Long Beach, United States offers 54 beaches perfect for sunbathing, surfing, swimming, and more. Long Beach, Maryland, United States, is known for its proximity to the Chesapeake Bay and the Calvert Cliffs State Park. The best time to travel to Long Beach, United States, is from May to October, with average air temperatures ranging from 65°F to 85°F and water temperatures around 60°F to 70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!