Sea Area Forecast
Forecast valid from: 16:00, Saturday 12 September 2026 until 18:00, Sunday 13 September 2026
Small Craft Warning
Nil
Gale Warning
Nil
Meteorological Situation at 15:00 UTC
A depression of 968hPa northeast of Iceland generates a moderate to fresh westerly airflow across the country. An associated frontal wave tracks to the south of Ireland.
Heavy Swell (>4m) : No
Forecast for Belfast Lough to Howth Head to Dungarvan and for the Irish Sea
Wind: West force 3 to 5, easing force 3 or 4 imminent. Soon easing westerly or variable force 3 or less. Becoming southerly force 3 or 4 by the end of the period.
Weather: Cloudy with isolated showers. Rain and drizzle further south with heavy and persistent falls at times. Mist patches too.
Visibility: Reducing moderate or poor in precipitation and mist.
Forecast for Dungarvan to Slyne Head to Belfast Lough
Wind: Southwest force 3 or 4. Soon becoming westerly or variable force 2 to 4. Later backing southerly or variable force 2 to 4.
Weather: Cloudy with rain and drizzle along the south, heavy and persistent at times. Isolated showers elsewhere. Mist and fog patches too.
Visibility: Reducing moderate or poor in precipitation, mist and fog.
Outlook for a further 24 hours until 18:00, Monday 14 September 2026
Moderate to fresh southwest winds will increase to fresh to strong along Atlantic coasts. Weather: Cloudy with showery spells of rain, heavy at times. Chance of isolated thunderstorms.
Forecast issued at: 16:00, Saturday 12 September 2026
All times are local unless specified
