Lake Mills, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Lake Mills is known for Rock Lake and the legendary underwater pyramids. The best time to travel to Lake Mills, 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 is approximately 70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
