Saint-Georges-De-Didonne, France offers 1 beach perfect for sunbathing, surfing, swimming, and more. Saint-Georges-De-Didonne, Nouvelle-Aquitaine, France, is known for its Grande Conche Beach and the Phare de Vallières lighthouse. The best time to travel to Saint-Georges-De-Didonne, France, is from June to September, when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 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!