Sea Area Forecast
Forecast valid from: 23:25, Thursday 27 August 2026 until 00:00, Saturday 29 August 2026
Small Craft Warning
Northwest winds will reach force 6 tomorrow (Friday) afternoon and evening on Irish coasts from Fair Head to Belfast Lough.
Gale Warning
Nil.
Meteorological Situation at 21:00 UTC
A depression of 1006hPa centred over the Irish Sea generates a light to moderate cyclonic airflow over Ireland. The associated occluded fronts move over the country.
Small Craft Warning: In effect
Heavy Swell (>4m) : No
Forecast for Bloody Foreland to Fair Head to Strangford Lough and for the North Irish Sea
Wind: North to northeast force 3 to 5. Cyclonic variable force 3 to 5 imminent. Soon west to northwest force 4 or 5. Later increasing force 4 to 6.
Weather: Cloudy with showers or rain, heavy at times with a chance of isolated thunderstorms. Soon cloudy to fair with isolated showers. Areas of mist and fog.
Visibility: Moderate or poor in precipitation, mist and fog.
Forecast for Strangford Lough to Howth Head to Carnsore Point and for the South Irish Sea
Wind: Cyclonic variable force 2 to 4, occasionally increasing force 5. Soon west to northwest force 3 or 4. Later mainly southwest force 3 to 5.
Weather: Cloudy with showers or rain, heavy at times with a chance of isolated thunderstorms. Soon cloudy to fair with isolated showers. Areas of mist and fog.
Visibility: Moderate or poor in precipitation, mist and fog.
Forecast for Carnsore Point to Dungarvan to Valentia
Wind: West to northwest force 3 to 5. Imminently decreasing force 3 or 4. Later backing southwest to west force 3 to 5.
Weather: Cloudy to fair with scattered showers, heavy at times with a chance of isolated thunderstorms. Areas of mist and fog. Rain in the southwest at the end of the period.
Visibility: Moderate or poor in precipitation, mist and fog.
Forecast for Valentia to Erris Head to Bloody Foreland
Wind: Cyclonic variable force 3 or 4.
Weather: Cloudy to fair with isolated showers, heavy at times with a chance of isolated thunderstorms. Areas of mist and fog. Rain in the southwest at the end of the period.
Visibility: Moderate or poor in precipitation, mist and fog.
Outlook for a further 24 hours until 00:00, Sunday 30 August 2026
Fresh to strong cyclonic winds developing in the south and east, increasing near gale force at times. Light to moderate variable winds in the west and north. Weather: Rain in the southwest extending across southern and eastern areas, turning heavy at times. Rain clearing from the east Saturday evening. Scattered showers elsewhere.
Forecast issued at: 23:25, Thursday 27 August 2026
All times are local unless specified
