National Forecast
Issued at: 11 September 2026 19:30
TONIGHT
Early tonight, heavy rain will develop in the northwest and will spread southeastwards overnight with isolated thunderstorms and localised flooding possible, especially over Ulster, Connacht and west Munster. The south and southeast will stay mainly dry. Lowest temperatures of 11 to 15 degrees with fresh to strong, gusty south to southwest winds.
TOMORROW - Saturday 12th September
On Saturday morning, rain will move southeastwards over Munster and Leinster. It will linger in the south and southwest through the day and will be heavy at times with localised flooding possible. Becoming drier elsewhere with some sunny intervals and a few showers. Fresh, gusty south to southwest winds will become southwesterly and ease in the afternoon. Highest temperatures of 16 to 21 degrees.
National Outlook
Overview: Mixed conditions for the coming week with rain or shower sat times.
Sunday night will start off mainly dry with clear spells and just a few showers. Rain will develop in the west and southwest overnight. A mild night with lowest temperatures of 12 to 14 degrees, with a light to moderate south to southwest breezes.
On Monday morning, rain will spread eastwards to all areas and will be heavy at times. It will clear through the afternoon and evening with scattered showers following from the west. Highest temperatures of 18 to 23, warmest in the east with moderate to fresh southwesterly winds, veering westerly as rain clears.
Tuesday will be fresh and breezy with sunny spells and showers, some heavy. Cooler than previous days with highest temperatures of 14 to 18 degrees, with moderate to fresh west to northwest winds.
Wednesday will start off with a fair amount of dry weather and some showers. By early evening, rain will develop in the west. It will spread eastwards to all areas early on Wednesday night and will clear overnight with scattered showers following. Highest temperatures of 14 to 18 degrees with south to southwest winds increasing fresh and gusty and becoming westerly overnight as rain clears.
Thursday will be a cool, fresh, breezy day with sunshine and showers. Highest temperatures of 14 to 17 degrees with moderate to fresh, gusty westerly winds.
Further outlook: some further showers on Friday and rain at times 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.