Cusco Weather by Month: Climate, Seasons and Packing Advice

What Is the Weather Like in Cusco by Month?

Cusco weather by month changes more in rain and night temperature than in daytime warmth. Afternoon highs sit around 67 to 71°F all year. Nights drop near freezing from May to August, then warm to the low 40s °F in the wet season, when monthly rainfall can top 5 inches.

Figures are rounded long-term averages for Cusco from published climate normals; individual years vary. For a live forecast, check a weather service a few days before you travel.

When Are Cusco's Dry and Rainy Seasons?

Cusco has a dry season from roughly May to September, with clear skies and very little rain, and a rainy season from roughly November to March, when afternoon showers and storms are common. April and October are transition months with mixed weather. Rain usually arrives in the afternoon rather than all day.

How Cold Does Cusco Get at Night?

Cusco can get close to freezing at night, especially in June and July when lows average around 30 to 31°F and frost forms on clear nights. Many older Cusco buildings lack central heating, so rooms feel cold. Temperatures can swing 35 to 40°F between a sunny afternoon and the early morning.

• Ask whether your hotel has heaters or extra blankets.
• Pack a warm hat and gloves for early starts.
• Expect cold, dark train and tour departures before sunrise.
• Layer up at sunset, when temperatures drop fast.

Why Is the Sun So Strong in Cusco?

The sun is strong in Cusco because the city is high and close to the equator, so there is less atmosphere to filter ultraviolet light. The UV index is often extreme even when air temperatures feel cool. Sunburn can happen quickly on clear dry-season days and through thin cloud.

• Use broad-spectrum sunscreen and reapply often.
• Wear a brimmed hat and sunglasses.
• Use lip balm with SPF in the dry air.
• Drink water regularly, since dry air and altitude dehydrate you.

Altitude affects more than sunburn; read our Cusco altitude guide for acclimatization tips.

How Does Cusco Weather Compare With Machu Picchu and the Sacred Valley?

Machu Picchu and the Sacred Valley are lower and warmer than Cusco. Machu Picchu, at about 7,970 feet on the edge of the cloud forest, is more humid and rainier, with milder nights. The Sacred Valley, around 9,000 feet, has warmer days and less frost, which is why some travelers sleep there.

Monthly conditions at the citadel are in our Machu Picchu weather guide.

What Should You Wear in Cusco?

Wear layers in Cusco year-round: a T-shirt or base layer for sunny afternoons, a fleece or sweater, and a warm or insulated jacket for mornings and evenings. Add a light rain jacket from November to March. Comfortable walking shoes matter on Cusco's steep cobblestone streets.

1. Start the day with a base layer, fleece and jacket.
2. Remove layers as the midday sun warms the city.
3. Carry a packable rain jacket in the wet season.
4. Wear a hat and sunglasses outdoors.
5. Add gloves and a warm hat for evening and early tours.

Our Machu Picchu packing list covers the rest of the trip.

Which Month Has the Best Weather in Cusco?

For dry, sunny weather, June to August are the most reliable months in Cusco, though nights are coldest and crowds are biggest. May and September offer similar sunshine with slightly milder nights and fewer visitors. February is the wettest, and the Inca Trail closes that month for maintenance.

Weather is only one factor; festivals, crowds and prices matter too. Compare everything in our best time to visit Machu Picchu guide and our Cusco Peru guide.

Prefer to have it all arranged? Alongside this Cusco Weather by Month guide, our Machu Picchu day trip from Cusco covers transport, tickets and a licensed guide.

Weather also shapes your day trips: see Sacred Valley stop Pisac and Machu Picchu in January for rainy-season planning, and adjust to the city with our Cusco altitude guide.