An Mhumhain
Issued at: 27 September 2026 05:30
TODAY - Sunday 27th September
A wet start for many at first this morning with outbreaks of rain, heavy or thundery in places, with the chance of localised flooding, especially in the south. A clearance to sunny spells and isolated showers moving into the southwest, will extend to all areas through the morning. Highest temperatures of 14 to 17 degrees in mostly light to moderate, occasionally fresh, cyclonic variable winds at first, strong along the south coast for a time, becoming moderate to fresh westerly as the rain clears and decreasing light to moderate later.
TONIGHT
Tonight will bring a good deal of dry weather with clear spells, and just the odd isolated shower, mainly further west. Lowest temperatures of 5 to 9 degrees with winds becoming mostly light southerly, moderate near western coasts.
Pollen Forecast
Low on Sunday and Monday
Solar UV Index
Low on Sunday and Monday
TOMORROW - Monday 28th September
Tomorrow, Monday, will be mostly dry and bright with long spells of sunshine, turning hazy at times and with just a few isolated showers. Highest temperatures of 14 to 17 degrees in mostly light to moderate southerly winds, backing southeasterly and freshening in western and southwestern coastal parts.
National Outlook
Overview: Largely dry at first. Turning more unsettled for midweek, especially on Tuesday with wet and rather windy conditions.
Sunday night: Mostly dry and clear, though a few showers will occur, mainly for Atlantic coastal areas. Lowest temperatures of 6 to 10 degrees in mostly light southerly breezes.
Monday: Mostly dry with sunshine turning hazy at times, and with isolated showers. Highest temperatures of 15 to 17 degrees generally in light to moderate southerly breezes, becoming southeasterly later and freshening near Atlantic coasts.
Monday night: Largely dry with clear spells. Cloud will build in the south later, with some rain possible for southern coasts by morning. Lowest temperatures of 9 to 13 degrees in moderate to fresh and gusty southeasterly winds, stronger near Atlantic coasts.
Tuesday: Rather windy with outbreaks of rain extending northwards, heavy in places with localised flooding possible. A clearance to blustery showers will begin to follow from the southwest in the evening. Highest temperatures of 16 to 19 degrees in fresh to strong and gusty southeasterly winds, stronger near coasts.
Wednesday: Sunny spells and scattered blustery showers, heavy at times with thunderstorms possible, especially over the eastern half of the country in the afternoon. Highest temperatures of 15 to 18 degrees in moderate to fresh south to southwest winds, stronger at times for Atlantic coasts.
Further Outlook: Current indications are for further spells of rain or showers through the rest of the working week, but tentative signs of high pressure building for the weekend, bringing drier conditions, though rain may still encroach into the north and west at times.
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.