Camp Douglas, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Camp Douglas, Wisconsin, United States, is known for Volk Field Air National Guard Base and the nearby Mill Bluff State Park. The best time to travel to Camp Douglas, United States, is in late spring or early fall when the average air temperature is around 60-70°F, and water temperatures in nearby lakes are typically 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!