Climate and ClothingTemperatures range from 25 to 35 degrees Celsius with occasional high temperatures and humidity. In Okinawa, the temperature ranges from 25 to 33 degrees Celsius. Clothing should include light shirts, T-shirts, shorts, and cool materials. Hats and sunscreen are also important. Shuri Castle (Okinawa) Shuri, a symbol of the former Ryukyu Kingdom, with its beautiful bright vermilion color.