Millboro, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Millboro, Virginia, United States, is known for its proximity to the scenic beauty and outdoor recreational opportunities of the George Washington and Jefferson National Forests. The best time to travel to Millboro, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and water temperature in nearby lakes 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!