One of the first questions potential travelers to Peru ask is what is the Best Time to Hike Machu Picchu?. The most popular months to trek the Inca Trail are May, June, July, August and September, when the weather is warm and visibility is at its best. However, the summer shoulder months; April and September are less busy, so walkers will have more time and space to enjoy the trail. In addition, the nights will be warmer and the route will be particularly pretty with more wild orchids en route. Make reservations 5 – 6 months in advance if you want to hike then. The trek is doable during the rainy season, but can become slippery and muddy by December and January. The trail closes for maintenance each February.