If you're looking forward to lots of outings with your partner, check out these details about year-round temperatures in Andahuaylas: The hottest months are usually November and October with an average temp of 50°F, while the coldest months are July and June with an average of 46°F. The rainiest months in Andahuaylas are January, February, December, and March, with each month seeing an average of 9 inches of rainfall.