Weather will likely play an important role when you plan your trip to Tapalpa, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually May and April with an average temp of 70°F, while the coldest months are January and February with an average of 63°F. The rainiest months in Tapalpa are August, July, September, and June, with each month seeing an average of 14 inches of rainfall.