Williamsburg, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Williamsburg, Michigan, United States, is known for the Turtle Creek Casino & Hotel. The best time to travel to Williamsburg, United States, is in the spring (April to June) when the average air temperature is around 60-75°F and water temperature is approximately 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!