Long Range Weather Forecast For Ireland (19 July 2021)

Beara Peninsula, Cork

TRENDS for the week of 19 to 25 July 2021 --
-- Temperatures will average 3 to 5 deg above normal values.
-- Rainfall will be near zero to Friday when some areas will begin to see showers or thunderstorms, and eventually the average by end of the interval will be perhaps 25 to 50 per cent of normal.
-- Sunshine will average 25 to 50 per cent above normal.
-- Winds will continue very light and generally calm overnight.


TONIGHT will be clear and hazy with very warm temperatures persisting until well after midnight, possibly dropping briefly to the 14 to 18 C range around sunrise.

TUESDAY to THURSDAY will see little change from this very warm scenario, with similar temperatures and perhaps a little more extensive sea breeze cooling in eastern counties as a slight easterly flow develops. There may also be a more general encroachment of sea fog or low cloud in the south by Thursday due to this southeast flow. But otherwise most places are going to be very warm to hot with highs again 25 to 30 C, nights also staying very warm in the range of 14 to 18 C.

By FRIDAY some isolated showers and thunderstorms will reach Munster and south Leinster, but it will stay partly cloudy, dry and very warm further north, highs 24 to 28 C.

On SATURDAY this area of showers may move a little further north with isolated heavy thunderstorms possible, with the north still rather dry, and highs in most areas 24 to 27 C.

Slightly cooler air will arrive by early next week but the cooling trend looks weak and in several stages so that temperatures may only be falling off by a degree or two each day until possibly reaching more normal values in the low 20s by end of next week.

Peter for IWO.