Sea Area Forecast
Forecast valid from: 18:00, Sunday 21 December 2025 until 18:00, Monday 22 December 2025
Small Craft Warning
1. Easterly winds will reach force 6 at times tonight (Sunday night) and tomorrow morning on Irish coasts from Fair Head to Strangford Lough to Howth Head. 2. Easterly winds will reach force 6 Monday evening on Irish coasts from Carnsore Point to Hook Head to Dungarvan.
Gale Warning
Nil
Atlantic Swell
On Atlantic coasts this evening and tonight.
Meteorological Situation at 15:00 UTC
Ireland lies in a moderate to fresh easterly airflow, with an elongated complex area of low pressure of 998hPa centred over western France. An associated frontal trough lies over the southwest.
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Valentia to Erris Head to Malin Head
Wind: East to northeast force 3 or 4 and occasionally force 5. Soon backing northeast to north.
Weather: Cloudy to fair with rain and drizzle in the southwest clearing imminent. Occasional mist and fog patches. Scattered outbreaks of rain and drizzle later.
Visibility: Moderate or poor in precipitation, mist and fog.
Forecast for Irish coastal waters from Malin Head to Carnsore Point to Valentia and for the Irish Sea
Wind: East to northeast force 4 or 5, increasing force 6 at times. Later veering east to southeast.
Weather: Cloudy with outbreaks of rain and drizzle. Mist patches possible. Becoming mostly fair later.
Visibility: Moderate or poor in precipitation and mist.
Outlook for a further 24 hours until 18:00, Tuesday 23 December 2025
Mostly light to moderate variable winds in the west, becoming northeasterly and freshening through Tuesday. Mostly moderate to fresh southeasterly winds elsewhere, becoming easterly and increasing strong at times in the south. Weather: Cloudy to fair with rain and drizzle at times. Mist and isolated fog patches.
Forecast issued at: 18:00, Sunday 21 December 2025
All times are local unless specified
