The Manaslu Circuit Trek is one of Nepal’s most spectacular and less-crowded trekking routes, circling the world’s eighth-highest mountain, Mount Manaslu (8,163 m). While the trek is renowned for its remote villages, dramatic Himalayan scenery, and rich Tibetan-influenced culture, climate and weather play a decisive role in shaping the trekking experience.
Understanding the weather conditions of the Manaslu Circuit Trek is essential for safety, comfort, and proper planning. The route spans subtropical river valleys to high alpine terrain, crossing the formidable Larkya La Pass at 5,160 meters. Because of this altitude variation, trekkers encounter multiple climate zones within a single journey.
This article provides a comprehensive overview of Manaslu Circuit Trek climate and weather, broken down by season, temperature patterns, rainfall, snowfall, and trekking suitability.
Overview of Manaslu Circuit Trek Climate
The climate of the Manaslu Circuit Trek is strongly influenced by altitude, topography, and Nepal’s monsoon system. Lower sections experience a temperate to subtropical climate, while higher elevations are characterized by alpine and nival conditions.
Key climatic features include:
- Large temperature variations between day and night
- Distinct seasonal weather patterns
- Cold, windy conditions at high passes
- Heavy monsoon rainfall in summer
- Snowfall at higher elevations in winter and early spring
Because the trail crosses remote and rugged terrain, weather conditions on the Manaslu Circuit Trek can change quickly, making preparation critical.
Spring Season (March to May)
Spring is one of the best seasons for the Manaslu Circuit Trek. During this period, the climate is stable, temperatures are moderate, and visibility is excellent.
Temperature in Spring
- Lower elevations (700–2,000 m): 10°C to 25°C
- Mid-elevations (2,000–3,500 m): 5°C to 15°C
- High elevations (4,000 m+): -5°C to 10°C
Days are generally warm and pleasant, while nights become colder as altitude increases.
Weather Conditions
Spring weather on the Manaslu Circuit Trek is mostly dry, with clear mornings and occasional afternoon clouds. Snow from winter may still linger at higher elevations, particularly near Larkya La Pass, but it is usually manageable.
Advantages of Spring Trekking
- Blooming rhododendron and alpine flowers
- Stable weather and low precipitation
- Excellent mountain views, including Mount Manaslu and Himlung Himal
Spring is ideal for trekkers seeking a balance of good weather and vibrant natural scenery.
Summer / Monsoon Season (June to August)
The monsoon season brings the most challenging weather conditions to the Manaslu Circuit Trek. Heavy rainfall dominates the lower and middle sections of the trail.
Temperature in Summer
- Lower elevations: 20°C to 30°C
- Mid-elevations: 15°C to 20°C
- High elevations: 5°C to 10°C
Although temperatures are warm, high humidity can make trekking uncomfortable.
Weather Conditions
- Frequent and heavy rainfall
- Cloud-covered skies and reduced visibility
- Slippery trails and muddy paths
- Increased risk of landslides and leeches in forested areas
Rainfall decreases somewhat in the rain-shadow areas closer to the Tibetan plateau, but reaching those sections requires crossing wet and unstable terrain.
Is Monsoon Trekking Advisable?
The Manaslu Circuit Trek during monsoon is not recommended for most trekkers. Poor visibility, safety risks, and logistical challenges outweigh the benefits, except for very experienced trekkers seeking solitude.
Autumn Season (September to November)
Autumn is widely regarded as the best time for the Manaslu Circuit Trek, offering the most reliable weather and optimal trekking conditions.
Temperature in Autumn
- Lower elevations: 10°C to 20°C
- Mid-elevations: 5°C to 15°C
- High elevations: -10°C to 10°C
Temperatures gradually decrease as winter approaches, but daytime conditions remain comfortable.
Weather Conditions
- Clear skies and excellent visibility
- Minimal rainfall after monsoon withdrawal
- Stable trail conditions
- Cool, crisp air at higher elevations
October, in particular, provides near-perfect weather for crossing Larkya La Pass.
Advantages of Autumn Trekking
- Spectacular Himalayan views
- Safe and predictable weather patterns
- Cultural festivals such as Dashain and Tihar in villages
Due to ideal weather, autumn is also the busiest season on the Manaslu Circuit, though it remains quieter than Everest or Annapurna regions.
Winter Season (December to February)
Winter presents the coldest and most demanding climate conditions on the Manaslu Circuit Trek.
Temperature in Winter
- Lower elevations: 5°C to 10°C
- Mid-elevations: -5°C to 5°C
- High elevations: -15°C to -20°C
Nighttime temperatures can drop significantly, especially above 3,500 meters.
Weather Conditions
- Frequent snowfall at high elevations
- Larkya La Pass often blocked by heavy snow
- Shorter daylight hours
- Very cold winds and icy trails
Winter Trekking Considerations
While lower sections remain accessible, crossing the high pass is often impossible. Only well-equipped, experienced trekkers should consider winter trekking on the Manaslu Circuit.
Temperature Variations and Altitude Effects
One defining feature of the Manaslu Circuit Trek climate is extreme temperature variation caused by altitude gain. Trekkers may experience warm afternoons and freezing nights on the same day.
Key points:
- Temperature drops approximately 6.5°C per 1,000 meters gained
- Wind chill significantly affects perceived temperature at high passes
- Proper layering is essential year-round
Understanding these variations helps trekkers prepare appropriate clothing and gear.
Best Time to Trek Based on Climate and Weather
From a climate and weather perspective:
- Best Seasons: Spring (March–May) and Autumn (September–November)
- Most Stable Weather: October and April
- Least Recommended: Monsoon (June–August)
- Most Challenging: Winter (December–February)
Choosing the right season ensures safer trails, better views, and a more enjoyable experience.
Conclusion
The Manaslu Circuit Trek climate and weather vary dramatically by season and altitude, making careful planning essential. Spring and autumn offer the most favorable conditions, combining stable weather, moderate temperatures, and stunning Himalayan views. Monsoon brings heavy rainfall and risks, while winter introduces extreme cold and snow.
By understanding seasonal weather patterns, temperature ranges, and climatic challenges, trekkers can choose the best time to experience this remarkable journey around Mount Manaslu. Proper preparation aligned with climate conditions transforms the Manaslu Circuit Trek into a safe, rewarding, and unforgettable Himalayan adventure.
