Cessy les Bois, France offers 1 beach perfect for sunbathing, surfing, swimming, and more. Cessy les Bois is known for its proximity to the scenic Morvan Regional Natural Park. The best time to travel to Cessy les Bois, France, is in late spring (May to June) when the average air temperature is around 15-20°C (59-68°F) and water temperatures in nearby lakes or rivers are typically cooler, around 10-15°C (50-59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!