Caseville, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Caseville is known for its annual Cheeseburger in Caseville festival. The best time to travel to Caseville, United States, is in July 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!