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Ireland Braces for Heatwave: Humidity to Soar
22 Jun
Summary
- Temperatures in Ireland are expected to climb into the mid-20s this week.
- Humidity levels will make conditions feel much warmer than actual temperatures.
- Official heatwave status requires 25C for three consecutive days in Northern Ireland.

Warm and humid weather is forecast to continue across Ireland this week, with temperatures potentially reaching the mid-20s. By Tuesday, inland areas could see thermometers rise to approximately 24-26C. Thursday is predicted to be the warmest day, with temperatures climbing to the mid to high 20s during prolonged sunshine.
While these temperatures are below those expected in southern Britain, the high humidity is a notable characteristic for Ireland. Dew points are anticipated to reach around 20-21C on Thursday. This indicates a significant amount of moisture in the air, which can make conditions feel heavy and sticky, impeding the body's ability to cool itself.
An official heatwave declaration in Northern Ireland requires temperatures of at least 25C for three consecutive days. Current forecasts suggest some locations might reach this threshold, but cloud and weak weather fronts introduce uncertainty. In the Republic of Ireland, a heatwave is declared if temperatures hit at least 25C for five consecutive days.