Sea Area Forecast
Forecast valid from: 00:00, Friday 19 September 2025 until 00:00, Saturday 20 September 2025
Small Craft Warning
1. Southwest winds will continue to reach force 6 or higher overnight on Irish coasts from Slyne Head to Rossan Point to Malin Head becoming confined to Irish coasts from Rossan Point to Bloody Foreland to Malin Head on Friday morning. 2. Southwest winds will also continue to reach force 6 or higher overnight on Irish coasts form Belfast Lough to Wicklow Head to Roches Point, becoming confined to Irish coasts from Howth Head to Wicklow Head to Dungarvan on Friday morning.
Gale Warning
Nil
Meteorological Situation at 21:00 UTC
A depression of 992hPa centred around 200 nautical miles northwest of Erris Head generates a mostly moderate to strong south to southwest airflow over Ireland. Associated frontal troughs are slow-moving over the country.
Small Craft Warning: In effect
Heavy Swell (>4m) : Nil
Forecast for Irish coastal waters from Fair Head to Carnsore Point to Valentia and for the Irish Sea
Wind: South to southwest force 4 to 6 and gusty, occasionally force 7 on the Irish Sea. Soon decreasing mainly force 4 to 6, but locally decreasing variable force 3 or less at times west of Mizen Head and between Belfast Lough and Howth Head. Gradually decreasing variable force 2 to 4 later.
Weather: Cloudy with rain and drizzle, heavy at times. Mist and fog patches too.
Visibility: Reducing moderate or poor in precipitation, mist and fog.
Forecast for Irish coastal waters from Valentia to Erris Head to Fair Head
Wind: Southwest force 4 to 6 and gusty, occasionally touching force 7 at first. Later decreasing force 3 to 5.
Weather: Mainly fair.
Visibility: Mostly good.
Outlook for a further 24 hours until 00:00, Sunday 21 September 2025
Moderate southwest winds along western and northern coasts at first with light to moderate northeast or variable winds elsewhere. Winds increasing fresh to strong north to northeast in the southeast and northwest on Saturday morning and gradually increasing fresh to strong or near gale north to northeast on all coasts through the rest of the period. Weather; Rain and drizzle in southeast. Otherwise fair to cloudy with showers spreading from the northwest on Saturday morning, some heavy with isolated thunderstorms possible.
Forecast issued at: 00:00, Friday 19 September 2025
All times are local unless specified
