Yunnan's climate basically belongs to subtropical plateau monsoon type, with obvious three-dimensional climate characteristics, many types, small annual temperature difference, large daily temperature difference, distinct wet and dry seasons, and abnormal vertical temperature change with terrain height. Northwest Yunnan has a cold climate, long winter without summer and short spring and autumn. The eastern and central parts of Yunnan belong to temperate climate, with four seasons such as spring and winter when it rains.
The south and southwest of Yunnan belong to the low-heat valley area, and some of them enter the tropical area south of the Tropic of Cancer, with long summer without winter and rainy to autumn. In a province, there are three climatic zones: cold, warm and hot (including subtropical zone). Generally, the average temperature drops by 0.6℃~ 0.7℃ every time the altitude rises 100 m. There is a saying that "one mountain is divided into four seasons, and ten miles are different", and the scene is unique.