Sea Area Forecast
Forecast valid from: 23:00, Wednesday 21 October 2026 until 06:00, Thursday 22 October 2026
Small Craft Warning
Northwesterly winds will reach force 6 or higher today (Wednesday) on all Irish coasts.
Gale Warning
Northwest winds will reach gale force for a time today (Wednesday) on Irish coastal waters from Rossan Point to Howth Head to Hook Head and the Irish Sea.
Atlantic Swell
On Atlantic coasts.
Meteorological Situation at 21:00 UTC
Ireland lies in a cyclonic variable airflow generated by a complex low pressure system centred west of Iceland, with a secondary depression of 994hPa centred to the northwest of Ireland. Associated active weather fronts will clear into the Irish Sea this morning. Showery troughs will follow from the west. Strom Austen will approach towards the southwest of Ireland later.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Carnsore Point to Valentia to Slyne Head
Wind: Northwest force 6 to near gale force 7 and gusty. Force 5 or 6 imminent. Soon backing westerly force 4 or 5. Later increasing force 5 or 6 and gusty.
Weather: Fair with some showers. Thundery rain this evening. Fair with some showers later.
Visibility: Moderate to good.
Forecast for Slyne Head to Erris Head to Rossan Point
Wind: Northwest force 6 to 7 and gusty. Soon decreasing force 5 or 6. Later becoming cyclonic variable mainly southwest force 3 to 5.
Weather: Rain, heavy and persistent. Fair imminent with showers, some thundery.
Visibility: Moderate to poor, improving moderate to good.
Forecast for Rossan Point to Howth Head to Carnsore Point and for the Irish Sea
Wind: Northwest force 7 to gale force 8 and gusty imminent. Soon decreasing force 6 or 7. Decreasing westerly force 3 or 4 later.
Weather: Rain, heavy and persistent. Fair soon with showers.
Visibility: Moderate to poor, improving mostly good.
Outlook for a further 24 hours until 00:00, Friday 23 October 2026
Moderate west to southwest winds, strong at times in southern areas. Winds will become cyclonic variable later with strong to gale force winds extending from the southwest. Fair spells and scattered showers with heavy rain moving up from the southwest later.
Forecast issued at: 23:00, Wednesday 21 October 2026
All times are local unless specified
