Crystal Lake, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Crystal Lake, Illinois, United States, is known for its namesake lake which offers recreational activities like boating, fishing, and swimming. The best time to travel to Crystal Lake, 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!
