Cusco is a year-round destination and can be visited during any month/season of the year. The city boasts similar daytime temperatures throughout the year. The summer season in Cusco is the off season as it is the hottest and the wettest season with high precipitation levels. The winter season boasts pleasant daytime temperatures but cold chilly nights. The winter season is also the driest season making it a great time to go and explore the city.
The best time to visit Cusco is during the winter season as the temperatures remain comfortable and dry. One can easily indulge in the various sightseeing tours and outdoor activities which otherwise would not be possible. If you wish to avoid the peak season winter crowds, peak season inflated prices as well as the heavy summer rains, early spring (September), is a great time to visit Cusco.