Réamhaisnéis limistear na farraige
Forecast valid from: 06:00, Monday 15 September 2025 until 06:00, Tuesday 16 September 2025
Small Craft Warning
Westerly winds will reach force 6 or higher on all Irish coasts through the period.
Gale Warning
Westerly winds will reach gale force 8 today (Monday) on Irish coastal waters from Strangford Lough to Dungarvan to Rossan Point and on the Irish Sea, and will become mainly confined to Irish coastal waters from Strangford Lough to Howth Head to Carnsore Point and on the Irish Sea South of Isle of Man on Monday evening.
Atlantic Swell
Developing on western coasts at times on Monday.
Meteorological Situation at 03:00 UTC
A depression of 986hPa, centred over the north of Scotland, generates a strong to gale force westerly airflow over Ireland, with associated frontal troughs embedded in the flow.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Carnsore Point to Mizen Head to Rossan Point
Wind: West to northwest force 7 or gale force 8. Soon decreasing force 6 or 7. Later decreasing force 4 or 5, occasionally force 6.
Weather: Cloudy to fair with showers, heavy at times.
Visibility: Moderate or poor in precipitation.
Forecast for Irish coastal waters from Rossan Point to Malin Head to Belfast Lough
Wind: Westerly force 5 or 6. Soon increasing northwesterly force 6 or 7. Later decreasing force 5 or 6.
Weather: Cloudy to fair with showers or longer spells of rain, heavy at times with a chance of isolated thunderstorms.
Visibility: Moderate or poor in precipitation.
Forecast for Irish coastal waters from Belfast Lough to Howth Head to Carnsore Point and for the Irish Sea
Wind: Westerly force 7 or gale force 8. Decreasing force 6 or 7 by the end of the period.
Weather: Cloudy to fair with showers or longer spells of rain, heavy at times.
Visibility: Moderate or poor in precipitation.
Outlook for a further 24 hours until 06:00, Wednesday 17 September 2025
Fresh to strong, occasionally near gale force, west to northwest winds, easing moderate to fresh on Tuesday. Increasing strong to near gale force, occasionally gale force, southwesterly winds on Tuesday night. Weather: Cloudy to fair with isolated showers. Outbreaks of rain spreading from the southwest on Tuesday afternoon, clearing northeastwards on Wednesday morning.
Forecast issued at: 06:00, Monday 15 September 2025
All times are local unless specified
