What month is the rainy season in Nanjing?

1, and the general time for Nanjing to enter Mei is June18 ~ 20; The plum blossom period is from June 18 to July 10.

2. The rainy season in Jiangnan usually lasts more than 20 days. Usually the first day after mango seeds is plum blossom, and the first day after light Xia Hou is plum blossom. Mei's arrival is always between June 6th and June 15, and Mei's departure is always between July 8th and June 19.

3. The reason for the rainy season is that from late May to early June 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. Around the end of June, the influence of warm air increased, and the quasi-static front moved northward to the Jianghuai area, becoming a quasi-static front in the Jianghuai area. 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 the cold and warm air forces are similar during this period, the front stays in the Jianghuai area. To put it simply, it is related to the subtropical high in the western Pacific: during the rainy season, the cold air in the north often goes south, and the warm and humid airflow in the southwest goes deep into the north, and the cold and warm air meet, generally forming a rain belt. In normal times, it will be fine if it rains, but it happened that the western Pacific subtropical high system moved northward and pushed this rain belt to the above areas.