Ulster
Issued at: 12 March 2026 05:30
TODAY - Thursday 12th March
Wet and windy to begin today, Thursday, with rain, heavy at times with spot flooding possible, accompanied by fresh to strong and gusty southwest to west winds with gales at the coast. The rain will gradually clear southeastwards by early afternoon and it will turn colder and a little less windy with showers following, some turning wintry in the northern parts by evening. Afternoon highs of 4 to 8 degrees.
TONIGHT
Cold with clear spells and scattered blustery showers tonight, some heavy with isolated thunderstorms possible. Some of the showers will be a wintry mix of rain, hail, and sleet. Temporary lying snow is possible. Lowest temperatures of 0 to 3 degrees in fresh to strong and gusty southwesterly winds with gales near the coast.
TOMORROW - Friday 13th March
Cold and breezy with bright or sunny spells and scattered showers, tomorrow Friday, merging to longer spells of rain of at times. Some of the showers could be wintry at first but they'll transition mostly to rain or hail through the morning. Isolated thunderstorms are also possible. Highest temperatures of 5 to 8 degrees but feeling chillier in mostly moderate to fresh and gusty westerly winds becoming west to northwest and easing later.
National Outlook
Friday Night: Showers will gradually become less frequent early on Friday night, becoming largely confined to Atlantic coastal counties with clear spells developing for a time. Cloud will increase from the Atlantic overnight with patchy rain and drizzle developing in western areas. Westerly winds will ease light to moderate and back southwesterly overnight. Lowest temperatures of -1 to +3 degrees.
Saturday: Saturday will start dry in the east with some sunshine, but cloud will continue to thicken from the west through the morning as patchy rain and drizzle spreads across the country during the afternoon. Highest temperatures of 7 to 10 degrees in light to moderate westerly winds. Winds will back south to southwest on Saturday night heralding the advance of further outbreaks of rain and drizzle extending from the Atlantic. The rain and drizzle will become patchier towards morning with some clear breaks developing. Lowest temperatures of 3 to 7 degrees.
Sunday: Sunday will be a cool and breezy day with sunny spells and scattered blustery showers, some turning wintry later in the day with a chance of hail or sleet, mainly in the north. Afternoon highs of 5 to 10 degrees in fresh to strong westerly winds. Showers will gradually ease, becoming largely confined to Ulster with skies clearing elsewhere. Lowest temperatures of 3 to 7 degrees with moderate to fresh and gusty westerly winds backing southwest by morning.
Monday: Many places will be dry at first on Monday, but cloud will soon thicken with outbreaks of rain and drizzle spreading from the Atlantic. It'll become breezy too with fresh to strong south to southwest winds developing in the afternoon. Highest temperatures of 10 to 12 degrees.
Tuesday, St Patrick's Day: Still a degree of uncertainty at present but current indications suggest a mostly cloudy and damp start to the day with outbreaks of rain and drizzle slowly clearing southeastwards and brightening up from the west as the day goes on. Highest temperatures of 8 to 11 degrees with light to moderate west to southwest winds.
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.