure that 2016/17 Winter the Northwest was one of the driest places in Ireland. March will be our first > 100mm month for rainfall in 5 or 6.

    That temperature anomally charts great. I was going to do one with the rainfalls but Im not as dedicated as yourself.

    Thank you :). If I have time tomorrow, I will put up stats on those Summers, it won't be a problem at all for me to do them for you.

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    what do you mean by "Ireland's"? How is it calculated?


  • #2


    what do you mean by "Ireland's"? How is it calculated?

    All Irish stations' means whether be it rainfall, temperature or sunshine divided by the number of stations.

    The calculating is very tedious.

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    sryanbruen wrote: »
    All Irish stations' means whether be it rainfall, temperature or sunshine divided by the number of stations.

    The calculating is very tedious.

    How are you doing it? In excel? It could be worth spending some time to learn a programming language or GIS, will be very useful when you go to university.

    Just a tip, since it's interesting stuff but you need to watch out for bias when you average like that. If you look at the map of stations they are not evenly distributed, they are clustered and in an east-west band from Dublin to Mayo. Also quite a few stations are along the coast, which will affect how representative they are. Keep up the good work!


  • #2


    sryanbruen wrote: »
    All Irish stations' means whether be it rainfall, temperature or sunshine divided by the number of stations.

    The calculating is very tedious.

    Using all these
    http://www.met.ie/about/weatherobservingstations/rainmap.asp

    or just the synoptic stations

    and inc Northern Ireland?


  • #2


    axe2grind wrote: »
    sryanbruen wrote: »
    All Irish stations' means whether be it rainfall, temperature or sunshine divided by the number of stations.

    The calculating is very tedious.

    Using all these
    http://www.met.ie/about/weatherobservingstations/rainmap.asp

    or just the synoptic stations

    and inc Northern Ireland?

    Synoptic stations. No cause Northern Ireland is part of the UK and is part of calculating their means for a month.

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    sryanbruen wrote: »
    All Irish stations' means whether be it rainfall, temperature or sunshine divided by the number of stations.

    The calculating is very tedious.

    How are you doing it? In excel? It could be worth spending some time to learn a programming language or GIS, will be very useful when you go to university.

    Just a tip, since it's interesting stuff but you need to watch out for bias when you average like that. If you look at the map of stations they are not evenly distributed, they are clustered and in an east-west band from Dublin to Mayo. Also quite a few stations are along the coast, which will affect how representative they are. Keep up the good work!

    I understand the bias 100% which is why I find making these stats a bit of a headache. No I don't use Excel, I use a calculator. I'm making it more tedious for myself haha, I should start using Excel when doing this.

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    How about months with above average temperatures. I thinking about July 2013 when the mean temperature at Shannon Airport alone was over 18c. Or that balmy September 14 and December 15 to mention.


  • #2


    Jpmarn wrote: »
    How about months with above average temperatures. I thinking about July 2013 when the mean temperature at Shannon Airport alone was over 18c. Or that balmy September 14 and December 15 to mention.

    Ok I'll do them also, since you're so intrigued :).

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    sryanbruen wrote: »
    I understand the bias 100% which is why I find making these stats a bit of a headache. No I don't use Excel, I use a calculator. I'm making it more tedious for myself haha, I should start using Excel when doing this.
    Switch to excel right now :D You could also use OpenOffice if you don't have excel. It will make things much easier for these sort of calculations, and you can do lot's of tests like removing certain stations with just a click.


  • #2


    Here ya go Pauldry, here are Ireland's mean temperature and anomalies for each Summer from 2007-2012

    Summer 2012

    June - 13.1 (-0.6)
    July - 14.2 (-1.0)
    August - 15.7 (+0.4)
    Summer - 14.3 (-0.4)

    Summer 2011

    June - 12.2 (-1.5)
    July - 14.4 (-0.8)
    August - 13.6 (-1.7)
    Summer - 13.4 (-1.3)

    Summer 2010

    June - 15.1 (+1.4)
    July - 15.7 (+0.5)
    August - 14.2 (-1.1)
    Summer - 15.0 (+0.3)

    Summer 2009

    June - 14.9 (+1.2)
    July - 15.3 (+0.1)
    August - 15.4 (+0.1)
    Summer - 15.2 (+0.5)

    Summer 2008

    June - 13.4 (-0.3) (Oops I didn't realise this was a cold month... I guess that can be added to the list of below normal temperature months)
    July - 15.5 (+0.3)
    August - 15.5 (+0.2)
    Summer - 14.8 (+0.1)

    Summer 2007

    June - 14.5 (+0.8)
    July - 14.8 (-0.4)
    August - 15.1 (-0.2)
    Summer - 14.8 (+0.1)

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    Updated now with 2006 and 2007 added.

    Months with mean temperatures below normal in Ireland

    Nov 2016: -1.8 (5.5)
    Apr 2016: -1.4 (7.2)
    Mar 2016: -1.0 (6.0)
    Feb 2016: -0.5 (4.7)
    Sep 2015: -1.0 (12.2)
    Aug 2015: -1.3 (14.0)
    Jul 2015: -1.2 (14.0)
    Jun 2015: -0.7 (13.0)
    May 2015: -1.2 (9.9)
    Apr 2015: -0.2 (8.4)
    Mar 2015: -0.9 (6.1)
    Feb 2015: -0.8 (4.4)
    Jan 2015: -0.5 (4.8)
    Aug 2014: -1.3 (14.0)
    Nov 2013: -0.8 (6.5)
    Jun 2013: -0.1 (13.6)
    May 2013: -0.9 (10.2)
    Apr 2013: -1.4 (7.2)
    Mar 2013: -3.4 (3.6)
    Feb 2013: -0.5 (4.7)
    Nov 2012: -1.2 (6.1)
    Oct 2012: -1.6 (8.6)
    Sep 2012: -1.0 (12.2)
    Jul 2012: -1.0 (14.2)
    Jun 2012: -0.6 (13.1)
    May 2012: -0.1 (11.0)
    Apr 2012: -1.6 (7.0)
    Aug 2011: -1.7 (13.6)
    Jul 2011: -0.8 (14.4)
    Jun 2011: -1.5 (12.2)
    Jan 2011: -2.0 (3.3)
    Dec 2010: -5.7 (-0.4)
    Nov 2010: -2.2 (5.1)
    Oct 2010: -0.1 (10.1)
    Aug 2010: -1.1 (14.2)
    Mar 2010: -1.1 (5.9)
    Feb 2010: -2.4 (2.9)
    Jan 2010: -2.9 (2.3)
    Dec 2009: -1.9 (3.4)
    Jan 2009: -0.7 (4.5)
    Dec 2008: -0.4 (4.9)
    Oct 2008: -0.5 (9.7)
    Sep 2008: -0.3 (12.9)
    Jun 2008: -0.3 (13.4)
    Apr 2008: -0.3 (8.3)
    Mar 2008: -0.3 (6.7)
    Aug 2007: -0.2 (15.1)
    Jul 2007: -0.4 (14.8)
    Mar 2006: -0.7 (6.3)

    Colder than normal months by year

    2016: 4
    2015: 9
    2014: 1
    2013: 6
    2012: 7
    2011: 4
    2010: 7
    2009: 2
    2008: 6
    2007: 2
    2006: 1

    NOTE: Remember that these anomalies are by using the 1981-2010 average for every month. Some of them would not be colder than normal if I was using the 1961-1990 or 1971-2000 averages.

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    Months with mean temperatures above average in Ireland (2013-2017)

    Feb 2017: +1.1 (6.3)
    Jan 2017: +0.7 (6.0)
    Dec 2016: +1.3 (6.6)
    Oct 2016: +0.3 (10.5)
    Sep 2016: +0.8 (14.0)
    Aug 2016: +0.2 (15.5)
    Jul 2016: +0.2 (15.4)
    Jun 2016: +1.1 (14.9)
    May 2016: +0.9 (12.0)
    Jan 2016: +0.6 (5.8)
    Dec 2015: +2.9 (8.2)
    Nov 2015: +1.5 (8.8)
    Oct 2015: +0.1 (10.3)
    Dec 2014: +0.3 (5.6)
    Nov 2014: AVERAGE (7.3)
    Oct 2014: +0.8 (11.0)
    Sep 2014: +0.9 (14.1, not as warm as you think Jpmarn :rolleyes:)
    Jul 2014: +1.2 (16.4)
    Jun 2014: +0.7 (14.4)
    May 2014: +0.5 (11.6)
    Apr 2014: +1.4 (10.0)
    Mar 2014: +0.3 (7.3)
    Feb 2014: +0.3 (5.5)
    Jan 2014: +0.2 (5.4)
    Dec 2013: +1.4 (6.7)
    Oct 2013: +1.7 (11.9)
    Sep 2013: +0.5 (13.7)
    Aug 2013: +0.4 (15.7)
    Jul 2013: +2.6 (17.8)
    Jan 2013: AVERAGE (5.3)

    NOTE: All AVERAGE temperature months will be included with the warm months.

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    It could be worth spending some time to learn a programming language or GIS

    I think Syran could do worse that learn some basic 'R' programming. Very handy for some serious number crunching, and once you have a workable function written up, then it can be used again and again. Having said that, there is nothing you can do in 'R' that you cannot do in Excel. It is pretty amazing how this basic spreadsheet software can be manipulated for good statistical analysis.


  • #2


    Months with mean temperatures above average in Ireland updated with 2012, 2011 and 2010 included now.

    Feb 2017: +1.1 (6.3)
    Jan 2017: +0.7 (6.0)
    Dec 2016: +1.3 (6.6)
    Oct 2016: +0.3 (10.5)
    Sep 2016: +0.8 (14.0)
    Aug 2016: +0.2 (15.5)
    Jul 2016: +0.2 (15.4)
    Jun 2016: +1.1 (14.9)
    May 2016: +0.9 (12.0)
    Jan 2016: +0.6 (5.8)
    Dec 2015: +2.9 (8.2)
    Nov 2015: +1.5 (8.8)
    Oct 2015: +0.1 (10.3)
    Dec 2014: +0.3 (5.6)
    Nov 2014: AVERAGE (7.3)
    Oct 2014: +0.8 (11.0)
    Sep 2014: +0.9 (14.1)
    Jul 2014: +1.2 (16.4)
    Jun 2014: +0.7 (14.4)
    May 2014: +0.5 (11.6)
    Apr 2014: +1.4 (10.0)
    Mar 2014: +0.3 (7.3)
    Feb 2014: +0.3 (5.5)
    Jan 2014: +0.2 (5.4)
    Dec 2013: +1.4 (6.7)
    Oct 2013: +1.7 (11.9)
    Sep 2013: +0.5 (13.7)
    Aug 2013: +0.4 (15.7)
    Jul 2013: +2.6 (17.8)
    Jan 2013: AVERAGE (5.3)
    Dec 2012: +0.1 (5.4)
    Aug 2012: +0.4 (15.7)
    Mar 2012: +1.6 (8.6)
    Feb 2012: +1.9 (7.1)
    Jan 2012: +1.2 (6.5)
    Dec 2011: +0.6 (5.9)
    Nov 2011: +2.3 (9.6)
    Oct 2011: +1.4 (11.6)
    Sep 2011: +0.5 (13.7)
    May 2011: +0.1 (11.2)
    Apr 2011: +2.4 (11.0)
    Mar 2011: +0.4 (7.4)
    Feb 2011: +1.6 (6.8)
    Sep 2010: +0.4 (13.6)
    Jul 2010: +0.5 (15.7)
    Jun 2010: +1.4 (15.1)
    May 2010: +0.2 (11.3)
    Apr 2010: +0.3 (8.9)

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    Ireland's all-time maximum temperatures for each month of the year

    January - 18.5c at Glasnevin, Co. Dublin on the 10th in 1998

    February - 18.1c at Phoenix Park, Co. Dublin on the 23rd in 1891

    March - 23.6c at Trinity College, Co. Dublin on the 28th in 1965

    April - 25.8c at Glenties, Co. Donegal on the 26th in 1984

    May - 28.4c at Ardfert, Co. Kerry on the 31st in 1997 (28.3c was recorded at the same place on the 25th in 2012.... only 0.1c short of the record)

    June - 33.3c at Kilkenny Castle, Co. Kilkenny on the 26th in 1887

    July - 32.3c at Elphin, Co. Roscommon on the 19th in 2006

    August - 31.5c at Ballybrittas, Co. Laois on the 3rd in 1975 & Oak Park, Co. Carlow on the 2nd in 1995

    September - 29.1c at Clongowes Wood College, Co. Kildare on the 1st in 1906

    October - 25.2c at Clongowes Wood College, Co. Kildare on the 3rd in 1908

    November - 20.1c at Dooks, Co. Kerry on the 1st in 2015

    December - 18.1c at Peamount, Co. Dublin on the 2nd in 1948

    Originally sourced from

    http://www.met.ie/climate-ireland/extreme_maxtemps.pdf

    With November's maximum edited to the recent record in 2015.

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    Ireland's all-time minimum temperatures for each month of the year

    January: -19.1c at Markree Castle, Co. Sligo on the 16th in 1881

    February: -17.8c at Mostrim, Co. Longford on the 7th in 1895

    March: -17.2c at Markree Castle, Co. Sligo on the 3rd in 1947

    April: -7.7c at Markree Castle, Co. Sligo on the 15th in 1892

    May: -5.6c at Phoenix Park, Co. Dublin on the 4th in 1945 & Glenties, Co. Donegal on the 4th in 1979

    June: -3.3c at Clonsast, Co. Offaly on the 1st in 1962

    July: -0.3c at Mostrim, Co. Longford on the 8th in 1889

    August: -2.7c at Rathdrum, Co. Wicklow on the 30th in 1964

    September: -3.0c at Hospital, Co. Limerick on the 19th in 1986

    October: -8.3c at Markree Castle, Co. Sligo on the 31st in 1926

    November: -11.5c at Clonroche, Co. Wexford on the 29th in 2010

    December: -17.5c at Straide, Co. Mayo on the 25th in 2010

    Originally sourced from

    http://www.met.ie/climate-ireland/extreme-mintemps.pdf

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



  • #2


    A year that seems to never be talked about is 2004 but 2004 like any other year did have some interesting moments and records.

    2004 started off in January but January was nothing to ride home about as it was just a rather sunny, mixed January with rather mild and wet conditions in places.

    February, after a wet start during the first few days, was a very settled month with plenty of sunshine. It was the "February 2008" for Ireland. If you did not get the reference there, February 2008 recorded sunshine totals of over 120 hours, even 130-140 hours in England & Wales and was easily their sunniest February on record. February 2004 was easily Ireland's sunniest February on record. February recorded an average sunshine total of 108 (3.7 hours per day on average) hours which was 165% of Ireland's average February sunshine. After an exceptionally mild start with temperatures reaching 16.7c at Ardee on the 3rd, it became much colder with severe frost being a common occurrence. February 2004 was a very good Winter month but unfortunately, it's largely forgotten.

    March started off very cold, continuing on from the severe frost in February. Dublin Airport recorded a grass minimum temperature of -12.6c on the 2nd. Despite the severe frosts at the beginning, however, it was a rather mild month. It was a rather wet month but not remarkably so. Like February, it was another exceptionally sunny month though not as sunny as March 2003 in many places. Belmullet nevertheless recorded its sunniest March on record with a total of 163 hours of sunshine which is 160% of its average March sunshine.

    April was very forgettable with no extremes whatsoever recorded during the month. For example, there was an absence of very high maximums and very low minimum temperatures. It was a rather dull, mild and mixed rainfall April. March 2004 recorded totals normally expected to be recorded in an April so April 2004 was duller than March in many places including Belmullet.

    May had a notable dry spell during the middle of the month with little to no rainfall and some pleasantly warm temperatures along with blue skies at times. Other than that, May was nothing exciting to mention with rather sunny, warm and dry conditions.

    June was a weird month as it was dull in the north but sunny in the south. I think the 14th (see picture below) perfectly captures the north-south split in terms of sunshine.

    vYJKP2L.png

    Malin Head recorded no sunshine at all on the 14th but Cork Airport recorded a stunning day with 16 hours of sunshine, a full day of blue skies.

    On the 22nd/23rd June, a storm brought very heavy rain and strong winds to much of western Europe, including Ireland. Winds gusted to 65mph in Germany and 2 people were killed because of it. Many others were badly injured. A tornado struck the village of Micheln, Germany tearing roofs from several houses and injuring at least 6 people. John F Kennedy Park, Co. Wexford recorded a daily fall of 57.0mm during this period, its wettest June day on record, at least until 2012. Valentia Observatory recorded 30.8mm on the 22nd and Cork Airport recorded 44.0mm on the same day.

    Dublin Airport had a mean of 12 knots during June which meant that June 2004 was its windiest June on record. Despite the storm and the heavy rain on the 26th, June 2004 was a very warm month and sunny in most places.

    June was not alone in the storms of Summer 2004 as July 2004 brought another storm but more towards the English Channel and France than Ireland. This storm brought thundery rain and very strong winds. More than 100,000 homes were affected by blackouts as gales cut power supplies over a wide area of southwest England and south Wales, while some record-breaking daily rainfalls were measured on both sides of the Channel. Wittering, near Peterborough, recorded 108mm in the 24-hour period up to 1700UTC on the 8th, while in Brittany, 72mm fell in Brest on the 7th, greatly
    exceeding the previous record for a daily fall in July there of 46mm. Off the Brittany coast, 88mm was measured on the same day on l'île d'Ouessant, where winds gusted to 64 knots (74mph); gusts of over 60mph were also recorded in coastal areas of southern England and Wales. As the depression drifted slowly eastwards and filled on the 9th, an unstable northwesterly airstream followed, producing heavy and sometimes violent thunderstorms; hail damage to vineyards was reported from areas of western France. Most of Ireland was unaffected by the storm, although Rosslare measured the highest gust of the month early on the 8th, 45 knots (52mph).

    Other than that, July 2004 was nothing interesting as it was fairly cool, wet and sunny.

    August 2004 was a very showery and thundery month but very warm and muggy at the same time, literally the dream combination for many weather enthusiasts. It was not like that all the time, however. For example, here's some beach goers enjoying themselves at Portmarnock, Co. Dublin on the 2nd.

    fafdoA3.png

    Dublin Airport recorded 4 days during August with daily falls of 15mm or more and each of these was associated with a thunderstorm. Thunderstorms were recorded across Ireland on 14 days of the month.

    On the 16th, severe flooding devastated the village of Boscastle in Cornwall, England following exceptionally heavy rain- due in part to the remnants of tropical storm Bonnie. Nearby Otterham measured 200.4mm of rain in a 24-hour period, while Lesnewth recorded 64.8mm in an hour. This flooding was almost on the anniversary of similar destruction of the Devon village of Lynmouth in August 1952. Meanwhile on the 18th, landslides trapped 57 motorists on a road in the Scottish Highlands, following days of heavy rain in the area.

    Dublin Airport recorded 32.8mm on the 18th associated with thunderstorms, the most severe thunderstorms since July 1985.

    All in all, August was a month of many weather events whether be it hot days, strong winds, thunderstorms, blue skies, floods etc.

    September was another very warm, muggy, wet and rather sunny month again. Before 2011, this was the last September with some very warm temperatures for September (25c or more). Waterford recorded 25.6c on the 6th, the warmest September day since 1991. A few days before hand, this "red sky" took place at dawn on the 3rd. The picture was taken at Leixlip, Co. Kildare and people said it was a sign for some good weather and it sure was. The second week of September brought very warm and sunny days.

    LTLK2QY.png

    October 2004 was a very cool, wet and sunny October. Up until the last few days, October was a very forgettable month with plenty of rain and sunshine and the odd dry spell mid-month.

    An exceptionally deep depression of central pressure 953hPa moved close to the south coast on the 27th, becoming almost stationary while filling slowly over subsequent days. A tidal surge, in combination with very high tides and southeasterly gales, led to considerable coastal flooding along southern and southeastern coasts. Cork was particularly badly affected and many properties close to the city centre were inundated; river levels on the Lee near Cork reached their highest values since 1962. Significant coastal erosion was caused, particularly in Counties Waterford, Wexford and Wicklow. During the morning of the 27th, a tornado lifted a helicopter ten feet off the deck of the Kinsale Bravo gas platform (bottom right). Bands of frontal rainfall
    associated with the depression produced over 50mm across much of Munster and south Leinster in the period 27th/28th, with over 100mm recorded in places, leading to significant flooding along the rivers Suir and Blackwater in particular.

    Here's a picture of Cork City flooded on the night of the 27th:

    t12cF8t.png

    October 2004 was Casement Aerodrome's second wettest October on record at the time with only 2002 wetter. Casement Aerodrome also recorded 44.0mm on the 20th, its wettest October day on record at that time, obviously it was smashed in 2011 by October 24th's record breaking flood. Mullingar's grass minimum temperature of -7.6°C on the 20th (right before the heavy rain pushed in) was the lowest such value for October at the station since records began there in 1950. The 19th into the 20th was one of the coldest October nights ever recorded in Ireland. Despite being so wet, it was funnily enough Mullingar's sunniest October on record.

    November 2004 was an abnormally calm, settled and mild month. It was a complete turn around from October's cold, wet and sunny conditions. As a result with very dry but mild conditions, it was often dull. In fact, it was the dullest November on record in Ireland. At no station did pressure fall below 1000hPa at all during November. Mean pressure values for November were 10-12hPa above average:

    558Eyo2.png

    November recorded only 61% of Ireland's average November rainfall. Maximum temperatures did not fall below 10c all month at Valentia Observatory bar the 19th. November recorded only 72% of Ireland's average November sunshine (using the 1971-2000 average) or 68% (using the 1981-2010 average). Snowfall was recorded from the 18th-20th at many stations. It's amazing how mild November 2004 was in Ireland but how cold it was in the UK.

    December 2004 was a very typical mild, westerly dominated month but it was rather dry and sunny. There was one outstanding event of this month, however and it's the only event I think many people here remember for 2004 (if they do remember 2004 :rolleyes:) and that was the White Christmas of 2004. In the last 50 years, the Christmas of 2004 was the whitest Christmas with many stations in the UK and Ireland having a White Christmas. Here's a typical scene at the Wicklow Mountains on Christmas Day 2004:

    tZqs6cC.jpg

    Weather and climate site - https://www.ukandirelandclimate.com/ (advised to view on PC, not optimised for mobile)

    Photography site - https://www.sryanbruenphotography.com/



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