Sea Area Forecast
Forecast valid from: 12:00, Monday 15 December 2025 until 12:00, Tuesday 16 December 2025
Small Craft Warning
Southwesterly winds will occasionally reach force 6 on Irish coasts from Slyne Head to Rossan Point to Malin Head through the period.
Gale Warning
Atlantic Swell
On Atlantic Coasts
Meteorological Situation at 09:00 UTC
Low pressure of 971hPa south of Iceland extends a weak trough south over Ireland. High pressure of 1028hPa builds over the Azores.
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Valentia to Erris Head to Belfast Lough.
Wind: Southwest force 5 or 6.
Weather: Fair with isolated showers.
Visibility: Good.
Forecast for Irish coastal waters from Belfast Lough to Carnsore Point to Valentia and for the Irish Sea.
Wind: Variable force 3 or less. Soon becoming westerly force 4 or 5.
Weather: Fair.
Visibility: Good.
Outlook for a further 24 hours until 12:00, Wednesday 17 December 2025
West to southwest winds becoming strong to near gale in the west Tuesday night. Strong to gale force southerly winds extending throughout Wednesday morning, changing southwesterly by Wednesday evening. Weather: Fair becoming cloudy with rain Tuesday night.
Forecast issued at: 12:00, Monday 15 December 2025
All times are local unless specified
