Manaslu Circuit Weather: Comprehensive Details

The Manaslu Circuit Trek, renowned for its remote trails and breathtaking views, offers trekkers a journey through the untouched beauty of the Nepalese Himalayas. One of the key considerations for anyone planning this trek is understanding the weather patterns along the route. The weather in the Manaslu region is highly variable and can significantly impact the trekking experience. In this blog, we will explore the comprehensive details of the Manaslu Circuit weather, including seasonal variations, temperature ranges, precipitation, and best times to trek.

Geographical Overview

The Manaslu Circuit in north-central Nepal encircles Mount Manaslu (8,163 meters), the eighth-highest peak in the world. The trek spans altitudes ranging from around 700 meters at Soti Khola to 5,160 meters at the Larkya La Pass. This wide range of elevations leads to diverse climatic conditions, from subtropical zones at lower altitudes to alpine and subalpine zones at higher elevations.

The Himalayan range significantly affects the Manaslu region's weather, creating microclimates due to its altitude and topography. The high peaks block cold winds from the north, while the rain shadow effect on the northern slopes results in drier conditions. Conversely, the southern slopes receive more precipitation during the monsoon season. The complex interplay of these factors leads to diverse weather patterns within the region, often varying significantly over short distances.

Here are some weather facts for reference based on averages. 

• January, the coldest month
• May, the warmest month
• July, the wettest month
• December, the driest month

Seasonal Weather Patterns

The weather along the Manaslu Circuit varies dramatically across different seasons. Let's delve into the details of each season:

Spring (March to May)

Spring is one of the most popular times to trek the Manaslu Circuit. The weather during this season is generally stable, with mild temperatures and clear skies.

• Temperature: In lower regions like Soti Khola and Jagat, daytime temperatures range from 10°C to 20°C (50°F to 68°F), while nighttime temperatures can drop to 5°C (41°F). In higher regions like Samagaun and Larkya La, daytime temperatures range from -2°C to 5°C (28°F to 41°F), with nighttime temperatures dropping to -10°C to -5°C (14°F to 23°F).
  
• Precipitation: Spring sees moderate precipitation, mostly occasional rain showers at lower altitudes and light snow at higher altitudes. The landscape is lush and vibrant, with blooming rhododendrons adding a splash of different colors (red, pink, and purple) to the trails.
  
• Wind: Wind speeds are generally low, with occasional gusts at higher altitudes, particularly near Larkya La Pass.

 

Preparation Tips

Clothing:

• Layering System: Use a layering system, including a moisture-wicking base layer, an insulating mid-layer (fleece or down jacket), and a windproof outer shell. This will allow you to adjust to varying temperatures.
• Lightweight Down Jacket: Useful for early mornings and evenings at higher altitudes.
• Trekking Pants and Shorts: Convertible pants are practical for changing temperatures.
• Rain Gear: A lightweight, packable rain jacket and rain pants are essential, as spring can have occasional rain showers.

 

Footwear:

• Trekking Boots: Waterproof, sturdy, and broken-in boots with good ankle support.
• Gaiters: Useful to keep mud and debris out of your boots.

 

Accessories:

• Sun Protection: Sunglasses, sunscreen (SPF 30+), and a wide-brimmed hat or cap to protect against strong UV rays.
• Trekking Poles: Useful for stability on uneven terrain.
• Daypack: To carry essentials like water, snacks, extra layers, and personal items.

 

Other Considerations:

• Hydration: Carry water purification tablets or a filter, as natural water sources may be present along the trail.
• Altitude Sickness: Be aware of the symptoms and acclimatize properly. Carry medication like Diamox if prescribed by a doctor.

 

Summer/Monsoon (June to August)

The monsoon season brings heavy rainfall to the Manaslu region, making it the least popular time for trekking. However, it can still be an adventurous choice for those who enjoy solitude and the lush green scenery.

• Temperature: Daytime temperatures range from 15°C to 25°C (59°F to 77°F) at lower elevations and 5°C to 10°C (41°F to 50°F) at higher elevations. Nighttime temperatures are relatively warm, rarely dropping below 5°C (41°F) at lower altitudes.
  
• Precipitation: The region experiences heavy rainfall, especially at lower elevations. This can lead to slippery trails, landslides, and swollen rivers, making trekking more challenging. In the high alpine regions, rain may fall as snow.
  
• Humidity and Visibility: High humidity and frequent cloud cover can reduce visibility, obscuring mountain views. However, the valleys are incredibly lush and vibrant during this season.

 

Preparation Tips

Clothing:

• Waterproof Gear: A high-quality, fully waterproof jacket and pants are essential. Ponchos can also provide additional coverage.
• Quick-Dry Clothing: Opt for moisture-wicking and quick-drying fabrics for base layers and shirts.
• Lightweight Layers: The temperature is warmer, so prioritize lightweight and breathable layers.

Footwear:

• Waterproof Boots: Sturdy and waterproof trekking boots are crucial to keep your feet dry.
• Gaiters: Essential for preventing mud and water from entering your boots.

Accessories:

• Rain Cover: For your backpack to save it from rain
• Insect Repellent: Mosquitoes and other insects are more common in the monsoon.
• Plastic Bags: To keep electronics and other items dry.

Other Considerations:

• Trekking Permits: Check for any trail closures or changes due to weather conditions.
• Route Information: Be aware of landslide-prone areas and be prepared for delays or changes in the itinerary.
• Health Precautions: Carry medication for waterborne illnesses and ensure proper hygiene.
  

Autumn (September to November)

Autumn is another best season for a Manaslu Circuit trek. By autumn, the monsoon rains will have cleared, leaving lush landscapes and clear skies behind.

• Temperature: Daytime temperatures range from 10°C to 20°C (50°F to 68°F) in the lower regions and -5°C to 10°C (23°F to 50°F) in the higher. Nighttime temperatures can drop significantly, especially at higher altitudes, ranging from -10°C to -5°C (14°F to 23°F).
  
• Precipitation: Autumn sees minimal rainfall, with clear skies offering stunning views of the surrounding peaks. Occasional snowfall may occur at higher altitudes as the season progresses.
  
• Wind: Calm winds at lower altitudes, with moderate winds at higher elevations, especially near Larkya La Pass.

 

Preparation Tips

Clothing:

• Layering System: Similar to spring, with a moisture-wicking base layer, insulating mid-layer, and waterproof outer layer.
• Warm Jacket: A down jacket for cold mornings and nights.
• Trekking Pants: Convertible pants or lightweight trekking pants are suitable.

Footwear:

• Trekking Boots: Comfortable, broken-in, and waterproof boots with good ankle support.

Accessories:

• Sun Protection: Sunglasses, sunscreen, and a hat.
• Trekking Poles: For added stability on steep ascents and descents
• Daypack: For carrying essentials.
  
  

Other Considerations:

• Acclimatization: Plan for proper acclimatization days to prevent altitude sickness.
• Crowds: Autumn is the busiest trekking season, so book accommodations and permits in advance.
• Hydration: Ensure access to safe drinking water by carrying purification tablets or filters.

 

Winter (December to February)

Winter trekking in the Manaslu region is for the adventurous, as the weather can be extremely cold and challenging.

• Temperature: At lower elevations, daytime temperatures range from 5°C to 15°C (41°F to 59°F), while nighttime temperatures can drop to -5°C (23°F). In higher regions, daytime temperatures range from -10°C to 5°C (14°F to 41°F), with nighttime temperatures dropping to -20°C (-4°F) or lower.
  
• Precipitation: Winter is the driest season, with low precipitation levels. However, snowfall is common at higher elevations, often leading to closed passes and difficult trail conditions.
  
• Wind: Strong winds, particularly at higher altitudes, can exacerbate the cold and create challenging conditions for trekkers.

 

Preparation Tips

Clothing:

• Heavy Insulation: A thermal base layer, thick fleece or down jacket, and a heavy-duty waterproof outer layer.
• Warm Accessories: A warm hat, gloves, scarf, or neck gaiter.
• Thermal Pants: To keep legs warm during colder nights.

Footwear:

• Insulated Boots: Waterproof and insulated trekking boots for warmth and protection.
• Crampons: Optional but recommended for icy sections.

Accessories:

• Extra Layers: Carry additional layers for extreme cold.
• Headlamp: With extra batteries for shorter daylight hours.
• Sleeping Bag: A winter-rated sleeping bag for cold nights.

 

Other Considerations:

• Trail Conditions: Be prepared for snow-covered trails and potential route changes.
• Emergency Supplies: Carry a first-aid kit, emergency blanket, and extra food supplies.
• Permits and Guidance: Consider hiring a local guide with experience in winter trekking conditions.

 

Altitude and Weather Variation

The altitude variation on the Manaslu Circuit leads to distinct weather changes within short distances. As trekkers ascend, temperatures drop significantly, and the likelihood of snowfall increases. You should prepare for sudden weather changes, especially at higher elevations.

Best Time to Trek the Manaslu Circuit

The best times to trek the Manaslu Circuit are spring (March to May) and autumn (September to November). During these seasons, the weather is generally stable, with clear skies, moderate temperatures, and minimal precipitation. These conditions offer the best visibility for enjoying the panoramic mountain views and make the trek more enjoyable. In addition, if you love celebrations, autumn is best for you as it is a festive season, with many festivals occurring during this time, such as Dashain, Tihar, Chhat, and Indra Jatra.

Conclusion

Understanding the Manaslu Circuit weather pattern is essential for planning a safe and enjoyable trek. Each season offers a unique experience, from spring's vibrant blooms to winter's solitude. Whether seeking clear mountain vistas or a quiet escape, being well-prepared and informed about the weather will enhance your trekking adventure in this stunning region. Should you decide to trek the Manaslu Circuit with us, we will check your luggage for weather compatibility, guide you through safe paths, and ensure a delightful trek experience.