Weather will likely play an important role when you plan your trip to Shanjiao, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August with an average temp of 83°F, while the coldest months are January and February with an average of 72°F. The rainiest months in Shanjiao are August, June, July, and September, with each month seeing an average of 14 inches of rainfall.