Huangmeitian, the rainy season, refers to a season with high humidity, high temperature and plenty of rain, which is suitable for plant growth. However, Shanghai is located in the south of the Yangtze River, with a warm and humid climate and influenced by the southeast monsoon. The rainy season usually begins in June, and the specific time of rain will be different every year because of climate change.
The rainy season in Shanghai generally starts in June and ends in July, lasting about 30 days. During this period, the weather in Shanghai is sunny and rainy, and the rainfall of more than 20 days accounts for about 1/4 of the whole year. It is not suitable for traveling during this period. You can take an umbrella when traveling.