Highland Beach, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Highland Beach, Maryland, United States, is known for its historical significance as a summer retreat for prominent African American families, including the family of Frederick Douglass. The best time to travel to Highland Beach, United States, is from March to May, with average air temperatures ranging from 70°F to 85°F and water temperatures around 75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!