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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.
RECOMMENDED HOTELS: Lima / Cusco / Machu Picchu / Sacred Valley / Arequipa / Puno / Huaraz / Nazca / Iquitos / Jungle Lodges. Weather in Peru. Peru's seasons are the reverse of those in the northern hemisphere. Summer in Peru is from December to February and winter from July to September. There's not a bad time to visit Peru, however as a very general recommendation the best time to visit the coast is during the summer (Dec-Feb) and the best time to visit the mountains is in the winter (Jul-Sept). The jungle is hot and steamy all year round with heavy rains in December and January.