Sea Area Forecast
Forecast valid from: 12:00, Friday 20 March 2026 until 12:00, Saturday 21 March 2026
Small Craft Warning
nil
Gale Warning
nil
Atlantic Swell
Developing on northwestern coasts early Saturday.
Meteorological Situation at 09:00 UTC
Ireland lies in a light to moderate variable airflow, between anticyclones centred over the North Sea and the mid-Atlantic and depressions centred near Greenland and west of Iberia.
Heavy Swell (>4m) : yes
Forecast for Slyne Head to Rossan Point to Malin Head
Wind: Southwesterly force 2 to 4.
Weather: Cloudy to fair. Some mist and fog patches. Isolated patches of drizzle possible too.
Visibility: Mostly good, decreasing moderate or poor in any drizzle or mist and fog.
Forecast for Malin Head to Carnsore Point to Slyne Head and for the Irish Sea
Wind: Imminent decreasing variable force 3 or less, but remaining variable force 3 or 4 north of Strangford Lough. Later becoming variable force 3 or less everywhere.
Weather: Fair or fine. Some mist and fog patches too.
Visibility: Mostly good, decreasing moderate or poor in any mist and fog.
Outlook for a further 24 hours until 12:00, Sunday 22 March 2026
Light variable winds in the east and south on Saturday will increase light to moderate westerly on Saturday night and into Sunday. Light to moderate southwesterly winds in the west and north will increase moderate to strong through Saturday, before veering northwesterly and easing moderate to fresh on Sunday morning. Weather: Cloud with outbreaks of light rain and drizzle will clear southwestwards on Saturday night and Sunday morning. Otherwise cloudy to fair with some mist and fog patches possible too on Saturday.
Forecast issued at: 12:00, Friday 20 March 2026
All times are local unless specified
