Ulster
Issued at: 18 July 2026 16:00
TODAY - Saturday 18th July
Dry this evening with a mix of cloud and sunny spells, in a light to moderate northerly breeze.
TONIGHT
Tonight will be dry with clear spells and isolated mist patches. Cooler than recent nights, with lowest temperatures of 9 to 13 degrees in light northerly or variable winds.
Pollen Forecast
High on Sunday and Monday.
Solar UV Index
High on Sunday. Moderate to high on Monday.
TOMORROW - Sunday 19th July
Tomorrow will be another dry day with long spells of hazy sunshine. Highest temperatures of 19 to 23 degrees generally, though it will be cooler in northern coastal counties, in a light to moderate northerly breeze.
National Outlook
Overview: High pressure remaining dominant. Temperatures will decrease compared to recently but it will be warm and dry with sunny spells for most. Slightly cooler and cloudier in the north and northwest with a few patches of drizzle there.
Sunday night: Most places will remain dry and clear. It will be cloudier in Ulster and north Connacht with a few patches of drizzle. Lowest temperatures of 10 to 14 degrees in a light northerly breeze.
Monday: Becoming cloudier overall on Monday morning, though with sunny spells over the southern half of the country. Most places will remain dry but patches of drizzle will affect parts of Connacht, Ulster and north Leinster. Warm in Leinster and Munster with highest temperatures of 20 to 25 degrees. Cooler in Ulster and Connacht with highest temperatures of 17 to 20 degrees in moderate northerly winds.
Monday night: Mostly dry with clear spells, though cloudier in Ulster and Connacht with the odd patch of drizzle lingering. A mild night with lowest temperatures of 12 to 15 degrees in a light to moderate northerly breeze.
Tuesday: Cloudier than recently on Tuesday, though sunny spells will develop away from the north and northwest. Remaining dry apart from isolated drizzle patches in the north and west. Once again, it will be warmest in Leinster and Munster with highest temperatures of 20 to 24 degrees. Cooler in Connacht and Ulster with highest temperatures of 16 to 20 degrees in moderate northerly winds.
Wednesday: A similar day on Wednesday with a good deal of cloud and the best of any sunny spells in southern counties. Highest temperatures will range from 17 degrees in the north to 24 degrees in the south in moderate northerly winds.
Further outlook: Little change in conditions on Thursday and Friday with cloud and drizzle in the north and west, and drier conditions with sunny spells elsewhere. There is potential for more changeable conditions next 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.