National Forecast
Issued at: 21 October 2026 05:00
TODAY - Wednesday 21st October
Wednesday will begin rather wet and windy over much of the north and east, with overnight rain largely confined to east Ulster by late morning. Sunshine and scattered showers elsewhere will extend to all other areas through the day. Some heavy thundery falls will move in from the west during the evening hours. A blustery day, in a fresh to strong and gusty northwest wind, later easing. Cool with highest temperatures of 9 to 13 degrees.
TONIGHT
Scattered outbreaks of thundery rain with isolated thunderstorm will occur early tonight, clearing northeastwards overnight. Drier, clearer but colder weather will follow later. Lowest temperatures of 0 to 7 degrees, coldest away from west and southwest coasts; all in a light southwest or variable breeze.
TOMORROW - Thursday 22nd October
Starting mostly dry with sunny spells and well scattered showers across the west and north on Thursday. However, very heavy rain will develop in the southwest during the afternoon, extending northeastwards during the evening hours. Localised flooding is possible, especially in Munster and Leinster. Light to moderate east to northeast winds will strengthen later too. Very wet and windy across southern counties during the evening. Highest temperatures of 10 to 14 degrees.
National Outlook
Overview: Unsettled, with wet and windy conditions at times.
On Wednesday night, showers will continue in Munster and south Leinster for a time and also along the west coast. It will become mainly dry overnight. Lowest temperatures of 2 to 7 degrees with light southwesterly breezes.
Thursday will start off mainly dry. However, heavy rain will develop in the southwest during the morning and will spread northeastwards to all areas through the afternoon, evening and early night with localised flooding possible, especially in Munster and Leinster. Highs of 10 to 13 degrees with moderate to fresh east to northeast winds.
Thursday night will be wet with some heavy falls of rain, which will clear to the east overnight. Winds will veer strong and gusty northwesterly with lows of 5 to 8 degrees.
Friday will be blustery with sunshine and showers and moderate to fresh northwesterly winds. Highest temperatures of 9 to 11 degrees.
On Friday night, rain will move in from the west and will spread eastwards to all areas by morning along with strengthening southerly winds. Lowest temperatures of 3 to 8 degrees.
Saturday will start off wet with rain in all areas. Rain will clear eastwards with showers following. It will become very windy with strong, gusty westerly winds and highest temperatures of 1 to 15 degrees.
Sunday will be a cool breezy day with sunshine and showers and fresh, gusty westerly winds. Highest temperatures of 9 to 11 degrees.
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.