A westerly, moderate and very variable flow prevails over the whole area.
For Saint-Malo - Port Vauban :
No gale warning.
The reliability of the situation is poor.
For the night from Monday to Tuesday NNE force 1 turning SW in the middle of the night then WSW. Gusts reaching 7 knots at the end of the night.
Smooth sea. Low, fairly long swell from WNW. Poor visibility becoming reduced by mist in the middle of the night. Daytime of Tuesday 15 september : Warning:reduced visibility early in the day.
Fog giving way to sun in early morning, cloud and sun in the afternoon. No precipitation in the morning, light showers in the afternoon. In the evening, lots of good clear periods.
Light showers progressively becoming less frequent. WSW force 2 in the morning turning NW force 3 in the middle of the day. Gusts reaching 17 knots in the evening. Smooth sea becoming smooth to slight in the middle of the day. Low, fairly long swell from WNW. Visibility reduced by mist becoming excellent in the middle of the day then poor.