Sea Area Forecast
Forecast valid from: 18:00, Thursday 20 November 2025 until 18:00, Friday 21 November 2025
Small Craft Warning
1. Northerly winds will reach force 6 this evening and for a time tonight (Thursday night) on Irish coasts from Belfast Lough to Howth Head to Dungarvan. 2. Southerly winds will reach force 6 tomorrow morning (Friday) on Irish coasts from Slyne Head to Rossan Point to Fair Head, extending tomorrow afternoon to Irish coasts from Dungarvan to Slyne Head to Carlingford Lough.
Gale Warning
Nil
Meteorological Situation at 15:00 UTC
High pressure of 1033hPa centred to the north of the Azores, extends a ridge northeast between Ireland and Iceland. The ridge will continue to move eastwards over Ireland this evening and tonight.
Small Craft Warning: In effect
Heavy Swell (>4m) : Nil
Forecast for Irish coastal waters from Fair Head to Wicklow Head to Mizen Head and for the Irish Sea
Wind: Decreasing northerly force 4 or 5 imminent. Soon decreasing northerly or variable force 2 to 4. Later backing south to southwest and increasing force 4 to 6.
Weather: Fair with scattered showers, mainly on the Irish Sea, some heavy, with a slight chance of hail and sleet. Later becoming mostly cloudy.
Visibility: Mostly good but decreasing moderate to poor in showers.
Forecast for Irish coastal waters from Mizen Head to Erris Head to Fair Head
Wind: Decreasing becoming variable force 2 to 4 imminent. Soon increasing south to southwest force 4 or 5. Later increasing southerly force 6 or 7 and gusty.
Weather: Fair with isolated showers. Later becoming cloudy with rain and drizzle, some of it heavy.
Visibility: Mostly good, moderate in any showers. Later decreasing moderate to poor in rain and drizzle.
Outlook for a further 24 hours until 18:00, Saturday 22 November 2025
Fresh to near gale force and gusty southerly winds, followed by moderate to fresh west to northwest winds on Friday night. Winds backing southwest to west on Saturday morning. On Saturday afternoon, winds will further back southerly in the southwest and south and increase strong and gusty, before veering southwest to west. Weather: Rain spreading eastwards on Friday evening and Friday night, followed by scattered showers. Further rain in the south and west later.
Forecast issued at: 18:00, Thursday 20 November 2025
All times are local unless specified
