Réamhaisnéis limistear na farraige
Forecast valid from: 06:00, Monday 21 September 2026 until 06:00, Tuesday 22 September 2026
Small Craft Warning
South to southwest winds will occasionally reach force 6 today (Monday) and tonight on coasts from Slyne Head to Erris Head to Malin Head.
Gale Warning
Nil
Meteorological Situation at 03:00 UTC
An anticyclone of 1033 hPa centred over the northwest of France maintains a moderate to fresh southwesterly airflow over Ireland. A warm front moves eastwards over the country.
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, soon decreasing force 3 or less, later increasing force 3 or 4.
Weather: Patchy rain, drizzle, mist and fog at first, especially in the northeast, becoming cloudy or fair today.
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 2 or 3, later backing southerly.
Weather: Patchy rain, drizzle, mist and fog at first, becoming cloudy or fair today.
Visibility: Moderate or poor in rain, drizzle, mist or fog, otherwise moderate to good.
Outlook for a further 24 hours until 06:00, 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 and veering north to northwest, then increasing mostly moderate. Cloudy or fair with mist and fog patches. Rain developing in the northwest on Tuesday morning and extending slowly southeastwards.
Forecast issued at: 06:00, Monday 21 September 2026
All times are local unless specified
