Heavy rain and thunderstorms on the way as experts say 'everyone is at risk'

The second week of the "summer" is now upon as and so far the weather across Ireland has been a mixed bag. Spells of sunshine, fluctuating temperatures and heavy rains have been coming and going and now experts have warned heavy thunderstorms are on the way.

Carlow Weatherman Alan O'Reilly has said "everywhere is at risk" for the incoming thunderstorms and they are something to "keep an eye on".

In a post on X, the weatherman said,

"There will be a lot of cloud coming back for Wednesday. There will be some sunny spells further north, it won't be too wet though until late Wednesday night and then we have the risk of thunderstorms. The risk of these thunderstorms is overnight Wednesday night into Thursday and through Thursday morning.

"Everywhere kind of is at risk really, but it will vary where sees the heaviest thunderstorms. The east on Thursday and then the North is more likely, a lot of uncertainty trying to forecast thunderstorms in Ireland is really tricky, so it's one to keep an eye on.

"It will be warmer on Wednesday away from the southwest cooler down there but up to 20 degrees away from the southwest on Wednesday and humid so it will feel a lot warmer. Those thunderstorms could continue Friday and Saturday, Sunday looks a better day but as I said forecasting thunderstorms can be tricky so keep up to date with the weather forecast."

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Tuesday evening update with risk of Thunderstorms stating tomorrow night. pic.twitter.com/63GVSHwxKs

— Carlow Weather (@CarlowWeather) June 10, 2025

Meanwhile Met Éireann have given their 5-day forecast and early indications next week which looks to bring more bright and sunny spells.

Today

Cloudy and humid but some sunny spells in the east and northeast. Dry for most of the day with just a few patches of drizzle. Later this evening showers will spread into the south and west, turning heavy and thundery in places after nightfall. Highest temperatures of 16 to 21 degrees in a light to moderate southerly breeze.

Early tonight, showers will spread from the south, with a spell of more persistent and heavy rain developing in Leinster and Ulster later. Scattered thunderstorms are possible with a chance of spot flooding. A mild and humid night with temperatures not falling below 12 to 15 degrees and mist and fog developing in a light southeast breeze.

Thursday

Tomorrow will start off wet across Leinster and Ulster with outbreaks of heavy, thundery rain and a chance of spot flooding. Elsewhere, heavy showers and scattered thunderstorms will feed up from the south through the day. Rain in the north and east will clear by late afternoon. Humid with highest temperatures of 16 to 21 degrees in moderate southeasterly winds.

Showers will become more isolated at first on Thursday night before further outbreaks of heavy rain spread across the country from the south with a chance of thunderstorms. Mild and humid with temperatures of 10 to 14 degrees. Mist and fog developing also in light to moderate southeast winds.

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Friday

Another humid day with outbreaks of heavy rain along with scattered thunderstorms. Highest temperatures of 16 to 20 degrees in light to moderate southerly or variable winds, fresher on eastern coasts.

Frequent showers will continue to spread from the south overnight, some heavy with a chance of thunderstorms. Turning misty or foggy in places in a light variable breeze. Lowest temperatures of 8 to 12 degrees.

Saturday

A showery day with some heavy showers and potential for further thunderstorms. Highest temperatures of 15 to 19 degrees in light to moderate northwesterly or variable winds.

Sunday

More in the way of dry weather on Sunday with some sunny spells and well scattered showers. Highest temperatures of 14 to 19 degrees in moderate westerly winds.

Early next week

There will be some spells of rain early next week but they will be lighter and patchier overall with a better chance of dry and sunny spells.