Sea Area Forecast
Forecast valid from: 06:00, Thursday 21 May 2026 until 06:00, Friday 22 May 2026
Small Craft Warning
Southerly winds will reach force 6 at times during Thursday on Irish coasts from Belfast Lough to Roche's Point to Rossan Point.
Gale Warning
nil
Meteorological Situation at 03:00 UTC
A large and complex depression in the nearby Atlantic steers up its associated fronts with warm sector conditions moving in, on a moderate to strong southwest flow.
Small Craft Warning: In effect
Heavy Swell (>4m) : No
Forecast for Belfast Lough to Carnsore Point to Erris Head and for the Irish Sea
Wind: South to southeast force 5 or 6.
Weather: Cloudy with patchy rain and drizzle. Mist and fog at times also. Fair spells developing too. Some fog banks later.
Visibility: Moderate or poor in any precipitation, mist or fog.
Forecast for Erris Head to Malin Head to Belfast Lough
Wind: Southerly mainly force 4 or 5.
Weather: Cloudy with mist and drizzle, heavy at times. Some mist and fog too. Some fair spells later.
Visibility: Moderate or poor in any precipitation, mist or fog.
Outlook for a further 24 hours until 06:00, Saturday 23 May 2026
Ireland will lie between low pressure to the west and high pressure to the east. Embedded weather fronts will feed up on a moderate to fresh southwest airflow, after which high pressure will move in. Cloudy with patchy outbreaks of rain and drizzle. Possible fog banks for southern and eastern areas. South to southwest winds will be moderate to fresh.
Forecast issued at: 06:00, Thursday 21 May 2026
All times are local unless specified
