Ireland's balmy weather persists, according to Met Éireann, with continued 25-degree temperatures forecasted
Ireland's national meteorological service, Met Éireann, has predicted a spell of warm weather in the coming days, with highs of 27 degrees expected on Wednesday. However, the temperatures are not expected to fall below 13 degrees overnight, and these significant overnight temperatures are driving up the mean temperatures, making it a warm period.
According to Met Éireann, a heatwave is defined as five or more consecutive days with temperatures above 25 degrees. This means that while the high temperatures are expected to last until Sunday, they may fall just short of the heatwave threshold.
Wednesday will be warm and humid with good sunny spells, but showers are expected to move in from the southwest through the afternoon and evening, some of which could be heavy with a chance of thunder and lightning. Thursday will be cloudy at first, but with long spells of sunshine breaking through in the afternoon and evening as showers ease. Highest temperatures will reach 21 to 25 degrees in light to moderate southwest breezes.
Friday will see further sunny spells with light showers easing through the day to leave longer periods of sunshine later on. Highest temperatures are expected to be in the range of 19 to 26 degrees with light easterly or variable breezes.
A status yellow weather warning for thunderstorms has been issued for counties Clare, Kerry, and Limerick on Wednesday from 3pm to 9pm. The warning covers localised flooding, lightning, and difficult traveling conditions.
Met Éireann forecaster Aoife Kealy states that the 25 degree recording must occur five days in a row at the same weather station for it to be considered a heatwave. The days ahead could see consistently high temperatures, but these highs could be recorded at different weather stations, keeping it just below the heatwave threshold.
In recent years, Ireland has experienced warm spells around 25–28°C, close to but often just below the threshold needed for an official heatwave declaration. The warm spells involved some variability with showers and thundery falls, especially in western and southern areas.
It's worth noting that the heatwave threshold in Ireland is stricter than the 3-day rule used by the British Met Office. For a high temperature warning to be issued in Ireland, temperatures must surpass 27°C over a widespread area.
For more information on weather updates and warnings, visit Met Éireann's website.
[1] Met Éireann. (n.d.). Heatwave advice. Retrieved June 14, 2023, from https://www.met.ie/weather/advice-and-warnings/heat-health-watch/heatwave-advice/
[2] Met Éireann. (n.d.). What is a heatwave?. Retrieved June 14, 2023, from https://www.met.ie/weather/advice-and-warnings/heat-health-watch/what-is-a-heatwave/
[3] Met Office. (n.d.). Heatwave. Retrieved June 14, 2023, from https://www.metoffice.gov.uk/weather/learn-about/uk/heatwave/
[4] Met Éireann. (2021, June 21). Temperatures to reach low to mid 20s this week. Retrieved June 14, 2023, from https://www.met.ie/weather/irish-weather-forecast/2021/06/21/temperatures-to-reach-low-to-mid-20s-this-week/
[5] Met Éireann. (2022, June 13). Temperatures to reach mid-20s this week. Retrieved June 14, 2023, from https://www.met.ie/weather/irish-weather-forecast/2022/06/13/temperatures-to-reach-mid-20s-this-week/
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