Why is the rainy season in Xi in autumn?

Because Xi 'an belongs to temperate continental climate, it is obviously influenced by the autumn rain in West China, which is the main reason for the heavy autumn rainfall in Xi 'an.

Autumn rain in West China is one of the famous phenomena in meteorology, which refers to the rainy weather in autumn in western China. The western part of China includes Shaanxi, southern Gansu, Sichuan, Chongqing, Guizhou and a small part of northeastern Yunnan.

After beginning of autumn every year, when most other parts of the country are crisp and sunny in autumn, this area in the eastern part of the Qinghai-Tibet Plateau is often rainy.

Extended data:

The autumn rain in West China is characterized by continuous drizzle. Although there are many rainy days, there is not much rainfall. The annual changes of autumn rain in West China are great, some years are not obvious, and some years are rainy and continuous, as long as 1 month.

The autumn rain in West China has a great influence on the mature harvest of mid-season rice, corn, ratooning rice and other crops, which makes the crops unable to dry after harvest, leading to seed germination and mildew, high yield and poor harvest.

Since the beginning of 2 1 century, the autumn rains in western China have been frequent and intense. In 2003 and 2005, there was an obvious autumn rain weather in western China, and there was heavy precipitation in continuous rainy days. Autumn floods occurred successively in the Yellow River Basin and the Weishui River Basin, which led to a significant reduction in autumn harvest crops in some areas.

References:

Baidu Encyclopedia-Huaxi Yu Qiu