Humantay Lake, with its dazzling turquoise waters and location at the foot of snow-capped Salkantay, is one of Cusco’s most beautiful natural attractions. However, its altitude of approximately 4,200 meters above sea level (13,780 feet) exposes it to extreme, changeable, and cold Andean weather.
Understanding seasonal weather patterns is essential for planning your visit and ensuring a safe and enjoyable experience.
I. General Climate Characteristics
The climate in Humantay is defined by two main factors: the altitude and the seasonal division of the southern hemisphere (dry season and rainy season).
| Feature | Description |
| Altitude | 4,200 m.s.n.m. |
| Daytime Temperatures | They range between 5°C and 15°C (41°F – 59°F). |
| Nighttime Temperatures | They can drop to -5°C (23°F), especially in the dry season. |
| Solar Radiation | Extreme throughout the year, due to the altitude. |
II. Dry Season (Best Time): April to October
This is the most popular season to visit Humantay Lake, thanks to its more stable weather conditions.
Prevailing Conditions:
- Days: Predominantly clear and sunny skies, which enhance the intense turquoise color of the lagoon for photography.
- Temperatures: Daytime temperatures are pleasant, but as soon as the sun goes down or clouds appear, it gets very cold.
- Precipitation: Minimal rainfall. The probability of rain is significantly reduced.
Key Tips for the Dry Season:
- Sun Protection: UV radiation is at its highest. Use high SPF sunscreen, a hat or cap, and polarized sunglasses.
- Acclimatization: Although the climate is favorable, the altitude requires adequate prior acclimatization in Cusco or the Sacred Valley.
- Layers: It is essential to wear a windbreaker or fleece jacket, as the wind chill can be very cold at the summit.
III. Wet Season (Rainy Season): November to March
The rainy season is characterized by more unpredictable weather and higher humidity.
Prevailing Conditions:
- Days: Increased cloud cover. Mornings are usually clear, with rain concentrated in the afternoons. January and February are the months with the highest rainfall.
- Temperatures: Temperatures are slightly warmer overall than in the dry season, but the humidity makes it feel colder.
- Precipitation: Heavy showers and even hail or light snow can be expected at the summit. This can make the trekking trail muddy and slippery.
Key Tips for the Wet Season:
- Waterproof gear: It is mandatory to wear a high-quality waterproof jacket and pants.
- Footwear: Waterproof hiking boots with excellent grip for muddy conditions.
- Visibility: Cloud cover can affect visibility of the Salkantay snow-capped mountain; however, the low number of tourists at this time of year offers a more peaceful experience.
IV. Volga Tours Clothing Recommendations (Applicable All Year Round)
Since mornings are freezing and midday can be warm, we recommend following the three-layer technique:
- Base layer: Merino wool or synthetic thermal clothing to keep the body dry.
- Middle Layer: A fleece lining for thermal insulation.
- Outer Layer: A windproof and waterproof jacket.
- Accessories: Gloves, wool hat, thick trekking socks, and a daypack to store any layers you take off.
Conclusion: The best time to ensure clear skies and the most vibrant colors of the lagoon is during the dry season. However, with the right protective gear, visiting during the wet season is also possible and offers a different perspective of the Andean landscape. Plan with Volga Tours for a safe and weather-optimized itinerary.