Deal Island Historic, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Deal Island Historic, Maryland, United States, is known for its annual Skipjack Race and Festival, celebrating the region's maritime heritage. The best time to travel to Deal Island Historic, United States, is in late spring or early fall when the average air temperature is around 70°F and the water temperature is approximately 65°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!