Celestun, Mexico offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Celestun is known for the Celestun Biosphere Reserve, which is famous for its large flocks of flamingos and diverse wildlife. The best time to travel to Celestun, Mexico, is from November to April, with average air temperatures around 75-85°F (24-29°C) and water temperatures around 77-82°F (25-28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!