Sea Area Forecast
Forecast valid from: 17:00, Saturday 29 August 2026 until 18:00, Sunday 30 August 2026
Small Craft Warning
1. Southwest winds will reach force 6 at times tonight on Irish coasts from Roche's Point to Mizen Head to Loop Head.
2. Southerly winds will reach force 6 at times during Sunday morning on Irish coasts from Howth Head to Carnsore Point to Roche's Point.
Gale Warning
nil
Meteorological Situation at 15:00 UTC
Ireland lies in a broad and complex area of low pressure with multiple centres, including one of 998hPa tracking into southern England. A temporary col will cover Ireland overnight, ahead of another low pressure which will push in over Ireland during Sunday. Active fronts will continue to affect the country.
Small Craft Warning: In effect
Heavy Swell (>4m) : No
Forecast for Roches Point to Valentia to Slyne Head
Wind: West to southwest mainly force 3 or 4; force 5 for a time further south. Soon becoming cyclonic variable, mainly southwesterly, force 5 or 6. Later veering westerly force 4 to 6.
Weather: Mostly fair. Cloudy with showers or longer spells of rain soon to later, some heavy and thundery.
Visibility: Decreasing moderate or poor at times.
Forecast for Slyne Head to Erris Head to Bloody Foreland
Wind: Westerly or variable force 3 or less. Soon, increasing south to southeast force 3 or 4. Later decreasing cyclonic variable force 3 or less.
Weather: Cloudy with patches of mist. Showers or longer spells of rain soon to later, some heavy and thundery.
Visibility: Decreasing moderate or poor at times.
Forecast for Bloody Foreland to Belfast Lough to Howth Head and for the Irish Sea North of Anglesey
Wind: Northerly or variable force 3 or less. Soon becoming westerly or variable force 2 to 4. Later increasing south to southeast force 3 to 4.
Weather: Scattered rain and patches of mist. Mostly fair soon. Later, cloudy with showers or longer spells of rain, some heavy and thundery.
Visibility: Decreasing moderate or poor at times.
Forecast for Howth Head to Carnsore Point to Roches Point and for the Irish Sea South of Anglesey
Wind: Northwest to west or variable mainly force 3 or 4. Later, increasing southerly force 5 or 6. Becoming westerly force 5 or 6 by the end of the period.
Weather: Scattered rain. Mostly fair soon. Later, cloudy with showers or longer spells of rain, some heavy and thundery.
Visibility: Decreasing moderate or poor at times.
Outlook for a further 24 hours until 18:00, Monday 31 August 2026
Low pressure will move away towards the North Sea as a transient ridge of high pressure moves in from the west. Fresh to strong northwest winds in Atlantic areas will extend to all sea areas during Sunday night, backing westerly on Monday. Some lingering heavy showers Sunday evening, before becoming mostly fair. Drizzle and mist for west and northwest areas later.
Forecast issued at: 17:00, Saturday 29 August 2026
All times are local unless specified
