Réamhaisnéis limistear na farraige
Forecast valid from: 18:00, Wednesday 17 September 2025 until 18:00, Thursday 18 September 2025
Small Craft Warning
South to southwest winds will reach force 6 or higher at times this evening and tonight (Wednesday night) and tomorrow (Thursday) on all Irish coasts.
Gale Warning
Southwest winds will continue to reach gale force 8 at times this evening (Wednesday) and tonight on Irish coastal waters from Erris Head to Bloody Foreland to Fair Head.
Atlantic Swell
for a time on western and northern coasts
Meteorological Situation at 15:00 UTC
Low Pressure of 978hPa centred approximately 250 nautical miles northwest of Malin Head extends a fresh to strong southwesterly air-flow over Ireland. A frontal trough will approach the south coast later tonight.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Irish coastal waters from Fair Head to Howth Head to Hook Head and for the Irish Sea
Wind: Southwest force 5 or 6. Later increasing south to southwest force 6 or 7.
Weather: Fair or cloudy. Isolated light showers. Rain, drizzle and mist developing later.
Visibility: Mostly good. Decreasing moderate or poor later in rain, drizzle or mist.
Forecast for Irish coastal waters from Hook Head to Valentia to Erris Head
Wind: Southwest force 5 or 6. Decreasing southwest force 3 or 4 imminent between Hook Head and Slyne Head. Soon increasing south to southwest force 5 or 6. Later increasing south to southwest force 6 or 7.
Weather: Mostly cloudy with isolated light showers. Rain, drizzle and mist developing soon.
Visibility: Mostly good. Decreasing moderate or poor soon in rain, drizzle or mist.
Forecast for Irish coastal waters from Erris Head to Bloody Foreland to Fair Head
Wind: Southwest force 6 to gale force 8. Soon decreasing southwest force 5 to 7. Later decreasing south to southeast force 3 to 5.
Weather: Mostly cloudy with isolated light showers. Rain, drizzle and mist developing later.
Visibility: Mostly good. Decreasing moderate or poor later in rain, drizzle or mist.
Outlook for a further 24 hours until 18:00, Friday 19 September 2025
Fresh to strong or near gale force southwesterly winds developing on Thursday afternoon, except in the far northeast. Strong southwesterly winds becoming confined to eastern and southern coasts on Thursday night with winds decreasing mainly moderate to fresh elsewhere. Weather: Outbreaks of rain and drizzle becoming confined to the south and east by Friday morning with cloudy to fair conditions developing elsewhere.
Forecast issued at: 18:00, Wednesday 17 September 2025
All times are local unless specified
