Weather will likely play an important role when you plan your trip to Chachapoyas, and keep in mind that cheaper options are usually available when the weather isn’t as good. The hottest months are usually November and September with an average temp of 60°F, while the coldest months are July and August with an average of 59°F. The rainiest months in Chachapoyas are March, January, February, and December, with each month seeing an average of 11 inches of rainfall.