National Forecast
Issued at: 26 September 2026 20:30
TONIGHT
Mostly dry at first tonight with clear spells and well scattered showers. Cloud will build from the southwest with rain moving up from the south and in from the west overnight, reaching most areas by morning. The rain will be heavy or thundery in places, especially in southern areas, with localised flooding possible. Lowest temperatures of 10 to 15 degrees with south to southeasterly winds increasing moderate to fresh and occasionally gusty, strong in some coastal parts, especially in the west and south.
TOMORROW - Sunday 27th September
A wet start tomorrow with outbreaks of rain, heavy or thundery in places. A clearance to sunny spells and generally just isolated showers will develop in the southwest in the early morning, extending to the northeast by mid-afternoon. Later in the afternoon and evening, there'll be more in the way of showers in parts of the north and northwest, some heavy. Moderate to fresh and gusty southerly winds, stronger at times near southern and eastern coasts, will veer westerly as the rain clears, and will ease in the evening. Highest temperatures of 14 to 18 degrees.
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.