Due to its topography, the best time to visit Peru varies. The ideal time to visit the Andes and to trek the Inca trail is in winter (from April to October) as the weather is at its driest. June also hosts the annual Inti Raymi festival in Cuzco, a theatrical festival based on an ancient Incan ceremony in honour of the Sun God.
Meanwhile, visiting the Andes during its ‘green season’ from November to March has its advantages, with fewer visitors to compete with. If you are wanting to trek the Inca Trail, please be aware it is closed the entire month of February for conservation purposes.
The Peruvian Amazon is hot, humid and wet throughout the year, though August tends to have fewer mosquitoes.