Sea Area Forecast
Forecast valid from: 00:00, Saturday 20 December 2025 until 00:00, Sunday 21 December 2025
Small Craft Warning
South to southwest winds will reach force 6 or higher on all Irish coasts throughout the period.
Gale Warning
Southeast to south winds will reach gale force tonight (Friday night) on Irish coastal waters from Roches Point to Loop Head to Erris Head, extending to Irish coastal waters from Howth Head to Mizen Head to Rossan Point through tomorrow.
Atlantic Swell
Yes
Meteorological Situation at 21:00 UTC
A depression of 964hPa centered to the southwest of Iceland generates a fresh to strong south to southeast airflow over Ireland.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Roche's Point to Loop Head to Rossan Point
Wind: Southerly force 6 or 7, increasing southeast force 7 or gale force 8 imminent. Soon veering westerly force 5 to 7, and occasionally gale force 8. Later decreasing westerly force 3 or 4 and occasionally force 5.
Weather: Fair to cloudy with scattered showers. Rain developing soon. Becoming mostly fair by the end of the period.
Visibility: Good, reducing moderate or poor in all precipitation.
Forecast for Irish coastal waters from Rossan Point to Carlingford Lough to Roche's Point and for the Irish Sea
Wind: Southerly force 4 to 6, backing south to southeast force 5 or 6 and occasionally force 7 imminent. Soon increasing southeast force 6 to gale force 8. Decreasing force 5 to 7 between Bloody Foreland and Carnsore Point, and on the Irish sea later. Decreasing westerly force 3 or 4 or variable between Carnsore Point and Roches Point by the end of the period.
Weather: Fair to cloudy with isolated showers. Rain spreading from the west soon. Fair to cloudy with isolated showers. Rain spreading from the west soon.
Visibility: Good, reducing moderate or poor in all precipitation.
Outlook for a further 24 hours until 00:00, Monday 22 December 2025
Light or variable southerly winds, will remain fresh to strong and gusty in the north, east and on the Irish sea, and gradually ease moderate to fresh on Sunday, veering east to southeast. Cloudy to fair with rain clearing northeastwards. Scattered showers will follow, merging into showery spells of rain at times.
Forecast issued at: 00:00, Saturday 20 December 2025
All times are local unless specified
