Trouville sur Mer, France offers 1 beach perfect for sunbathing, surfing, swimming, and more. Trouville sur Mer is known for its picturesque beach, the historic Hotel des Roches Noires, and the vibrant fish market. The best time to travel to Trouville-sur-Mer, France, is from June to September, with average air temperatures around 60-70°F (15-21°C) and water temperatures around 60-65°F (15-18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!