In 2022, in which month will the rainy season end?

In 2022, the rainy season began around June 12 and ended around July 16. Meiyu refers to a period of continuous rainy weather in the middle and lower reaches of the Yangtze River in China from mid-June to early and mid-July every year. At this time, the utensils are easy to mildew, so it is also called mildew rain. When the plums in the south of the Yangtze River are yellow, they are also called plum rain or Huang Meiyu.

Plum entry: if the average temperature exceeds 22℃ for 5 consecutive days and it rains for 4 consecutive days, it will be regarded as plum entry;

Plum blossom: On the contrary, if the average temperature exceeds 30℃ for five consecutive days and it doesn't rain, it means plum blossom.

Therefore, the rainy season also depends on the weather, and there is no specific time setting.

Timetable for entering and leaving Mei in Jiangnan District: June 8th (entering Mei)-July 8th (leaving Mei).

Middle reaches of the Yangtze River: June 15 (plum blossom)-July 14 (plum blossom).

Lower reaches of the Yangtze River: June 19 (plum blossom)-July 12 (plum blossom).

Jianghuai District: June 2 1 (entering Mei)-July 15 (leaving Mei)

The weather in Meiyu period is characterized by continuous rain, high temperature and high humidity. After the Meiyu ended, the rain belt moved to North China, and the Jianghuai basin entered high temperature and little rain. The time for rain belt to stay is called rainy season, the day when rainy season begins is called plum blossom, and the day when rainy season ends is called plum blossom.

The reason for the rainy season is that from late April to early May every year, cold air from the north and warm air from the south meet in South China, forming a quasi-static front in South China. By the end of May, the influence of warm air was strengthened, and the quasi-static front moved northward to Jianghuai area, becoming the quasi-static front of Jianghuai (also known as Meiyu front). Because the warm air from the south carries a lot of water vapor, when it meets the cold air mass, it will produce a lot of convection activities. Because of the equal influence of cold and warm air during this period, the front stays in Jianghuai area.

Typical plum rains generally enter plum in the middle and late June, and bloom in the early and middle July. Meiyu refers to the rainy days before plum blossom, which generally starts in mid-April and lasts for about half a month.