For Royan :
No gale warning.
For the night from Friday to Saturday NNW force 3 turning NNE force 2 in the middle of the night then NE. Gusts reaching 12 knots until the middle of the night.
Smooth sea. Low from N. Excellent visibility. Daytime of Saturday 22 august : The weather will become more uncertain during the day.
Good clear periods alternating with cloudy spells, sometimes more dense in the afternoon. The risk of seeing rain will remain low. In the evening, cloudy spells, sometimes dense.
Chance of light rain. ENE force 2 in the morning turning NW force 3 in the middle of the day. Gusts reaching 15 knots in the evening. Smooth sea. Low from N. Excellent visibility.