We experienced the Mistral over three days in Marseille, beautiful blue skies and warm weather but with wind blasting debris everywhere, including eyes, hair and camera equipment. Then another time in Saint Raphael, same again. Not at all comfortable! Holiday spoilt.
However, the coast from Mandelieu (just west of Cannes) to Menton (on the Italian Border) is protected from the Mistral by the Alpes-Maritimes range of mountains, while wealthy St Tropez is protected by a smaller range, Massif des Maures.
Voila! The Côte d’Azur/French Riviera misses out on blasted Mistral and has near perfect summer temperatures moderated by the Mediterranean Sea.