Met Éireann has confirmed that June 2025 was the fourth warmest on record for Ireland, despite a cool start to the month.

The national meteorological service said that all weather stations recorded mean temperatures above their long term average (1991-2020 LTA) during June.

The data shows that Mount Dillon, Co. Roscommon had the highest temperature of the year so far, when the mercury reached 29.6°C on Friday, June 20.

The average temperature for June 2025 was 15.1°, which was 1.88° above the 1961-1991 long-term average for the month and 1.42° above the long-term average for the most recent climatological reference period of 1991-2020.

The warmest June was in 2023 with an average temperature of 16.22°, while the coldest June was in 1972 with an average temperature of 12.68°.

The final third of June was remarkably hot for Europe, when an intense area of high pressure built over mainland Europe, causing heatwave conditions to develop.

"While this happened over mainland Europe, Ireland stayed on the cloudier northern edge of the heat dome, which brought some uncomfortably high nighttime temperatures, contributing to the high June temperatures overall," Met Éireann said.

Most stations saw rainfall above average (117% of the LTA for Ireland overall), making this June the 24th wettest since 1941 and the wettest June since 2022.

Met Éireann said that provisional gridded rainfall data suggests June 2025 averaged around 100mm, which is 117% of the month’s long-term average from 1991-2020.

The highest daily rainfall total was 42.6mm at Casement Aerodrome, Co. Dublin on June 14 (its highest daily fall for June since 2009 and 64% of its June LTA).

The number of rain days ranged from 19 days at both Dublin Airport and Casement Aerodrome, Co Dublin to 26 days at both Athenry, Co Galway and Claremorris, Co Mayo.

Generally stations in Leinster, Ulster, and Connacht saw above average rainfall, while several stations in Munster saw below average rainfall.

The highest number of daily sunshine hours recorded this month was 15 hours at Johnstown Castle, Co. Wexford on June 18.

The highest gust was 50 knots (93 km/h) reported at Belmullet, Co Mayo on June 2.