Weather will likely play an important role when you plan your trip to Ruíz, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually May and June with an average temp of 81°F, while the coldest months are January and February with an average of 73°F. The rainiest months in Ruíz are August, September, July, and October, with each month seeing an average of 10 inches of rainfall.