Sea Area Forecast
Forecast valid from: 00:00, Thursday 11 December 2025 until 00:00, Friday 12 December 2025
Small Craft Warning
South to southwest winds will reach force 6 or higher at times on all Irish coasts during the period.
Gale Warning
Southwest winds backing southerly will reach gale force 8 at times this evening and early tonight on Irish coastal waters from Roches Point to Loop Head to Bloody Foreland extending to all Irish coastal waters and the Irish Sea overnight and reaching strong gale force 9 at times between Mizen Head and Rossan Point.
Atlantic Swell
Yes
Meteorological Situation at 21:00 UTC
A deepening depression of 967hPa, centered approximately 400 nautical miles west of Erris Head, advects mostly strong to gale force southerly winds, with associated weather fronts moving eastwards over Ireland during the period.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Mizen Head to Rossan Point to Malin Head
Wind: Southerly force 7 or gale force 8, increasing to gale force 8 or strong gale force 9 imminent. Soon veering westerly force 4 or 5, and occasionally force 6. Later backing southwesterly force 5 or 6, and occasionally force 7.
Weather: Cloudy with rain imminent, heavy at times. Becoming cloudy to fair with scattered showers later. Possible mist patches too.
Visibility: Good, reducing moderate or poor in any precipitation or mist.
Forecast for Irish coastal waters from Malin Head to Carnsore Point to Mizen Head and for the Irish Sea
Wind: South to southwest force 6 or 7, increasing force 7 or gale force 8 imminent. Soon veering westerly force 4 or 5 between Roches Point and Mizen Head. Later decreasing south to southwest or variable force 3 or 4, but maintain southerly force 6 or 7 between Carlingford Lough and Carnsore Point, and on the Irish sea. Gradually easing west to northwest of variable force 3 to 5 by the end of the period.
Weather: Cloudy with outbreaks of rain and drizzle soon, heavy at times. Possible mist patches too.
Visibility: Good, reducing moderate or poor in any precipitation or mist.
Outlook for a further 24 hours until 00:00, Saturday 13 December 2025
Moderate northerly or variable winds, southerly and increase strong to near gale force and gusty on west Atlantic coasts. Fresh to strong southwesterly winds will extend to all coasts Friday evening. Weather: Mostly fair with scattered showers, heavy at times with the chance of hail and isolated thunderstorms. Becoming cloudy on Friday night with outbreaks of rain and drizzle.
Forecast issued at: 00:00, Thursday 11 December 2025
All times are local unless specified
