Sea Area Forecast
Forecast valid from: 12:00, Thursday 11 December 2025 until 12:00, 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
On southwestern, western and northwestern coasts.
Meteorological Situation at 09:00 UTC
A deepening depression of 941hPa centered to the south of Iceland generates a strong to gale force southerly airflow over Ireland. An associated cold front crosses Ireland today.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Fair Head to Wicklow Head to Mizen Head and for the Irish Sea
Wind: Southerly force 6 or 7, occasionally reaching gale force 8. Soon decreasing southwesterly force 3 or 4, occasionally reaching force 5. Later increasing force 4 or 5, occasionally reaching force 6.
Weather: Cloudy to fair with isolated showers. Widespread rain extending from the west imminent, heavy at times. Soon becoming cloudy to fair with isolated showers.
Visibility: Good, reducing moderate or poor in precipitation.
Forecast for Irish coastal waters from Mizen Head to Erris Head to Fair Head
Wind: Southwesterly force 5 or 6 imminent, occasionally reaching force 7 and gusty.
Weather: Cloudy with outbreaks of rain and drizzle. Becoming cloudy to fair imminent with scattered showers, turning heavy at times with a chance of hail and isolated thunderstorms.
Visibility: Good, reducing moderate or poor in precipitation.
Outlook for a further 24 hours until 12:00, Saturday 13 December 2025
Fresh to strong and gusty southwesterly winds. Increasing strong to gale force winds on Friday night, reaching strong gale force in the northwest on Saturday morning. Weather: Cloudy to fair with scattered showers, turning heavy at times with a chance of hail and isolated thunderstorms. Becoming cloudy with rain extending from the northwest on Saturday morning.
Forecast issued at: 12:00, Thursday 11 December 2025
All times are local unless specified
