A southwesterly, very strong and variable flow prevails over the whole area.
For La Tranche-sur-Mer :
Warning strong breeze offshore.
We are 90% sure of the situation, because flows might be far more disturbed than forecast.
Skies very cloudy, becoming totally overcast during the morning, good clear periods with lots of cloud in the afternoon. Risk of showers in the morning, no precipitation in the afternoon. In the evening, overcast skies.
Showers towards the end of the night. WSW force 6 in the morning temporarily SW force 5 in the middle of the day. Gusts reaching 34 knots in the morning. Rough sea becoming moderate in the middle of the day. Moderate, long swell from W. Good visibility becoming excellent in the middle of the day.