Inca Trail in September

The Inca Trail in September marks the transition between the dry season and the early beginning of the rainy season in the Andes. This combination makes September a unique and highly favorable time to hike the famous route to Machu Picchu. The weather is still predominantly dry, the landscapes begin turning greener, crowds slowly decrease compared to the peak months of June, July, and August, and trekking permits become slightly easier to secure.
More info about: Inca Trail in June, Inca Trail in July and Inca Trail in August

This comprehensive guide covers everything you need to know about hiking the Inca Trail in September, including weather, trail conditions, altitude considerations, packing lists, preparation tips, advantages, disadvantages, and essential information for travelers planning their adventure.

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Hiking the Inca Trail in September

September is one of the most balanced months of the year for trekking:

• Weather remains mostly dry.

• Visibility is excellent.

• Crowds begin to thin out.

• Temperatures are milder than mid-winter months.

• The landscape becomes greener as humidity increases.

• Sunrise conditions at Machu Picchu remain clear.

Many travelers consider September the ideal month because it offers the beauty of the dry season without the overwhelming crowds typical of the previous months.

Weather on the Inca Trail in September

General Climate Overview

September is a transitional month. While it is still considered part of the dry season, light showers begin to appear in the afternoons toward the end of the month.

Expect:

• Mostly sunny mornings

• Mild afternoons

• Occasional light rain late in the month

• Warmer nights compared to July–August

Temperature Range

• Daytime: 18°C to 23°C (64°F to 73°F)

• Nighttime: 5°C to 9°C (41°F to 48°F)

• Early mornings: Cool but not freezing

Rainfall

• Early September: almost no rain

• Mid to late September: sporadic drizzle or light afternoon showers

• No heavy storms (those start in November–December)

Rain gear is recommended, but full waterproof winter equipment is not necessary.

Sun Exposure

UV radiation is still high. Trekkers should wear:

• Sunscreen SPF 50+

• UV-protective sunglasses

• A sun hat

What to Expect When Hiking the Inca Trail in September

1. Fewer Crowds

September feels calmer compared to high-season months. Campsites and viewpoints have more space, and the trail atmosphere is more relaxed.

2. Great Weather for Trekking

Mornings are fresh and clear, perfect for long hiking hours. Afternoon temperatures are comfortable.

3. Slight Chance of Rain

A light drizzle may appear toward the end of the day, especially near Wiñay Wayna and the cloud forest.

4. More Vegetation

The landscape begins transitioning from the brown tones of the dry season to greener, fresher colors.

5. Excellent Photography Conditions

Clear skies, soft sunlight, and greener valleys make September perfect for photos.

Difficulty of Hiking the Inca Trail in September

The Inca Trail retains its moderate to difficult classification throughout the year.

September is often perceived as one of the easiest months due to:

• Mild temperatures

• Dry mornings

• Good visibility

• Stable trail conditions

Major challenges include:

• High altitude

• Long hiking hours

• Steep stone staircases

Altitude Along the Inca Trail in September

Regardless of the month, altitude affects hikers. September’s mild weather makes acclimatization easier.

Key Elevation Points

• Cusco: 3,400 m

• KM 82: 2,700 m

• Dead Woman’s Pass: 4,215 m

• Runkurakay Pass: 3,950 m

• Phuyupatamarca: 3,600 m

• Machu Picchu: 2,430 m

Acclimatization Tips

• Spend 2–3 days in Cusco or Sacred Valley.

• Stay hydrated.

• Avoid heavy meals before the trek.

• Coca tea can help with mild symptoms.

Permits for the Inca Trail in September

Although September is not as competitive as June–August, permits still sell out quickly.

Booking Recommendations

• Reserve 4–6 months in advance.

• Group tours sell out first due to lower prices.

• Private tours may remain available longer.

Why Permits Are Limited

The Peruvian government caps the number of daily entries to:

• 500 people total

• Only 200–250 trekkers

• The rest are porters and guides

Permits are date-specific and cannot be changed or refunded.

Trail Conditions in September

Terrain

• Mostly dry

• Stone paths stable and safe

• Rare moments of mud in cloud forest zones

• Good grip on uphill and downhill sections

Water Sources

Streams run at normal levels. Your trekking agency will provide boiled or filtered water daily.

Wildlife

September offers good chances to see:

• Andean hummingbirds

• Llamas and alpacas

• Spectacled bears (rare but possible)

• Orchids in early bloom

Packing List for the Inca Trail in September

Clothing

• Lightweight trekking shirts

• Quick-dry pants

• Convertible pants/shorts

• Fleece jacket

• Warm layer for nights

• Compact rain jacket

• Hat for sun

• Buff or neck gaiter

Footwear and Equipment

• Waterproof hiking boots (well broken-in)

• Trekking poles

• Sleeping bag rated to –5°C

• Comfortable daypack

• Headlamp

• Reusable water bottle (1–2 liters)

Other Essentials

• Sunscreen SPF 50+

• Lip balm with SPF

• Insect repellent (for lower zones)

• Personal medications

• Camera or GoPro

• Snacks (nuts, chips, chocolate, granola bars)

Advantages of Hiking the Inca Trail in September

• Milder temperatures compared to July–August

• Fewer crowds

• Excellent sunrise conditions

• Greener landscapes

• Still part of the dry season

• Easier to book permits and hotels

Disadvantages of Hiking the Inca Trail in September

• Slight chance of afternoon showers

• Humidity increases toward the end of the month

• Clouds may appear during sunrise (less common)

• Some mosquitoes in cloud forest areas

Tips for Hiking the Inca Trail in September

1. Start Early Each Morning

Maximize sunlight hours and avoid any chance of late afternoon drizzle.

2. Keep a Light Rain Jacket Ready

Weather is mostly dry, but short showers can happen.

3. Train Before the Trek

Focus on endurance, leg strength, and stair climbing.

4. Use Trekking Poles

They help protect knees during long downhill sections.

5. Acclimatize Properly

Spend time in Cusco before starting to prevent altitude sickness.

6. Protect Yourself From the Sun

Even with mild temperatures, UV radiation remains strong in the Andes.

Alternative Treks if Inca Trail in September Is Fully Booked

Salkantay Trek (5 Days)

A high-altitude adventure, great weather in September.

More info about: Salkantay Trek 5 Days

Lares Trek (4 Days)

Cultural immersion through Andean communities.

More info about: Lares Trek 4 Days

Inca Jungle Trek (4 Days)

Includes biking, hiking, and zipline activities.

More info about: Inca Jungle Trek 4 Days

Choquequirao Trek

Excellent in September due to clearer skies and dry paths.

Frequently Asked Questions About the Inca Trail in September

Is September a good month to hike the Inca Trail?

Yes, one of the best months due to mild weather, fewer crowds, and excellent visibility.

Does it rain in September?

Light showers are possible toward the end of the month, but heavy rain is rare.

Are there fewer crowds compared to August?

Yes, the number of hikers drops significantly in September.

Is Machu Picchu clear in September?

Most of the month offers excellent visibility, especially in the mornings.

Do I need to book in advance?

Yes, but not as early as high season. A 4–6 month window is usually enough.

Is the Inca Trail dangerous in September?

No, trail conditions are dry and stable, making it a safe month for trekking.