A westerly, moderate and very variable flow prevails over the whole area.
For Calais :
No gale warning.
The reliability of the situation is poor.
For the night from Thursday to Friday WNW force 3 in the early part of the night becoming W force 4. Gusts reaching 18 knots at the end of the night.
Slight sea. Low, short swell from WSW. Excellent visibility. Daytime of Friday 18 september : The weather will become more uncertain during the day.
Skies changeable becoming very cloudy in the afternoon. The risk of seeing rain will remain low. In the evening, good clear periods but lots of cloud, too.
Possibility of showers W force 4 in the morning becoming WSW force 5 in the middle of the day. Gusts reaching 23 knots in the middle of the day. Slight sea becoming moderate in the evening. Low, short swell from WSW. Excellent visibility.