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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 best months to visit Machu Picchu are May to October. Generally in Machu Picchu it is hot during the day and cold at night. The tourist must be prepared, because the weather has fluctuations. The ideal thing is carry a backpack,a sweater of wool, a jacket. During the day the tourist can use a t-shirt and a comfortable pair of pants.