Sea Area Forecast
Forecast valid from: 18:00, Tuesday 18 August 2026 until 18:00, Wednesday 19 August 2026
Small Craft Warning
1. Westerly winds will reach force 6 at times this evening (Tuesday), tonight and tomorrow morning (Wednesday) on Irish coasts from Roche's Point to Slyne Head to Malin Head.
2. West to northwest winds will reach force 6 at times tomorrow afternoon (Wednesday) on Irish coasts from Carnsore Point to Mizen Head to Erris Head.
Gale Warning
Nil
Meteorological Situation at 15:00 UTC
A depression of 999hPa, centred approximately 280 nautical miles northwest of Malin Head generates a mostly moderate to fresh westerly airflow over Ireland.
Small Craft Warning: In effect
Heavy Swell (>4m) : No
Forecast for Roches Point to Slyne Head to Malin Head
Wind: Increasing westerly force 5, occasionally force 6 imminent. Soon force 5 or 6. Later decreasing northwesterly force 4 to 6, slackest in the northwest.
Weather: Outbreaks of rain and drizzle. Mist patches. Showers imminent, some heavy soon with isolated thunderstorms possible, mainly in the north.
Visibility: Decreasing moderate or poor in precipitation and mist.
Forecast for Malin Head to Strangford Lough to Howth Head and for the North Irish Sea
Wind: West or southwest force 4 or 5, occasionally force 6. Later decreasing westerly or variable force 3 to 5, slackest in the northeast.
Weather: Outbreaks of rain and drizzle imminent. Mist patches. Showers soon, some heavy later with isolated thunderstorms possible, mainly in the north and east.
Visibility: Decreasing moderate or poor in precipitation and mist.
Forecast for Howth Head to Carnsore Point to Roches Point and for the South Irish Sea
Wind: Westerly or variable force 3 to 5. Soon increasing force 4 or 5. Later increasing west or southwest force 4 to 6.
Weather: Outbreaks of rain and drizzle imminent. Mist patches. Showers soon.
Visibility: Decreasing moderate or poor in precipitation and mist.
Outlook for a further 24 hours until 18:00, Thursday 20 August 2026
Moderate to strong mostly westerly winds, veering northerly Wednesday evening and night. Weather: Cloudy to fair with showers, some heavy with the chance of isolated thunderstorms.
Forecast issued at: 18:00, Tuesday 18 August 2026
All times are local unless specified
