National Forecast
Issued at: 17 September 2025 03:36
TODAY - Wednesday 17th September
A damp start today. Any lingering overnight rain, drizzle and fog will clear eastwards in the morning. It'll be mostly cloudy in the morning with just limited bright spells, but there's likely to be more in the way of sunny spells through the afternoon. Highest temperatures of 15 to 19 degrees with moderate to fresh and gusty southwesterly winds, strong or near gale force near western and northern coasts.
TONIGHT
Tonight, showery outbreaks of rain will push up from the south, mainly affecting Munster and Leinster with some heavy falls possible. Staying largely dry in Ulster and Connacht with the longest clear spells in the northwest. Lowest temperatures of 8 to 13 degrees in mostly light to moderate southwesterly winds, fresh at first in the north and west and strengthening near southern coasts by morning.
TOMORROW - Thursday 18th September
Tomorrow will bring showery outbreaks of rain feeding northwards but dry periods too. It'll become rather humid with some hill and coastal fog. Highest temperatures of 16 to 19 degrees generally with light south or variable winds becoming a fresher south to southwesterly.
National Outlook
Wednesday night: Showery outbreaks of rain will push up from the south, mainly affecting Munster and Leinster with some heavy falls possible. Staying largely dry in Ulster and Connacht with the longest clear spells in the northwest. Lowest temperatures of 8 to 13 degrees in mostly light to moderate southwesterly winds, fresh at first in the north and west and strengthening near southern coasts by morning.
Thursday: Further showery outbreaks of rain likely in the south and east though with dry intervals at times. Drier and sunnier in the north and west with a few showers. Highest temperatures of 16 to 19 degrees generally with light to moderate southwesterly winds, fresher near southern and northwestern coasts.
Thursday night: Dry for most with isolated showers. However, showery outbreaks of rain may continue to affect southern and southeastern coastal areas. Lowest temperatures of 9 to 13 degrees in light to moderate southwesterly winds.
Friday: A mix of cloud and some sunny spells along with isolated showers for most. The best of the sunny spells will be in the north. Mostly cloudy though in southeastern areas with a continued chance of showery outbreaks of rain. Highest temperatures of 15 to 17 degrees in mostly light breezes.
Saturday: A good deal of uncertainty in the details at present. Most likely there will be a fair amount of dry weather with just some showers. However, there is a chance of a low pressure system moving northwards over the country bringing some heavy falls of rain.
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.