Cambridge, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Cambridge, Wisconsin, United States, is known for Lake Ripley and the Cambridge Historic School Museum. The best time to travel to Cambridge, United States, is in late spring (May to early June) when the average air temperature is around 60-70°F and water temperature is approximately 50-60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!