Sea Area Forecast
Forecast valid from: 12:00, Thursday 13 August 2026 until 12:00, Friday 14 August 2026
Small Craft Warning
Nil.
Gale Warning
Nil.
Meteorological Situation at 09:00 UTC
Ireland lies in a mostly light to moderate south or southwest airflow, with an anticyclone of 1031hPa, centred over northern Poland, and a depression of 1002hPa, centred over Iceland. Associated frontal troughs lie over and to the west of Ireland.
Heavy Swell (>4m) : No
Forecast for Mizen Head to Slyne Head to Malin Head
Wind: Southwesterly force 3 or 4, occasionally force 5. Soon veering west to northwest. Becoming northwesterly later and becoming mainly force 4, occasionally force 5 by the end of the period.
Weather: Mostly cloudy with showery outbreaks of rain, some heavy, with the chance of isolated thunderstorms. Occasional mist and fog. 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: Southerly or variable force 2 to 4. Later increasing northwesterly force 4 or 5.
Weather: Cloudy to fair with showers or showery outbreaks of rain, mainly in the north with the chance of isolated thunderstorms. Cloud and rain spreading eastwards later along with occasional mist and fog.
Visibility: Moderate to poor in precipitation, mist and fog. Otherwise good.
Forecast for Howth Head to Hook Head to Mizen Head and for the South Irish Sea
Wind: Increasing southwesterly force 3 to 5 imminent. Soon decreasing force 3 or 4. Later increasing northwesterly force 3 to 5.
Weather: Cloudy to fair with well scattered showers. Occasional mist and fog. Soon showery rain in the southwest, spreading eastwards later with isolated showers following.
Visibility: Moderate to poor in precipitation, mist and fog. Otherwise good.
Outlook for a further 24 hours until 12:00, Saturday 15 August 2026
Mostly moderate to fresh northwesterly winds, decreasing light to moderate for a time on Friday in the east and south. Decreasing mostly light to moderate, occasionally fresh, north or northwest or variable Saturday morning. Weather: Cloudy to fair with well scattered light showers.
Forecast issued at: 12:00, Thursday 13 August 2026
All times are local unless specified
