Sea Area Forecast
Forecast valid from: 06:00, Tuesday 16 December 2025 until 06:00, Wednesday 17 December 2025
Small Craft Warning
1. Southwesterly winds will occasionally reach force 6 today (Tuesday) on Irish coasts from Erris Head to Rossan Point to Malin Head 2. Southerly winds will increase to force 6 or higher this evening (Tuesday) on coasts from Mizen Head to Slyne Head to Fair Head
Gale Warning
Southerly winds will increase to gale force 8 tonight (Tuesday) on all Irish coastal waters and on the Irish Sea and will reach strong gale force 9 at times on west and northwest coasts.
Atlantic Swell
Today on Atlantic coasts
Meteorological Situation at 03:00 UTC
A weak ridge of high pressure extends a moderate to fresh west to northwest over Ireland. A freshening west to southwest airflow develops as a depression of 990 hPa tracks well to the north of Ireland.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Mizen Head to Loop Head to Erris Head
Wind: West to southwest force 3 to 5, soon backing southerly force 4 or 5, later increasing gale force 8 or strong gale force 9, decreasing south to southwest force 6 or 7 by the end of the period.
Weather: Well scattered showers today. Rain tonight
Visibility: Good, decreasing moderate or poor in showers today and in rain tonight
Forecast for Irish coastal waters from Erris Head to Bloody Foreland to Fair Head
Wind: Southwest force 5 or 6, later backing southerly and increasing force 7 or gale force 8, occasionally strong gale force 9 between Erris Head and Bloody Foreland.
Weather: Well scattered showers today. Rain tonight
Visibility: Good, decreasing moderate or poor in showers today and in rain tonight
Forecast for Irish coastal waters from Fair Head to Wicklow Head to Mizen Head and for the Irish Sea
Wind: West to northwest force 2 to 4, soon backing westerly, later backing southerly and increasing force 7 or gale force 8 overnight
Weather: Mainly fair. Localised mist and fog patches for a time today. Rain developing overnight
Visibility: Good, decreasing moderate or poor in any mist or fog and in rain overnight.
Outlook for a further 24 hours until 06:00, Thursday 18 December 2025
Fresh south to southwest winds on western coasts later increasing fresh to strong southwesterly. Southerly winds continuing strong to gale force on eastern coasts and the Irish Sea, decreasing fresh in the evening. Rain on Wednesday, gradually clearing scattered showers following.
Forecast issued at: 06:00, Tuesday 16 December 2025
All times are local unless specified
