National Forecast
Issued at: 31 December 2025 11:50
TODAY - Wednesday 31st December
This afternoon will be mainly cloudy and dry but there's a chance of drizzle near the south coast and light showers near the northwest coast. Outbreaks of rain will develop in north Ulster this evening. A chilly day with highest temperatures of 2 to 7 degrees, coldest in Ulster, with light to moderate westerly or variable winds.
TONIGHT
Tonight will be cold with widespread frost and some icy stretches, as temperatures fall to between -2 and +2 degrees. Cloud and outbreaks of rain will move southwards over the northern half of the country. Other areas will be partly cloudy with some showers. Westerly winds will be mainly light to moderate but fresh at times in the north and east.
TOMORROW - Thursday 1st January
A cold start to New Year's Day with widespread frost and some icy stretches. Cloud and patchy rain will clear southwards during the morning and there'll be plenty of dry and bright weather for the afternoon, with just isolated showers. Highest temperatures of 4 to 8 degrees in light to moderate northwesterly winds, fresher near northern and northwestern coasts.
National Outlook
Overview: High pressure is continuing to dominate bringing plenty of dry weather overall, though there will be some light rain or showers at times. Turning colder for the weekend with sharp to severe frosts developing and some wintry showers mainly affecting the north and northwest.
Thursday night: Initially dry with clear spells at first. Outbreaks of rain and drizzle will move into the north early on and gradually sink southwards becoming patchier and easing towards morning. Further clear spells and scattered wintry showers will follow from the north. Lowest temperatures of -1 to +3 degrees in light to moderate northwesterly winds.
Friday: A day of good sunny spells, with some showers of sleet and snow possible, mainly in the north. Highest temperatures of 3 to 7 degrees in light to moderate northwesterly winds, fresher near coasts.
Friday night: Continuing mostly dry and clear with some wintry showers, mainly affecting the north and northwest. Lowest temperatures of -2 to +2 degrees in light to moderate northwesterly winds.
Saturday and Sunday: Very cold and mostly dry with wintry showers, mainly in parts of the north and northwest. Highest daytime temperatures of just 2 to 5 degrees in light to moderate northwesterly winds. Lowest night-time temperatures of -3 to +1 degrees with sharp frosts and ice developing.
Further outlook: Continuing cold into early next week, with plenty of dry weather, though there will be wintry showers or outbreaks of rain at times.
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.