A northeasterly and very variable flow prevails over the South of the basin. Over the North, it is southwesterly, moderate and very variable.
For Berck sternes :
No gale warning.
For the night from Wednesday to Thursday NNE force 2 in the early part of the night becoming force 1. Gusts reaching 14 knots in the early part of the night.
Slight sea. Low, short swell from W. Excellent visibility becoming excellent in the middle of the night then good. Daytime of Thursday 17 september : The largely blue sky won.t last.
Cloud and long sunny periods. Risk of some spots of rain in the morning, possibility of showers in the afternoon. In the evening, cloud and long sunny periods.
Chance of light rain. NNE force 2 turning NNW force 3 in the middle of the day then N. Gusts reaching 12 knots in the evening. Slight sea becoming moderate in the middle of the day. Low, short swell from W. Good visibility becoming excellent in the middle of the day.