For Le Tréport :
No gale warning.
For the night from Wednesday to Thursday WNW force 2 in the early part of the night becoming W force 1. Gusts reaching 13 knots until the middle of the night.
Slight sea. Low from N. Excellent visibility temporarily in the middle of the night. Daytime of Thursday 20 august : The sky will remain changeable.
Good clear periods alternating with cloudy spells, sometimes dense. Risk of showers in the morning, showers late in the day. In the evening, cloudy spells, sometimes dense.
Light showers. WSW force 1 turning NW force 2 in the middle of the day then becoming force 3. Gusts reaching 13 knots in the evening. Slight sea. Low, short swell from WNW. Excellent visibility.