Piana, France offers 1 beach perfect for sunbathing, surfing, swimming, and more. Piana is known for the Calanques de Piana, a UNESCO World Heritage site featuring stunning red rock formations. The best time to travel to Piana, France, is from June to September, with average air temperatures around 75°F (24°C) and water temperatures near 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!