National Forecast
Issued at: 16 March 2026 05:30
TODAY - Monday 16th March
Mostly cloudy today with outbreaks of rain and drizzle spreading northeastwards this morning, heaviest across Connacht and Ulster. While it will become drier into this afternoon, the odd spot of drizzle will still occur, with hill, mist and coastal fog in places. Highest temperatures of 10 to 12 degrees in a freshening southwest breeze.
TONIGHT
Tonight will be cloudy and breezy with patches of mist and drizzle. Generally dry however, across most areas. Lowest temperatures of 4 to 9 degrees, coolest across Ulster under clear spells.
TOMORROW - Tuesday 17th March
Tuesday, St Patrick's Day, will be relatively mild but noticeably breezy, if not rather windy, with outbreaks of rain across Atlantic counties, while staying largely dry elsewhere with some sunny spells. Highest temperatures of 11 to 15 degrees in a fresh to strong and gusty southwest wind.
National Outlook
Outlook: Becoming settled from midweek with mostly dry and fairly calm weather. Mild in any sunshine too.
Tuesday night: Mostly dry but with some mist, drizzle and fog in places. Lowest temperatures of 2 to 9 degrees, coldest under clearing skies across Atlantic counties, in just light to moderate southwest breezes.
Wednesday: Patchy rain or drizzle will occur, but amounts will be minimal with some areas staying fully dry. Early morning mist and fog will tend to clear, and some sunny spells will develop later in the day. Relatively mild with light easterly or variable breezes. Highest temperatures of 11 to 16 degrees, mildest across Leinster and south Munster.
Thursday: A pleasant day with widespread spring sunshine. Mild with highest temperatures of 12 to 18 degrees in no more than moderate easterly winds, feeling cool though along exposed coasts. Cold after dark with lows of 1 to 4 degrees.
Friday: Another dry day with spells of hazy sunshine in just light easterly breezes. Highest temperatures of 12 to 17 degrees, best values further west.
This weekend: Turning somewhat cooler but staying dry and settled with just light breezes.
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.