When is the coldest in Dali, Yunnan?

The temperature difference between the four seasons in Dali is small, and the coldest time is winter. Dali Prefecture is located in the low-latitude plateau. Under the comprehensive influence of low-latitude and high-altitude geographical conditions, the monsoon climate characteristics of the low-latitude plateau are formed: the temperature difference between the four seasons is small.

Close to the Tropic of Cancer, the solar radiation angle is large and the variation range is small, resulting in a small annual temperature difference and the climate characteristics of the four seasons are not obvious. "The qi of the four seasons is often like early spring, with cold ending and summer ending in temperature", and the temperature difference between the four seasons is not big; Tropical monsoon climate is divided into rainy season and dry season.

Dali prefecture is dry in winter and rainy in summer. When the equatorial depression moves (winter165438+1October), the rainfall in dry season accounts for only 5 ~ 15% of the annual rainfall, and when the trade winds move (summer 5 ~ 65438+1October), the rainfall in rainy season accounts for 85 ~% of the annual rainfall. There is a great vertical difference.

Extended data

Hydrology in Dali: There are many lake basins in Dali, of which there are 18 with a basin area of 1.5 square kilometers and an area of *** 187 1.49 square kilometers. It accounts for 6.6% of the total area of Dali Prefecture.

Most of the basins are linear basins, distributed in belts, and arranged into six belts from west to east. The Quaternary mountain glacier site is located in the high mountain area west of Erhai Lake and north of Yongping. Diancang Mountain in Dali is the name of the last ice age in China.

The main rivers belong to Jinsha River, Lancang River, Nujiang River and Honghe River (Yuanjiang River), and there are more than 60 rivers/kloc-0, with wings all over Dali Prefecture. There are eight lakes in this state: Erhai Lake, Tianchi Lake, Zibi Lake, West Lake, East Lake, Jianhu Lake, Haixi Lake and Qinghai Lake.

Baidu Encyclopedia-Dali Bai Autonomous Prefecture