IRELAND IS SET for a notably warmer and more settled spell over the coming days, with Met Éireann forecasting a steady climb in temperatures after a cool start to the weekend, and the potential for “very warm or even hot” conditions by the end of next week.
Today will be dry with long spells of sunshine, though temperatures will remain relatively modest for the time of year, ranging from 16 to 22 degrees, warmest in the east.
Tonight will stay clear and calm, with temperatures dropping to between 6 and 11 degrees, making for a cool but dry night.
Sunday continues the settled theme, with widespread sunshine and slightly higher temperatures, reaching 18 to 24 degrees. The warmest conditions are expected in the west, with light easterly breezes and skies turning slightly hazy later in the day.
The real shift begins early next week. Monday is expected to be mostly dry, warm and sunny, with temperatures climbing to as high as 26 degrees. The east and southeast are likely to be among the warmest regions, while some thundery showers may develop in the southeast later in the day.
Tuesday brings a slight split in conditions, with western and northwestern areas likely to be a bit cloudier and cooler, with scattered light showers possible. Elsewhere, it stays largely dry and warm, with highs ranging from 18 to 25 degrees.
By midweek, temperatures are expected to peak more widely, with Wednesday bringing generally dry and warm to very warm conditions and highs in the low to mid-20s. Some coastal areas may be slightly cooler where onshore breezes develop.
Thursday and Friday are shaping up to be the warmest days of the spell, with forecasters suggesting a continental air mass could push temperatures into the high 20s in places, along with noticeably warm and potentially “sultry” nights.
The warm-up is being driven by a large area of high pressure over Europe, often referred to as a heat dome.
While Ireland will avoid the extreme temperatures seen in parts of Southern Europe, the same pattern is contributing to the steady rise in heat here.
Heat domes can intensify and prolong hot weather by trapping warm air under a persistent high-pressure system, increasing the risk of heat-related health impacts and wildfires across affected regions.
Across Europe, authorities have issued heat alerts as temperatures climb well above seasonal averages, with the UK Met Office issuing an amber weather warning for extreme heat across parts of the UK for Monday.
Extreme heat events are becoming more frequent and more intense due to climate change, as a warming atmosphere increases the likelihood of prolonged hot spells and shifts in established weather patterns.
The UV forecast for tomorrow, 20th of June☀️#UV index will be:
— Met Éireann (@MetEireann) June 19, 2026
🟡🟠Low to moderate under any clear skies
🟡Mostly low under cloudy skies
Stay #Sunsmart - protect your skin & eyes, even on cloudy days 😎
Learn more ℹ️
➡️https://t.co/f7ZgRWWlY5
➡️ https://t.co/rlTGsxFjMn pic.twitter.com/RivqXuTr34
For Ireland, the outlook remains more moderate, but Met Éireann are advising the public to be “sun smart” during the warmer conditions expected through the week, particularly around coastal and outdoor areas.
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