If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Andahuaylas: The hottest months are usually November and October, with an average temperature of 10°C, while the coldest months are July and June, with an average of 8°C. The rainiest months in Andahuaylas are January, February, December and March, with each month seeing an average of 236 mm of rainfall.