Sea Area Forecast
Forecast valid from: 00:00, Wednesday 17 September 2025 until 00:00, Thursday 18 September 2025
Small Craft Warning
Southeasterly winds, veering southwesterly, will reach force 6 or higher on all Irish coasts.
Gale Warning
Southeasterly winds veering southwesterly will reach gale force 8 at times tonight and for a time on Wednesday morning, on all Irish coastal waters and on the Irish Sea. Southwest winds will continue to reach gale force 8 at times on Wednesday on Irish coastal waters from Slyne Head to Rossan Point to Malin Head.
Meteorological Situation at 21:00 UTC
A strong to gale force southeasterly airflow over Ireland, will veer southwest and moderate, as a deep low Pressure system to the northwest of Ireland, tracks away northeastwards towards the north of Scotland.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : Nil
Forecast for Irish coastal waters from Howth Head to Roches Point to Loop Head and for the south Irish Sea
Wind: South to southwest force 6 to gale force 8 imminent. Soon decreasing southwest force 5 or 6, and further decreasing south to southwest force 3 to 5 later.
Weather: Rain, mist and fog, becoming confined to the south soon. Cloudy to fair later.
Visibility: Moderate to poor in rain, mist and fog.
Forecast for Irish coastal waters from Loop Head to Erris Head to Malin Head
Wind: Southeast force 6 to gale force 8, veering southwest imminent and soon.
Weather: Rain, mist and fog. Cloudy to fair with isolated showers soon.
Visibility: Moderate to poor in rain, mist and fog. Becoming mostly good soon.
Forecast for Irish coastal waters from Malin Head to Fair Head to Howth Head and for the north Irish Sea
Wind: Increasing southeast force 6 or 7, occasionally gale force 8, imminent. Veering southwest force 5 or 6 soon.
Weather: Rain, mist and fog. Cloudy to fair with isolated showers soon.
Visibility: Moderate to poor in rain, mist and fog. Becoming mostly good soon.
Outlook for a further 24 hours until 00:00, Friday 19 September 2025
Moderate to strong south to southwest winds, reaching near gale force at times. Cloudy to fair with isolated showers at first. Showery outbreaks of rain moving up from the south, along with mist and fog patches.
Forecast issued at: 00:00, Wednesday 17 September 2025
All times are local unless specified
