Lake Geneva, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Lake Geneva is known for its historic Grand Geneva Resort, the scenic Geneva Lake Shore Path, and the annual Winterfest featuring the U.S. National Snow Sculpting Championship. The best time to travel to Lake Geneva, United States, is during the summer months of June to August, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 70°F (21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!