Climate and ClothingWith temperatures ranging from 20°C to 30°C (68°F to 86°F), it can be warm, especially in early fall, but it can cool off rapidly in November. In Okinawa, temperatures range from 20°C to 28°C. Light jackets, sweaters, and overcoats are useful. Long-sleeved shirts, light sweaters, jeans or light pants are appropriate.