Dry Tortugas, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Dry Tortugas is known for the Dry Tortugas National Park, which includes Fort Jefferson and offers snorkeling, birdwatching, and pristine beaches. The best time to visit Dry Tortugas is from March to May, with average air temperatures around 75-85°F and water temperatures ranging from 75-80°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!