Waubay, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Waubay, South Dakota, United States, is known for the Waubay National Wildlife Refuge and its proximity to the glacial lakes region. The best time to travel to Waubay, United States, is in late spring or early fall when the average air temperature is around 60-70°F and the water temperature is 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!