Weather will likely play an important role when you plan your trip to Catamarca, 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 72°F, while the coldest months are July and June with an average of 53°F. The rainiest months in Catamarca are January, February, December, and November, with each month seeing an average of 7 inches of rainfall.