Aberdeen Proving Ground, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Aberdeen Proving Ground is known for the U.S. Army's testing and research facilities. The best time to travel to Aberdeen Proving Ground, United States, is in late spring (May), when the average air temperature is around 65°F (18°C) and the nearby Chesapeake Bay water temperature is approximately 60°F (16°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!