A westerly, moderate and variable flow prevails over the whole area.
For Tréboul - Sables Blancs :
No gale warning.
The reliability of the situation is assessed at 85%.
Good clear periods alternating with cloudy spells, rather dense in the morning. Risk of some spots of rain in the morning, no precipitation in the afternoon. In the evening, good clear periods but cloud building.
Chance of light rain. NW force 3 in the morning becoming WNW force 4 in the middle of the day. Gusts reaching 22 knots in the middle of the day. Smooth to slight sea becoming slight in the middle of the day. Low, fairly long swell from WNW. Excellent visibility becoming excellent in the middle of the day.