Traditional Culture Encyclopedia - Weather forecast - Is it hot in September?
Is it hot in September?
Summer is the second season in the four seasons of the year, from long summer to early autumn. High temperature is the most prominent climate feature in summer, but due to different regions and different dry and wet environments, different climates will be produced, such as hot and dry or wet and rainy. China has a vast territory, and the summer climate in different regions is different.
Generally speaking, the southeast monsoon region is hot and rainy in summer, the southwest high-altitude region is cool and rainy in summer, and the northwest region is hot and dry in summer.
time division
In China, summer begins in the long summer (between May 5th and 7th in Gregorian calendar) and ends in the beginning of autumn (between August 7th and 9th in Gregorian calendar). Westerners generally call summer the solstice and autumn the summer. In the southern hemisphere, 65438+February, 65438+ 10 and February are generally designated as summer.
In the northern temperate zone, the meteorological summer is from May 2 1 day to August 23 (summer heat) on the Gregorian calendar. In the south temperate zone, the meteorological summer is165438+1October 22nd (corresponding to the light snow in the northern hemisphere) to February 19 (corresponding to the rain in the northern hemisphere).
According to the characteristics of the earth's revolution, the summer duration in the north temperate zone is theoretically longer than that in the south temperate zone. (At the beginning of July, the earth was at perihelion, and its running speed was slow. At the beginning of 65438+ 10, the earth was at perihelion, and the running speed was fast. )
In the sense of modern climatology (climate average temperature) in China, it is summer when the average temperature exceeds 22 degrees for five consecutive days, and autumn when the average temperature falls below 22 degrees for five consecutive days.
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