Sea Area Forecast
Forecast valid from: 06:00, Tuesday 09 December 2025 until 06:00, Wednesday 10 December 2025
Small Craft Warning
East to southeast winds, gradually veering southwesterly, will reach force 6 on all Irish coasts through the period.
Gale Warning
Southerly winds, later veering southwesterly, will reach gale force 8 or strong gale force 9 through the period on all Irish coastal waters and on the Irish Sea, increasing to storm force 10 or violent storm force 11 on Irish coastal waters from Mizen Head to Slyne Head to Malin Head.
Atlantic Swell
On southern and western coasts.
Meteorological Situation at 03:00 UTC
A depression of 971hPa centred approximately 200 nautical miles southwest of Mizen Head will intensify as it tracks to the west of Ireland today, evolving into Storm Bram. Associated weather fronts will also pass over the country.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Loop Head to Malin Head to Belfast Lough
Wind: East to southeast force 6 or near gale force 7, and reaching gale force 8 at times. Soon increasing southwesterly gale force 8 or strong gale force 9, but reaching storm force 10 or possibly violent storm force 11 west of Malin Head. Decreasing mostly force 6 or near gale force 7, but still reaching gale force 8 at times, by the end of the period.
Weather: Cloudy with outbreaks of rain and drizzle. Later becoming fair with scattered showers and with a chance of thunderstorms. Some mist patches too.
Visibility: Decreasing moderate or poor in precipitation or mist, otherwise good.
Forecast for Irish coastal waters from Belfast Lough to Carnsore Point to Loop Head and for the Irish Sea
Wind: Imminent increasing southerly gale force 8 or strong gale force 9, but reaching storm force 10 or violent storm force 11 west of Mizen Head. Soon decreasing force 6 or near gale force 7 west of Dungarvan. Later decreasing southwesterly force 6 or near gale force 7 everywhere.
Weather: Cloudy with outbreaks of rain and drizzle. Soon becoming fair with scattered showers and with a chance of thunderstorms. Some mist patches too.
Visibility: Decreasing moderate or poor in precipitation or mist, otherwise good.
Outlook for a further 24 hours until 06:00, Thursday 11 December 2025
Mostly strong to near gale force southwesterly winds, but reaching gale force at times, through Wednesday. Increasing to gale force or even strong gale force in the west on Wednesday night. Weather: Cloudy to fair with scattered showers, some heavy with a chance of hail and thunderstorms. Rain in the west by the end of the period.
Forecast issued at: 06:00, Tuesday 09 December 2025
All times are local unless specified
