For Fos-Sur-Mer :
No gale warning.
For the night from Saturday to Sunday W force 2 in the early part of the night turning NNW. Gusts reaching 11 knots in the early part of the night.
Smooth to slight sea. Low from N. Excellent visibility. Daytime of Sunday 20 july : The weather will be good.
Fair weather with mostly clear skies. In the evening, skies with few clouds.
NNW force 2 turning WSW in the middle of the day then SW. Gusts reaching 13 knots in the evening. Smooth to slight sea. Low from N. Excellent visibility.