A northerly, weak and mostly variable flow prevails over the South of the basin. Over the North, it is westerly, weak and particularly variable.
For Berck sternes :
No gale warning.
For the night from Friday to Saturday NNE wind force 2 continuing all night. Gusts reaching 11 knots.
Smooth to slight sea. Low, short swell from W. Excellent visibility. Daytime of Saturday 15 august : The sky will remain changeable.
Good clear periods alternating with cloudy spells, sometimes dense. No precipitation. In the evening, cloud and long sunny periods.
No precipitation. NNE force 3 in the morning temporarily NNW force 4 in the middle of the day. Gusts reaching 16 knots in the evening. Smooth to slight sea. Low, short swell from NW. Excellent visibility.