Sea Area Forecast
Forecast valid from: 17:00, Thursday 13 August 2026 until 18:00, Friday 14 August 2026
Small Craft Warning
Nil.
Gale Warning
Nil.
Meteorological Situation at 15:00 UTC
Ireland lies in a mostly moderate southwest airflow, with an extensive anticyclone of 1031hPa, centred over northern Poland, and a depression of 1002hPa, centred over Iceland. Associated frontal troughs will feed down from the northwest throughout the period.
Heavy Swell (>4m) : No
Forecast for Mizen Head to Slyne Head to Rossan Point
Wind: Southwesterly force 4 or 5. Veering west to northwest imminently. Soon decreasing northwest force 3 or 4. Increasing force 4 or 5 by the end of the period.
Weather: Mostly cloudy with some showery rain imminent to soon. Some thunderstorms for northwest areas.
Visibility: Decreasing moderate in any showers or mist, otherwise mostly good
Forecast for Rossan Point to Malin Head to Strangford Lough
Wind: Variable force 3 or less. Soon increasing northwesterly force 3 to 5. Increasing force 4 or 5 by the end of the period.
Weather: Fair to cloudy with some showery rain imminent to soon. Some thunderstorms for northern areas.
Visibility: Decreasing moderate in any showers or mist, otherwise mostly good
Forecast for Strangford Lough to Howth Head to Carnsore Point and for the Irish Sea
Wind: Mostly variable force 3 or less. Reaching force 3 or 4 south and east of the Irish Sea for a time today. Increasing northwest force 4 or 5 by the end of the period.
Weather: Mostly fair. Cloudy for a time soon with some showery rain clearing southeastwards.
Visibility: Decreasing moderate in any showers, otherwise good.
Forecast for Carnsore Point to Roches Point to Mizen Head
Wind: Southwest force 3 to 5. Soon gradually veering northwest force 4 to 5.
Weather: Fair to cloudy with some showery rain soon, clearing southeastwards.
Visibility: Decreasing moderate in any showers, otherwise good.
Outlook for a further 24 hours until 18:00, 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: 17:00, Thursday 13 August 2026
All times are local unless specified
