National Forecast
Issued at: 20 March 2026 00:00
TODAY - Friday 20th March
Mist and fog patches will clear quickly this morning to leave a dry day with plenty of sunshine, turning a little hazy at times in places. There's just the chance that a little coastal mist and fog may encroach onto coastal parts of the east and south from time to time. After a generally chilly start, temperatures will rise to a pleasant 12 to 18 degrees, warmest inland, in light southerly or variable breezes.
TONIGHT
Dry tonight with long clear spells, though becoming a little cloudier in the northwest. Lowest temperatures of 0 to 6 degrees, in near calm conditions, with areas of mist and fog forming and with a touch of frost locally.
TOMORROW - Saturday 21st March
The mist and fog will generally clear quickly tomorrow morning, though there's the chance that some coastal fog may drift onto some coastal parts from time to time. It'll be another dry day for most, with spells of sunshine, hazy at times. It'll be a little cloudier in coastal parts of the northwest, but dry apart from the chance of a few spots of drizzle. Highest temperatures of 11 to 17 degrees in mostly light southwest or variable breezes.
National Outlook
Overview: High pressure remains dominant at first. Turning increasingly unsettled through Sunday and into early next week.
Friday night: Mostly dry with long clear spells, though becoming a touch cloudier in the northwest. Lowest temperatures of 0 to 4 degrees in near calm conditions with areas of mist and fog forming.
Saturday: Fog will clear most areas through the morning though may linger near some coasts. A dry day with hazy sunshine for most, though it will be duller in parts of the northwest with a few spots of light rain or drizzle possible here. Highest temperatures of 11 to 14 degrees in light southerly or variable breezes.
Saturday night: Another mostly dry night with clear spells, again with mist and fog forming. However, cloud will build in the northwest with patchy rain and drizzle developing here towards morning. Lowest temperatures of 1 to 6 degrees with mostly light southwesterly winds.
Sunday: Starting off dry for most with bright spells in the southeast. Becoming cloudier through the morning with patchy rain or drizzle in places. The rain will be more persistent in Connacht and Ulster for a time. Highest temperatures of 10 to 13 degrees with light to moderate westerly winds, veering northwesterly through the day.
Monday: Current indications show a damp and breezy day with outbreaks of rain and moderate to fresh southwesterly winds. Cooler than previous days with highest temperatures of 8 to 11 degrees.
Further outlook: Likely continuing unsettled with further spells of wet and breezy weather.
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.