Excenevex, France offers 1 beach perfect for sunbathing, surfing, swimming, and more. Excenevex is known for its sandy beach on the shores of Lake Geneva, which is unique in the region. The best time to travel to Excenevex, France, is during the summer months of June to August, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 22°C (72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!