For Dinan-Lanvallay :
No gale warning.
For the night from Saturday to Sunday NW force 2 in the early part of the night becoming force 1. Gusts reaching 12 knots in the early part of the night.
Slight sea. Low from N. Excellent visibility becoming good in the middle of the night then good. Daytime of Sunday 23 august : The sky will remain changeable.
Skies changeable to very cloudy. Possibility of showers late in the morning, possibility of showers in the afternoon. In the evening, good clear periods but lots of cloud, too.
Showers towards the end of the night. NW force 2 in the morning becoming NNW force 3 in the middle of the day. Gusts reaching 15 knots in the evening. Slight sea becoming smooth to slight in the middle of the day. Low from N. Good visibility becoming excellent in the middle of the day.