The best time to go to Huancayo is generally during the dry season, which runs from April to October.
During these months, you'll experience clearer skies and less rainfall, making it ideal for exploring the city and its surrounding areas. The daytime temperatures are pleasant, typically ranging from 18°C to 22°C, though evenings can be cooler. This period is particularly good for outdoor activities like visiting the Torre Torre rock formations or the Ingenio Trout Farm.
For those interested in local culture and festivals, June and July are particularly good. Inti Raymi, the Inca Festival of the Sun, is celebrated in June, and while the main celebrations are in Cusco, smaller, authentic festivities often occur in Andean towns like Huancayo. This time of year offers a chance to see more traditional events and parades.
If you prefer to avoid larger crowds, the shoulder months of April, May, September, and October offer good weather with fewer visitors.