National Forecast
Issued at: 12 August 2026 22:00
TONIGHT
Tonight will be dry for many with clear spells. Cloudier conditions in parts of the west and southwest will bring patchy rain and drizzle. There will be some mist and fog too. Another mild and humid night with temperatures not falling below 15 to 19 or 20 degrees in a light southerly or variable breeze.
TOMORROW - Thursday 13th August
Tomorrow, Thursday, will be another humid and a generally very warm or hot day with sunny spells, the best of these across the midlands and east, while it'll be mostly cloudy in parts of the west and northwest for a time. There'll be showery outbreaks of rain or showers, mainly in parts of Connacht and Ulster, some of that heavy with the likelihood of some scattered thunderstorms. For Munster and Leinster, there'll be plenty of dry weather for much of the day, though there is the chance of a few sharp showers at any stage, while during the evening we'll see showers or showery rain moving eastwards, with the chance of a few isolated thunderstorms in the mix. Highest temperatures will generally range from 23 to 30 degrees, hottest across the midlands and east, while temperatures will be closer to 20 degrees in coastal parts of the west and southwest, where there'll be some hill and coastal mist and fog at times. Winds will be light to moderate mainly southwesterly.
National Outlook
Overview: Turning fresher by Friday with a return to a more Atlantic-driven regime by early next week.
Thursday Night: Any remaining showers or thunderstorms will ease eastwards on Thursday night, with clear spells and isolated showers following. Lowest temperatures of 12 to 17 degrees in light, occasionally moderate, westerly breezes.
Friday: Friday will be a fresher day with a mix of sunny spells and scattered showers spreading from the west, becoming increasingly isolated later. Maximum temperatures will fall back to between 17 and 23 degrees in light to moderate northwesterly winds. Mainly dry on Friday night with variable cloud and clear spells and just the chance of an odd shower in the west and north. Lowest temperatures of 10 to 13 degrees in mainly light west to northwest breezes.
Saturday: Saturday will be mainly dry with a mix of cloud, sunny spells and isolated showers. Highest temperatures will range from around 15 degrees in the northwest to 21 degrees in the southeast in a light to moderate west to northwest breeze.
Sunday: There is still a degree of uncertainty in the details for Sunday at present, but current indications suggest a mostly cloudy day with outbreaks of rain pushing in from the Atlantic, possibly turning heavy in the west and northwest later in the day. Highest temperatures of 15 to 19 degrees with light to moderate southeasterly winds freshening later near Atlantic coasts.
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.