June 16, 2025; Swimmers at Sandycove Beach in Dublin.RollingNews.ie

Ireland had its hottest day of the year so far on Thursday, June 19, Met Éireann said on Thursday night.

Temperatures reached 27.0°C (80.6F) in Mount Dillon, Co Roscommon on Thursday, the Irish national meteorological service said.

This beats this year's previous high of 25.9°C, which was recorded at Athenry on April 30.

Several regions experienced "significant highs" on Thursday, Met Éireann added.

In her forecast on Thursday night, Met Éireann meteorologist Liz Walsh said it was a "lovely, warm and sunny evening out there today."

After noting the high temperature recorded in Co Roscommon, Walsh said: "It looks like temperatures are going to peak tomorrow [Friday] with a 20% chance of 30°C occurring in parts of the northwest.

"UV levels will continue to be high, so be sun smart and think water safety."

Read more

Friday, Walsh said, "is going to be very warm or even hot."

She said it will be "largely dry with long spells of summer sunshine developing."

However, Walsh said some showers may break out locally, and they could be heavy and even thundery.

Top temperatures on Friday are going to range from 21°C to 28°C or 29°C, with the highest values occurring over the northern half of the country.

Saturday will see temperatures fall, though it will remain "pleasantly warm" in the low 20s°C for many areas with a mix of sunny spells and showers, Walsh said.

Walsh said there would be some scattered showers over the weekend, and that it would feel "a good bit fresher and cooler by the time we get to Sunday."

Read more

Ireland's highest temperatures

According to Met Éireann, the highest air temperature recorded in Ireland in the 20th century was 32.5°C (90.5°F), which was recorded at Boora, Co Offaly on June 29, 1976.

Meanwhile, Ireland's highest shaded air temperature ever was 33.3°C (91.94°F), which was recorded at Kilkenny Castle on June 26, 1887.

In a Spring 2025 climate statement published on June 5, Met Éireann said Spring 2025 was the warmest on record for Ireland, with highest sunshine totals recorded at most stations for the period of March, April, and May.