Nujiang, lying in the longitudinal valley area of Hengduan Mountains in western Yunnan, enjoys a plateau monsoon climate at low latitude. Nujiang features clear dry and wet seasons, great temperature difference between day and night and small temperature difference during the whole year. The average temperature is 16.8℃-20.1℃. Due to the landform and latitude, it is colder in its northern part, warmer in the middle and hot in the south; it is cold in the high mountain area, warm in halfway up the mountain and hot along the Nujiang River. The best time to visit Nujiang is September after the rainy season.