Moderate crowds are centred around surfing spots and in big cities with occasional loud festivals
It's still possible to "get lost" and enjoy the mountains just for yourself during the peak season
Based on social data we estimate crowdedness to be above average during this time period.
This time and area in Peru is probably the most crowded after Machu Picchu
You may get soaked and dirty due to the abundant rain and clay country roads, but this period has so many pros that will make you forget all about it