Sea Area Forecast
Forecast valid from: 06:00, Wednesday 17 December 2025 until 06:00, Thursday 18 December 2025
Small Craft Warning
South or southwest winds will reach force 6 or higher through the period on all Irish coasts.
Gale Warning
South to southwest winds will reach gale force 8 or strong gale force 9 at times until Wednesday afternoon on all Irish coastal waters and on the Irish Sea.
Atlantic Swell
On Atlantic Coasts
Meteorological Situation at 03:00 UTC
Low pressure of 947hPa southwest of Iceland extends a complex trough southeast towards Ireland. High pressure of 1024hPa remains over the Azores.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Roches Point to Slyne Head to Malin Head.
Wind: Southwest force 6 or 7 imminent.
Weather: Cloudy with showers, some heavy.
Visibility: Reducing moderate in showers.
Forecast for Irish coastal waters from Malin Head to Wicklow Head to Roches Point and for the Irish Sea.
Wind: Southwest gale force 8 or strong gale force 9. Becoming southwest force 6 or 7 imminent.
Weather: Cloudy with showers.
Visibility: Reducing moderate in showers.
Outlook for a further 24 hours until 06:00, Friday 19 December 2025
Fresh to strong southwest winds. Becoming fresh to strong southerly but westerly in the west for a time Thursday morning. Weather: Cloudy with showers, some heavy with hail possible.
Forecast issued at: 06:00, Wednesday 17 December 2025
All times are local unless specified
