Sea Area Forecast
Forecast valid from: 00:00, Tuesday 16 December 2025 until 00:00, Wednesday 17 December 2025
Small Craft Warning
1. Southwesterly winds will occasionally reach force 6 on Irish coasts from Slyne Head to Rossan Point to Fair Head overnight and on Tuesday. 2. Southerly winds will increase to force 6 or higher on Tuesday evening on coasts from Mizen Head to Slyne Head to Fair Head
Gale Warning
Southerly winds will increase to gale force 8 early on Tuesday night on coasts from Valentia to Slyne Head to Bloody Foreland
Meteorological Situation at 21:00 UTC
A weak ridge of high pressure extends a moderate to fresh west to northwest over Ireland. A freshening west to southwest airflow will develop as a depression of 987 hPa tracks well to the north of Ireland
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : Nil
Forecast for Irish coastal waters from Mizen Head to Loop Head to Slyne Head
Wind: West to southwest force 3 to 5, later gradually backing southerly and increasing force 7 or gale force 8 by the end of the period.
Weather: Well scattered showers
Visibility: Good, decreasing moderate or poor in showers
Forecast for Irish coastal waters from Slyne Head to Rossan Pt to Fair Head
Wind: Southwest force 4 to 6, soon increasing force 5 or 6, later gradually backing southerly and increasing force 6 to gale force 8 by the end of the period.
Weather: Well scattered showers
Visibility: Good, decreasing moderate or poor in showers
Forecast for Irish coastal waters from Fair Head to Wicklow Head to Mizen Head and for the Irish Sea
Wind: West to northwest force 3 or 4, soon backing westerly, later gradually backing southerly and increasing force 6 or 7 by the end of the period.
Weather: Mainly fair. Localised mist and fog patches overnight and on Wednesday morning.
Visibility: Good, decreasing moderate or poor in any mist or fog.
Outlook for a further 24 hours until 00:00, Thursday 18 December 2025
Strong to gale force southerly winds reaching strong gale fore for a time on west and northwest coasts, decreasing moderate to fresh on western coasts on Wednesday morning, continuing strong to gale force on eastern coasts and the Irish Sea, decreasing moderate to fresh in the evening. Rain spreading eastwards overnight, clearing on Wednesday with scattered showers following.
Forecast issued at: 00:00, Tuesday 16 December 2025
All times are local unless specified
