Mackall, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Mackall, Maryland, United States, is known for its proximity to the Patuxent River and the nearby attractions of the Patuxent River Naval Air Museum. The best time to travel to Mackall, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and the water temperature is approximately 65°F (18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!