Why is it so hot in early autumn? Why is it so hot in early autumn?

1. Generally speaking, beginning of autumn only represents the arrival of autumn in the astronomical sense, not in the meteorological sense. Therefore, it will be hot in beginning of autumn in the future, and it is dog days in beginning of autumn. It is the hottest dog days in a year, and the hottest stage is in the middle. In addition, the southern part of China is still in high temperature in summer at the beginning of the autumn solar term, and the temperature is even higher with the gradual disappearance of typhoon and storm seasons.

2. The high temperature will last about 20 days after autumn.

3. After beginning of autumn, it will take some time to find that the weather will gradually turn cold. There is a saying that there is a fire in the world after beginning of autumn 18, which refers to the change of weather conditions after beginning of autumn. About 20 days after beginning of autumn, it has entered the early autumn, which is the second solar term in autumn. At this time, the weather will gradually turn cold. Even if the temperature is above 30 during the day, it will be cool in the morning and evening.

It is usually noon in beginning of autumn. The so-called "dog days heat" can be divided into three days: the beginning, the middle and the end. The date of beginning of autumn is determined by the date of solar terms and the date of dry expenditure. According to the traditional calculation method in China, the third and fourth Geng days from summer to the future are the first (head) and middle start dates respectively, and the first Geng day after beginning of autumn is the first day of the last day, because every Geng day is 6544 years apart. Therefore, the stipulated time of the first and last days is 10 day. Because the third Geng Day (the first day) after the summer solstice solar term appears sooner or later, the number of days in between may be 10 day or 20 days. According to the calculation method of three volts, beginning of autumn is often at noon, which means that just because beginning of autumn enters the solar term does not mean that the temperature will drop.