Machu Picchu weather by month, from the official climate normals

Month by month (average high / low, rain)

• January: 21 °C / 12 °C, 341 mm of rain — one of the three wettest
• February: 21 °C / 12 °C, 325 mm of rain — Inca Trail closed all month
• March: 21 °C / 12 °C, 341 mm of rain — one of the three wettest
• April: 22 °C / 12 °C, 184 mm of rain — transition, rain easing
• May: 22 °C / 11 °C, 73 mm of rain — dry season begins
• June: 22 °C / 10 °C, 51 mm of rain — driest month
• July: 22 °C / 9 °C, 54 mm of rain — coolest nights
• August: 23 °C / 10 °C, 61 mm of rain
• September: 23 °C / 11 °C, 76 mm of rain — warmest days
• October: 23 °C / 12 °C, 163 mm of rain — transition, rain returning
• November: 23 °C / 12 °C, 173 mm of rain
• December: 21 °C / 12 °C, 275 mm of rain

How the weather changes the ticket to book

• Rainy months and steep routes: Huayna Picchu and the Mountain climb on stone steps that get slippery when wet, and the trail can close on days of heavy rain. From November to March, a 2 h 30 route like 2A is the safer bet.
• Dry months and the views: May to September gives the clearest views from the platforms and summits, and it is also when most people go. Book Huayna Picchu and the Mountain first.
• February: The Inca Trail closes for maintenance all month; Machu Picchu itself stays open and you reach it by train.