A westerly, very strong and very variable flow prevails over the South and the West of the basin. Over the North-East, it is southwesterly, very strong and very variable.
For Le Gros Jonc :
No gale warning.
The reliability of the situation is assessed at 90%.
Some fair-weather cumulus clouds. In the evening, cloudy spells, sometimes dense.
No precipitation. WNW force 5 in the middle of the day becoming force 4 in the evening. Gusts reaching 26 knots in the middle of the day. Slight sea. Low, fairly long swell from WSW. Excellent visibility.