Sea Area Forecast
Forecast valid from: 12:00, Wednesday 03 December 2025 until 12:00, Thursday 04 December 2025
Small Craft Warning
Southerly or cyclonic variable winds, veering westerly, will reach force 6 or higher from Wednesday afternoon on all Irish coasts, becoming confined to Irish coasts from Valentia to Slyne Head to Bloody Foreland by Thursday morning.
Gale Warning
Southerly or cyclonic variable winds, veering westerly will reach gale force 8 or strong gale force 9 at times on Irish coastal waters from Fair Head to Carnsore Point to Valentia and on the Irish Sea, this evening and for a time tonight.
Atlantic Swell
At times on Atlantic coasts.
Meteorological Situation at 09:00 UTC
Ireland lies in a moderate to fresh southwest airflow, with low pressure of 983hPa centred to the west of Ireland. An associated occlusion approaches the west coast and will track across Ireland later tonight and tonight.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Valentia to Erris Head to Rossan Point
Wind: Increasing southerly or cyclonic variable force 6 or 7 and gusty imminent. Soon decreasing westerly force 5 or 6, occasionally force 7 and gusty. Backing southwest towards the end of the period and increasing force 6 or 7.
Weather: Becoming cloudy with rain imminent, heavy at times with the chance of isolated thunder. Soon cloudy to fair with showers, some heavy, with a chance of hail and isolated thunder.
Visibility: Reducing moderate or poor in precipitation, otherwise good.
Forecast for Irish coastal waters from Rossan Point to Carlingford Lough to Carnsore Point and for the Irish Sea
Wind: Backing southerly imminent, mostly force 4 or 5, occasionally force 6 in the north and northwest. Soon southeasterly force 5 to 7 and gusty, reaching force 8 at times in the east and on the Irish Sea. Later decreasing westerly force 4 or 5, before backing south to southwest in the north and northwest towards the end of the period and increasing force 6 in the northwest.
Weather: Fair to cloudy with scattered showers, some heavy. Soon rain, heavy at times, with the chance of isolated thunder. Later rain clearing northeastwards, then cloudy to fair weather with isolated showers.
Visibility: Reducing moderate or poor in precipitation, otherwise good.
Forecast for Irish coastal waters from Carnsore Point to Roches Point to Valentia
Wind: Increasing southerly or cyclonic variable force 6 to gale force 8 and gusty imminent, occasionally strong gale force 9. Soon decreasing westerly force 5 to 7. Later decreasing force 4 or 5.
Weather: Fair to cloudy with scattered showers. Rain moving eastwards imminent, some of it heavy, with the chance of isolated thunder. Becoming cloudy to fair soon with scattered showers, some heavy, with a chance of hail and isolated thunder.
Visibility: Reducing moderate or poor in precipitation.
Outlook for a further 24 hours until 12:00, Friday 05 December 2025
Strong to near gale force and gusty mainly southwesterly winds veering westerly, in the west and north, occasionally reaching gale force on Thursday, gradually easing mostly moderate to strong early on Thursday night. Elsewhere mostly moderate to fresh southwesterly winds. Winds backing southerly in all areas later Thursday night and Friday morning and increasing strong to gale force. Weather: Cloudy to fair with scattered showers. Showers or longer spells of rain, mainly for Atlantic sea areas, some heavy or thundery. Rain in the south and west by the end of the period.
Forecast issued at: 12:00, Wednesday 03 December 2025
All times are local unless specified
