Sea Area Forecast
Forecast valid from: 13:00, Sunday 29 March 2026 until 13:00, Monday 30 March 2026
Small Craft Warning
Southwest winds, veering westerly, will increase to force 6 or higher today on all Irish coasts, becoming confined to Irish coasts from Slyne Head to Rossan Point to Strangford Lough by Sunday night.
Gale Warning
1. Westerly winds will reach gale force 8 this afternoon and evening (Sunday) on coasts from Rossan Pt to Malin Head to Belfast Lough, touching strong gale force 9 at times between Bloody Foreland and Fair Head
2) Southwest winds will reach gale force 8 early this afternoon (Sunday) on the Irish Sea north of Anglesey.
Atlantic Swell
On Atlantic coasts from Sunday afternoon.
Meteorological Situation at 09:00 UTC
Depressions of 977 hPa over Iceland move eastwards and generate a strong to gale force southwesterly airflow over Ireland. An associated cold front over Ulster and Connacht moves south-eastwards.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Slyne Head to Rossan Point to Belfast Lough
Wind: Westerly force 7 or gale force 8, touching strong gale force 9 on the north coast for a time, soon decreasing west to northwest force 6 or 7 and gusty, later decreasing force 5 to 7 on Monday morning.
Weather: Rain clearing early this afternoon. Becoming fair apart from isolated showers.
Visibility: Moderate or poor, increasing good as rain clears, decreasing moderate or poor in any mist or drizzle on Monday morning.
Forecast for Belfast Lough to Carnsore Point to Mizen Head and for the Irish Sea
Wind: Southwesterly force 6 or 7 and reaching gale force 8 at first on the north Irish Sea, decreasing west to southwest force 5 to 7 imminent, soon veering westerly, later decreasing force 4 or 5 south of Howth Head.
Weather: Rain, clearing southastwards this afternoon and evening. cloudy in the south overnight and early Monday with mist and drizzle
Visibility: Moderate or poor, increasing good as rain clears, decreasing to moderate or poor in any mist and drizzle in the south on Monday morning.
Forecast for Mizen Head to Loop Head to Slyne Head
Wind: Southwesterly force 6 or 7, veering westerly and decreasing force 4 or 5 imminent, later decreasing west to northwest force 3 or 4,
Weather: Rain clearing early this afternoon. Becoming fair apart from isolated showers. Mist and drizzle developing overnight and Monday morning.
Visibility: Moderate or poor, increasing good as rain clears, decreasing moderate or poor in any mist or drizzle on Monday morning.
Outlook for a further 24 hours until 13:00, Tuesday 31 March 2026
Moderate to fresh west to southwest winds, backing southwesterly on Tuesday morning
Forecast issued at: 13:00, Sunday 29 March 2026
All times are local unless specified
