Réamhaisnéis limistear na farraige
Forecast valid from: 12:00, Thursday 24 September 2026 until 12:00, Friday 25 September 2026
Small Craft Warning
1. Southerly winds will reach force 6 or higher at times today (Thursday) on Irish coasts from Valentia to Bloody Foreland to Wicklow Head.
2. Southwesterly winds will reach force 6 at times tonight (Thursday) and tomorrow morning (Friday) on Irish coasts from Slyne Head to Rossan Point to Fair Head.
Gale Warning
Nil
Atlantic Swell
Developing on Atlantic coasts Thursday evening.
Meteorological Situation at 09:00 UTC
Ireland lies in a moderate to strong southerly airflow between an anticyclone of 1026hPa centred over the southeastern UK and a depression of 958hPa centred southwest of Iceland. An associated warm front lies over the country with a cold front following from the west.
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Valentia to Rossan Point to Belfast Lough
Wind: Southerly mainly force 5 or 6, reaching force 7 at times in the north and west at first. Soon decreasing southwesterly force 4 to 6.
Weather: Cloudy with rain and drizzle. Mist patches. Cloudy to fair later with well scattered showers.
Visibility: Moderate or poor in precipitation and mist, otherwise good.
Forecast for Belfast Lough to Carnsore Point to Valentia and for the Irish Sea
Wind: Increasing southerly force 4 to 6 imminent. Soon veering southwest to west force 4 to 6, strongest in the east. Later becoming northwesterly force 4 or 5 before decreasing southwesterly force 3 or 4.
Weather: Mostly cloudy with isolated showers. Cloudy soon with rain and drizzle. Mist patches. Cloudy to fair later with isolated showers.
Visibility: Moderate or poor in precipitation and mist, otherwise good.
Outlook for a further 24 hours until 12:00, Saturday 26 September 2026
Mostly moderate to strong southwesterly winds, increasing fresh to near gale force through Friday afternoon and evening. Decreasing moderate to strong Friday night. Weather: Cloudy to fair with scattered showers with the chance of isolated thunderstorms in the northwest later Friday.
Forecast issued at: 12:00, Thursday 24 September 2026
All times are local unless specified
