Other facts from our historical weather data: When is the rainy season in Huancayo? Rainy season in Huancayo occurs in the months of January, February, March, November and December. Which is the warmest month in Huancayo? November has an average maximum temperature of 14°C (57°F) and is the warmest month of the year. Which is the coldest month in Huancayo? The coldest month is July with an average maximum temperature of 13°C (55°F). Which is the wettest month in Huancayo? February tops the wettest month list with 271mm (10.7 in) of rainfall. Which is the driest month in Huancayo? June is the driest month with 33mm (1.3 in) of precipitation. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.