Bivalve, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Bivalve, Maryland, United States, is known for its rich maritime heritage and the annual Nanticoke River Jamboree. The best time to travel to Bivalve, United States, is in late spring (May to June) when the average air temperature is around 65-75°F and the 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!