Weather is probably a major factor when you plan your trip to Shanghang, but bear 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 temperature of 25°C, while the coldest months are January and December, with an average of 12°C. The rainiest months in Shanghang are June, May, August and April, with each month seeing an average of 245 mm of rainfall.