For Berck sternes :
No gale warning.
For the night from Tuesday to Wednesday NNW force 2 in the early part of the night temporarily force 1. Gusts reaching 13 knots all night.
Slight sea. Low, short swell from W. Excellent visibility. Daytime of Wednesday 23 september : The sky will remain changeable.
Cloud and long sunny periods. Risk of showers in the morning, possibility of showers in the afternoon. In the evening, cloud and long sunny periods.
Possibility of showers NW force 2 in the morning becoming force 3 in the middle of the day. Gusts reaching 14 knots until the middle of the day. Slight sea becoming smooth to slight in the middle of the day. Low, short swell from W. Excellent visibility.