Manitowoc, United States offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Manitowoc is known for the Wisconsin Maritime Museum and the Rahr-West Art Museum. The best time to travel to Manitowoc, 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 Michigan is approximately 60-70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!