Sea Area Forecast
Forecast valid from: 18:00, Tuesday 16 September 2025 until 18:00, Wednesday 17 September 2025
Small Craft Warning
Southeasterly winds, veering southwesterly, will reach force 6 or higher from Tuesday evening on all Irish coasts.
Gale Warning
1. Southeasterly winds veering southwesterly will reach gale force 8 at times tonight (Tuesday night) and for a time on Wednesday morning, on Irish coastal waters from Mizen Head to Malin Head to Carnsore Point and on the Irish Sea South of Anglesey. 2. South to southwest winds will reach gale force 8 at times tomorrow afternoon (Wednesday) on Irish coastal waters from Slyne Head to Rossan Point to Malin Head.
Meteorological Situation at 15:00 UTC
Ireland lies in a moderate westerly air-flow. A strong to gale force southeasterly air-flow will become established over Ireland tonight as a deepening Low Pressure system tracks off the northwest coast.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : Nil
Forecast for Irish coastal waters from Carlingford Lough to Carnsore Point to Mizen Head and for the Irish Sea south of the Isle of Man
Wind: Southwest force 3 to 5. Increasing southeast force 6 to gale force 8 imminent. Soon becoming south to southwest force 6 to gale force 8. Decreasing southwest force 5 or 6 later.
Weather: Rain, drizzle and mist imminent. Local fog. Becoming mostly dry with variable cloud later.
Visibility: Becoming moderate to poor imminent. Later becoming mostly good.
Forecast for Irish coastal waters from Mizen Head to Slyne Head to Malin Head
Wind: Increasing southeast force 6 to gale force 8 imminent, soon veering southwest. Later becoming south to southwest force 6 or 7 and reaching gale force 8 at times between Slyne Head and Malin Head.
Weather: Rain, drizzle and mist imminent. Local fog. Becoming mostly dry with variable cloud later.
Visibility: Becoming moderate to poor imminent. Later becoming mostly good.
Forecast for Irish coastal waters from Malin Head to Fair Head to Carlingford Lough and for the Irish Sea north of the Isle of Man
Wind: Westerly force 3 or 4. Increasing south to southeast force 4 or 5 imminent. Soon increasing southeast force 6 to gale force 8. Later decreasing south to southwest force 5 or 6.
Weather: Rain, drizzle and mist imminent. Local fog. Becoming mostly dry with variable cloud later.
Visibility: Becoming moderate to poor imminent. Later becoming mostly good.
Outlook for a further 24 hours until 18:00, Thursday 18 September 2025
Strong to near gale force southwesterly winds will gradually ease mostly moderate to strong on Wednesday night, before increasing near gale force again in the south and east. Weather: Mostly cloudy to fair with isolated showers at first. Showery outbreaks of rain will move up from the south Wednesday night, along with occasional mist and fog.
Forecast issued at: 18:00, Tuesday 16 September 2025
All times are local unless specified
