Captiva, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Captiva, Florida, United States, is known for its beautiful beaches, the J.N. "Ding" Darling National Wildlife Refuge, and the historic South Seas Island Resort. The best time to travel to Captiva, United States, is from November to April, with average air temperatures ranging from 70°F to 85°F and water temperatures between 70°F and 80°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!