A southwesterly and very variable flow prevails over the whole area.
For Dinan-Lanvallay :
No gale warning.
The reliability of the situation is poor.
For the night from Wednesday to Thursday ENE force 2 turning SSE force 1 in the middle of the night then SSW. Gusts reaching 10 knots in the early part of the night.
Slight sea becoming smooth to slight in the middle of the night. Low, short swell from NE then fairly long from WNW at the end of the night. Excellent visibility. Daytime of Thursday 13 august : The weather will be good.
Fair weather with mostly clear skies. In the evening, skies with few clouds.
WNW force 2 in the morning freshening NNW force 4 in the middle of the day. Gusts reaching 18 knots in the evening. Smooth to slight sea becoming slight in the evening. Low, fairly long swell from WNW. Excellent visibility becoming excellent in the evening.