Sea Area Forecast
Forecast valid from: 18:00, Wednesday 19 August 2026 until 18:00, Thursday 20 August 2026
Small Craft Warning
1. West to northwest winds will reach force 6 at times this evening (Wednesday) on Irish coasts from Carnsore Point to Valentia to Erris Head.
2.Northerly winds will reach force 6 at times tonight (Wednesday) and tomorrow (Thursday) on Irish coasts from Mizen Head to Malin Head to Carnsore Point.
Gale Warning
Nil
Meteorological Situation at 15:00 UTC
A depression of 1000hPa centred approximately 50 nautical miles north of Malin Head, generates a moderate to strong and unstable southwest to northwest airflow over Ireland with showery troughs embedded in the flow. A more northerly airflow will develop as the depression fills and clears eastwards with an anticyclone building to the west.
Small Craft Warning: In effect
Heavy Swell (>4m) : No
Forecast for Carnsore Point to Mizen Head to Erris Head
Wind: Northwesterly force 5 or 6. Soon becoming northwest to north and increasing force 7 at times in the west. Later decreasing force 4 to 6, slackest in the southeast.
Weather: Scattered showers, some heavy. Chance of isolated thunderstorms in the southeast later.
Visibility: Moderate or poor in showers, otherwise good.
Forecast for Erris Head to Bloody Foreland to Fair Head
Wind: Increasing northerly force 4 to 6 imminent. Soon becoming force 5 or 6.
Weather: Scattered showers, some heavy and with isolated thunderstorms possible.
Visibility: Moderate or poor in showers, otherwise good.
Forecast for Fair Head to Howth Head to Carnsore Point and for the Irish Sea
Wind: West to northwest force 3 to 5 and gusty imminent. Soon increasing northwest to northeast force 4 to 6. Later becoming north force 4 to 6.
Weather: Scattered showers, some heavy with thunderstorms.
Visibility: Moderate or poor in showers, otherwise good.
Outlook for a further 24 hours until 18:00, Friday 21 August 2026
Moderate to strong and gusty northerly winds at first, easing mostly moderate to fresh Thursday night. Weather: Scattered showers, some heavy.
Forecast issued at: 18:00, Wednesday 19 August 2026
All times are local unless specified
