If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Purmamarca: The hottest months are usually January and December, with an average temperature of 18°C, while the coldest months are July and June, with an average of 12°C. The rainiest months in Purmamarca are February, December, March and January, with each month seeing an average of 298 mm of rainfall.