Ulster
Issued at: 15 September 2026 12:00
TODAY - Tuesday 15th September
A bit fresher today with a mix of sunny spells and scattered passing showers. Highs of 14 to 17 degrees with moderate to fresh northwesterly winds.
TONIGHT
Showers will become more isolated tonight with longer dry and clear spells developing. Lows of 9 to 11 degrees with moderate westerly winds.
Pollen Forecast
Low
Solar UV Index
Low to moderate
TOMORROW - Wednesday 16th September
It will be mostly dry tomorrow with a mix of cloud, sunny spells and isolated showers. In the afternoon, cloud will increase from the west with some patchy drizzle developing near Atlantic counties. More widespread rain will follow towards the evening. Highs of 14 to 17 degrees with moderate west to southwest breezes, freshening later.
National Outlook
Overview: Breezy most days with scattered showers. Wetter in places on Friday.
Wednesday night: Wet and rather breezy weather across Atlantic counties will push eastwards early on. Clear spells and well-scattered showers will follow for the rest of the night. Lowest temperatures of 9 to 12 degrees, in moderate to fresh southwesterly winds.
Thursday: A fresh and breezy day with sunny spells and scattered showers. Showers will be most frequent across the west and northwest with parts of the southeast staying dry. Highest temperatures of 14 to 17 degrees, in a rather brisk westerly breeze.
Friday: Rather wet and breezy during the morning with cloudy outbreaks of rain occurring widely. The rain will ease into the afternoon, but it will remain fairly cloudy with patchy rain or drizzle for the rest of the day. Highest temperatures of 15 to 19 degrees, in a moderate, occasionally fresh, southwesterly wind.
This weekend: Breezy on Saturday with sunny spells and passing showers, mainly across the northern half of the country. Sunday will be drier, though thickening cloud will feed in patchy outbreaks of drizzle during the evening.
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.