Cusco's high-altitude Andean climate divides clearly into two distinct seasons — a dry season (May to October) and a wet season (November to April). Unlike coastal Peru, the seasons here are defined not by temperature but by rainfall, and they profoundly affect which activities are possible and how comfortable your visit will be. For most visitors — especially those planning to trek the Inca Trail, visit Machu Picchu, or explore the Sacred Valley — the dry season is the best time to visit Cusco.
Peak Season: June to August (Dry Season Peak)
June through August represents Cusco's busiest and most popular period. The dry season is in full swing, bringing clear skies, brilliant sunshine, and cold nights (temperatures can drop to 0–2°C at night, while days reach 18–20°C). The landscapes are dramatic — snow-capped peaks gleaming against blue skies, the Andean altiplano at its most photogenic.
This is the best period for trekking the Inca Trail and all other mountain routes around Cusco. Machu Picchu sees its heaviest visitor numbers and the ruins can be crowded, but the weather is reliably dry and the site is at its most accessible. Inca Trail permits for June, July, and August sell out within hours of going on sale each January — book trekking permits immediately when they open.
The peak is also festival season. Inti Raymi (Festival of the Sun) on June 24 is the year's most spectacular celebration, drawing thousands of visitors to Sacsayhuamán for an elaborate re-enactment of the ancient Inca winter solstice ceremony. The preceding days feature processions, traditional music, and colorful ceremonies throughout the city. Accommodation must be booked months ahead.
Shoulder Season: May and September–October
May and the September–October period offer an excellent compromise — the dry season at its most pleasant without the extreme crowds and prices of peak summer. May is particularly magical: the wet season has just ended, leaving the landscapes intensely green and lush, wildflowers blooming across the Sacred Valley, and significantly fewer tourists at Machu Picchu and Inca Trail sites. October sees similar conditions as the dry season approaches its end.
These months offer the best value: hotel prices are lower than June–August but the weather remains excellent for trekking and sightseeing. Inca Trail permits, while still needing advance booking, are more available than peak months. Many experienced Peru travelers consider May and September to be the sweet spot for a Cusco visit.
Wet Season: November to April
The wet season brings afternoon and evening rains — often heavy thunderstorms — from November through April. February is the wettest month, and the Inca Trail is completely closed throughout February for path maintenance and repair. Machu Picchu remains open year-round but the site is frequently shrouded in mist and cloud, and the access road can occasionally be closed by landslides.
That said, the wet season is not without appeal. Crowds are significantly reduced, hotel prices drop by 30–50%, and the Andean landscape is intensely green and alive. Morning visits to Machu Picchu often have clear weather before afternoon clouds roll in. Budget travelers willing to accept some weather uncertainty can find exceptional value November through January, before the heaviest rains arrive in February and March.
Importantly, visiting Machu Picchu during the wet season often means misty, atmospheric photos with far fewer people — many photographers prefer the moody cloud forests of this period to the clear but crowded dry-season conditions.
Weather Overview
- May–October (Dry Season): Days 16–20°C, nights 2–8°C. Clear skies, cold nights, minimal rain. Best for trekking and outdoor activities.
- November–April (Wet Season): Days 17–19°C, nights 6–10°C. Daily rainfall, particularly in afternoons. Lush landscapes, heavy February rains.
- February: Wettest month; Inca Trail is closed. Machu Picchu open but often misty.
- June–August nights: Can drop below freezing at higher altitudes — pack warm layers for early morning Machu Picchu visits and mountain excursions.
Key Events and Festivals in Cusco
- Inti Raymi — Festival of the Sun (June 24): Peru's most spectacular festival. Thousands of performers in Inca costume re-enact the ancient ceremony at Sacsayhuamán. Celebrate the winter solstice with the entire city.
- Corpus Christi (June, variable): One of Cusco's most important Catholic celebrations. Statues of 15 saints are carried in elaborate processions through the city, meeting at the Cathedral in a stunning spectacle of colonial religious art.
- Cusco Week (June 23–29): A full week of celebrations around Inti Raymi including local markets, music festivals, parades, and cultural events. The city is at its most festive.
- Qoyllur Riti (May–June, pre-Corpus Christi): An ancient pilgrimage to a glacier on Mount Ausangate at 4,700m — a unique fusion of Andean and Catholic traditions attended by thousands of indigenous pilgrims in elaborate costumes.
- Santurantikuy Market (December 24): One of South America's largest Christmas markets, filling the Plaza de Armas with nativity scene figurines, toys, crafts, and food — a centuries-old Cusco tradition.