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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.
Machu Picchu Weather. May through October: The winter in the Southern Hemisphere is also the dry season, which means it's usually the best time to visit Machu Picchu. Temperatures are quite comfortable, with the highs in the 80s and lows in the high 40s, though the temperature can drop to freezing in some cases.