National Forecast

17 May 2026 05:00

Today - Sunday 17th May

Showers in the west will become widespread this morning, turning heavy and persistent at times with a chance of thunderstorms and hail. It will be generally cloudy today with limited sunny spells. Becoming breezy with moderate to fresh west to southwest winds developing, and highest temperatures of 9 to 12 degrees.

Tonight - Sunday 17th May

Tonight, becoming dry for most with clear spells as showers ease early on. Staying cloudier in the southwest as showers give way to outbreaks of rain and drizzle. Lowest temperatures of 2 to 6 degrees, mildest in the southwest, with patches of mist and fog forming in light westerly or variable breezes.

Tomorrow - Monday 18th May

A dry and bright start for most tomorrow, with patches of mist and fog in places. Cloud and rain in the southwest will gradually spread northeastwards through the morning and afternoon with the rain turning heavy at times, though Ulster and north Leinster will stay dry for much of the day. Highest temperatures of 11 to 14 degrees in moderate to fresh south to southeast winds.

Outlook

Overview: Continuing unsettled with rain or showers but gradually becoming milder in a southwesterly airflow.

Monday night: Wet with widespread outbreaks of rain gradually clearing northeastwards. Scattered showers will follow from the southwest, turning heavy at times. Milder than previous nights with temperatures not falling below 8 to 11 degrees in a light to moderate southerly breeze.

Tuesday: Cloudy for most with widespread showers turning heavy and persistent at times. Breezy too with a moderate, occasionally fresh, southwest wind, and highest temperatures of 11 to 15 degrees.

Tuesday night: Continuing cloudy for most with showery outbreaks of rain. Lowest temperatures of 8 to 11 degrees in light to moderate southwesterly breezes.

Wednesday: A mix of sunny spells and scattered light showers at first. Turning cloudier from the southwest through the day as showers ease. Highest temperatures of 13 to 17 degrees in moderate, occasionally fresh southwesterly winds.

Thursday: A dull day for most with scattered outbreaks of rain and drizzle. Some mist and hill fog forming too. Highest temperatures of 14 to 18 or 19 degrees in mostly moderate southerly winds.

Further outlook: There is uncertainty in the details but further rain and showers are likely on Friday.