Réamhaisnéis limistear na farraige
Forecast valid from: 18:00, Sunday 14 September 2025 until 18:00, Monday 15 September 2025
Small Craft Warning
Southwesterly winds, veering westerly tonight (Sunday), will reach force 6 or higher, on all Irish coasts through the period.
Gale Warning
Westerly winds will reach gale force 8 tonight (Sunday) on Irish coastal waters from Wicklow Head to Roches Point to Erris Head, extending overnight to Irish coastal waters from Strangford Lough to Roches Point to Rossan Point and on the Irish Sea, and occasionally reaching strong gale force 9 in the west and southwest. Westerly gales 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 Monday.
Meteorological Situation at 15:00 UTC
A depression of 980hPa, centred approximately 250 nautical miles west of Erris Head, generates a strong to gale force southeast to southwest airflow over Ireland and will slowly track east-northeastwards through the period. An associated frontal trough continues to track northeastwards across Ireland, with another frontal trough approaching from the west.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Carnsore Point to Roche's Point to Erris Head
Wind: Increasing westerly mostly gale force 8 and gusty imminent, occasionally strong gale force 9, but force 6 or 7 in the northwest. Soon force 7 or gale force 8 and gusty. Later decreasing west to northwest force 6 or 7 and gusty.
Weather: Showers or longer spells of rain, heavy at times. Later becoming cloudy to fair with isolated showers.
Visibility: Moderate to poor in precipitation.
Forecast for Irish coastal waters from Erris Head to Malin Head to Belfast Lough
Wind: Decreasing south to southwesterly force 4 or 5 imminent, occasionally force 6. Soon westerly and increasing force 6 to gale force 8 south of Rossan Point. Later generally becoming west to northwest force 5 to 7 and gusty.
Weather: Showers or longer spells of rain, heavy at times with chance of isolated thunderstorms.
Visibility: Moderate to poor in precipitation.
Forecast for Irish coastal waters from Belfast Lough to Howth Head to Carnsore Point and for the Irish Sea
Wind: Increasing southwesterly force 6 to gale force 8 and occasionally gusty imminent. Soon westerly.
Weather: Showers or longer spells of rain, heavy at times. Later becoming cloudy to fair south of Howth Head with isolated showers.
Visibility: Moderate to poor in precipitation.
Outlook for a further 24 hours until 18:00, Tuesday 16 September 2025
Strong to gale force westerly winds, gradually easing mostly moderate to fresh by Tuesday afternoon. Backing southerly or southeasterly on Tuesday afternoon in the west and south and increasing strong to near gale force in the southwest. Weather: Showers or longer spells of rain for a time, mainly in the northwest, north and northeast, Otherwise generally cloudy to fair with well scattered showers. Rain following into the south and west through Tuesday, heavy at times in the southwest.
Forecast issued at: 18:00, Sunday 14 September 2025
All times are local unless specified
