For the night from Sunday to Monday WNW wind force 3 continuing all night. Gusts reaching 17 knots until the middle of the night.
Slight sea. Low from N. Excellent visibility. Daytime of Monday 24 august : The atmosphere will remain unstable.
Good clear periods alternating with cloudy spells, sometimes dense.Light showers all day.In the evening, cloudy spells, sometimes dense. Possibility of showers WNW wind force 3 continuing all day. Gusts reaching 15 knots in the morning. Slight sea. Low from N. Excellent visibility.
semaphore stations
Station Boulogne-Sem located 12 km from Hardelot-Plage