A northerly, weak and particularly variable flow prevails over the whole area.
For Saint-Briac-sur-Mer :
No gale warning.
For the night from Friday to Saturday NNE force 2 becoming force 1 in the middle of the night then NE. Gusts reaching 13 knots in the early part of the night.
Smooth to slight sea. Low, short swell from WNW. Excellent visibility becoming good in the middle of the night then good. Daytime of Saturday 22 august : The atmosphere will remain unstable.
Skies changeable to very cloudy. Light showers all day. In the evening, good clear periods but lots of cloud, too.
Chance of light rain. NE force 1 in the morning freshening N force 3 in the middle of the day. Gusts reaching 16 knots in the evening. Smooth to slight sea. Low, short swell from WNW. Good visibility becoming excellent in the middle of the day.