An easterly and variable flow prevails over the South of the basin. Over the North, it is southwesterly, moderate and very variable.
For Tréboul - Sables Blancs :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Light cloudy spells. In the evening, skies with few clouds.
NW wind force 3 from the middle of the day. Gusts reaching 18 knots in the evening. Smooth to slight sea. Low, fairly long swell from WNW. Excellent visibility.