Best Time to Visit Peru: Weather, Seasons & Month-by-Month Guide by Tom Shearman on 10th March, 2026 Peru: Weather and Season Travel Guide The best time to visit Peru is May to September, during the dry season in the Andes. This period offers clear skies, excellent trekking conditions, and ideal weather for visiting Machu Picchu, Cusco, and the Sacred Valley. However, the best time can vary depending on where you travel: Andes …