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06 Sept 2025

Met Éireann pinpoints date when Ireland's mini heatwave will end with a bang

Ten Tips on how to stay cool during the Irish heatwave

Tips on how to stay cool during the Irish heatwave

Ireland is currently basking in a 25C mini heatwave but Met Éireann forecasters have indicated when the unseasonably warm spell could end.

This week looks safe to stay warm, sunny and largely dry with just the odd shower at times. Top temperatures for the rest of the week will be between 22C and 26C.

Met Éireann says the nights will remain "muggy" with temperatures overnight staying in the high teens in most places.

A Met Éireann forecaster says it will be "very warm, both by day and night, with thundery showers breaking out at times."

A lot of these showers look likely to fall on Friday or overnight on Thursday.

Looking ahead to next week, Met Éireann is so far predicting similar conditions to dominate.

"There is a weak signal for high pressure to dominate to the north of Ireland keeping an easterly flow, slightly above average temperatures and marginally drier than average," they explained.

"The chance of fog and some cooler nights exist, however overall again the potential for hazardous conditions remains low."

Monday, September 18, could be the date our weather takes a turn with more rain and cooler conditions.

"Overall the pattern looks have a weak northeasterly flow as high pressure slips to the northwest. Temperatures look to hold a degree above average while rainfall amounts will tend towards average in most parts. Overall the potential for hazardous conditions remains low," their extended forecast says.

The last week in September could see warm weather return with forecasters foreseeing high pressure from the east, "switching the flow to the southeast and maintaining a signal for above average temperatures, while rainfall amounts will be near average or slightly below average."

However, in that week, Met Éireann warns that "owing to the flow there is a slightly escalated potential for some thunderstorm activity" but the risk remains low.

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