National Forecast
Issued at: 29 December 2025 08:33
TODAY - Monday 29th December
Mostly cloudy and dry today with just a few isolated patches of light rain and drizzle. Brighter spells will break through over parts of Ulster and north Connacht later on. Highest temperatures of 3 to 7 degrees in mostly light northeast breezes.
TONIGHT
Staying generally dry and cloudy, with clearer spells further north. Isolated patches of rain and drizzle will mainly affect parts of the east and south. Cold under clear spells with frost developing in lowest temperatures in the north and northwest of -2 to +2 degrees. Less cold elsewhere with lowest temperatures of 2 to 6 degrees, all in light to moderate northeast winds.
TOMORROW - Tuesday 30th December
Another cloudy start tomorrow morning. Turning brighter though as the day goes on with bright or sunny spells developing. Most areas will be dry with just the odd spot of drizzle in the south and east. Highest temperatures of 3 to 7 degrees in mostly light northeast breezes.
National Outlook
Overview: Staying largely settled with high pressure close by, bringing mostly dry but cloudier conditions overall with the odd patch of drizzle at times too but staying cold.
Tuesday night: Cold and dry with clear spells developing overnight in light easterly or variable breezes. Fog or freezing fog will develop in places too with lowest temperatures of -3 to+1 degrees.
Wednesday (New Year's Eve): Starting out frosty for the last day of 2025. Fog and or freezing fog will be slow to clear but sunny spells will develop through the day and staying dry too. Chilly, with temperatures of just 2 to 6 degrees in a light variable breeze.
Wednesday night: Outbreaks of rain and drizzle will move in over Atlantic coasts overnight with drier spells elsewhere. Lowest temperatures of -2 to +3 degrees in mostly light to moderate westerly winds, strong at times on Northern coasts.
Thursday (New Year's Day): A rather cloudy start to 2026 with patchy outbreaks of rain and drizzle spreading from the north. Slightly milder than late with highest temperatures of 5 to 8 degrees in moderate westerly winds.
Further outlook:
Friday and next weekend: Turning colder again as we move through the first week of January but with high pressure nearby, many places will stay dry. However, showers may spread from the north at times with the potential for some wintry precipitation. Current signals indicate temperatures dropping further, and conditions becoming very cold.
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.