After beginning of autumn, it is already autumn?

Beginning of autumn just means the beginning of autumn, and the heat has not completely passed. It will not dissipate until after the heat, and the weather will gradually turn cold. Based on years of experience, the Han people summed up the saying of twenty-four autumn tigers, which was widely circulated. This means that if it doesn't rain on that day in beginning of autumn every year, it will be as hot for 24 days after beginning of autumn.

There will be autumn tiger weather after beginning of autumn. Autumn Tiger in China refers to the short-term hot weather after beginning of autumn. It usually happens at the turn of August and September and lasts about 7- 15 days.

The reason for the formation of autumn tiger is that the western Pacific subtropical high that controls China gradually moves southward in autumn, but moves northward. Under the control of this high pressure, it turned cloudy and sunny locally, with strong solar radiation and rising temperature. This regenerative weather is called "old woman summer" weather in Europe and "Indian summer" weather in North America.

Due to the vast territory of China, the performance of "Autumn Tiger" is slightly different. For example, the autumn tigers in South China are later than those in the Yangtze River valley, generally delayed by 2-4 solar terms. In addition, the prevention and control time of autumn tigers is long and short every year, ranging from half a month to two months.