Being in the summer is the fourteenth of the twenty-four solar terms. The bucket refers to the southwest; Sun meridian150; On August 22-24 of the Gregorian calendar every year. The solar term of summer in 2023 is at 5: 34: 48 on August 23, 2023, and on Wednesday, the eighth day of the seventh lunar month. Being in the summer heat means "getting out of the summer heat", which means leaving in the heat. At the summer, the direct point of the sun continues to move southward, the solar radiation weakens, the subtropical high also retreats southward, the temperature gradually drops, and the summer heat gradually disappears.
During the summer heat, the obvious cooling places are only the northeast and northwest regions. However, whenever cold air affects China, if the air is dry, it will often bring windy weather, and if there is warm and humid airflow in the atmosphere, it will often form a decent autumn rain. Every time after the storm, especially after the rain, people will feel more obvious cooling. Therefore, there is a saying that "an autumn rain and a cold".
Climatic characteristics in summer
After the summer, the temperature gradually decreased and the temperature difference between day and night gradually increased, but the temperature was still high during the day. The reasons for this phenomenon are: first, the direct point of the sun continues to move southward, and the solar radiation decreases; Second, the subtropical high retreated to the south by leaps and bounds, and the Mongolian cold high began to be eager to try.
Although the overall temperature will show a downward trend, the temperature will still return to heat for a short time during the summer, which is that the "autumn tiger" usually occurs between August and September, and the duration of the autumn tiger varies from half a month to two months in general. Although the temperature is high, generally speaking, the air is dry and sunny, and the temperature difference between morning and evening will not be too high. The reason for the autumn tiger weather is that the subtropical high that retreated southward has once again returned to control, forming a high-temperature and hot weather with clear days and strong sunlight.