The short answer
- April to May and September to October are the best months: dry, green after the rains, and without the June–August peak.
- June to August is the driest and sunniest, and also the busiest and most expensive. Nights drop close to freezing.
- November to March is the wet season — afternoon downpours, low cloud, lush landscapes and far fewer visitors.
- February is the one month to avoid if you can: the heaviest rain, the highest landslide risk, and the Inca Trail closed for maintenance.
The two seasons
Dry season — May to September
Clear mornings, strong sun, almost no rain and cold nights that can touch zero in June and July. This is the postcard weather, and everyone knows it: expect full trains, booked-out hotels and higher prices from mid-June through August.
Wet season — November to March
Mornings are frequently clear and the rain tends to arrive in the afternoon. The valley turns brilliantly green, the sites are quiet and prices soften. The trade-offs are mud, occasional landslides on the railway, and cloud that can hide Machu Picchu entirely.
Shoulder — April and October
The sweet spot. April has the green of the wet season with most of the rain gone; October is dry, warm and still uncrowded before the year-end rush. Both give you the best light of the year for photography.
Month by month
Daytime highs are remarkably stable year-round at this latitude — it is rainfall and night-time cold that change. Temperatures are typical values for the town at 2,792 m.
| °C | ☔ | 👥 | ||
|---|---|---|---|---|
| January | 20 °C / 8 °C | Very wet | Very quiet | Green and dramatic; Bajada de Reyes on the 6th. |
| February | 20 °C / 8 °C | Wettest | Quietest | Inca Trail closed all month; highest landslide risk. |
| March | 20 °C / 8 °C | Wet | Quiet | Rain easing by month end; landscapes at their greenest. |
| April | 21 °C / 6 °C | Occasional | Moderate | Excellent — green valley, mostly dry, few crowds. |
| May | 21 °C / 3 °C | Dry | Moderate | Arguably the best month of the year. Nights turn cold. |
| June | 20 °C / 1 °C | Dry | Busy | Cold nights, brilliant days; Inti Raymi on the 24th. |
| July | 20 °C / 0 °C | Driest | Busiest | Peak season. Book everything well ahead. |
| August | 21 °C / 2 °C | Dry | Busiest | Still peak; windy on the plateau at Moray and Chinchero. |
| September | 21 °C / 5 °C | Dry | Moderate | Crowds thin out, weather still reliable. Very good value. |
| October | 22 °C / 7 °C | Occasional | Moderate | Warm, clear mornings and the first green returning. |
| November | 21 °C / 7 °C | Showers | Quiet | Rains beginning; still plenty of usable dry days. |
| December | 20 °C / 8 °C | Wet | Busy at Christmas | Wet but festive; prices spike over the holidays. |
Crowds and how to dodge them
- The archaeological site is emptiest at opening (07:00) and after 16:00. Cusco coach tours arrive between 10:00 and 14:00 without fail.
- Machu Picchu entry slots for June to August sell out two to three months ahead; outside those months a few weeks is usually enough.
- Sunday is Chinchero market day and busier there; Monday is quieter valley-wide.
- Sleeping in Ollantaytambo rather than Cusco is the single most effective crowd-avoidance tactic available.

