Every year the city of Cusco and its main tourist attraction go through a period of rains, but it is not limited to one wanting to know this world wonder, because it is compressible that the end of the rainy season confuses many people who plan to travel to Machu Picchu during these months. Some people imagine that it rains all day, every day, but this could not be further from the truth; although it is possible to have some of "those days". The season begins the first days of November and ends in April; January and February are the months with the strongest rainfall, with lightning and thunder.
A typical summer day in Cusco and Machu Picchu means a clear sky in the morning, a possible rain in the afternoon (it can be very strong and last a couple of hours), then it will be clear again. However, it is possible that it may get a little wet; You will have the city of Machu Picchu with as few people as possible, being able to take pictures of the structures and trails of Machu Picchu, without a lot of people in them.