Good to visit jiuzhaigou on the mid of July?

Generally, it is ok to travel there. It is during summer in many areas in China and the JZG is a good place for summer escape. It may rain a little frequently, but the rain usually happen in the early morning and late in the afternoon, so you can still have a good visit in the daytime. And the scenery will be good with high water level.

From Chengdu, you can take a direct long-distance bus to this scenic area. Buses are on schedule at Chadianzi Bus Station and Xinnanmen Bus Station. It takes 9-10h and the bus fare is CNY139-158 per person.