Weather will likely play an important role when you plan your trip to Zigong, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July, with an average temperature of 26°C, while the coldest months are January and December, with an average of 12°C. The rainiest months in Zigong are July, August, June and September, with each month seeing an average of 193 mm of rainfall.