National Forecast
Issued at: 27 May 2026 05:00
TODAY - Wednesday 27th May
Very warm or hot today. Generally dry and sunny until later in the afternoon as scattered thunderstorms begin to move up from the south. While many areas will escape these, where they do hit, they could be severe with lightning and hail. Top temperatures of 22 to 31 degrees, hottest in the midwest and west, though a little lower for some east and northeast coasts due to a mostly moderate easterly breeze.
TONIGHT
Clear spells and the potential for further scattered thunderstorms early tonight but it will become largely dry for a time. Cloud, mist and drizzle along with some fog will develop across the southwestern half of the country by morning. Mild with temperatures not falling below 11 to 16 degrees in light to moderate east or southeast breezes.
TOMORROW - Thursday 28th May
Sunny spells in the north and east tomorrow morning but cloud will continue to build from the southwest bringing patchy light rain, drizzle and mist. However, there will still be a lot of dry weather and limited sunny spells will break through, especially from the southwest during the evening. Highest temperatures of 17 to 23 degrees generally, but reaching 24 or 25 degrees in parts of the north and east. Moderate southeasterly winds will veer southwesterly and will freshen for Atlantic coasts.
National Outlook
Overview: Largely dry on Friday. Turning cooler and more unsettled for the long weekend.
Thursday night: A good deal of cloud in the north and west with patchy light rain and drizzle. Dry and with long clear spells elsewhere. Temperatures will not fall below 9 to 14 degrees with moderate, occasionally fresh southwest to west winds, easing light from the south later.
Friday: Any lingering patchy rain and drizzle in the north and west will clear away in the morning to leave a largely dry with plenty of sunshine and just isolated light showers. Highest temperatures of 17 to 22 or 23 degrees, warmest for Leinster, in light to moderate southwesterly winds, fresh at times in the north in the morning.
Friday night: Mostly dry at first with long clear spells. Cloud will build from the west later in the night with outbreaks of rain in the west and southwest by morning. Temperatures not falling below 9 to 13 degrees in mostly light southerly breezes with mist and fog patches developing.
Saturday: After a largely dry start with sunny spells, rain will spread eastwards over the country through the morning and afternoon, turning heavy at times, especially in the north later with the chance of isolated thunderstorms. A clearance to sunny spells and scattered showers will follow for the western half of the country through the evening. Highest temperatures ranging from 15 degrees in the west to 22 degrees in the east in moderate south or southwest winds.
Sunday: A mix of cloud, sunny spells and scattered showers, becoming more isolated later in the afternoon and evening. Highest temperatures of 15 to 19 degrees generally but reaching 20 or 21 degrees in parts of the east, all in light to moderate westerly winds.
Bank Holiday Monday: A cloudy and west start with showery outbreaks of rain, turning heavy at times. Sunny spells and scattered showers will follow from the west later. Highest temperatures of 16 to 21 degrees in moderate south or southwest winds.
Further Outlook: Unsettled with spells of rain and showers. Temperatures falling to mid-teens generally.
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.