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The Dry Season (April â September) From mid-April through until the end of September is considered the dry season at Machu Picchu. Days are bright and sunny with daily average temperatures of 18 Â°C (64 Â°F), after sunset (around 6.15pm) temperatures drop down to around 10 â 12 Â°C (50 â 54 Â°F) and evenings are cooler.
It is also important to note that the mountains will not be closed at the same time to minimize the disruption caused. Huayna Picchu will be closed from 1-15 April 2016, and Machu Picchu mountain will be closed from 16-30 April.However the closure of one path will obviously put extra strain on the other.uayna Picchu will be closed from 1-15 April 2016, and Machu Picchu mountain will be closed from 16-30 April. However the closure of one path will obviously put extra strain on the other.