Sea Area Forecast
Forecast valid from: 00:00, Monday 04 August 2025 until 00:00, Tuesday 05 August 2025
Small Craft Warning
1) South to southwest winds will reach force 6 or higher tonight (Sunday night) and tomorrow morning (Monday) on Irish coasts from Belfast Lough to Carnsore Point to Valentia, veering westerly later on Monday morning. 2) Westerly winds will reach force 6 or higher at times on all Irish coasts on Monday afternoon, evening and night.
Gale Warning
1. Southwesterly winds, veering westerly will reach gale force 8 or strong gale force 9 tonight (Sunday night) and for a time tomorrow (Monday) on Irish coastal waters from Valentia to Rossan Point to Belfast Lough and on the north Irish Sea, becoming confined to Irish coastal waters from Bloody Foreland to Malin Head to Belfast Lough for Monday afternoon. 2. Westerly winds may reach storm force 10 for a time Monday morning on Irish coastal waters from Bloody Foreland to Malin Head to Fair Head.
Meteorological Situation at 21:00 UTC
Ireland lies in a strengthening southerly airflow, generated by storm Floris of 1001hPa, centred approximately 250 nautical miles to the west of Erris Head. Storm Floris will rapidly deepen overnight and track to the north of Ireland. Its associated warm front is tracking eastwards across the country with the cold front to follow.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : Nil
Forecast for Irish coastal waters from Valentia to Slyne Head to Rossan Point
Wind: Increasing southwesterly force 7 or gale force 8 imminent. Soon decreasing westerly force 6 or 7. Later west to northwest force 5 to 7.
Weather: Cloudy with rain and drizzle, turning heavy at times. Isolated thunder possible. Mist and fog patches. Soon cloudy to fair with scattered showers, mainly for the west and north, some heavy later.
Visibility: Moderate to poor in precipitation, mist and fog. Otherwise, good.
Forecast for Irish coastal waters from Rossan Point to Belfast Lough to Howth Head and for the north Irish Sea
Wind: Increasing southerly force 6 to gale force 8 imminent, strongest in the northwest. Soon veering westerly and increasing strong gale force 9, possibly touching storm force 10, in the north. Later decreasing west to northwest force 5 to 7.
Weather: Cloudy with rain and drizzle, turning heavy at times. Isolated thunder possible. Mist and fog patches. Soon cloudy to fair with scattered showers, mainly for the west and north, some heavy later.
Visibility: Moderate to poor in precipitation, mist and fog. Otherwise, good.
Forecast for Irish coastal waters from Howth Head to Roches Point to Valentia and for the south Irish Sea
Wind: Increasing south to southwest force 6 or 7 imminent. Soon veering westerly and decreasing mostly force 5 or 6, occasionally force 7.
Weather: Cloudy with rain and drizzle, turning heavy at times. Isolated thunder possible. Mist and fog patches. Soon cloudy to fair with scattered showers, mainly for the west and north, some heavy later.
Visibility: Moderate to poor in precipitation, mist and fog. Otherwise, good.
Outlook for a further 24 hours until 00:00, Wednesday 06 August 2025
Wind: Fresh to near gale force west to northwest winds, strongest in the north, gradually decreasing mostly moderate or fresh westerly, still strong in the north. Weather: Cloudy to fair with scattered showers, most frequent in the north and west, some heavy. Showers becoming isolated later.
Forecast issued at: 00:00, Monday 04 August 2025
All times are local unless specified
