Mauston, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Mauston is known for Castle Rock Lake, Wisconsin's fourth-largest lake, which offers various recreational activities. The best time to travel to Mauston, United States, is in late spring (May to June) when the average air temperature is around 60-70°F, and the nearby water bodies are warming up to 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!