The Japanese prefecture of Okinawa, once known as the Ryukyu Islands, lies in the subtropical zone and enjoys a mean temperature of 22 degrees Celsius throughout the year with only mild seasonal variations, averaging 16 degrees during the winter months.
現為日本沖繩縣的琉球，地屬亞熱帶，年均溫攝氏廿二度，冬天平均十六度，四季溫差小。