Why is it so hot in Hunan?

The high temperature in Hunan is mainly determined by the location and intensity of subtropical high.

Since the flood season, the subtropical high has fluctuated greatly from north to south, so the climate is mainly characterized by sunny and rainy days, sometimes high temperature and sometimes rain. Even during the rainfall concentration period from June 17 to June 25, the subtropical high did not stay in one place for a long time, so the rain belt showed obvious stage characteristics from north to south.

When controlled by subtropical high, high temperature comes; But when it is located in the convergence zone of warm and humid airflow on the north side of subtropical high and dry and cold air on the south side, it will produce rainfall. Due to the "distraction" of the subtropical high, it did not stay in the position suitable for continuous rainfall in Hunan, resulting in less rainfall as a whole, while the high temperature weather was more than normal.

Climate in Hunan:

Hunan is a continental subtropical monsoon humid climate with the following characteristics: First, light, heat and water resources are abundant, and their high values are basically synchronous. Second, the climate changes greatly in a year. It is hot in Leng Xia in winter, changeable in spring, sudden drop in autumn, rainy in spring and summer, and drought in autumn and winter. The climate changes greatly from year to year.

According to the statistics of meteorological stations in various counties of Hunan Province, the average annual temperature is generally 16 ~ 19℃. In winter (65438+ 10), the average temperature in Leng Yue is above 4℃, and the average number of days when the average annual daily temperature is below 0℃ is less than 10 days. The average temperature in spring and autumn is mostly between 16 ~ 19℃, and the temperature in autumn is slightly higher than that in spring. The average temperature in summer is mostly between 26 and 29℃.

Reference to the above content: Baidu Encyclopedia-Hunan