Sea Area Forecast
Forecast valid from: 02:00, Thursday 13 August 2026 until 06:00, Friday 14 August 2026
Small Craft Warning
Nil.
Gale Warning
Nil.
Meteorological Situation at 03:00 UTC
Ireland lies in a light to moderate southerly airflow, with an anticyclone of 1031hPa centred over Poland and a depression of 997hPa centred over Iceland. Associated frontal troughs lie close to the west coast of Ireland.
Heavy Swell (>4m) : No
Forecast for Mizen Head to Slyne Head to Malin Head
Wind: Increasing southerly force 4, occasionally force 5 imminent. Veering west to northwesterly soon and later.
Weather: Mostly cloudy with showery outbreaks of rain, some heavy, with the chance of isolated thunderstorms. Occasional mist and fog. Becoming cloudy to fair later with isolated light showers.
Visibility: Moderate to poor in precipitation, mist and fog. Otherwise good.
Forecast for Malin Head to Belfast Lough to Howth Head and for the North Irish Sea
Wind: Variable or southerly force 2 to 4. Later veering mostly west to northwest mainly force 4, occasionally force 5, southwest to west force 3 or 4 in parts of the east.
Weather: Cloudy to fair with isolated showers. Scattered showers soon, especially further north, with the chance of isolated thunderstorms. Cloud and rain spreading eastwards later along with occasional mist and fog.
Visibility: Good. Decreasing moderate to poor in precipitation, mist and fog.
Forecast for Howth Head to Hook Head to Mizen Head and for the South Irish Sea
Wind: South to southwest force 2 to 4. Soon increasing force 4 or 5. Later veering mostly west to northwest force 4 or 5, southwest to west force 3 or 4 in the east.
Weather: Cloudy to fair with well scattered showers. Occasional mist and fog. Later showery rain spreading eastwards.
Visibility: Good. Decreasing moderate to poor in precipitation, mist and fog.
Outlook for a further 24 hours until 06:00, Saturday 15 August 2026
Wind: Mostly moderate, occasionally fresh west to northwesterly winds. Decreasing light to moderate northerly or variable for a time on Friday in the east and south, before becoming mostly moderate northerly in the east and south. Weather: Any lingering, cloud, rain, mist and fog in the east and on the Irish Sea will clear early Friday morning, otherwise cloudy to fair with well scattered light showers.
Forecast issued at: 02:00, Thursday 13 August 2026
All times are local unless specified
