Sea Area Forecast
Forecast valid from: 00:00, Friday 25 September 2026 until 00:00, Saturday 26 September 2026
Small Craft Warning
1. Southwesterly winds will reach force 6 at times this morning (Friday) on Irish coasts from Slyne Head to Rossan Point to Fair Head.
2. Southwesterly winds will reach force 6 at times this afternoon and evening (Friday) on Irish coasts from Valentia to Erris Head to Belfast Lough.
Gale Warning
nil
Atlantic Swell
On southwestern, western and northwestern coasts until Friday evening
Meteorological Situation at 21:00 UTC
Ireland lies in a moderate to strong southwesterly airflow generated by a depression of 962hPa centred south of Iceland. An associated front tracks southeastwards over the country through the period.
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Valentia to Erris Head to Fair Head
Wind: West to southwest force 4 to 6, strongest in the northwest. Soon decreasing force 4 or 5. Later increasing southwesterly force 6 or near gale force 7.
Weather: Cloudy with rain, drizzle and mist. Becoming cloudy to fair with well-scattered showers imminent. Becoming cloudy with scattered showers towards the end of the period.
Visibility: Decreasing moderate or poor in precipitation or mist.
Forecast for Fair Head to Carnsore Point to Valentia and for the Irish Sea
Wind: Southwesterly force 4 or 5, occasionally force 6, strongest north of Howth Head. Decreasing westerly or variable force 3 to 5 imminent. Soon decreasing west to southwest force 3 or 4. Later increasing force 4 or 5, reaching force 6 between Fair Head and Belfast Lough.
Weather: Cloudy with outbreaks of rain, drizzle and mist. Soon becoming cloudy to fair with isolated showers possible.
Visibility: Decreasing moderate or poor in precipitation or mist.
Outlook for a further 24 hours until 00:00, Sunday 27 September 2026
Fresh to strong, occasionally near gale force, southwesterly winds in the west and north. Moderate to fresh, occasionally strong, southwesterly winds elsewhere. Weather: Cloudy to fair with scattered showers and with the chance of isolated thunderstorms in the northwest.
Forecast issued at: 00:00, Friday 25 September 2026
All times are local unless specified
