Thursday provisionally the warmest day of 2025 so far — Met Éireann

Beachgoers enjoying the sunshine in Burrow, Dublin. Picture: Sam Boal/Collins Photos

Thursday has provisionally been the warmest day of the year so far, according to Met Éireann.

The forecaster's weather station at Mount Dillon in Co Roscommon recorded a temperature of exactly 27C this afternoon, beating the previous 2025 high of 25.9C set in Athenry, Co Galway on Wednesday, April 30.

Provisional highest temperature of the year so far, recorded at #MountDillon, Co Roscommon 📍 this afternoon.

Beats the previous high of 25.9 °C at Athenry on April 30th. 🌡️#BeSummerReady #SunSmart pic.twitter.com/YWbofzeoj1

— Met Éireann (@MetEireann) June 19, 2025

As with all such temperature readings, the forecaster says the recorded value of 27C will be quality controlled and verified before being officially confirmed. 

Most areas have been basking in dry summer sunshine, with temperatures of 21C to 27C or so recorded all around the country.

And things look set to be warmer still on Friday, with highs of 28C or 29C expected, particularly in the northern half of the country.

Conditions will remain warm and humid into tonight, with the mercury unlikely to drop lower than around 13C to 16C in light to moderate southeasterly breezes. 

However, there is a risk of localised, heavy showers in some areas, and there is even a risk of some isolated thunderstorms along the west coast.

Weekend outlook 

As for Friday, Met Éireann is forecasting "very warm or hot" conditions, with further lengthy spells of summer sunshine. 

Daytime temperatures will range from 22C to 28C or even 29C, with the highest values likely to be felt in Connacht and Ulster.

Saturday too will be quite warm, with top temperatures ranging from about 19C to 25C, warmest across the eastern half of the country.

Sunday will be fresher and breezier than recent days with highest temperatures of 15C to 20C, with the best values likely to be felt in east of the country once again. 

Met Éireann says there will be some sunny spells on Sunday, but showery rain too, amid rather brisk westerly winds.