Weather will likely play an important role when you plan your trip to Manizales, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and September with an average temp of 60°F, while the coldest months are January and December with an average of 59°F. The rainiest months in Manizales are May, April, October, and June, with each month seeing an average of 29 inches of rainfall.