Weather will likely play an important role when you plan your trip to Hernandarias, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually January and December with an average temp of 79°F, while the coldest months are July and June with an average of 64°F. The rainiest months in Hernandarias are October, May, December, and January, with each month seeing an average of 8 inches of rainfall.