If you dream of discovering one of the most stunning landscapes in the Andes, Humantay Lake in September is an excellent option. This month offers ideal conditions for exploring nature and enjoying breathtaking views. Below, we present everything you need to know to visit this beautiful destination safely, comfortably, and well-prepared. Find out about the weather at Humantay Lake in September, the advantages and disadvantages of traveling in this month, and get answers to your most common questions so that your experience is truly unforgettable.
Humantay Lake is located in the Cusco region, Peru, at an altitude of over 4,200 meters above sea level, amidst the majestic Andes mountain range. This lake is famous for its spectacular turquoise color, formed by the melting of nearby glaciers and the reflection of sunlight. During September, the weather in the area is relatively dry and cool, making it the ideal time to hike to the lake and enjoy stunning landscapes. Below, we tell you everything you need to know to plan your visit safely and well-prepared.

Weather at Humantay Lake in September
The weather at Humantay Lake during September is among the most favorable of the year. With few rainy days compared to other months, it’s easier to enjoy clear skies that highlight the lake’s beautiful turquoise color.
- Precipitation: In September, around 49 mm of rain is recorded, spread across only three days. This means that most of the month is dry, ideal for hiking.
- Temperatures: The average maximum temperature is 17°C, and the minimum is around 11°C, with an average of 14°C. Although it’s cool, with the right clothing, you can enjoy the hike without any issues.
- Daylight: There are about 12 hours of sunlight per day. The sun rises around 5:45 a.m. and sets at 5:46 p.m., giving you plenty of time to hike and take photos of the scenery.
- Wind and altitude: At more than 4,200 meters in elevation, the wind can be moderate or strong, so it is advisable to dress in layers and bring a windproof jacket to stay warm during the ascent and at the summit.

Advantages of Visiting Humantay Lake in September
- Stable and dry weather: In September, it rarely rains, making the trail less slippery and easier to walk. It also allows for better views of the landscape, as there are fewer clouds and fog.
- Pleasant temperatures: Although it’s a bit chilly, you can be comfortable if you wear layered clothing (such as a T-shirt, fleece, and a jacket). During the day, the weather is cool, but the hike is enjoyable, especially in the morning and evening.
- Fewer tourists: In September, there are fewer visitors compared to the months of June, July, or August, so you can enjoy a quieter, more relaxed atmosphere, especially at the beginning or end of the month.
- Spectacular views: The sky is usually clear, allowing a clear view of Humantay Glacier, the surrounding mountains, and of course, the lake with its bright turquoise color. It’s an excellent month for taking beautiful photos and connecting with nature.
Disadvantages of Visiting Humantay Lake in September
- Unexpected weather changes: Although September is mostly dry, the weather in the mountains can change suddenly. Sometimes, drizzles or showers may occur, so it’s important to bring a rainproof jacket or poncho just in case.
- Strong winds at the summit: The lake is located at more than 4,200 meters above sea level, and this area can experience strong winds, especially at the end of the hike. This can make the trail more challenging if you’re not properly dressed.
- Cold in the early morning and evening: During the early hours of the day or at dusk, the temperature can drop significantly. It is essential to bring warm clothing, such as a hat, gloves, and a thick jacket, to avoid feeling cold or getting sick.
- Altitude sickness (soroche): At this altitude, some people may experience symptoms such as headaches, dizziness, or nausea. Therefore, it is recommended to spend at least two days in Cusco before ascending, drink plenty of water, and walk slowly to avoid problems.

Recommendations for Visiting Humantay Lake in September
To ensure that your experience at Humantay Lake is safe, comfortable, and memorable, follow these recommendations:
- Acclimatization: Spend at least one or two days in Cusco before the hike so your body can adjust to the altitude and reduce the risk of altitude sickness. During this time, rest and stay well-hydrated.
- Layered clothing: The weather on the mountain changes quickly. Wear layered clothing: a T-shirt, a sweater, and a windproof or waterproof jacket. Also, bring a hat, gloves, and scarf, as it gets quite cold in the morning and evening.
- Sun protection: Although the weather is cool, the sun at high altitudes is very strong. Use sunscreen, sunglasses, and a hat or cap to protect your skin and eyes from the harsh sun.
- Proper footwear: Wear hiking boots with non-slip soles. This will help you walk safely on the dirt and stone paths and also keep your feet dry if it rains a little.
- Hydration and food: Bring enough water and energy snacks. Hydration is essential at high altitudes, and having light foods like fruit, energy bars, or nuts will help maintain your energy during the hike.
- Physical preparation: It is important to be in good physical shape to hike up to the lake. If it seems too difficult, you can rent a horse in Soraypampa, which makes the ascent easier and more comfortable.
- Additional equipment: Bring a light backpack, a basic first-aid kit in case you experience any discomfort, and, if desired, trekking poles, which will help maintain your balance while walking.
Frequently Asked Questions About Humantay Lake in September

1. Is it safe to visit Humantay Lake in September?
Yes, visiting Humantay Lake in September is safe if you take the proper precautions. Acclimate in Cusco a few days before, wear appropriate clothing for the cold and wind, and stay hydrated to avoid altitude sickness.
2. What is the difficulty of the hike to Humantay Lake?
The hike has a moderate level of difficulty. Although the trail is relatively short (between 1 and 2 hours of ascent), the altitude and slopes can be challenging, especially for those not used to this type of effort. It’s recommended to take breaks, and if you start feeling unwell, descend to a lower altitude.
3. What type of clothing should I bring for the visit to Humantay Lake in September?
It’s recommended to dress in layers due to the varying temperatures. Bring T-shirts, sweaters, and a windproof or waterproof jacket. Don’t forget accessories like a hat, gloves, and scarf for the cold mornings and evenings. Also, bring sunscreen and sunglasses to protect yourself from the sun.
4. Should I bring special gear for the hike?
Yes, in addition to layered clothing, it’s important to bring hiking boots with good traction, a light backpack with water and snacks, a small first-aid kit, and, if preferred, trekking poles to help maintain balance on uneven terrain.
5. Is it possible to visit on my own, or is it better to go with a tour?
You can go on your own, but hiring a tour is recommended. Organized tours include transportation, a professional guide, and sometimes meals, which makes logistics easier and enhances safety, especially if you’re not familiar with the area or the route.
6. What should I do if I experience altitude sickness during the hike?
Altitude sickness is a common risk in high-altitude areas. If you experience headaches, nausea, or dizziness, it’s crucial to take a break, drink water, and descend to a lower altitude. Bringing preventive medication and drinking coca tea can help. Be sure to be well acclimated before ascending to reduce risks.
7. How many hours does the visit to Humantay Lake last?
A complete excursion to Humantay Lake, including transportation from Cusco, the hike, and time at the location, usually lasts between 10 and 12 hours. This gives you enough time to enjoy the scenery and take breaks when needed.

Traveling to Humantay Lake in September offers an ideal combination of stable weather, vibrant colors, and fewer tourists compared to peak season. With moderate temperatures and little precipitation, September is the perfect month to enjoy the beauty of this destination without the complications of heavy rainfall. However, it’s essential to prepare properly, acclimate in Cusco, dress in layers, and bring the necessary equipment to handle the altitude and possible unexpected weather changes.
If you follow these recommendations, you’ll have a unique experience in one of the most incredible and sacred Andean landscapes in Peru. Don’t forget that Humantay Lake is not just a tourist destination but also a place of spiritual connection for local communities, adding cultural and mystical value to the adventure. Book with Travel Peru Agency today and secure your spot.
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