Sunday, 25 April, 2021
Forecasts for Ireland
TRENDS for the week of 25 April to 1 May 2021 --
-- Temperatures will average 2 to 3 deg below normal, although today will be a bit warmer than average.
-- Rainfall will average 10 to 20 per cent of normal values.
-- Sunshine will average 25 per cent above normal values. Winds will remain light until Tuesday then become more moderate in strength and mainly from a northeasterly direction (later backing northwest).
TODAY will be sunny, hazy and warm with the sea breezes perhaps a bit less of a factor at least on the east coast, highs will reach 17-20 C in many areas even fairly close to the coasts today. (could be held down to 15 C at the shore)
TONIGHT will continue clear with a bit of cloud at times in the north, lows -1 to +3 C.
MONDAY will see a gradual increase in cloud from north to south, followed by a few showers in Ulster by late in the day, but staying dry elsewhere. Highs 14-18 C.
TUESDAY will turn cooler with occasional showers, one or two a bit heavier and possibly thundery. Lows near 5 C and highs 12-15 C in north to northeast winds 30-50 km/hr.
WEDNESDAY will be partly cloudy to overcast with isolated showers, cool, with moderate north to northeast winds at times, lows near 4 C and highs near 13 C.
THURSDAY and FRIDAY will continue similar with partly cloudy to overcast skies, risk of isolated showers, and highs near 13 C after morning lows around 4 C. Any location that clears during these nights could see frost but it may be too cloudy for widespread frost to form.
This cold air mass will try to hold on next weekend but somewhat milder air from the southeast will replace it for a time, before a front passes around Sunday 2nd May, with rain at times, then another cool spell will follow with another gradual moderation of temperatures in the first week of May. That may be the last of these cool spells as there are signs of a larger scale pattern change coming along after that one.
My local weather on Saturday was overcast and foggy with light rain or drizzle and calm conditions but only around 8 degrees C. This is the first rain we've seen here since the spring-like weather arrived a week ago.