Ulster
Issued at: 31 August 2025 18:00
TODAY - Sunday 31st August
Widespread showers this afternoon and evening, some heavy and with a more organised spell of rain over the western half of the province with spot flooding and isolated thunderstorms possible, in fresh, gusty southerly winds.
TONIGHT
Further showers will continue to feed in from the west overnight, merging into longer spells of rain at times in the northwest, turning heavy in places. Good dry spells will develop though in eastern parts. Lowest temperatures of 11 to 13 degrees with mostly moderate, occasionally fresh, southwest to west winds, strong along western coasts.
Pollen Forecast
Low on Monday and Tuesday.
Solar UV Index
Low to moderate on Monday and Tuesday.
TOMORROW - Monday 1st September
Tomorrow, Monday, will bring some sunny spells and fairly widespread showers, some of those heavy, with a longer spell of rain for a time. The showers will become more isolated in the evening. Highest temperatures of 14 to 18 degrees with moderate to fresh westerly winds, decreasing light to moderate southwesterly through the evening.
National Outlook
Monday night: A mix of clear spells and well scattered showers, some heavy in the northwest. Winds will become light southerly or variable so patches of mist and fog will form. Lowest temperatures of 7 to 12 degrees.
Tuesday: Sunny spells and scattered showers, mainly in the north and west at first but becoming more widespread during the afternoon. Highest temperatures of 15 to 20 degrees with light southwesterly winds.
Tuesday night: Tuesday night will start off mostly dry with clear spells and just isolated showers. However, rain will move into the southwest and will extend northwards across much of the country overnight, turning heavy at times in the south. Winds will be mainly light and variable but may strengthen for a time in the southeast. Lowest temperatures of 9 to 13 degrees.
Wednesday: A cloudy and wet start to Wednesday, with the heaviest rain in the southeast. The rain will gradually clear eastwards through the day and will be followed by sunny spells and scattered showers. Highest temperatures of 14 to 17 degrees with moderate westerly winds.
Wednesday night: Mostly dry with clear spells, although some cloud and rain is possible in the south and there'll be some showers in the west and northwest. Patches of mist and fog will form in light and variable winds. Lowest temperatures of 7 to 11 degrees.
Thursday: Thursday morning will be mostly dry and sunny although there'll be a few showers towards Atlantic coasts. Showers will develop in other areas during the afternoon but there'll still be plenty of dry and bright weather. Highest temperatures of 15 to 18 degrees with a light to moderate westerly breeze.
Thursday night: A few showers in the west and northwest but otherwise dry with long clear spells. Lowest temperatures of 9 to 13 degrees in a light to moderate southerly breeze.
Friday: Cloud is forecast to increase on Friday, bringing isolated light showers. Highest temperatures of 15 to 18 degrees with a moderate southwesterly wind.
The Weekend: Current indications are for breezy conditions at the weekend with sunny spells and some showers on Saturday, before turning more unsettled on Sunday.
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.