Manaslu & Tsum Valley Trekking Update – 6 September 2026
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Manaslu Circuit Trek Update September 2026: Flooding, Route Conditions & Safety
Last Updated: 6 September 2026
If you are planning the Manaslu Circuit Trek or Tsum Valley Trek in September or October 2026, please read this latest update before travelling.
Recent heavy rainfall and flooding have affected parts of the Manaslu region, including areas around Chumnubri, Namrung and the Throng Khola. Infrastructure along some trekking routes has been damaged, and local authorities are assessing the situation.
Trekadviser is closely monitoring the conditions and will continue updating this page as new information becomes available.
⚠️ Current Status — 6 September 2026
Some sections of the Manaslu and Tsum Valley trekking routes have been affected by recent flooding and infrastructure damage. Trekkers should not attempt to cross damaged bridges or unsafe sections of the trail. Check the latest local and official information before starting your trek.
What Happened in the Manaslu Region?
Heavy rainfall during the monsoon period has caused flooding and landslides in several parts of Nepal, including the Manaslu region.
Early on 6 September 2026, around 3:30 AM, flooding affected the Chumnubri–Namrung area, with the Throng Khola and nearby infrastructure impacted by rising water.
A bridge in the Namrung area has also been reported as affected, creating additional challenges for trekkers and local communities using the route.
The situation in the Himalayas can change quickly during the monsoon and post-monsoon transition. Roads, trails and bridges may be damaged even when weather conditions appear to have improved.
For this reason, trekkers should follow the advice of local authorities and trekking professionals rather than relying only on conditions from previous days.
Is the Manaslu Circuit Trek Open?
The situation is not simply a matter of the entire Manaslu Circuit being open or closed.
Some sections may remain accessible while individual bridges, trails or settlements are affected.
The most important consideration is whether the specific section of the route you need to travel through is safe and accessible at the time of your trek.
If you are scheduled to travel soon, we recommend checking:
- Current trail conditions
- Bridge conditions
- Local government notices
- Manaslu Conservation Area updates
- Advice from your trekking agency or local guide
- Weather forecasts before departure
Never cross a damaged bridge or unstable section of trail simply because it appears passable.
What About the Tsum Valley Trek?
The Tsum Valley is also located within the wider Manaslu region and can be affected by the same weather systems, landslides and infrastructure problems.
Access to Tsum Valley can change depending on local trail and bridge conditions.
If you are planning a Tsum Valley Trek in September 2026, speak with your trekking agency before travelling toward the affected areas.
At Trekadviser, we will continue monitoring local conditions and provide updates as reliable information becomes available.
Should You Cancel Your Manaslu Trek?
Not necessarily.
If your trek is planned for late September or October 2026, there is still time for local authorities and communities to assess and repair damaged infrastructure.
The post-monsoon season is one of the most popular periods for trekking in the Manaslu region, but conditions can vary from year to year.
Instead of immediately cancelling your trip, consider keeping your itinerary flexible and maintaining regular communication with your trekking agency.
For trekkers arriving later in September, the situation may be significantly different from the conditions experienced immediately after the flooding.
Your safety should always come before completing a planned itinerary.
What Should Trekkers Do Now?
If you are travelling to Manaslu soon, we recommend the following:
1. Stay in contact with your trekking agency
Your local trekking agency can obtain information from guides, porters, local communities and authorities on the ground.
2. Do not cross damaged bridges
If a bridge has been damaged by flooding, wait for official confirmation that it is safe.
3. Allow flexibility in your itinerary
You may need an additional day or an alternative route depending on trail conditions.
4. Check weather conditions
Heavy rain can trigger additional landslides and flooding even after the initial incident.
5. Follow local instructions
If authorities advise trekkers to avoid a particular section, follow the recommendation.
6. Have a backup plan
If conditions prevent you from completing the Manaslu Circuit, your trekking agency should be able to discuss alternative trekking options.
Alternative Treks in Nepal
If conditions in the Manaslu region remain challenging, Nepal has many other spectacular trekking destinations.
Depending on current trail conditions, possible alternatives include:
Annapurna Circuit Trek
The Annapurna Circuit offers dramatic Himalayan scenery, diverse landscapes and high-altitude trekking, making it one of Nepal's best alternatives to Manaslu.
Everest Base Camp Trek
For trekkers looking for a classic Himalayan experience, the Everest Base Camp Trek remains one of Nepal's most famous routes.
Upper Mustang Trek
Upper Mustang lies in the rain-shadow region of the Himalayas and offers a very different landscape, culture and trekking experience.
Langtang Valley Trek
Langtang is another excellent option for travellers looking for a shorter Himalayan adventure closer to Kathmandu.
Always check current local conditions before selecting an alternative route.
Is Nepal Safe for Trekking After the Floods?
Nepal remains a major trekking destination, but safety conditions are highly location-specific.
Flooding and landslides can affect particular roads, bridges and trekking trails without making every trekking region unsafe.
This means travellers should not assume that conditions in one part of Nepal represent the entire country.
Before starting a trek, check the latest conditions for your specific destination and route.
Why Local Guides Are Important
A local guide is particularly valuable when trekking conditions are changing.
Experienced guides can communicate with local communities, understand changing trail conditions and help make decisions about whether a particular section is safe to cross.
In remote Himalayan areas, conditions can change much faster than information published online.
For this reason, we strongly recommend trekking with an experienced, properly equipped local guide.
What Happens Next?
Trekadviser is continuing to monitor the situation in the Manaslu and Tsum Valley regions.
Our team will provide further updates when reliable information becomes available regarding:
- Bridge repairs
- Trail accessibility
- Local government instructions
- Tsum Valley access
- Manaslu Circuit conditions
- Larke Pass accessibility
- Alternative routes
If you already have a Manaslu trek booked with Trekadviser, please stay in contact with our team before travelling. We will provide the latest information and discuss alternatives if conditions require changes to your itinerary.
Final Advice for Manaslu Trekkers
The Manaslu Circuit is one of Nepal's most spectacular trekking routes, but the Himalayas require flexibility and respect for changing conditions.
Recent flooding has affected parts of the region, and some infrastructure requires assessment or repair.
Do not take unnecessary risks to keep to a fixed itinerary.
If you are travelling later in September or October, conditions may improve significantly as the monsoon season ends. Continue monitoring updates and speak with your trekking agency before departure.
Safety comes first. The mountains will always be there.
Frequently Asked Questions
Is the Manaslu Circuit Trek open in September 2026?
Conditions are changing following recent flooding and infrastructure damage. Check the latest local information before starting your trek.
Is Manaslu safe after the recent flooding?
Some sections have been affected by flooding and infrastructure damage. Safety depends on the specific section of the route and current conditions.
Can I trek Manaslu in October 2026?
October is traditionally one of the best months for trekking in the Manaslu region. However, trekkers should check the condition of affected trails and bridges before departure.
Is Tsum Valley Trek currently accessible?
Access can change following flooding, landslides and bridge damage. Confirm current conditions with your trekking agency before travelling.
What should I do if my Manaslu trek is affected?
Contact your trekking agency and discuss the latest conditions, possible itinerary changes or alternative trekking routes.
About Trekadviser
Trekadviser is a Nepal-based trekking and adventure travel company specializing in Himalayan trekking, expeditions, peak climbing and responsible adventure travel.
Our team works with experienced local guides and field staff to provide travellers with up-to-date information and practical support throughout their journey.
Quality over Quantity — your fair, trustworthy and responsible travel companion.
Information source: Local field updates and official information from relevant authorities. Conditions in the Himalayas can change rapidly, so travellers should confirm the latest situation before departure.
Last updated: 6 September 2026
Stay informed. Stay flexible. Most importantly, stay safe.
Sources
- District Administration Office, Gorkha
- Manaslu Conservation Area Project (MCAP)
- Trekking Agencies' Association of Nepal (TAAN)
- Local authorities and trekking industry updates
- Local and national news reports
Last Updated: 6 September 2026
🙏 Thank you for your patience and understanding. We will keep you updated as the situation develops.
Trekadviser – Your Fair, Trustworthy & Responsible Travel Companion.