Issued at: 28 August 2026 14:21
Brighter spells will develop through the afternoon along with showers, some of which will turn heavy at times, with the chance of isolated thunderstorms. Later this evening, cloud will increase across the southwest. Feeling warm and humid with highest temperatures of 18 to 23 or 24 degrees, in a light to moderate west to northwest breeze.
It will become wet on Friday night as rain spreads from the southwest, reaching Ulster towards morning. The rain will be heavy at times and may cause localised flooding. Isolated thunderstorms are possible also. Winds will be mostly light and variable but will increase moderate to fresh northeasterly in the southwest later. Lowest temperatures of 11 to 15 degrees.
Saturday morning will start cloudy and wet with widespread rain, heavy at times. The rain will gradually clear eastwards from most areas through the morning and early afternoon, with isolated showers and some brighter spells following, but the cloud and rain will linger in parts of the east for much of the day. Highest temperatures of 15 to 20 degrees with light to moderate north to northwest winds.
Saturday night: Early Saturday night will be mostly dry, with clear spells and just isolated showers. Overnight, cloud will increase and more frequent showers will develop in the south and west, turning heavy at times. Lowest temperatures of 11 to 15 degrees with light to moderate south to southeast or variable winds.
Sunday: A cloudy and wet start to the day as rain spreads northeastwards across the country, turning heavy and possibly thundery at times. The rain will gradually clear northeast through the day and will be followed by sunny spells and scattered showers. Highest temperatures of 15 to 18 degrees with moderate to fresh winds, variable in direction.
Sunday night: Becoming breezy on Saturday night with a mix of clear spells and scattered showers, merging to longer spells of rain at times. Lowest temperatures of 11 to 14 degrees with moderate to fresh westerly winds.
Monday: Breezy with sunny spells and scattered showers at first, becoming cloudier later. Highest temperatures of 15 to 18 degrees with a moderate to fresh westerly breeze.
Monday night: Showers will continue on Monday night and after a mostly cloudy start, some clear spells will develop overnight as winds also ease. Lowest temperatures of 10 to 14 degrees.
Tuesday: Many areas will be dry and bright on Tuesday, although there will be well scattered showers too. Highest temperatures of 15 to 19 degrees with light to moderate west to northwest winds.

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.