Discovering Humantay Lake in October is a unique experience that combines adventure, natural beauty, and climatic challenges. If you’re planning a trip to this Andean destination, this is a great time to enjoy its turquoise beauty, with cool weather and fewer crowds than in high season. Below, you’ll find everything you need to know: the weather, activities, what to pack, and the pros and cons of visiting during this month.
Weather at Humantay Lake in October
In October, Humantay Lake has cool and humid weather with occasional rain.
- Average temperature: 59°F (high of 64°F and low of 54°F)
- Rainfall: About 80 mm (3.1 inches) over 5 days
- Daylight hours: Approximately 12 hours and 23 minutes, with sunrise at 5:25 AM and sunset at 5:48 PM
Although there may be some rain, it’s not as intense as in the summer months, so October is still a good time to visit.

What to Do at Humantay Lake in October
There are several activities you can enjoy at Humantay Lake in October. Options include hiking or trekking, landscape photography, participating in cultural activities, and for some, even renting horses to make the ascent easier.
During the day, the sunlight enhances the lake’s turquoise color, making it the perfect time to capture stunning images.
The hike to the lake is manageable for those in good physical condition. Although some parts of the trail are steep, many visitors find the experience rewarding and full of moments that foster a connection with nature. Breathing the pure Andean air and observing the region’s flora and fauna makes every step worthwhile.
What to See at Humantay Lake in October
As you enjoy the hike, you’ll come across several unique features of this destination:
- The turquoise water color: It comes from glacial meltwater and suspended minerals, turning the lake into a natural mirror.
- High-mountain landscapes: Snow-capped peaks and expansive alpine meadows surround the lake, creating a dramatic visual contrast.
- Apachetas: These are small piles of stones placed as offerings to Pachamama (Mother Earth), an Andean tradition that adds a cultural element to your journey.
- Chance to spot Andean wildlife: You might see birds and small mammals adapted to high altitudes, adding richness to the experience.

What to Pack for Humantay Lake in October
To enjoy your adventure without setbacks, it’s essential to bring the right gear. Here are some must-haves:
- Layered clothing: October can be cool during the day and colder in the morning and evening. Pack T-shirts, sweaters, and a windbreaker jacket to adjust to temperature changes.
- Trekking shoes: Wear hiking boots or shoes with good grip to handle rocky and uneven paths.
- Sunscreen, sunglasses, and a hat: Even in cool weather, UV radiation at high altitudes is strong. Protect your skin and eyes.
- Rain poncho or waterproof jacket: October weather is generally favorable, but light drizzles can occur, so it’s wise to be ready for moisture.
- Water and energy snacks: Staying hydrated and fueled is key during the hike, especially since you’ll be climbing to 13,800 feet (4,200 meters) above sea level.
- Trekking poles: These help relieve pressure on your knees during the ascent and provide better balance on uneven terrain.
- Cash: Some local services or small vendors along the way may not accept cards, so it’s a good idea to bring some cash for unexpected expenses.

Pros and Cons of Visiting Humantay Lake in October
Visiting this destination in October comes with advantages and some disadvantages, which are important to consider before planning your trip.
Advantages
- Mild and pleasant weather: October brings cool weather, generally ideal for outdoor activities. Daytime temperatures between 59–64°F (15–18°C) make hiking more comfortable.
- Fewer tourists: Compared to the high season (June to August), October sees fewer visitors, offering a more peaceful and less crowded experience.
- Stunning landscapes: The soft autumn light and the water’s clarity make the lake’s turquoise color stand out, perfect for amazing photos.
- Good time to acclimate: Many travelers use October to acclimatize before doing longer hikes or tours in Cusco, helping reduce symptoms of altitude sickness.
Disadvantages
- Chance of occasional rain: Even though October is considered to have good weather, light rain on some days may affect visibility or make the trail more slippery.
- Temperature fluctuations: Mornings and late afternoons can be chilly, so packing and planning accordingly is essential.
- Risk of altitude sickness: Even if you’re acclimatized, hiking at 13,800 feet can still cause mild symptoms, especially with intense physical activity and no rest.
- Shorter daylight hours: Compared to summer, October has slightly fewer hours of sunlight, which may limit your time to enjoy the hike fully.
Frequently Asked Questions About Humantay Lake in October

1. What is the average weather at Humantay Lake in October?
In October, temperatures typically range between 54°F and 64°F (12°C to 18°C) during the day, with cooler mornings and evenings. There is some humidity and occasional light drizzles. Solar radiation is strong at high altitudes, so it’s important to use sunscreen to protect your skin.
2. What activities can you do at Humantay Lake in October?
October is a great time for trekking or hiking to the lake, taking photos, enjoying panoramic views, and observing the high-altitude flora and fauna. You can also rent horses for certain stretches to make the ascent easier and more comfortable.
3. What essential gear should you bring to Humantay Lake in October?
It’s essential to bring layered clothing, proper hiking shoes, sunscreen, sunglasses, a rain poncho or waterproof jacket, trekking poles, water, energy snacks, and cash. These items will help you be prepared for weather changes and the physical demands of the hike.
4. Is it recommended to visit Humantay Lake in October if you’re not acclimated?
It’s strongly recommended to spend at least two or three days in Cusco to acclimate before attempting the hike, since the altitude of 13,800 feet (4,200 meters) above sea level can cause mild symptoms of altitude sickness. This is important for both children and adults to fully enjoy the experience without issues.
5. Are there organized tours to Humantay Lake in October?
Yes, many tour agencies offer organized trips to Humantay Lake in October, including transportation from Cusco, experienced guides, and sometimes meals. These tours simplify logistics, ensure safety protocols, and provide cultural insights about the region.

Planning a visit to Humantay Lake in October means considering both the weather conditions and the benefits of visiting during a less crowded, naturally stunning time of year. With proper preparation and the right gear, you can enjoy this Andean gem safely and comfortably, making the most of every moment.
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