Other facts from our historical weather data: When is the rainy season in Cusco? Rainy season in Cusco occurs in the months of January, February, March and December. Does Cusco have a dry season? Yes, the months of June and July are very dry. Which is the warmest month in Cusco? October has an average maximum temperature of 17°C (63°F) and is the warmest month of the year. Which is the coldest month in Cusco? The coldest month is July with an average maximum temperature of 15°C (59°F). Which is the wettest month in Cusco? February tops the wettest month list with 246mm (9.7 in) of rainfall. Which is the driest month in Cusco? July is the driest month with 17mm (0.7 in) of precipitation. Which is the sunniest month in Cusco? July is the sunniest month with an average of 257 hours of sunshine. 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.