Sea Area Forecast
Forecast valid from: 13:00, Thursday 23 July 2026 until 12:00, Friday 24 July 2026
Small Craft Warning
nil
Gale Warning
nil
Meteorological Situation at 09:00 UTC
An anticyclone of 1035hPa centred over the mid-Atlantic extends a ridge of high pressure over Ireland together with a light to fresh northerly airflow.
Heavy Swell (>4m) : No
Forecast for Slyne Head to Malin Head to Fair Head
Wind: Imminent increasing west to northwest force 3 or 4. Soon backing southwest to west. Later increasing force 4 or 5.
Weather: Mostly cloudy with isolated light rain or drizzle possible.
Visibility: Generally good but reducing in any precipitation.
Forecast for Fair Head to Belfast Lough to Howth Head and for the North Irish Sea
Wind: Mostly north to northwest force 3 to 5, but decreasing variable force 3 or less at times south of Strangford Lough. Later backing west to southwest force 3 or 4.
Weather: Cloudy to fair.
Visibility: Good.
Forecast for Howth Head to Carnsore Point to Mizen Head and for the South Irish Sea
Wind: Imminent decreasing northeasterly or variable force 2 to 4. Later backing northerly or variable. Decreasing variable force 3 or less by the end of the period.
Weather: Cloudy to fair. Some mist patches possible overnight.
Visibility: Generally good, reducing in any mist patches.
Forecast for Mizen Head to Loop Head to Slyne Head
Wind: Imminent increasing northerly force 3 or 4. Soon increasing force 3 to 5. Later backing west to northwest force 3 or 4.
Weather: Cloudy to fair. Some mist patches possible overnight.
Visibility: Generally good, reducing in any mist patches.
Outlook for a further 24 hours until 12:00, Saturday 25 July 2026
Westerly winds will increase mostly moderate to fresh through Friday and further increase fresh to strong on Atlantic coasts on Friday night and into Saturday morning. Weather: Cloudy to fair but with cloud building from the northwest from Friday, followed by outbreaks of rain and drizzle from early Saturday.
Forecast issued at: 13:00, Thursday 23 July 2026
All times are local unless specified
