Ulster
Issued at: 11 September 2026 12:00
TODAY - Friday 11th September
A mix of cloud and sunny spells today. Mostly dry with just a few isolated light showers. Highest temperatures of 15 to 18 degrees. Light, locally moderate, west to southwest winds will back southerly through the day, and freshen along parts of the west coast this evening.
TONIGHT
Dry at first tonight but becoming wet and breezy or windy as rain spreads from the west to all parts. The rain will be heavy at times, and possibly thundery, which may lead to localised flooding. Lowest temperatures of 11 to 13 degrees. South to southwest winds will increase fresh to strong and gusty, with gales developing along parts of the west and northwest coasts.
Pollen Forecast
Low.
Solar UV Index
Moderate today and low on Saturday.
TOMORROW - Saturday 12th September
Cloudy, wet and breezy at first on Saturday. The rain will clear southwards in the morning as drier conditions with scattered showers follow from the north. Some bright spells may develop too. Highest temperatures of 16 to 20 degrees and mildest in the east. Fresh and gusty southwest winds, strong at times near coasts, will gradually ease light to moderate westerly during the day.
National Outlook
Overview: Mixed conditions for the remainder of the weekend and into next week. Dry and bright periods will be interspersed with wet or showery ones. Breezy at times too. Turning cooler from Tuesday onwards.
Saturday night: Any lingering rain in the south should clear early in the night, leaving a mostly dry night with a mix of cloud and clear spells and just the odd light shower about. Some mist and fog patches will develop as winds ease light and variable overnight. Lowest temperatures of 9 to 13 degrees.
Sunday: Staying dry for many with just a few light showers about. While it will be quite cloudy, some sunny spells will break through at times. Highest temperatures of 16 to 21 degrees, coolest in Ulster, with a light to moderate south to southwest breeze.
Sunday night: Starting off mostly dry with a mix of cloud and clear spells and just a few showers about. Outbreaks of rain will arrive into Atlantic coastal areas towards morning. A mild night with lowest temperatures of 12 to 14 degrees, with a light to moderate south to southwest breeze.
Monday: Current indications are for a wet and breezy start to the day with widespread rain, turning heavy and persistent at times. The rain will clear eastwards through the afternoon, with sunny spells and scattered showers following. Highest temperatures of 17 to 21 degrees, with moderate to fresh southwesterly winds, veering westerly with the clearance of the rain.
Tuesday: Fresh and breezy with sunny spells and scattered showers. The showers will mainly affect the west and north of the country. Cooler than previous days with highest temperatures of 14 to 18 degrees, with a moderate to fresh northwesterly breeze.
Further outlook: Staying mixed for the remainder of the working week with showers or spells of rain forecast for each day, but also some drier and brighter spells. Turning breezy at times too, with maximum temperatures in the mid-teens generally.
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.