Oakland, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Oakland, Maryland, United States, is known for Swallow Falls State Park and Deep Creek Lake. The best time to travel to Oakland is from May to October, with average air temperatures ranging from 60-75°F and water temperatures around 55-60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!