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: Unsettled with low pressure dominating bringing rain and showers. Breezy at times too.
Wednesday night: Well scattered showers and clear spells with moderate southwesterly breezes. A mild night with lowest temperatures of 13 to 16 degrees.
Thursday: Mainly dry to start with sunny spells and just well scattered showers. Outbreaks of rain will move in from the west through the afternoon, likely extending to most areas by the evening. Highest temperatures of 16 to 21 degrees with moderate to fresh west to southwest winds, strong at times near coasts.
Thursday night: Widespread outbreaks of rain will continue at first, heavy at times. The rain will likely become mostly confined to the south and southeast towards morning. Lowest temperatures of 12 to 16 degrees with moderate southwesterly winds, fresher along southern coasts.
Friday: A drier day for most with sunny spells and scattered showers, mainly affecting the north and northwest. Highest temperatures of 15 to 19 degrees with moderate to fresh westerly winds.
Saturday: There is uncertainty in the details with further outbreaks of rain likely. Highest temperatures of 15 to 19 degrees with mostly light southerly breezes.
Further outlook: Likely remaining unsettled on Sunday and Monday with further rain and showers.
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.