A northwesterly, moderate and very variable flow prevails over the whole area.
For Berck sternes :
No gale warning.
The reliability of the situation is poor.
For the night from Tuesday to Wednesday NW force 4 in the early part of the night weakening N force 2. Gusts reaching 24 knots in the middle of the night.
Slight sea. Low, short swell from W. Excellent visibility. Daytime of Wednesday 16 september : The largely blue sky won.t last.
Cloud and long sunny periods. Risk of showers in the morning, possibility of showers in late afternoon. In the evening, cloud and long sunny periods.
Possibility of showers NW force 4 becoming force 3 in the middle of the day then N. Gusts reaching 23 knots in the morning. Slight sea. Low, short swell from W. Excellent visibility.