Sea Area Forecast
Forecast valid from: 00:00, Monday 21 September 2026 until 00:00, Tuesday 22 September 2026
Small Craft Warning
South to southwest winds will occasionally reach force 6 overnight and on Monday on coasts from Slyne Head to Erris Head to Malin Head.
Gale Warning
Nil
Meteorological Situation at 21:00 UTC
A moderate to fresh south to southwest airflow covers Ireland as a ridge of high pressure over the country moves eastwards and a warm front moves in from the southwest. The front will move eastwards over Ireland overnight.
Small Craft Warning: In effect
Heavy Swell (>4m) : No
Forecast for Mizen Head to Slyne Head to Malin Head
Wind: South to southwest force 4 or 5, occasionally reaching force 6 north of Slyne Head
Weather: Patchy rain drizzle, mist and fog
Visibility: Moderate or poor in rain, drizzle mist or fog, otherwise moderate to good.
Forecast for Malin Head to Howth Head to Carnsore Point and for the Irish Sea
Wind: South to southwest force 3 or 4, later decreasing force 3 or less.
Weather: Patchy rain, drizzle, mist and fog overnight and on Monday morning, becoming cloudy or fair in the afternoon.
Visibility: Moderate or poor in rain, drizzle, mist or fog, otherwise moderate to good.
Forecast for Carnsore Point to Roches Point to Mizen Head
Wind: West to southwest force 3 or 4, soon decreasing force 2 or 3, later becoming variable force 3 or less.
Weather: Patchy rain, drizzle, mist and fog overnight, becoming cloudy or fair on Monday.
Visibility: Moderate or poor in rain, drizzle, mist or fog, otherwise moderate to good.
Outlook for a further 24 hours until 00:00, Wednesday 23 September 2026
Light to moderate south to southwest winds on east and south coasts. Moderate to fresh south to southwest winds on west and north coasts, decreasing light to moderate variable on Tuesday afternoon. Cloudy or fair with mist and fog patches. Rain developing in the northwest on Tuesday morning and extending slowly southeastwards.
Forecast issued at: 00:00, Monday 21 September 2026
All times are local unless specified
