Planning an island escape in early autumn? September, October, and November can be some of the best months to visit an island. Summer crowds begin to disappear, temperatures become more comfortable, and many popular destinations still offer warm seas, sunny days, and beautiful beaches. The best island to visit depends on what you want from your vacation. September is ideal for Mediterranean islands and late-summer beach holidays. October is a great time for warm-weather escapes without the peak-season crowds. By November, it is better to look toward tropical islands in the Indian Ocean, Southeast Asia, and the Caribbean. In this guide, we have selected some of the best islands to…