Weather will likely play an important role when you plan your trip to Chợ Rã, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually June and July with an average temp of 79°F, while the coldest months are January and December with an average of 61°F. The rainiest months in Chợ Rã are June, August, July, and May, with each month seeing an average of 16 inches of rainfall.