Met Éireann issues 42-hour high-temperature warning for 13 counties as Ireland heatwave intensifies

Met Éireann has issued a Status Yellow high-temperature warning for 13 counties as Ireland’s latest hot spell intensifies, with daytime temperatures expected to exceed 27C and overnight lows staying above 15C.

The warning came into force at 1 p.m. on Friday, July 10, 2026, and is due to remain in place until 7 a.m. on Sunday, July 12.

The counties covered are Carlow, Cork, Kildare, Kilkenny, Laois, Longford, Meath, Offaly, Westmeath, Wexford, Limerick, Tipperary and Waterford.

What Met Éireann is warning about

Met Éireann said the conditions could create water safety risks, uncomfortable sleeping conditions and heat stress.

The forecaster’s warning comes during a broader spell of very warm weather that has already prompted concern about high UV exposure, dehydration and the strain of warm nights on sleep.

Southeast expected to be hottest

Reports based on the Met Éireann outlook said the southeast is expected to see the highest temperatures, with Waterford potentially reaching around 30C on Saturday.

The same reporting said the national temperature advisory remains in place until midnight next Tuesday, adding to the sense that the hot spell is not a brief one-day event.

What happens next

Forecasters will be watching to see whether the warning is extended beyond Sunday morning, whether any county reaches 30C or triggers further local alerts, and whether thunderstorms become a factor later in the weekend.

For now, the main public-safety message is straightforward: the heat is expected to peak in the southeast, nights will stay unusually warm, and people using lakes, beaches and coastal waters should be cautious.