National Forecast
Issued at: 02 September 2026 05:30
TODAY - Wednesday 2nd September
A generally dull, damp and humid day. While the heavier and more persistent rain will clear from most areas through the morning, though lingering in Ulster for longer, patchier outbreaks of rain, drizzle and mist will continue through the day. Some limited sunny spells may break through as the day progresses, especially further south and east. Highest temperatures of 16 to 22 degrees, warmest in the east and southeast, with light to moderate southeasterly winds veering southwesterly and freshening.
TONIGHT
Starting off mostly cloudy with well-scattered showers. Clear spells will become more frequent as the night progresses. A mild night with lowest temperatures ranging from 11 degrees in the north to 16 degrees in the south, with a light to moderate southwesterly breeze.
TOMORROW - Thursday 3rd September
A dry start for many with just a few showers about and also some sunny spells. However, cloud will build from the west through the morning and afternoon with rain following to most areas through the afternoon and evening. The rain will be heavy and persistent at times. Highest temperatures ranging from 16 degrees in the northwest to 21 degrees in the southeast, with moderate to fresh southwesterly winds.
National Outlook
Overview: Turning wet and breezy at times as unsettled conditions continue for the remainder of the week and into the weekend.
Thursday night: Starting off wet with widespread rain, turning heavy at times. The rain will move southeastwards through the night, clearing the south of the country towards morning. Dryer and clearer conditions will follow, with just a few showers feeding into the northwest. Lowest temperatures of 11 to 15 degrees, with mostly light to moderate southwesterly winds, but stronger near southern and northwestern coasts.
Friday: Breezy with sunny spells and scattered showers. The showers will mainly affect the northern half of the country, especially Ulster, with parts of the south staying dry for the day. Cooler than previous days with highest temperatures ranging from 15 degrees in the northwest to 18 degrees in the southeast, with moderate to fresh westerly winds.
Friday night: Dry and clear for most with just a few showers affecting western and northern coastal area. Lowest temperatures of 9 to 12 degrees, with westerly winds easing light to moderate southwesterly.
Saturday: Turning wet and breezy from Saturday afternoon as rain spreads across the country from the southwest. While there is uncertainty in the detail, current indications are for the heaviest and most persistent rain in the west and north. Highest temperatures of 16 to 19 degrees, with southerly winds increasing moderate to fresh.
Sunday: Breezy again on Sunday with further rain or showers, easing in the evening. Highest temperatures of 18 to 22 degrees, with moderate to fresh southerly winds veering northwesterly.
Further outlook: Continuing unsettled into next week and turning wet and windy at times. Becoming cooler into midweek too.
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.