For La Tranche-sur-Mer :
No gale warning.
We are 90% sure of the situation, because the atmosphere might not be as stable as forecast.
Very cloudy skies with short clear spells. Risk of some spots of rain in the morning, no precipitation in the afternoon. In the evening, very cloudy skies to overcast.
Possibility of showers SE force 2 freshening S force 4 in the middle of the day then SW force 5. Gusts reaching 24 knots in the evening. Slight sea. Low, fairly long swell from W. Visibility reduced by mist becoming poor in the middle of the day then excellent.