When is the coolest in early autumn?

Probably after the autumn tiger ended, the weather began to turn cold gradually. Because after beginning of autumn, there will be a short period of high temperature weather, which is the so-called autumn tiger. It usually happens at the turn of August and September and lasts about 7- 15 days. 20 17 beginning of autumn was on August 7, 20 17, on June 16th of the lunar calendar. Generally speaking, the duration of autumn tiger is about 7- 15 days. Therefore, the autumn tiger on 20 17 is expected to end during August 14-22.

Extended answer:

Just because beginning of autumn has arrived, it doesn't mean it will get cold immediately. Meteorologists pointed out that in fact, the hot weather after autumn has little to do with the morning and evening. Whether there will be high temperature weather in the future depends on subtropical high and cold air. If typhoons are frequent like some time ago, or the pace of cold air going south is accelerated, then the probability of heat is small. Generally, after beginning of autumn, the summer heat will reappear, and then the "autumn tiger" will appear.

According to previous years' experience, beginning of autumn will be hot for a while, not for a long time. Generally speaking, there is a saying that there is a fire between heaven and earth after beginning of autumn. /kloc-After 0/8 days, it began to cool in the morning and evening, and then the weather was more comfortable than that in July.