Your daily forecasts from Boards.ie weather forum (NO CHAT)

Wednesday, 10 August, 2016

Forecasts for Ireland


TODAY ... Cloudy with a few sunny breaks, occasional rain in Connacht and Ulster (2-5 mm), patchy light drizzle elsewhere but some dry spells, highs 15-18 C.

TONIGHT ... Overcast, some fog or mist, light rain in parts of the north, lows about 10 to 12 C.

THURSDAY ... Partly cloudy south, a little warmer, overcast with showers north, and highs 18-21 C.

FRIDAY ... Mostly cloudy, some intervals of light rain north, becoming quite warm across the south. Lows 10-13 C and highs 18-22 C.

SATURDAY ... Partly cloudy, a few showers in northern and central counties, lows near 11 C and highs 18 to 21 C.

SUNDAY ... Sunny intervals, hazy, warm. Lows 11-14 C and highs 20-23 C.

MONDAY ... Sunny with cloudy intervals, warm. Lows 12-15 C and highs near 21 C south and east, to 25 C west and inland north.

TUESDAY ... Increasing cloud, very warm, risk of showers or thunderstorms by late in the day. Lows 15-18 C and highs 22-26 C.

WEDNESDAY ... Breezy, showers or thunderstorms, cooler. Highs near 18 C.

FURTHER OUTLOOK ... The rest of August according to current guidance will average near normal or slightly above normal at times for temperature and there will be about the average amount of rainfall for the period, possibly a bit less in the southeast.

Over in BRITAIN, most of this forecast period will produce similar results but the very warm spell early next week is likely to be hot in parts of England where highs could reach or exceed 30 C. The thundery breakdown mid-week could then produce some severe storms there.

My local weather on Tuesday was quite unusual, drizzle was observed for several hours (from about 0900 to 1400h), not much of a radar signature and definitely very small droplets but wetting the ground, and it was rather warm considering the lack of sun at 20 C. We are now expecting a few days of sunny and very warm weather.

Friday, 12 August, 2016

Forecasts for Ireland


TODAY ... Mostly cloudy north, some rain at times, morning sunny intervals then increasing cloud and warm south, a few showers could develop by evening if the northern rain band holds together long enough, some places may have a dry day however. Highs 19-22 C.

TONIGHT ... Spotty showers moving away from the southeast with partial clearing to follow, lows 10-13 C.

SATURDAY ... A mixture of cloud and sun with the risk of a few isolated showers in the north mostly, lows 10-13 C and highs 18-21 C.

SUNDAY ... Hazy sunshine, warmer, lows 10-13 C and highs 19-23 C warmest inland due to weak sea breezes on most coasts. There could be persistent low cloud or fog banks near south coast however.

MONDAY ... Hazy sunshine, very warm. Lows 12-16 C and highs 20-25 C, once again warmest inland and especially towards the west as more of a southeast breeze will develop.

TUESDAY ... Increasing cloud, very warm and humid, showers and thunderstorms likely by afternoon west, evening southeast, spreading to Ulster by later overnight hours. Lows 14-18 C and highs 21-24 C.

WEDNESDAY and THURSDAY are looking rather showery and cooler in west to northwest winds, highs near 18 C. About 10-20 mm of rain is likely in this interval (including what falls on late Tuesday) although there is potential for a few locations to get 30 to 50 mm. There could be a good amount of sunshine in Munster and south Leinster by Thursday.

FRIDAY will bring another surge of warm, humid air and a few more intervals of rain to follow, but this should clear away before the weekend or at least by the first part of Saturday in the last areas to clear in the northeast, and then it should once again become warm and dry for a few days, possiibly as long as a week according to some guidance this morning.

The warm spell next week will be more like a heat wave in parts of southern England where highs could reach 30 C, and the thundery breakdown there will probably arrive Wednesday.

My local weather on Thursday was sunny and very warm, so we took advantage of the good conditions and went sight-seeing in the nearby mountains, visibility was at least 100 kms. It's clear tonight here and I'm hoping to see a few of the Perseids after midnight, went out briefly already and noticed that Mars has made quite a bit of progress towards Saturn (and Antares below it) in the past two weeks, making that triangle in the southern sky a lot smaller now; the half moon is in that general part of the sky also (if you have clear skies tonight there, the Moon will be located just above Saturn, with Mars a brighter object off to the right of them).

Sunday, 14 August, 2016

Forecasts for Ireland


TODAY ... Rather cloudy with a few sunny breaks developing in the south and west by afternoon. Highs 18-20 C in light winds.

TONIGHT ... Some clear intervals developing inland, rather cloudy around coastal counties, mist or fog patches, lows 11-15 C.

MONDAY ... A mixture of cloud and sun, warmer, highs 21-24 C inland, more chance of low cloud and offshore fog banks around coastal east and south with highs there about 18 C.

TUESDAY ... Increasing cloud, some showers developing by evening near south and west coasts, warm. Lows 13-17 C and highs 21-24 C.

WEDNESDAY ... Occasional showers, cooler, Lows 12-15 C and highs 17-20 C.

FURTHER OUTLOOK ... After some breaks on Thursday, another interval of showers or rain late in the week may persist into Saturday 20th, then gradual improvement but the pattern now looks rather variable with further intervals of showers at intervals of 2-3 days with the odd dry day in the mix, and temperatures not far from normal late August values of 19-20 C.

Highest temperatures in southern England are now expected to be around 27 mid-week, but it will be humid enough to give a humidex in the low 30s there.

My local weather on Saturday was sunny and hot, with a high near 30 C.

Tuesday, 16 August, 2016

Forecasts for Ireland

ADVANCE ALERT for developing heavy rainfall situations on Wednesday and again on Friday-Saturday. Both systems could produce 20-40 mm of rain and spot flooding.


TODAY ... Sunny intervals, very warm, hazy with increasing cloud by afternoon. Highs 21-25 C. Some low cloud and drifting fog near outer southwest coasts.

TONIGHT ... Overcast except for some clear intervals in east Ulster, showers and a few thunderstorms slowly advancing from southwest towards central counties and Connacht, some 5-15 mm amounts. Likely remaining dry in east and northeast. Warm and close, lows 13-17 C.

WEDNESDAY ... Heavy showers and some embedded thunderstorms slowly advancing further east, some 20-40 mm falls possible in parts of midlands, inland southeast, watch for spot flooding on roadways. Highs 18-20 C.

THURSDAY ... During the early morning hours the heavy showers will likely diminish considerably before pushing further east, overnight lows 10-13 C, then some sunny intervals may develop briefly with highs 18-21 C before cloud increases from an advancing Atlantic low off to the southwest; this may spread some rain into west Munster by evening.

FRIDAY ... Windy and wet, 20-30 mm rainfalls possible, winds east to southeast 40-70 km/hr, lows near 12 C and highs near 17 C. Becoming foggy over hills by late in the day. It's not looking like a very good day for any outdoor activities.

SATURDAY ... Rain followed by scattered showers, strong winds shifting to southwest 40-70 km/hr as the Atlantic low drifts north through western counties (where winds may briefly pause as the centre passes), lows near 11 and highs 17 to 19 C, further rainfalls of 10-15 mm.

SUNDAY ... Some minor improvements to mainly cloudy with isolated showers and winds falling off to moderate, lows near 10 C and highs near 19 C.

FURTHER OUTLOOK ... More disturbed weather appears likely around Tuesday and Wednesday of next week with another strong low possible then. Some improvement may then develop for a few days but the very long range charts show a tropical remnant low in the vicinity near the end of the month (low confidence in that).

Over in BRITAIN the warm spell will be a little stronger (26-28 C) and the thundery breakdown will arrive rather gradually through late Wednesday and will persist to some extent on Thursday; the Friday-Saturday event will produce similar weather to the above forecast for Ireland across Wales, northern England and Scotland but it will be somewhat warmer in southern England with scattered showers and a southerly wind rising to 60 km/hr.

My local weather continued sunny and very warm on Monday with a high near 26 C. Heavy rain is developing across the lower Great Lakes and may bring some flooding to parts of Ohio, southern Ontario and upstate New York today. Severe heat continues along the east coast of the U.S.; Washington D.C. has hit 100 (F) the past three days with humidex values near 45 C.

A strong cold front brought severe wind gusts and squally showers to Rio on Monday, before that arrived it was 33 C briefly. It appears that lightning set off some bush or forest fires in the vicinity also.

Thursday, 18 August, 2016

Forecasts for Ireland


TODAY ... The last of the rain will slowly clear from east Ulster this morning, and the rest of Ireland will have mostly cloudy skies with a few sunny breaks developing around mid-day. Then the first wave of moisture from a new Atlantic depression will reach southwest Munster by evening. Highs 18-20 C and rather humid, light winds generally.

TONIGHT ... Heavy rain with a risk of thunderstorms will spread along the south coast accompanied by gale force southeast wind gusts at times, expect 15-25 mm (potential for isolated heavier amounts), but further inland amounts will be progressively lower during the night, albeit with the same gusty winds and some fog developing, lows about 12 C. Winds southeast 40-70 km/hr in exposed locations.

FRIDAY ... Some of the heavier rain will slowly spread north in Leinster, amounts will probably be about 15-20 mm inland trending down towards the north and along the east coast, and also lighter amounts in other regions although some isolated heavy showers are possible. The strong winds will ease slightly for many as the low approaches the west coast, but strong gusts to about 80 km/hr from south veering southwest are likely in Cork, Waterford and Kerry. Highs 15-19 C.

SATURDAY ... Intervals of rain, some rather heavy but more typically light and showery, eventually an additional 20-30 mm could fall in some central and northern counties. Winds becoming southwest 40-70 km/hr. Lows near 13 C and highs near 18 C.

SUNDAY ... Variable cloud during the morning, showers ending for a time, then another surge of moderate to heavy rain from west later in the day, as winds increase again to 50-80 km/hr from south to southwest. Rather warm and humid, lows near 14 C and highs near 20 C.

MONDAY ... Partly cloudy, breezy, isolated showers. Lows near 12 C and highs near 19 C.

OUTLOOK ... Another fairly strong frontal system will pass on Tuesday with more rain and gusty winds, then improvements are likely later in the week with only small amounts of rain and some sunny intervals, highs near 20 C. The system we were discussing for Saturday 27th is now looking weaker and will likely dissolve over southwest England before doing too much, so the slightly unsettled conditions may just continue in Ireland while a few thunderstorms roll into western Britain and hot, humid air spreads north from France into eastern England. There could be heavy storms as a result in some parts of Britain. The last few days of August at this point are looking rather warm with some sunny intervals, highs near 23 C.

My local weather continues very dry and hot with highs near 29 C. I will be heading out at 0230h local time here (1030h there) to see the full moon partially eclipsed (a penumbral eclipse event).

The weather for Rio has been generally warm and dry the past few days and will continue that way today and Friday, part of Saturday then just before the closing ceremonies a very strong front will arrive with much colder air rushing in from the southwest. Highs until then will be near 30 C but temperatures will fall quickly to near 15 C on Sunday with heavy rain, thunderstorms and strong wind gusts perhaps as strong as 110 km/hr in the region -- I think the marathon events will be interesting to watch just for that reason (unless they move up to Saturday to avoid this). The air mass covering southern Brazil and Uruguay will be cold enough for hill snow and night frosts but the coldest it will likely get in Rio is about 12 C by Monday morning as everyone is leaving town. (then it will clear up and be spectacular next week, oh well).

Saturday, 20 August, 2016

Forecasts for Ireland


TODAY ... Low pressure will now track across north Leinster and by tonight will be located near southwest Scotland. Counties north of this track mainly in Ulster will have rather light east winds increasing to moderate northerly, periods of rain and highs near 15 C. Counties near the track will have light and variable winds, fog, drizzle then heavier showers and increasing northwest winds this afternoon, highs near 16 C. The southern half of the country will continue to have strong southwest to west winds of 50-80 km/hr, squally showers and the risk of a thunderstorm with highs near 18 C. Rainfalls will average about 10 mm in the north to 25 mm west-central to east and northeast, and about 15-20 mm near the south coast.

TONIGHT the showers will become light and drizzly then some fog will develop, winds will slowly abate and lows will reach about 11 C.

SUNDAY could start out partly cloudy in the east, overcast west, then rain will develop as winds increase to south-southwest 40-60 km/hr. Rather warm and humid with highs reaching 20 C.

MONDAY will have some variable cloudiness and some overcast periods with a few more showers likely, lows near 14 C and highs near 20 C.

TUESDAY will see a band of rain slowly returning from the south and this could become heavy in parts of south Leinster, moderate into the midlands and east Munster, but further west and north it could remain dry longer. Rather warm, lows near 14 C and highs near 22 C.

WEDNESDAY to FRIDAY are currently looking rather warm and although somewhat unsettled there could be longer intervals of sunshine too, with highs reaching 23 or even 24 C.

FURTHER OUTLOOK calls for showers and thunderstorms around the weekend of 27th-28th, further unsettled but warm weather, highs staying above normal in the low to mid 20s.

During the period, BRITAIN will gradually become very warm or even hot, and quite humid, with highs in southern England sometimes approaching 30 C. Heavy and possibly severe storms could develop in a frontal zone across western Britain at times (this could also spread back into southeast Ireland at times but the prospects look more certain for intense storms in Wales and southwest England in the coming week). Anyone with travel plans to France around middle of next week should be forewarned that it could be excessively hot and humid there (around 36 C possibly with heat index above 40).

My local weather is also hot and sunny, Friday's high was about 32 C at my location and 36 C further inland. Portland Oregon hit 38 C. There have been very severe forest and bush fires in parts of California for several weeks now and we are getting elevated smoke layers in our sunsets making them quite vivid. The eastern half of North America has recently been closer to average August warmth of 28-31 C.

Monday, 22 August, 2016

Forecasts for Ireland


TODAY ... Mostly cloudy although some brighter spells likely in the northwest, however some light rain currently moving slowly through the southeast will stall there and begin to edge back west and north by late in the day; about 5 to 10 mm could fall in south Leinster. Highs generally 17-20 C warmer in the inland northwest and central counties.

TONIGHT ... Rain will become heavier while drifting further north into the midlands and central Leinster, with 10-15 mm potential. Further west and north it will remain largely dry but overcast. Lows 12-15 C.

TUESDAY ... Rain in Leinster will gradually taper off to drizzle before ending, other regions will be partly cloudy and rather warm. Highs 17-21 C, warmer inland west.

WEDNESDAY and THURSDAY will be generally bright and rain-free other than some very brief showers over parts of north Connacht and west Ulster, and it will be rather warm with lows 10-13 C and highs 19-22 C.

FRIDAY will continue mainly dry but mostly cloudy with perhaps a slight increase in the western shower activity, lows 11-14 C and highs 17-20 C.

SATURDAY may bring a spell of heavy rain especially for Munster and the south midlands where 20-30 mm is indicated. Lows near 14 C and highs held down to 17 or 18 C in the rain (parts of Ulster could be a bit warmer as rain holds off there).

SUNDAY will be cloudy and cool with lows of 8-10 C and highs near 16 C.

FURTHER OUTLOOK calls for unsettled and seasonable temperatures as August ends, highs will be about 17-19 C.

Over in BRITAIN the mid-week warm spell will produce hot and humid conditions with just a few isolated showers or thunderstorms, highs 27-30 C.

My local weather on Sunday was partly cloudy and somewhat cooler at 24 C, a line of showers passed without dropping any rain at my location and now we're into a much cooler northwesterly flow, expecting a high of only 19 C today (Monday).

Wednesday, 24 August, 2016

Forecasts for Ireland


TODAY ... A few sunny intervals for most, more cloud in western counties and a chance of a few light afternoon showers there. Rather warm, highs 18-21 C.

TONIGHT ... Clear intervals leading to fog patches before dawn, showers may continue in parts of the northwest however. Lows 7-12 C.

THURSDAY ... Partly cloudy, a few isolated showers, warm. Highs 18-21 C.

FRIDAY ... Partly cloudy, lows near 10 C and highs near 21 C.

SATURDAY ... Rain is still expected but guidance has shifted around with more of a gradual overspreading of the rain likely, but this could even give Leinster and Ulster a dry day or at least a dry start. Rain is most likely by evening and overnight, about 10-15 mm now appears likely. There could be isolated thunderstorms in this set-up and we should have more clarity on details by tomorrow morning. Lows near 12 C and highs of about 18 C where it rains, 20 C possible ahead of the rain.

SUNDAY ... Some further rain tapering to showers, then gradual clearing in freshening northerly breezes. Lows near 11 C and highs near 18 C.

OUTLOOK ... A dry start to next week with a vigorous frontal passage expected mid-week, most likely Tuesday night in Ireland and Wednesday in Britain, gusty winds and thunderstorms possible. Highs Monday and Tuesday in the low 20s. A slight drop in temperature will accompany the front but it should warm up fairly fast again towards the end of the week.

Highs in southern England on Tuesday reached 31 C (Heathrow) and similar values are likely to about Friday, slightly cooler on Saturday now with outbreaks of thunderstorms possible, and still in the high 20s on Sunday in some places. Over in France, the highest reading on Tuesday that I could find was 37 near Bordeaux, it was 33-34 in Paris region. Similar heat will continue all week there.

My local weather on Tuesday was mostly sunny and pleasantly cool at 21 C, warmer weather is returning for the rest of the week. In the Atlantic, Gaston will attain hurricane status and is expected to head north over the weekend and next week, well to the east of Bermuda then remnants are shown on charts for 4-6 September near Ireland; at that time distance, this is just a very tenuous forecast but something to keep in mind (no huge storm is shown just moderate winds and rain).

Friday, 26 August, 2016

Forecasts for Ireland


TODAY ... Partly cloudy with just a few isolated and rather brief showers, warm, highs 18-21 C.

TONIGHT ... Overcast south and west, some clear intervals elsewhere, leading to morning fog patches in valleys. Lows 8-11 C.

SATURDAY ... Mostly cloudy, some risk of showers in Munster and south Connacht mostly, more isolated with some places remaining dry elsewhere, and highs 18-20 C.

SUNDAY ... Variable cloud, scattered showers. Lows near 10 C and highs near 18 C.

MONDAY ... Sunny intervals and warm in the south, overcast in the north with some rain near Donegal Bay, highs 18-22 warmer inland south.

TUESDAY ... Partly cloudy to sunny, warm, highs near 21 C.

WEDNESDAY ... Cloudy, showers and risk of a thunderstorm, breezy to windy, and highs near 20 C.

OUTLOOK ... Latest model guidance on the track of Gaston remains similar to about Friday 2nd (when it is expected to be north of the Azores) but from that point on, the trend in recent model runs is for the remnant low to lose intensity rapidly while low pressure further north gains most of the available energy. So any rain around Friday 2nd to Monday 5th will now probably come from ordinary frontal systems rather than this tropical remnant which may not hold together long enough to reach Europe at all. At this time scale, further changes are likely so we can't write off Gaston as a future factor in this forecast.

In BRITAIN, southeast England will continue considerably warmer until Saturday with highs 27-30 C. The trend for other regions is more similar to the above forecast.

My local weather on Thursday was sunny and hot; highs reached 30 C and we will have one more hot day today before much cooler air arrives from the north for the weekend. It is also hot (and humid) in eastern regions of North America and will remain so for the next week or so.

Sunday, 28 August, 2016

Forecasts for Ireland


TODAY ... Cloudy with afternoon sunny intervals, any isolated showers will be quite brief with most places dry. Highs 18-20 C.

TONIGHT ... Clear intervals, fog patches developing later, lows 6-10 C.

MONDAY ... Sunny with cloudy intervals, except overcast in parts of the north with risk of light rain at times near Donegal Bay. Highs 18-22 C, warmest inland south.

TUESDAY ... Sunny intervals, warm. Highs 18-23 C. Some rain by evening in Atlantic coastal counties and gusty south to southwest winds developing overnight.

WEDNESDAY ... Morning showers, gusty southwest winds, then clearing, highs near 19 C.

THURSDAY and FRIDAY are expected to be partly cloudy and seasonably warm with highs near 20 C.

OUTLOOK ... Some rain is likely for weekend of 3rd-4th September but following that a warm spell is quite possible as winds turn around to the southeast for a few days. Gaston remains out of the picture for now, dying out northeast of the Azores by about next weekend.

My local weather turned quite a bit cooler on Saturday with cloudy intervals and gusty winds, highs near 23 C.