Damgan, France offers 1 beach perfect for sunbathing, surfing, swimming, and more. Damgan is known for its beautiful beaches and the Pointe de Kervoyal. The best time to travel to Damgan, France, is from June to September, when the average air temperature is around 18-22°C (64-72°F) and the water temperature is approximately 17-20°C (63-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!