Sea Area Forecast
Forecast valid from: 00:00, Wednesday 19 November 2025 until 00:00, Thursday 20 November 2025
Small Craft Warning
Northerly winds will reach force 6 or higher on all coasts.
Gale Warning
Northerly winds will reach gale force 8 at times this morning (Wednesday), on Irish coastal waters from Belfast Lough to Howth Head to Carnsore Point, and on the Irish Sea.
Meteorological Situation at 21:00 UTC
Low pressure of 1002hPa situated to the northwest of Norway extends a trough across the southeast of Ireland. High pressure of 1038hPa lies over Iceland. In between a strong to near gale force northerly airflow is generated over Ireland.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : Nil
Forecast for Irish coastal waters from Slyne Head to Carlingford Lough to Roche's Point and for the Irish Sea
Wind: Northerly force 6 or 7, and occasionally gale force 8 on the Irish sea. Later decreasing north to northwest force 4 to 6, occasionally reaching force 7 on the Irish sea.
Weather: Mostly fair with scattered showers, turning increasingly wintery with a chance of thunder and hail.
Visibility: Good, reducing moderate or poor in showers.
Forecast for Irish coastal waters from Roche's Point to Loop Head to Slyne Head
Wind: North to northwest force 4 to 6, reaching force 7 at times between Slyne Head and Valentia. Later decreasing force 4 or 5, and occasionally force 6. Backing northwest by the end of the period.
Weather: Mostly fair with scattered showers, with a chance of turning wintery in the west.
Visibility: Good, reducing moderate or poor in showers.
Outlook for a further 24 hours until 00:00, Friday 21 November 2025
Further outlook: Fresh to strong northerly winds will gradually ease light to moderate on Friday, and back southerly along the west Atlantic coast. Weather: Mostly fair with scattered showers, wintery at times.
Forecast issued at: 00:00, Wednesday 19 November 2025
All times are local unless specified
