If you're looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Vilcabamba: The hottest months are usually September and October, with an average temperature of 18°C, while the coldest months are July and August, with an average of 17°C. The rainiest months in Vilcabamba are March, February, January and April, with each month seeing an average of 314 mm of rainfall.