Monthly mean temperatures were all below average, with differences of up to nearly - 1.5°C in parts of the West and Northwest. Warmest conditions (compared to average) were in the Dublin area, with Phoenix Park reporting a mean temperature of 10.7°C, just 0.1°C below its May average. Almost all stations across the country reported that it was the coldest May since 1996 (17 years). ?Monthly mean maximum temperatures were well below average especially in the West and Northwest, with most parts reporting their lowest values in 17 to 34 years. Highest maximum temperatures were all recorded at the end of the month, with Mountdillon and Dublin (Phoenix Park) both reporting the month’s highest temperature of 20.4°C. Monthly minimum temperatures were near or above average in parts of the West, Southeast and East, with some stations in the West and South reporting their lowest figures in 12 to 17 years. The month’s lowest minimum was at Dublin Airport on the 17th, with -0.5°C.
Rainfall was above average in the West, North, Southwest and in parts of the Midlands with Long-Term Average (LTA) values as much as 176% at Malin Head with a monthly accumulation of 102.5 mm. Elsewhere, percentage values were as low as 60% at Carlow (Oak Park) which reported its driest May in five years, with Dublin (Phoenix Park) also reporting its driest May in five years with 69% of its LTA. The wettest days of the month were mainly between the 7th and the 9th, with the month’s wettest day at Belmullet on the 8th with 29.3 mm, its wettest May day since the station opened in 1957 (56 years). >> More