The Best Time to Visit Okinawa is the end of Oct – beginning of Nov, there are no tourists, still hot and the ocean is warm and calm.
For access the islands you neeed to take ferry from Naha. There are high-speed ferries from Tomari Port in Naha to three of the Kerama Islands: to Tokashiki Island ( 40 minutes), Zamami Island (50-70 minutes), and Aka Island (50 minutes).
My next trip – Shanghai and Sapporo cities, subcribe and do not miss an Insider’s Guide to Shanghai