Is it appropriate to go to Hangzhou in October?

Appropriate. According to the China Tourism Network, Zhejiang is rich in tourism resources and has many scenic spots. October is the peak tourist season and the temperature in Hangzhou is suitable, so it is suitable to go to Hangzhou in October. Hangzhou City, referred to as "Hang", was known as Lin'an and Qiantang in ancient times. It is a prefecture-level city, provincial capital, sub-provincial city, and megacity under the jurisdiction of Zhejiang Province.