Perdido Key, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Perdido Key is known for its stunning beaches and the Gulf Islands National Seashore. The best time to travel to Perdido Key is from April to June, with average air temperatures around 75-85°F and water temperatures ranging from 70-80°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!