Marco Island located on an island by the same name in the Gulf of Mexico off the coast of Southwest Florida. Originally named San Marco Island by Spanish explorers, Marco Island is the largest barrier island within Southwest Florida's Ten Thousand Islands area extending southerly to Cape Sable. Like the City of Naples to the north, Marco Island enjoys a tropical climate, specifically a tropical wet and dry or savanna type It is known for distinct wet and dry seasons, with most of the rainfall falling between the months of June and October.