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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.
Rain falls throughout the summer, with the most precipitation coming in January and February. It's typically clear and dry in the mornings, with heavy rain falling in the afternoons. Roads to Machu Picchu can be closed at this time of year, due to flooding.