National Forecast
Issued at: 27 August 2026 21:30
TONIGHT
Rain in parts of Munster, Leinster and southeast Ulster early tonight, becoming confined to the east and southeast by morning. Clear spells and isolated showers in the northwest. The rain will be heavy at times, causing surface flooding, and there is a chance of isolated thunderstorms. Mist and fog will form overnight also. Lowest temperatures of 12 to 16 degrees with light to moderate northerly or variable winds.
TOMORROW - Friday 28th August
Rain will gradually clear from the east and southeast tomorrow morning. Other areas will be largely dry, although there'll be patches of drizzle and mist for a time. Through the afternoon, sunny spells will improve but scattered showers will develop too and some of these could be heavy. Cloud will increase across the southwest during the evening, with rain or drizzle develop in the far southwest. Warm and humid with highest temperatures of 18 to 23 degrees, in a light to moderate west to northwest breeze.
National Outlook
Overview: Unsettled with spells of rain and showers, turning heavy and thundery at times.
Friday night: Dry for most at first. Outbreaks of rain in the southwest will gradually extend over much of the country through the night, though northern areas may remain dry overall. Lowest temperatures of 12 to 16 degrees with mostly light variable breezes and some patches of mist and fog.
Saturday: A wet start for most with rain continuing. It will gradually clear eastwards through the morning and early afternoon with drier and brighter weather following. Highest temperatures of 16 to 21 degrees with light northerly breezes becoming westerly.
Saturday night: Mostly dry with clear spells. Outbreaks of rain and showers will move in from the west towards morning. Lowest temperatures of 10 to 14 degrees in light southerly or variable breezes with areas of mist and fog forming.
Sunday: Outbreaks of rain will become widespread, turning heavy at times with a chance of thunderstorms. Cooler than previous days with highest temperatures of 16 to 19 degrees in a light to moderate southerly breeze.
Monday: Breezy with showers feeding in from the west. Highest temperatures of 15 to 19 degrees in moderate, occasionally fresh, westerly winds.
Further outlook: Likely continuing unsettled on Tuesday and Wednesday with further rain and showers, and temperatures reaching the mid to high teens.
Temperature circle (°C): maximum and minimum temperature forecast for each day. Wind symbol (km/h): arrow points in the direction the wind is blowing. The weather and wind icons: for the time of maximum temperature and minimum temperature.