Cannes, France offers 49 beaches perfect for sunbathing, surfing, swimming, and more. Cannes is known for the Cannes Film Festival. The best time to travel to Cannes, France, is from May to September, when the average air temperature is around 70-80°F (21-27°C) and the water temperature is approximately 68-75°F (20-24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!