DUBLIN, Ireland: Spring 2025 was the warmest and sunniest spring in Ireland since records began, according to Met Éireann. It had the highest average temperature in 126 years and was the first spring to be more than 2 degrees Centigrade warmer than the 20th-century average.

Most weather stations recorded their highest total hours of sunshine for spring. The warmest day of the season was in Athenry, Co Galway, where the temperature reached 25.9 degrees C — the highest spring temperature there in 15 years.

It was also a relatively dry spring, ranking as the 16th driest since 1941 and the driest since 2020.

The unusually warm, sunny, and calm weather caused a marine heatwave off Ireland's west coast in April and May. Sea temperatures in some coastal areas were more than 2 degrees C above average and up to 4 degrees C higher in offshore areas.

Met Éireann said high-pressure systems blocked the usual weather patterns for most of the season, bringing lots of sunshine and warm easterly winds. These systems often settled just north of Ireland and the UK, helping sea temperatures around Ireland reach record highs.

Most stations had higher-than-normal air temperatures during all three spring months. Nearly all stations, except a few in the east, recorded their warmest spring ever.

March was mild, dry, and sunny, with weak upper-level winds and steady high pressure. April was warm and sunny, too, especially in the first half, with dry easterly winds. The second half of April turned wetter as Atlantic low pressure brought heavy rain to the Midlands, South, and East. However, it became dry and warm again by the end of the month, with record temperatures for April.

May also mainly had settled weather due to high pressure, bringing sunny days and easterly winds. This changed in the last week of spring, when low pressure from the Atlantic returned, bringing rain and showers.

Out of 25 weather stations, 23 had their warmest spring on record. Dunsany in Co Meath had its second warmest, and Dublin Airport had its joint third warmest.

Some stations — Oak Park in Co Carlow, Moore Park in Co Cork, Athenry in Co Galway, and Casement in Co Dublin — recorded their warmest spring for the third year in a row. Roches Point in Co Cork and Markree in Co Sligo had their warmest spring for the second year running.