Channel Islands shipping forecast

For the area bounded by latitude 50°N, the French coast between Cap de la Hague and Ile de Brehat and longitude 3°W.

Issued by Jersey Met at 09:00UTC Thursday , 18 September 2025 for the period ending 12:00UTC Saturday.

General Situation

At 06:00UTC low, 985mb, just north of Hebrides, expected to move eastwards and lose its identity by Friday. Low 998mb, mid-Atlantic, expected 992mb, 300 miles northwest of Ireland by the same time. New low expected 1009mb, 250 miles west of Brest by Saturday.

Forecast from 12:00UTC Thursday to 12:00UTC Friday.

Wind: South to southwest 3 to 4 by midday, perhaps locally 5 mid-Channel at first, becoming variable 1 to 3 by dusk, then south to southwest 2 to 4 after midnight, veering southwest to west later.

Sea state: Smooth or slight with a low swell, perhaps occasionally moderate mid-Channel at first.

Weather: Risk of drizzle and mist patches, mainly in the north of the area, especially at first.

Visibility: Good, perhaps locally moderate or poor.

Outlook from 12:00UTC Friday to 12:00UTC Saturday.

Wind: West, soon becoming variable 1 to 3, then south to southwest 2 to 4 by dawn, increasing 5 to 7 later.

Sea state: Smooth or slight with a low swell, increasing moderate to rather rough later.

Weather: Showers developing from evening, perhaps thundery.

Visibility: Good, occasionally moderate later.