Forecasters are predicting that temperatures ranging from 22 to 28 degrees are possible over the coming days, with a Spanish plume weather pattern moving over the country
08:22, 21 May 2026Updated 08:22, 21 May 2026
People enjoy the nice weather in St. Stephens Green in Dublin.
Ireland is set see the hottest few days of the year this week, as temperatures are due to rise to a very respectable 23 and 24 degrees.
On Tuesday, 29 June 2021, in Seapoint, Dublin, Ireland. (Photo by Artur Widak/NurPhoto via Getty Images)
Ireland may see some very warm days ahead, with temperatures predicted to reach up to 28 degrees.
Met Eireann is forecasting highs of 22 degrees by Sunday, with high pressure looking set to dominate into early next week, bringing a continuation of the mostly settled spell with warm or very warm air feeding up across the country. This is echoed by other forecasters, who predict that temperatures ranging from 22 to 28 degrees are possible.
Cathal Nolan of Irelands Weather Channel forecast that a “Spanish plume” may amplify the warm temperatures. A Spanish plume is a weather feature which brings an increased risk of thunderstorms and heat within an air mass which travels north from Iberia.
He said that “summer like conditions” are kicking off, but things will also feel humid and unsettled for a time.
“There are summer like conditions across the country as we head into the weekend, and especially so Sunday and Monday where temperatures are going to reach into the mid if not high 20s in some parts of the country,” he said in a new forecast.
“The reason behind that is due to a shift in the wind directions, our winds will go into a southerly or southeasterly direction at times with high pressure becoming a dominant feature and a Spanish plume bringing with it elevated high level temperatures from the Iberian Peninsula in North Africa and pushing them up across the UK and indeed into Ireland as well.”
He said highest temperatures of 25 to even 28 degrees may be experienced.
“Temperatures by the time we get the Sunday afternoon across the country could get up as high as 25, maybe even 26 degrees Celsius in some places and by the same time we hit Monday they could be up to 27, even 28 degrees Celsius based on some of the latest weather models that we’re seeing this morning.”
“So it is a very interesting forecast, between now and then however we will have more mixed conditions. Overcast at the moment. But sunny spells will develop more widely as we go through the afternoon before cloud builds in the southwest and outbreaks of rain.” He added that Thursday will be cloudy, dull and drizzly before Friday becomes more humid.
“And then by the time we get into Saturday, we start to see sunshine become more widespread, initially in the Midlands, East and South, but everywhere on Sunday with temperatures, as we mentioned, into the mid-20s at that point in time, and continuing to rise as we go to Monday, and into Tuesday of next week as well.”
Weather Alerts Ireland said that “temperatures are forecast to rise significantly from Sunday as very warm air pushes up from the south and high pressure builds around Ireland.”
Alan O’Reilly of Carlow weather forecast: “The colder air is pulling away and warmer air is slowly moving towards us with over 20c for weekend and early next week. We still have more rain to come tonight and Thursday with some showers on Friday but the weekend and early next week look mainly dry. If you are heading to Spain or Portugal some parts there will see up to 38c.”
Thursday
Mostly cloudy at first with patchy rain and mist, conditions will turn drier and brighter from the south by mid-afternoon with hazy sunshine developing, as rain becomes confined to northern counties. Highest temperatures will range from 14 to 19 degrees. Tonight will remain cloudy and humid with patches of mist and drizzle, though it will be largely dry inland with lowest temperatures of 11 to 13 degrees.
Friday
A mild and cloudy start with mist and drizzle will give way to gradual sunny spells, though sharp showers are expected to develop, focusing mainly across Ulster. Highest temperatures will reach 17 to 20 degrees generally, though southern coasts will be cooler due to sea-fog. Showers will die out early tonight, leaving a dry, cloudy night with mist and fog in the southeast and lowest temperatures of 9 to 12 degrees.
Saturday
The day will be dry with warm sunny spells developing across the country in moderate southwest breezes. Highest temperatures will generally range from 17 to 21 degrees, though some coastal areas will remain slightly cooler.
Sunday
The warm weather continues with good spells of sunshine, though cloudier skies will build in some parts through the day. Highest temperatures will reach 18 to 22 degrees in light southerly or variable breezes.
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