Sea Area Forecast
Forecast valid from: 06:00, Thursday 11 December 2025 until 06:00, 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
Southerly winds will reach gale force 8 at times today (Thursday) on Irish coastal waters from Malin Head to Howth Head to Roches Point and on the Irish Sea.
Atlantic Swell
Yes.
Meteorological Situation at 03:00 UTC
A deepening low of 954hPa centered approximately 400 nautical miles off the northwest coast of Ireland generates a strong to gale force strength southerly airflow over Ireland.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Valentia to Slyne Head to Rossan Point
Wind: Southerly force 7 or gale force 8, veering westerly force 5 or 6 imminent. Soon becoming southwesterly force 4 to 6, and occasionally reaching force 7 by the end of the period.
Weather: Mostly fair with scattered showers, heavy at times with the slight chance of hail and isolated thunderstorms. Becoming cloudy later with outbreaks of rain.
Visibility: Good, reducing moderate or poor in any precipitation.
Forecast for Irish coastal waters from Rossan Point to Wicklow Head to Valentia and for the Irish Sea
Wind: Southerly force 7 or gale force 8, veering westerly force 3 or 4 between Dungarvan and Valentia imminent. Soon decreasing west to southwest force 3 to 5, but maintaining southerly force 5 or 6, and occasionally force 7 on the Irish sea. Later becoming west to southwest force 3 to 5, and occasionally force 6 between Rossan Point and Malin Head.
Weather: Becoming fair with isolated showers, heavy at times in the north and south with the slight chance of hail and isolated thunderstorms. Cloudy by the end of the period with rain and drizzle.
Visibility: Good, reducing moderate or poor in any precipitation.
Outlook for a further 24 hours until 06:00, Saturday 13 December 2025
Moderate to fresh southwesterly winds, strong and gusty on west and northern Atlantic coasts. Southwesterly winds will strengthen to gale force on south, west and northern coasts on Saturday morning. Weather: Mostly fair with scattered showers. Becoming cloudy by end of period with outbreaks of rain and drizzle.
Forecast issued at: 06:00, Thursday 11 December 2025
All times are local unless specified
