Ulster
Issued at: 24 December 2025 05:30
TODAY - Wednesday 24th December
Mostly cloudy to begin today, Wednesday, Christmas Eve, with a few patches of mist early on but it will brighten up as the day goes on with spells of sunshine developing. Highest temperatures of 6 to 9 degrees in light to moderate easterly breezes.
TONIGHT
Mostly clear skies for Santa and his reindeer tonight, Christmas Eve. Cold, with lowest temperatures of -2 to +2 degrees, with frost and icy patches forming on untreated surfaces, in a mostly light easterly or variable breeze.
TOMORROW - Thursday 25th December
Tomorrow, Thursday, Christmas Day, will be a dry and bright day with sunny spells. It may be a bit cloudier at times in the east and south of the region, however. Chilly, with daytime highs of around 4 to 7 degrees in light to moderate easterly breezes.
National Outlook
Overview: High pressure is signalled to persist through the outlook period bringing mainly dry and settled conditions.
Thursday Night (Christmas night): Cold and mostly clear on Thursday night, Christmas night, with just patchy cloud, mainly in the east. Lowest temperatures of -3 to +2 degrees generally, with frost and icy patches forming on untreated surfaces, and some patches of mist and fog too. Less cold near the east coast with lowest temperatures of 3 to 6 degrees. Light to moderate east to northeast or variable breezes, fresh at times along eastern and southern coasts.
Friday (St. Stephen's Day): Friday, St. Stephen's Day will be another dry and bright day with spells of winter sunshine. Some cloudy periods may occur in the east and south, though. Highest temperatures of 4 to 8 degrees in light to moderate northeasterly winds, freshening near eastern and southern coasts later.
Frieday night (St. Stephen's night): Dry and cold on Friday night, St. Stephen's night, under variable cloud and clear spells. Lowest temperatures of -1 to +4 degrees generally, but again, less cold near the east coast. Winds will be light to moderate northeasterly, fresher in eastern and southern coastal parts.
Saturday: Saturday will continue dry with a mix of cloud and spells of sunshine. Daytime highs will be around 6 to 9 degrees in light to moderate northeasterly breezes, fresh near eastern and southern coasts. Variable cloud and clear spells on Saturday night with lowest temperatures of 1 to 5 degrees in mainly light to moderate easterly breezes.
Sunday: A similar day expected on Sunday but winds will be lighter. Daytimes highs of 4 to 8 degrees. Frost will form on Sunday night where skies remain clear. Light variable breezes will allow mist and fog or freezing fog to form too. Lowest temperatures of -1 to +3 degrees.
Further outlook: High pressure looks set to continue to dominate into early next week, in the lead up to New Year. The centre of the area of high pressure will move close to or over Ireland, which means winds will be lighter, but that means under clearer skies, frost will be more widespread, with the added hazard of fog and freezing fog too, which could be slow to clear by day.
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.