National Forecast

Issued at: 21 January 2026 21:00

TONIGHT

Tonight there will be fairly widespread showers or longer spells of rain at times.
Areas of mist and fog will form too. Lowest temperatures of 1 to 7 degrees, coldest in the southwest and west where clear spells are most likely. Moderate to fresh easterly winds in Ulster but mainly light and variable elsewhere.

TOMORROW - Thursday 22nd January

Thursday will be mostly cloudy and misty with showery outbreaks of rain in many areas. The best of any drier and brighter weather is expected in the south-west of the country. Highest temperatures of 5 to 9 degrees with light to moderate and variable winds, occasionally fresh in Ulster.

National Outlook

Thursday Night: Rain will clear northwards early on Thursday night, leaving scattered showers and clear spells, however areas of mist and fog will develop. Moderate to fresh easterly winds in Ulster at first, but otherwise winds will be light and variable. Lowest temperatures of -2 to +3 degrees, coldest in Munster.

Friday: Cloud and patchy rain or drizzle will develop in the south on Friday morning and will spread northwards through the day, with clear spells and showers following in the south during the evening. Becoming breezy with moderate to fresh easterly winds. Highest temperatures of 5 to 9 degrees.

Friday night: Cloudy with patchy light rain or drizzle in northern areas and showers near the south coast. Dry with clear spells across the centre of the country. Lowest temperatures of 4 to 8 degrees with a moderate to fresh easterly breeze.

The Weekend: There is some uncertainty in the forecast for the weekend but current indications are for patchy rain or showers at times but also some drier and brighter intervals. Breezy on Saturday with moderate to fresh easterly winds but becoming calmer on Sunday. Highest temperatures of 5 to 9 degrees.

Outlook for next week: Low pressure is forecast to remain in charge, bringing generally unsettled conditions. Potentially turning cooler early next week.