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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.
The Machu Picchu weather is dominated by the cloud formation caused by the shock between the highland colder winds and the humidity coming from the tropical jungle area. In general the weather in Machu Picchu knows two seasons; the wet and the dry season. The summer time is when there is more rain in the area.