Peru Weather & Best Time to Visit

Peru's highlands have two distinct seasons: dry season (May–October) and wet season (November–April). For the Inca Trail and Cusco, dry season offers the best trekking conditions, but every month except February has its advantages.

Month-by-Month Breakdown

Dry Season (May–October)

The most popular time to visit. Expect clear blue skies, strong sunshine, and cold nights. Daytime temperatures are comfortable for hiking (10–18°C) but nights can drop well below freezing at high camps. Rainfall is minimal, often just 5–10mm per month.

• Pros: Best weather, clearest views, driest trails, best photography conditions
• Cons: Highest demand for permits, most crowded trail, coldest nights
• Best for: Trekkers who want guaranteed good weather and don't mind booking 4–6 months ahead

Wet Season (November–April)

Morning skies are often clear, with rain arriving in the afternoon, typically 1–3 hours of showers. The landscape transforms into lush, vivid green. Cloud forests on Day 3 of the Inca Trail are particularly spectacular. The trail closes in February only.

• Pros: Fewer crowds, easier permit availability, lower prices, dramatic landscapes
• Cons: Afternoon rain, muddy trails, reduced visibility for mountain views
• Best for: Budget travelers, photographers seeking dramatic clouds, and those who couldn't get dry season permits

Microclimate Zones on the Inca Trail

The Inca Trail passes through multiple climate zones in just 43km:

• Day 1, Andean Valley (2,650–3,000m): Mild and dry. Warm during the day, cool at night. Similar to Cusco.
• Day 2, High Pass (3,000–4,215m): Exposed alpine terrain. Wind chill can make temperatures feel 10°C colder. Rain or hail possible even in dry season. UV intensity is extreme.
• Day 3, Cloud Forest (3,650–2,650m): Misty, humid, and green. This section is often wet even in dry season from cloud moisture (not rain). Expect muddy paths and slippery stone steps.
• Day 4, Subtropical (2,650–2,430m): Warmer and more humid near Machu Picchu. Early morning fog clears by mid-morning.

Sun & Wind at Altitude

At 4,000m+, solar radiation is 40–50% more intense than at sea level. Even on cloudy days, UV penetrates cloud cover. Critical precautions:

• Sunscreen: SPF 50+, reapply every 2 hours. Lips and ears are especially vulnerable.
• Sunglasses: UV400 or Category 3-4 protection. Snow blindness is possible at high passes.
• Hat: Wide-brimmed for sun; wool or fleece for warmth at high camps.
• Wind chill: At Dead Woman's Pass, a 20 km/h wind at 0°C feels like -7°C. A windproof shell layer is non-negotiable.

What to Pack

Year-Round Essentials

• Layered clothing (thermals, fleece, windproof shell)
• Rain jacket and rain cover for backpack
• Sun protection (SPF 50+, hat, sunglasses)
• Warm jacket for evenings and high passes
• Headlamp with extra batteries

Dry Season Additions

• Thermal base layers for sub-zero nights
• Warm sleeping layers (fleece pants, wool socks)
• Gloves and warm hat for pre-dawn starts

Wet Season Additions

• Waterproof hiking boots (not just water-resistant)
• Gaiters for muddy trails
• Extra dry socks in waterproof bag
• Quick-dry clothing throughout

Worst Time to Visit?

February is the only month to avoid. The Inca Trail closes for annual maintenance and restoration. January and March are the wettest months; while the trail is open, expect significant rain (120–150mm), muddy conditions, and potential trail closures due to landslides. If you must travel in January/March, consider the non-trekking train option to Machu Picchu instead.

Weather FAQ