Weather will likely play an important role when you plan your trip to Valdivia, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually January and February with an average temp of 60°F, while the coldest months are July and August with an average of 46°F. The rainiest months in Valdivia are August, June, July, and May, with each month seeing an average of 12 inches of rainfall.