Connacht
Issued at: 20 May 2026 13:00
TODAY - Wednesday 20th May
Variable cloud amounts, hazy sunny spells and a few light showers for this afternoon. Cloud will thicken from the south-west this evening, with outbreaks of rain and drizzle developing in south Connacht by nightfall. Highest temperatures of 14 to 16 degrees in light to moderate southwesterly winds becoming southerly this evening.
TONIGHT
Mostly cloudy with outbreaks of rain and drizzle continuing to extend northeastwards over the region early tonight. The rain and drizzle will turn patchier overnight. There'll be some mist, hill and coastal fog around too. Mild with lowest temperatures of 11 to 13 degrees, in light to moderate, occasionally fresh, southerly winds.
Pollen Forecast
Low on Wednesday and Thursday.
Solar UV Index
Moderate on Wednesday. Low to moderate on Thursday.
TOMORROW - Thursday 21st May
Mostly cloudy with patchy rain, drizzle and mist to begin, tomorrow Thursday. A more persistent spell of rain will spread northwards over the region during the afternoon. Some limited spells of hazy sunshine may develop in the east of the region towards evening. Highest temperatures of 14 to 17 degrees, in light to moderate southerly winds, increasing fresh at times near the coast.
National Outlook
Overview: Temperatures on the rise through the rest of this week with high pressure becoming more dominant this weekend.
Thursday Night: Cloudy conditions in the west and south-west with patchy outbreaks of rain and drizzle will spread eastwards to all parts on Thursday night. There'll be a few mist patches too, along with hill and coastal fog in the south. Another mild night, with lowest temperatures of 11 to 13 degrees, with light to moderate southerly winds.
Friday: Mostly cloudy to begin on Friday with patchy rain, drizzle and mist. Cloud will break up through the afternoon with sunny spells and a few showers developing. It'll remain cloudy along western and southern coasts, though. Highest temperatures of 14 to 20 degrees, warmest across the midland, north and east, with moderate southerly winds, easing light to moderate south to southwest later. Any showers will largely die out on Friday night leaving variable cloud amounts and clear breaks. There'll be patches of mist along with hill and coastal fog too. Lowest temperatures 9 to 12 degrees in mainly light south-west or variable breezes.
Saturday: Saturday looks set to be a mostly dry day with warm sunny spells developing for most and just the chance of an odd shower in Atlantic coastal parts. Highest temperatures of 17 to 21 degrees generally, a little cooler in coastal fringes, in light southerly or variable breezes.
Sunday: Current indications suggest Sunday will be a dry, warm and sunny day for most, although mist and fog may linger in some coastal areas. Some thicker cloud and patchy rain or drizzle could affect the northwest. Highest temperatures of 18 to 22 degrees in light south-east or variable breezes.
Early Next Week: High pressure looks set to dominate into early next week with generally dry and settled conditions persisting and daytime highs potentially reaching the mid-twenties in places.
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.