Sea Area Forecast
Forecast valid from: 12:00, Wednesday 19 August 2026 until 12:00, Thursday 20 August 2026
Small Craft Warning
1. West to northwest winds will reach force 6 at times today (Wednesday) on Irish coasts from Carnsore Point to Valentia to Bloody Foreland. 2.Northerly winds will reach force 6 at times on all Irish coasts tomorrow (Thursday).
Gale Warning
nil
Meteorological Situation at 09:00 UTC
Adepression of 998hPa centred approximately 240 nautical miles northwest of Bloody Foreland, generates a moderate to strong and unstable westerly airflow over Ireland. Showery troughs are embedded in the flow.
Small Craft Warning: In effect
Heavy Swell (>4m) : No
Forecast for Mizen Head to Slyne Head to Rossan Point
Wind: Imminent veering west to northwest force 4 to 6. Soon veering northwest to north force 5 or 6.
Weather: Scattered showers, some heavy and with a chance of isolated thunderstorms.
Visibility: Decreasing moderate or poor in showers, otherwise good.
Forecast for Rossan Point to Belfast Lough to Howth Head and for the North Irish Sea
Wind: Southwest to west force 3 to 5. Soon veering west to northwest but increasing northerly force 5 or 6 between Rossan Point and Malin Head. Later increasing northerly force 4 to 6.
Weather: Scattered showers, some heavy and with a chance of isolated thunderstorms.
Visibility: Decreasing moderate or poor in showers, otherwise good.
Forecast for Howth Head to Carnsore Point to Mizen Head and for the South Irish Sea
Wind: Southwest to west force 4 to 6. Soon veering westerly. Later veering northwesterly.
Weather: Cloudy to fair with scattered showers.
Visibility: Decreasing moderate or poor in showers, otherwise good.
Outlook for a further 24 hours until 12:00, Friday 21 August 2026
Moderate to strong and gusty northerly winds will ease moderate to fresh on Thursday night. Weather: Cloudy to fair with scattered showers, some heavy.
Forecast issued at: 12:00, Wednesday 19 August 2026
All times are local unless specified
