National Forecast
Issued at: 27 September 2026 05:00
TODAY - Sunday 27th September
A wet start this morning with outbreaks of rain, heavy and possibly thundery in places, heaviest further to the south, with some localised flooding. A clearance to sunny spells will move into the southwest in the early morning, extending to the northeast by the early afternoon. Some well scattered showers will follow too, a few heavy later, in parts of the north and northwest. Winds will be mostly moderate to fresh and gusty south to southeast for a time, strong near southern and eastern coasts, and light to moderate cyclonic variable at first in the southwest, before becoming moderate to fresh westerly as the rain clears, increasing strong at times in coastal parts of the northwest and west, before easing in the evening. Highest temperatures of 14 to 18 degrees.
TONIGHT
Tonight will bring a good deal of dry weather with clear spells, though with some scattered showers, mainly further west. Lowest temperatures of 5 to 10 degrees with winds becoming mostly light southerly, moderate near western and northwestern coasts.
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 18 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.