An easterly, very strong and very variable flow prevails over the North and the East of the basin. Over the South-West, it is southerly, strong and very variable.
For Cassy - Port de Lanton :
No gale warning.
The reliability of the situation is assessed at 90%.
Fair weather with mostly clear skies. In the evening, relatively clear skies becoming changeable.
ESE force 3 turning WSW force 4 in the middle of the day then becoming force 3. Gusts reaching 21 knots in the middle of the day. Smooth sea. Low, fairly long swell from NW. Excellent visibility becoming poor in the evening.