Marco Island, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Marco Island is known for its beautiful beaches, the Rookery Bay National Estuarine Research Reserve, and the nearby Ten Thousand Islands. The best time to travel to Marco Island is from December to April, with average air temperatures around 75°F (24°C) and water temperatures near 70°F (21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!