Met Éireann has issued a nationwide status yellow high temperature warning for the entirety of the Republic of Ireland.

There is a risk of heat stress amid “exceptionally warm weather” over Ireland, forecasters have warned.

Met Éireann issued a nationwide status yellow high temperature warning for the entirety of the Republic of Ireland between midday on Tuesday and 9am on Friday.

It comes on top of an overall weather advisory which came into effect from midday on Monday.

Spring weather May 26th 2026
Sunbathers soak up the sunshine at Burrow Beach in Dublin as warm conditions continue under a Met Éireann yellow weather warning (Niall Carson/PA)

It said that daytime temperatures will exceed 25C with temperatures possibly reaching 30C on Thursday.

It added that it would be “very mild, humid and possibly uncomfortable at night” as temperatures will generally stay above 15C.

The weather agency warned that thunderstorms are possible also, particularly on Thursday.

Summer weather June 20th 2026
People jump into the water at the Forty Foot bathing pool on the southern tip of Dublin Bay at Sandycove, Dublin (Niall Carson/PA)

The UK Met Office said the highest temperatures in Northern Ireland would be around 23C on Monday and 25C on Tuesday.

It forecast that this would be followed by dry and very warm days with some sunny spells, and “perhaps very hot on Thursday” with potentially “some thundery showers” into Friday.

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