A westerly, moderate and particularly variable flow prevails over the whole area.
For Berck sternes :
No gale warning.
The reliability of the situation is poor.
For the night from Monday to Tuesday SW force 2 in the early part of the night turning S. Gusts reaching 11 knots at the end of the night.
Smooth sea. Low, short swell from W. Visibility reduced by mist becoming reduced by mist in the middle of the night then good. Daytime of Tuesday 15 september : Improving during the day:the sky will clear.
Cloud and long sunny periods. Possibility of showers late in the morning, possibility of showers in the afternoon. In the evening, lots of good clear periods.
Light showers progressively becoming less frequent. SW force 3 turning W force 4 in the middle of the day then becoming force 3. Gusts reaching 18 knots until the middle of the day. Smooth sea becoming smooth to slight in the evening. Low, short swell from W. Good visibility becoming excellent in the middle of the day.