Chaumont, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Chaumont, New York, United States, is known for its proximity to the scenic Lake Ontario and the historic Tibbetts Point Lighthouse. The best time to travel to Chaumont, United States, is during the summer months of June to August, when the average air temperature is around 70-80°F and the water temperature in Lake Ontario is approximately 65-75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!