National Forecast
Issued at: 12 May 2026 20:30
TONIGHT
Tonight will start off mainly dry with clear spells. Scattered showers in Ulster will extend southwards overnight, some possibly heavy in northern areas. Lowest temperatures of 4 to 8 degrees in moderate to fresh westerly winds, strong near Atlantic coasts.
TOMORROW - Wednesday 13th May
Wednesday will be a cool, breezy day with sunny spells and blustery showers, some of which will be heavy. Highest temperatures of 10 to 14 degrees with moderate to fresh and gusty northwesterly winds, strong near coasts.
National Outlook
Overview: Becoming more unsettled. Continuing cool for mid-May
Wednesday night: Scattered showers will ease early in the night, becoming mostly confined to the north and northwest with just isolated showers possible elsewhere. Cloud will build from the west through the night. Lowest temperatures of 4 to 9 degrees in mostly moderate northwest winds.
On Thursday, rain will develop in the west and northwest early in the morning and spread southeastwards to all areas by noon. Outbreaks of rain and drizzle will continue for the rest of the day, becoming light and patchy on Thursday night. A cool day with highest temperatures of 9 to 13 degrees and light to moderate west or northwest winds.
Friday will be a bit milder with bright or sunny spells and well scattered showers. Highest temperatures of 12 to 16 degrees in light to moderate northwesterly breezes.
Saturday will start off dry. Rain and drizzle will develop in the west and spread eastwards, clearing on Saturday night. Highest temperatures of 11 to 14 degrees with light to moderate south to southwest winds.
Sunday will be cool with sunny spells and scattered showers. Highest temperatures of 11 to 14 degrees with mostly light west to southwest 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.