Sea Area Forecast
Forecast valid from: 05:30, Tuesday 18 August 2026 until 06:00, Wednesday 19 August 2026
Small Craft Warning
West to southwest winds will reach force 6 at times today on Irish coasts from Erris Head to Rossan Point to Malin Head, extending to coasts from Mizen Head to Slyne Head to Malin Head tonight.
Gale Warning
Nil
Meteorological Situation at 21:00 UTC
Ireland lies in a moderate to fresh west to southwest airflow between a depression of 998hPa centred south of Iceland and an anticyclone of 1027hPa centred over the Azores.
Small Craft Warning: In effect
Heavy Swell (>4m) : No
Forecast for Carnsore Point to Slyne Head to Howth Head and for the Irish Sea North of Anglesey
Wind: Westerly force 4 to 6.
Weather: Mainly cloudy with scattered showers, more persistent rain and drizzle later with mist patches. Showers by the end of the period, some heavy.
Visibility: Good, decreasing moderate or poor in precipitation and mist.
Forecast for Howth Head to Wicklow Head to Carnsore Point and for the Irish Sea South of Anglesey
Wind: Westerly force 3 or 4 imminent, later increasing force 4 or 5.
Weather: Cloudy to fair with isolated showers. Later becoming cloudy with patches of rain, drizzle and mist. Isolated showers by the end of the period.
Visibility: Good, decreasing moderate or poor in precipitation and mist.
Outlook for a further 24 hours until 00:00, Thursday 20 August 2026
Moderate to strong westerly winds, becoming northerly on Wednesday evening. Weather: Cloudy to fair with showers, some heavy with the chance of isolated thunderstorms.
Forecast issued at: 05:30, Tuesday 18 August 2026
All times are local unless specified
