National Forecast
Issued at: 19 May 2026 23:30
TONIGHT
A mix of cloud and clear breaks early tonight with showers easing for a time. Cloud amounts will tend to increase from the Atlantic overnight with a few more showers spreading eastwards. Lowest temperatures of 8 to 11 degrees in mostly light to moderate south-west to west winds, fresh at times near Atlantic coasts. A few mist patches too.
TOMORROW - Wednesday 20th May
Variable cloud amounts, sunny spells and isolated showers on Wednesday. Cloud will thicken from the south-west later with patchy rain and drizzle pushing in towards evening and extending over Munster, south Connacht and south Leinster by nightfall. Highest temperatures of 14 to 18 degrees in light to moderate southwesterly winds becoming southerly in the evening.
National Outlook
Overview: Generally cloudy for the coming days with limited sunshine, along with some showers or spells of rain and drizzle. An improving picture for the weekend though, and with temperatures steadily increasing through the period.
Wednesday night: Cloudy with outbreaks of rain and drizzle clearing northeastwards through the night. Some hill and coastal mist and fog too. Mild with lowest temperatures of 11 to 13 degrees, with mostly moderate, occasionally fresh, southerly winds.
Thursday: Cloudy with just some patchy outbreaks of light rain or drizzle at first. More persistant, and at times heavy, rain will develop, especially over the western half of the county. There will be some hill and coastal mist and fog too. Highest temperatures of 14 to 19 degrees, warmest in the east and north, with moderate to fresh southerly winds.
Thursday night: Cloudy with some patchy outbreaks of rain or drizzle, along with some hill and coastal mist and fog in the south. Another mild night, with lowest temperatures of 11 to 13 degrees, with light to moderate southerly winds.
Friday: Continuing mostly cloudy with limited sunny spells and further patchy outbreaks of rain or drizzle. The best of the sunny spells are likely to be further east, with the heaviest of any rain further west. Highest temperatures of 14 to 20 degrees, warmest in north Leinster and Ulster, with moderate southerly winds.
Saturday: A mostly dry day with good sunny spells developing and just the odd shower. Highest temperatures of 15 to 20 degrees, with light to moderate westerly or variable breezes.
Further outlook: Generally dry, sunny and warm for Sunday, although some mist and fog may linger in coastal areas. Temperatures will continue to rise into next week, possibly reaching the mid-twenties at times, with some good sunshine, but also some showers or spells 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.