A northeasterly and very variable flow prevails over the South of the basin. Over the North, it is westerly, moderate and particularly variable.
For Calais :
No gale warning.
The reliability of the situation is poor.
For the night from Monday to Tuesday NNE force 1 in the early part of the night turning NW. Gusts reaching 15 knots at the end of the night.
Slight sea. Low, short swell from NE. Good visibility becoming good in the middle of the night. Daytime of Tuesday 23 december : The sky will remain changeable.
Good clear periods alternating with cloudy spells, sometimes dense. Risk of some spots of rain in the morning, possibility of showers in the afternoon. In the evening, cloud and long sunny periods.
Possibility of showers WNW force 1 in the morning freshening NNW force 3 in the middle of the day. Gusts reaching 17 knots in the evening. Slight sea. Low, short swell from NNE. Good visibility becoming good in the middle of the day then excellent.