Why is there no cold in winter and no heat in summer in Old Town of Lijiang?

Because Lijiang belongs to the low latitude warm temperate plateau mountain monsoon climate.

Due to the great difference in altitude, Lijiang's climate is distributed from the south subtropical zone to the alpine zone, with little change in four seasons, distinct wet and dry seasons, obvious vertical difference in climate, more severe weather, small annual temperature difference and large temperature difference between day and night, which has the characteristics of maritime climate and continental climate.

Southeastern and southwestern windward slopes are rainy areas, leeward slopes are relatively dry and rainless areas, and Jinsha River Valley is dry and rainless. The annual average temperature in the city is between 12.6 ~ 19.9℃, and the frost-free period is 19 1 ~ 3 10 days. The annual average rainfall is 9 10 ~ 1040mm, and the rainy season is concentrated in June to September. The annual sunshine hours are 232 1 ~ 2554 hours.

Extended data

Lijiang Hydrology: Lijiang's rivers belong to two major river basins and three major river systems, namely Jinsha River system in the Yangtze River basin, Yalong River system in the Lancang River basin and Heihui River system.

Among them, the Yangtze River basin covers an area of 20,799 square kilometers, accounting for 98% of the total area; The Lancang River basin covers an area of 420 square kilometers, accounting for 2% of the total area. There are 93 secondary and above tributaries of Jinsha River, Yalong River and Lancang River in the city, including 2 1 river with a basin area of 200 square kilometers and above.

There are three natural lakes in China: Lugu Lake, Chenghai Lake and Lashihai Lake. Chenghai, located in Chenghai Town in the middle of Yongsheng County, is an inland rift alkaline deep-water lake. The basin covers an area of 3 18.3 square kilometers, with a width of 3.5 kilometers from east to west and a length of 20 kilometers from north to south. 198 1 annual average water level 15 18.26 meters, with a relative water surface area of 77 square kilometers.

Baidu Encyclopedia-Lijiang