Sea Area Forecast
Forecast valid from: 11:00, Thursday 17 September 2026 until 12:00, Friday 18 September 2026
Small Craft Warning
West to southwest winds will reach force 6 or higher at times on all Irish coasts throughout the period.
Gale Warning
Nil
Atlantic Swell
Heavy swell on Atlantic coasts
Meteorological Situation at 09:00 UTC
Ireland lies in a mostly fresh to near-gale force westerly airflow, with a depression of 977 hPa centred southeast of Iceland.
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Mizen Head to Erris Head to Fair Head
Wind: West to northwest force 5 to 7, strongest in the north. Later backing south to southwest and increasing force 6 or 7, and possibly touching gale force 8 at times.
Weather: Cloudy to fair with isolated showers, later becoming cloudy with patchy rain, drizzle and mist.
Visibility: Mostly good, later reducing moderate to poor in rain, drizzle and mist.
Forecast for Fair Head to Howth Head to Mizen Head and for the Irish Sea
Wind: Westerly force 5 or 6, soon decreasing force 4 or 5 south of Howth Head. Later backing south to southwest force 5 or 6.
Weather: Cloudy to fair with isolated showers, later becoming cloudy with drizzle and mist patches.
Visibility: Mostly good, later reducing moderate to poor in and drizzle and mist.
Outlook for a further 24 hours until 12:00, Saturday 19 September 2026
Fresh to near-gale force southwesterly winds will gradually decrease moderate to fresh in southern areas on Saturday morning. Weather: Cloudy with mist and outbreaks of rain, becoming cloudy to fair with scattered showers through Friday. Mist patches lingering in southern areas.
Forecast issued at: 11:00, Thursday 17 September 2026
All times are local unless specified
