Réamhaisnéis Náisiúnta
Issued at: 17 August 2026 15:00
TODAY - Monday 17th August
Mostly cloudy this afternoon and evening apart from some sunny spells in the south and southeast. Outbreaks of rain and drizzle in the west and north will move southeastwards across the country through the late afternoon and evening, becoming patchier as they do so and with parts of the south and southeast remaining dry. Cooler in Connacht and Ulster with highest temperatures this afternoon of 17 to 21 degrees, and warmer in Munster and Leinster with highest temperatures of 21 to 25 degrees. All with light to moderate southwest to west breezes.
TONIGHT
Cloudy with mist and scattered outbreaks of rain or drizzle. These will become more isolated overnight and some clear intervals will develop in the east and south. Mild with lowest temperatures of 14 to 17 degrees in light to moderate westerly breezes.
TOMORROW - Tuesday 18th August
Tomorrow morning and early afternoon will be mainly cloudy with scattered light showers and occasional sunny intervals. During the late afternoon and evening a spell of rain will develop over the southern half of the country and showers will become heavier and more frequent further north. Highest temperatures of 16 to 21 degrees in light to moderate westerly breezes, fresh at times along Atlantic coasts.
National Outlook
Overview: Mixed conditions with showers or longer spells of rain at times. Occasionally breezy too with temperatures in the high teens to low twenties.
Tuesday night: Dry with clear spells for most. Scattered showers will mainly affect the west and north, becoming heavy at times in the northwest towards morning. Cooler than previous nights with lowest temperatures of 11 to 14 degrees in moderate southwesterly winds.
Wednesday: Showers will become widespread across the country, turning heavy and merging to longer spells of rain at times. Breezy with moderate to fresh westerly winds, strong at times near Atlantic coasts, with highest temperatures of 16 to 21 degrees.
Wednesday night: Showers will ease becoming mostly confined to the north and west with clear spells developing elsewhere. Lowest temperatures of 10 to 14 degrees with winds easing light to moderate and becoming northwesterly.
Thursday: Another day of showers becoming widespread and again turning heavy and prolonged in places. Highest temperatures of 15 to 20 degrees with moderate, occasionally fresh, northerly winds.
Friday: Sunny spells and showers, not as widespread as previous days with more in the way of drier weather likely. Highest temperatures of 14 to 19 degrees with moderate northerly breezes.
Further outlook: Current indications show a more settled picture for next weekend with sunny spells and just isolated showers. Temperatures will likely range from the mid to high teens.
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.