Sea Area Forecast
Forecast valid from: 23:00, Thursday 04 June 2026 until 00:00, Saturday 06 June 2026
Small Craft Warning
1) Westerly winds will reach force 6 for a time tonight on Irish coasts from Rossan Point to Malin Head to Belfast Lough
2) Southerly winds backing southeasterly or easterly will reach force 6 or higher from Friday afternoon on Irish coasts from Strangford Lough to Roches Point to Slyne Head.
Gale Warning
Southeasterly winds will reach gale force 8 at times on Friday evening and Friday night on Irish coastal waters from Carnsore Point to Roches Point to Loop Head.
Atlantic Swell
On Atlantic coasts for a time Thursday night.
Meteorological Situation at 21:00 UTC
Ireland lies in a fresh to strong westerly airflow generated by low pressure of 985hPa, centred to the north of Scotland. A weak transient ridge moves in from the west overnight, ahead of a developing low, which will move towards the southwest on Friday.
Gale Warning: In effect
Small Craft Warning: In effect
Heavy Swell (>4m) : yes
Forecast for Belfast Lough to Howth Head to Carnsore Point and for the Irish Sea
Wind: Decreasing west to southwest force 4 or 5 imminent. Soon southerly. Later increasing force 5 or 6 and backing southeasterly.
Weather: Cloudy to fair with isolated showers. Later cloudy with outbreaks of rain and drizzle.
Visibility: Mostly good, moderate in showers. Decreasing moderate to poor later.
Forecast for Carnsore Point to Mizen Head to Slyne Head
Wind: Decreasing west to southwest force 4 or 5 imminent. Soon southerly. Later backing east or southeasterly and increasing force 6 or 7, reaching gale force 8 in the southwest and south.
Weather: Cloudy to fair with scattered showers. Later cloudy with rain, heavy at times. Mist and fog too.
Visibility: Mostly good for a time, moderate in showers. Decreasing moderate to poor later.
Forecast for Slyne Head to Malin Head to Belfast Lough
Wind: Decreasing west to southwest force 4 or 5 imminent. Soon southerly force 3 to 5. Later southeasterly or variable.
Weather: Cloudy to fair with scattered showers. Later rain in the west.
Visibility: Good. Decreasing moderate in precipitation.
Outlook for a further 24 hours until 00:00, Sunday 07 June 2026
Wind: Moderate to near gale force cyclonic variable winds, reaching gale force at times in the southwest and south. Decreasing mostly light to moderate by Saturday afternoon, still fresh to strong in the south. Becoming mostly westerly through Saturday afternoon and later south to southwesterly, increasing strong to near gale force in the southwest, west and northwest, elsewhere becoming moderate to fresh. Weather: Rain, heavy at times, clearing eastwards on Saturday afternoon, with cloudy to fair weather following. Further rain moving in to the southwest, west and northwest from Saturday evening.
Forecast issued at: 23:00, Thursday 04 June 2026
All times are local unless specified
