Sea Area Forecast
Forecast valid from: 18:00, Wednesday 03 December 2025 until 18:00, Thursday 04 December 2025
Small Craft Warning
Southerly winds veering westerly will reach force 6 or higher at times tonight on all Irish coasts, becoming confined to coasts from Mizen Head to Slyne Head to Malin Head tomorrow morning.
Gale Warning
Southerly winds veering westerly will reach gale force 8 at times tonight on Irish coastal waters from Strangford Lough to Carnsore Point to Valentia and on the Irish Sea.
Atlantic Swell
On Atlantic coasts on Thursday.
Meteorological Situation at 15:00 UTC
Ireland lies in a fresh to strong south to southwest airflow generated by a broad depression of 972hPa centred south of Iceland. The associated occlusion will track across Ireland this evening and tonight.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Malin Head to Howth Head to Roches Point and for the Irish Sea
Wind: Southerly force 5 or 6, increasing force 6 or 7 imminent and occasionally reaching gale force 8. Soon decreasing westerly force 4 or 5 but becoming cyclonic variable force 6 or 7 on the north Irish Sea. Later becoming west to southwest force 3 or 4.
Weather: Scattered showers. Rain imminent, occasionally turning heavy. Fair with isolated showers later.
Visibility: Moderate or poor in precipitation, otherwise good.
Forecast for Irish coastal waters from Roches Point to Slyne Head to Malin Head
Wind: Westerly force 5 or 6 imminent, occasionally reaching force 7. Soon becoming west to southwest force 4 or 5, occasionally reaching force 6. Later increasing force 5 or 6, reaching force 7 at times by the end of the period.
Weather: Rain. Soon becoming cloudy to fair with widespread showers, some heavy with a chance of hail and isolated thunderstorms.
Visibility: Moderate or poor in precipitation, otherwise good.
Outlook for a further 24 hours until 18:00, Friday 05 December 2025
Fresh to near gale force westerly winds, backing southerly and increasing strong to gale force on Friday morning. Reaching strong gale force at times Friday afternoon. Weather: Cloudy to fair with showers. Rain on Friday morning and afternoon, heavy at times with isolated thunderstorms possible. Showers on Friday night.
Forecast issued at: 18:00, Wednesday 03 December 2025
All times are local unless specified
