Heatwave Warning Issued as Temperatures Set to Climb to 30°C
Met Éireann has issued a weather advisory as heatwave conditions are expected across Ireland this week, with temperatures potentially reaching 30 degrees in some areas.
The advisory, effective from Wednesday through to Tuesday next week, warns that daytime temperatures will "widely exceed 25 degrees Celsius with values climbing to the high 20s or even low 30s in places from Friday."
Forecasters also warn of possible tropical nights this weekend, where temperatures remain uncomfortably high overnight, and the chance of thunderstorms developing later in the week.
Nationally, dry and settled conditions with plenty of sunshine are expected throughout the week and into next weekend.
A heatwave is technically defined as five consecutive days of 25 degrees or above, and Met Éireann expects some areas to meet this criteria in the coming days.
"At the moment we're not in it, but yes, we would expect to see it," said Met Éireann Forecaster Andrew Doran-Sherlock.
Tuesday will start cloudy in the north and west with patchy light rain and mist, but dry elsewhere with warm summer sunshine and top temperatures of 22-28 degrees. Wednesday will see sunshine become more widespread with temperatures again reaching 27-28 degrees.
Thursday could be the coolest day, bringing a lot of cloud at first but staying mainly dry with highs of 19-20 degrees.
However, Friday is shaping up to be the warmest day, with temperatures possibly touching 30 degrees in places.
There will be a slight northwest to southeast divide, with the south and southeast experiencing the warmest weather. Eastern coastal areas may be slightly cooler due to an easterly airflow.
High pressure to the south is feeding in a warm, humid, tropical maritime air mass, which will shift to a warmer continental air mass from Friday onwards.
Met Éireann meteorologist Mark Bowe warned that high overnight temperatures may make sleeping difficult. He advised keeping windows closed during the day to prevent warm air entering the home, making it easier to cool at night.
While the warm spell will not bring the same extreme heat currently being experienced in parts of Europe, it will still be significantly warmer than usual for this time of year. Potential yellow warnings for heat could be announced later this week.
Settled conditions are expected to continue into next weekend with long periods of warm, dry weather on Saturday and Sunday.
LTT Media — 6 July 2026