La Tranche sur Mer, France offers 18 beaches perfect for sunbathing, surfing, swimming, and more. La Tranche sur Mer is known for its beautiful beaches and the Atlantic Wakepark. The best time to travel to La Tranche sur Mer, France, is from June to September, with average air temperatures around 20-25°C (68-77°F) and water temperatures around 18-21°C (64-70°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!