When does winter begin?

Beginning of winter is the nineteenth of the twenty-four solar terms. Bucket handle points to the northwest, and the longitude of the sun reaches 225. Every year, the solar calendar165438+1October 7-8. Beginning of winter is a seasonal solar term, which means that it has entered winter since then. Stand still, build the beginning; In winter, everything will be collected in the end. Beginning of winter means that anger begins to close and everything enters a state of recuperation. Its climate has gradually changed from dry autumn to rainy and cold winter.

Meteorological changes:

In early winter, the sun has reached the longitude of 225 degrees, and the northern hemisphere gets less and less solar radiation. However, there is still some energy in the heat stored on the surface in the second half of this year, so it is generally not too cold in early winter. In winter, the northeast wind and the north wind are the main winds.

In southern China, sunny, warm and comfortable "Xiaoyangchun" weather often appears from beginning of winter to Xiaoxue. There is a folk saying that "it's sunny in October". As the saying goes, "it's warm in August and warm in September, and it's sunny in October". Generally, it is not very cold in early winter in the south, but with the passage of time, cold air frequently goes south and the temperature gradually drops.

Refer to the above content: Baidu Encyclopedia-beginning of winter