National Forecast
Issued at: 26 August 2026 13:00
TODAY - Wednesday 26th August
Mostly cloudy at first this afternoon with patches of mist and drizzle, mainly in the north and northeast. Some sunny spells will develop through the afternoon and evening but there will be some showers too, which may turn heavy and thundery. Mild and humid with highest temperatures of 17 to 23 degrees, in mostly light east to southeast breezes.
TONIGHT
Any lingering thundery showers will clear early tonight with mostly dry weather following. However, some areas of mist and fog will set in. Towards morning, rain will begin to feed into southern fringes. Mild and humid with temperatures not falling below 12 to 16 degrees, in mostly light northeast or variable breezes.
TOMORROW - Thursday 27th August
Thursday will start off dry in many areas. Rain across southern fringes will slowly extend to eastern and southern counties, heavy at times with the chance of thunderstorms and the potential for surface flooding. Drier and warmer across west and northwest counties with some sunny spells but the odd thundery shower may occur too. Highest temperatures of 18 to 24 degrees with mostly light northeast or variable breezes.
National Outlook
Overview: Unsettled with rain or showers, heavy or thundery at times.
Thursday night: Scattered outbreaks of rain will affect the country, locally heavy and thundery with the potential for some thunderstorms. However, it will likely become drier across the western half of the country. Patches of mist or fog may form in light variable mainly westerly breezes. Lowest temperatures of 13 to 16 degrees.
Friday will bring a mix of bright or sunny spells and scattered showers, some heavy and thundery, especially across Ulster during the afternoon and evening. Rather warm with highest temperatures of 18 to 23 degrees, warmest in the southeast with light to moderate northwest breezes. Dry for a time on Friday night, before wet weather arrives to the southwest and moves up much of the southern half of the country by morning.
On Saturday, low cloud and rain in the morning will quickly clear eastwards. Sunny spells and showers will follow from the west in the afternoon, with mostly dry weather following by evening with late sunshine. Highest temperatures of 16 to 21 degrees, coolest across northwest counties. Easterly breezes will become west to northwest later.
Sunday will be a dull wet day with outbreaks of rain for much of the day, heavy and persistent at times. Cooler everywhere with highest temperatures of 16 to 18 degrees and cyclonic variable mainly moderate westerly breezes.
Current indications suggest that the early days of next week will continue unsettled with rain or showers 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.