Ulster
Issued at: 13 December 2025 05:30
TODAY - Saturday 13th December
Wet and blustery to begin today, Sunday, with outbreaks of rain and drizzle, turning heavy at times. With high river levels and saturated soils, river and surface water flooding are likely, particularly in the west of the region. Winds will ease this afternoon. Highest temperatures of 11 to 13 degrees with fresh to strong and gusty southerly winds, easing light to moderate southwest to west this afternoon.
TONIGHT
Outbreaks of rain will gradually clear eastwards early tonight, with clear spells and just a few showers following from the west. Lowest temperatures of 4 to 6 degrees. Winds will ease mostly light southerly or variable with mist and fog patches forming.
Solar UV Index
Low
TOMORROW - Sunday 14th December
Most parts of the region will be dry tomorrow, Monday, with just the chance of the odd shower. The best of the sunshine will be further to the west, once early mist and fog patches clear. It will be somewhat cloudier in the east.
National Outlook
Overview: Some respite to start the week, but turning more unsettled again on Tuesday night.
Monday night: Mostly dry with long clear breaks developing countrywide. A few showers will affect Atlantic coastal counties overnight, however. A chilly night with lowest temperatures of 0 to 4 degrees with a touch of frost possible. Light southerly or variable breezes will allow a few mist and fog patches to form also.
Tuesday: Tuesday will be a mainly dry and sunny day after a cool, crisp start. Isolated showers will be confined to western and northwestern coasts. Highest temperatures will range 6 to 10 degrees in light to moderate southwest breezes, fresher near the northwest coast. Mainly dry and clear at first on Tuesday night with just isolated showers in the northwest. Cloud will thicken from the west with outbreaks of rain and drizzle spreading eastwards over the country overnight. Turning cold in the east soon after dark with lowest temperatures of 1 to 4 degrees occurring early on. Becoming milder as the night goes on though, as winds back southerly and increase fresh to strong and gusty, with gales developing along some western, northern and eastern coasts by morning.
Wednesday: Wet and blustery to begin on Wednesday with widespread outbreaks of rain and drizzle in fresh to strong southerly winds. A clearance will develop in the west by the afternoon, with drier, clearer and calmer conditions gradually spreading eastwards through the rest of the day. Afternoon highs of 9 to 13 degrees with winds veering light to moderate southwest with the clearance of the cloud and rain.
Thursday: Uncertainty in the details for Thursday at present, but current indications suggest another spell of rain may move up from the south and affect eastern and southern parts of the country to start the day. The rain looks set to clear eastwards, allowing scattered showers to spread from the Atlantic, some them heavy with hail and isolated thunderstorms possible. Highest temperatures of 7 to 11 degrees in moderate southwesterly winds.
Friday and Next Weekend: Confidence in the forecast is a little lower than usual for the lead time. A zonal Atlantic regime looks set to persist at first, but there are tentative signs that more settled conditions may develop by the end of the weekend.
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.