What are the climatic characteristics of Changsha, Hunan?

Changsha, Hunan belongs to subtropical monsoon climate, which is characterized by mild climate, abundant precipitation, simultaneous rain and heat, and distinct four seasons. The annual average temperature in Changsha is 17.2℃, the annual accumulated temperature in each county is 5457℃, the annual average precipitation in urban area is 136 1.6 mm, and the annual average precipitation in each county is 1358.6 ~ 65438.

Changsha is long in summer and short in spring and autumn, with about 1 18- 127 days in summer, 1 17- 122 days in winter and 6 1-64 days in spring. The temperature changes greatly in spring, with more rain in early summer, long high temperature in summer and autumn and less cold in winter. From late March to mid-May, cold and warm air crossed each other, forming continuous rainy and low temperature weather.

Since the end of May, the temperature has obviously increased. In summer, the average daily temperature is above 30℃ for 85 days, and in hot days above 35℃, the average annual temperature is about 30 days, and it is very hot and rainy in summer.

After the end of September, it is warmer during the day and cooler at night, with less precipitation and more low clouds. 165438+ 1 from late October to mid-March of the following year, the severe cold period in Changsha is very short, and1is the coldest in June, with a monthly average of 4.4℃-5. 1℃. Overwintering crops can safely overwinter and grow slowly.

Extended data:

The subtropical monsoon climate is hot in summer and warm in winter, with four distinct seasons and developed monsoon. The average temperature in the hottest month is generally higher than 22 degrees Celsius, and the temperature in Leng Yue is between 0- 15 degrees Celsius. The annual precipitation is mostly 800- 1600 mm, and the summer precipitation usually accounts for 70% of the whole year. It should be noted that the subtropical humid climate is similar to the subtropical monsoon climate, but it does not form a monsoon climate due to the differences in thermal properties between land and sea.

Subtropical monsoon climate appears on the east coast of subtropical continent, with latitude of 25-35, such as the area south of Huaihe River in Qinling Mountains and north of tropical monsoon climate in China. Some geoscientists also believe that Daba Mountain area is more suitable as the subtropical northern boundary of China than Qinling Mountain area.

Japan and the southern part of the Korean peninsula also have subtropical monsoon climate distribution, but the monsoon climate in Japan and the Korean peninsula is influenced by the ocean, and its maritime characteristics are obvious.

References:

Baidu Encyclopedia-Changsha

Baidu encyclopedia-subtropical monsoon climate