Dolus d Oleron, France offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Dolus d Oleron is known for its proximity to the Marais aux Oiseaux and the Port des Salines. The best time to travel to Dolus d'Oleron, France, is from June to September, with average air temperatures around 20-25°C (68-77°F) and water temperatures around 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!