How 2025 Snow & Rainstorms Are Reshaping Trekking in the Nepal Himalayas

What Caused the Recent Snowstorm and Rainfall in the Nepal Himalayas

In early November 2025, the Nepal trekking weather conditions were greatly affected by heavy snow and rain produced by an unusual combination of weather systems. The main contributor to this was Cyclone Montha, a storm that had developed in the Bay of Bengal and tracked north across India before losing strength. Even after losing strength, the cyclone's moisture moved north towards Nepal.

At this time, western disturbances that feature cold air and lower-pressure systems originating from the Arabian Sea, brought more moisture to the Himalaya region. When the two systems collided above Nepal, the atmosphere became saturated with moisture which would lead to heavier rain and snowfall. Subsequently, the moist air rose over the high mountains, cooled rapidly, and transformed into snowfall in the upper elevations while resulting in rain in the lower hills and valleys.

The Department of Hydrology and Meteorology in Nepal stated that the effects of Cyclone Montha and the western disturbance were the major causes of the significant rain and snowfall across much of the country. The storm that began around October 27 peaked between October 31 and November 1, and cleared the storm by November 2. During this time, trekkers in some of the most popular areas such as Manaslu, Annapurna, Mustang and Everest experienced high winds, persistent snowfall, and blocked trails.

This type of intense storm is not common for late October and early November, which is usually a dry and stable trekking season in Nepal. Meteorologists state that the changing climate is likely making extreme unpredictable weather more common. The warmer air can hold more moisture, and when that air goes over the cold peaks of the Himalaya range, it can create heavy snow quickly.

How the Snowstorm Impacted Trekking Routes Across Nepal

The 2025 snowstorm in Nepal Himalayas produced substantial rain and snow that shut down trekking routes spanning the country. In particular, it was reported that snow accumulation was about 12 to 13 centimeters around the Mustang area just south of Mukti Nath, which caused road and trail closures for several days. In the Manang district, the Department of Hydrology and Meteorology reported 64.4 mm of rain in Chame and 51.2 mm of rain in Jomsom in 24 hours, indicating just how widespread the rainfall was throughout the mid-hills and the valleys of the mountains.

Trekkers on popular routes such as Annapurna Base Camp, Manaslu Circuit, and Everest Region have had some of the toughest conditions in recent years. Heavy snowfall made trails slippery and passes, like Larke pass and Thorong La pass, too hard to cross. Flights to and from Lukla, the gateway to Everest, were delayed and canceled due to poor visibility and subsequent snow. Many trekkers described the heavy snowfall trekking Nepal experience as exceedingly unexpected and challenging, stating that trails were buried within a matter of hours.

Warnings were released by the Nepal Tourism Board and local officials in various provinces, including Gandaki, Lumbini, Karnali, and Sudurpaschim, for trekkers to delay planned high-altitude treks. The Annapurna Base Camp route was further temporarily closed until changes in conditions arose. Stranded trekkers were provided shelter and food in local teahouses and by local guides, and rescue teams organized support in the area.

Climate Change and Its Effect on Nepal’s Mountain Weather

The recent storms that brought snow and rain to many parts of Nepal make it abundantly clear that climate change in the Everest region and other mountainous areas of the Himalayas has already altered the conditions under which people trek. The weather patterns which previously followed a predictable course have started to become unstable, with rain and snow occurring in the dry pre-monsoon full trekking months, such as October and November.

Scientific research on climate change in the Himalayas has demonstrated that, on average, the Himalayas are warming at a rate faster than the global average temperature increase. The International Centre for Integrated Mountain Development (ICIMOD) suggests that the average rate of ice mass loss from glaciers in the Himalayas is about 0.28°C warmer per decade, and glacier melting in the Himalayas has had about 65% more ice mass lost compared to the late 20th century. In the Everest region, glaciers have lost about 13% of their surface area from 1961 to 2012, and the snowline continues to rise each year. And all of this has altered snow and rain patterns, resulting in more uncertain weather patterns in the high mountains.

The variety of tropical moisture produced by Cyclone Montha coupled with cold winds from the west collided with the higher Himalayas in spring 2025, inducing extreme snowfall levels at elevations beyond 3,000 meters. As climate change continues to disrupt the trend of decreasing weather patterns, climatologists explained that warm air can support significantly greater amounts of moisture, which subsequently results in heavy snow when transported vertically above freezing peaks in the Himalayas. Therefore, heavy snowfall events are now occurring nearly all year round, even outside the winter.

This phenomenon is evidence that trekking conditions in Nepal are changing. It is now becoming common for trailheads that had been open and dry in the autumn to all of a sudden close from snow; flights would be cancelled; crews would be told to avoid avalanche risks. Trekkers and guides are now increasingly concerned about potential risks. They are checking the weather consistently, altering itineraries, and packing enhanced winter gear, even when trekking has always been in spring or autumn.

Major Risks Trekkers Faced During the Recent Storm

Abrupt White Outs and Poor Visibility

Heavy snow and strong winds produced whiteout conditions on high-elevation routes including the Manaslu Circuit and Annapurna Base Camp, creating a challenging and dangerous environment for trekkers along with the increased risk of them getting lost.

Avalanche and Landslide Hazards

Fresh heavy snow, coupled with unstable slopes above 3000 meters, posed an avalanche risk. Lower down, persistent rain caused small landslides which blocked trails and roads.

Hypothermia and Frostbite

Many trekkers were unprepared for extreme cold temperatures. With the snowstorm of the Nepal Himalayas 2025 hitting, temperatures quickly plunged far below freezing exposing trekkers to hypothermia and frostbite especially if they got stuck outside or in remote teahouses.

Trail Blockages and Route Closures

Major trekking routes such as Annapurna Base Camp, Langtang Valley and Upper Manaslu were closed or impassable as a result of deep snow. Many groups ended up waiting for local authorities and rescue teams to open the paths.

Flight Cancellations and Supply Delays

Flights to and from mountain areas like Lukla, Jomsom and Pokhara were suspended due to bad visibility. This left trekkers stranded in remote villages and led to difficulties in getting food and other necessary supplies.

Communication Failures

Power and network outages during the storm made it difficult for trekkers to reach guides, agencies, or family members. Several remote valleys had no mobile signal for multiple days.

Health Emergencies at High Altitude

The storm caused trekkers to remain at altitude longer, increasing the risk of altitude sickness and dehydration. Having limited medical access decreased the chances of getting timely assistance.

Psychological Stress and Panic

Being isolated by difficult weather conditions increased mental stress and anxiety for trekkers, particularly those who were more inexperienced or who were not accompanied by local guides.

Safety Tips for Trekking in Bad Weather in Nepal

• Before you set out on your trek, it is always advisable to check for updates from the Department of Hydrology and Meteorology or from local and trusted sources. Mountainous weather can change rapidly, and daily check-ins are crucial.
• Avoid high passes or remote trails when the weather is unstable. If the weather forecast recommends heavy rain or additional snow, you will want to delay your starting time or select a different route.
• Another option is to prepare appropriately with winter gear, which should include a warm down jacket, waterproof boots, gloves, and a rain cover for your backpack. Proper winter gear can reduce the risk of cold-related injuries that can occur in an unexpected storm.
• Consider hiring an experienced local guide who knows where to find safe shelters or different routes. A guide's expert knowledge can go a long way in making a trek in bad weather safer and more manageable.
• Bring extra food, extra water or other drinks, and a power bank. Slow travel is typical in bad weather, so if you have to wait for conditions to improve, you will have supplies to keep you safe and comfortable.
• Be aware of altitude and condition. Any prolonged weather delays at high altitude can put you at a higher risk for altitude sickness, so you should only continue when you have hydrated and had adequate rest.
• Let your trekking company or hotel know your route and date of return. Being connected to rescuers will make it easier to relocate you in an emergency which is one of the best himalayan trekking safety tips.
• To prepare for high-altitude trekking principles, you should train prior, carry a first aid kit, and have travel insurance that covers evacuation insurance.
• Do not attempt to cross swollen rivers or steep snowy paths in rain or snow, if possible. Wait for safer conditions to proceed.
• If you encounter a storm, stay calm, find a safe place to shelter, and wait until conditions improve instead of trying to continue in low visibility.

How to Prepare for Future Treks in Unpredictable Himalayan Weather

If you've already planned a trek in Nepal, but weather has become unsettled, do not worry; you can be safe and enjoy your trip with adequate preparation.

First, monitor the weather forecasts by the Department of Hydrology and Meteorology and your trek organizers. Weather varies dramatically in the Himalayas, so be flexible in your schedule and be prepared to adjust travel to be on different dates or routes if necessary.

Be with all-weather gear even if your trek is in the autumn season. Plan to carry thermal gear, a waterproof jacket, gaiters, gloves, and reliable boots for snow and rain. If the weather happens to change to bad weather suddenly, having good gear is essential.

If you are not able to travel comfortably, consult with your trekking agency or guides for alternate plans. With your safety in mind, a well-experienced trekker may be familiar with lower altitude trails that are safer, or shorter circuits to divert snow or rain from stormy passes.

Be certain your travel insurance in any event includes delays or cancellations due to weather or any emergency evacuation for coverage. With this coverage, you can travel and be assured that you are safe in the event of severe weather or an alternative plan.

Stay updated and stay calm during your journey. If there are forecasts for deteriorating or worsening weather, do not try to rush or push through dangerous conditions - find a spot, a teahouse or shelter, and wait safely. Flexibility, preparation and communication are the best ways to enjoy trekking in an unpredictable area like the Himalayas, and Nepal itself.

New Opportunities and Changing Trends in Nepal Trekking

As climate change continues to create unpredictable weather patterns in Nepal, new trends and opportunities are developing in the country’s adventure tourism sector. Trekkers are seeking out different times of year and different regions, creating more of a culture of flexibility and year-round trekking in Nepal.

One new trend is the increasing popularity of lower-altitude treks, such as the Pikey Peak Trek in the Solu region. These trekking routes provide incredible views of the Himalayas, while remaining safely below the heavy snow line and preserved for enjoyment during periods of unstable weather in the mountains. During precipitation periods, many trekkers are now embracing trekking routes travelling through lower-altitude regions, as opposed to trekking higher and riskier itineraries like Everest Base Camp or the Manaslu Circuit.

Local trekking agencies have been adjusting as well, designing itineraries smart of weather conditions (weather-smart), allocating several days in the itinerary for flexibility, and using real-time weather updates. More lodges are now being constructed or enhanced in lower-altitude areas to provide safe accommodations during inclement conditions. This development permits trekkers to remain comfortable and informed about the weather, but also supports local communities through housing in storms, as opposed to carrying on until receiving news of a change in weather.

Similarly, climate awareness is developing new travel habits. Trekkers are discerning increasingly about climate change and now seek sustainable, responsible experiences that contribute to local capacity to adapt to changing mountain climates.

FAQs

Is it safe to trek in Nepal after the recent snowstorm?

Generally, trekking in Nepal is safe once conditions return to normal and the trails are cleared of snow. Usually, local authorities and trekking companies inspect and reopen routes once the conditions stabilize. Trekkers should always check the latest Nepal trekking weather conditions and travel with guides who know about the trails before setting out.

Which trekking regions in Nepal were most affected by the snowstorm?

The areas hardest hit by the recent Nepal Himalayas snowstorm 2025 were the Manaslu Circuit, Annapurna Base Camp, and Langtang Valley. Heavy snow also affected parts of the Everest region and Dolpa, and high-altitude routes were temporarily closed due to the snow and reduced visibility.

When is the best time to trek in Nepal to avoid heavy snowfall or rain?

Traditionally, the best trekking conditions in Nepal were October to early December and March to May, as these timeframes tended to provide stable weather and clear skies. Unfortunately, because of climate change, even during these months, you can still receive unexpected snow or rain. Therefore, it is now sensible to stay up to date on short-term forecasts and allow some buffer days in your itinerary to be flexible.

What should trekkers do if bad weather hits during their trek?

If bad weather develops, just stop trekking immediately and find shelter in a teahouse or village nearby. Do not attempt to cross high passes or exposed trails when snow, rain, thunder, and lightning are happening. Stay in contact with your agency or guide and wait for a change in conditions. Having the appropriate winter gear and some extra food can make a huge difference if you are delayed.

 How are local communities coping with frequent weather changes?

In mountainous communities, they are adjusting to these changes and are improving local infrastructure, building up lodges, and stocking emergency supplies. Today's trekker's villages are also working more closely with trekking agencies and local authorities to provide real-time weather updates and action plan for those stranded in storms.

Can climate change increase snowstorms and avalanches in Nepal?

Yes. Scientists say climate change in the Himalayas has created increasingly unpredictable weather. Warmer air temperature holds more moisture, which can create unexpected heavy snow, precipitation, and increased chance of avalanches. The 2025 snowstorm is one specific example of how changing global weather patters have directly impacted Nepal's mountains.

Do I need special travel insurance for trekking in Nepal?

Yes. Be sure that you are covered for high-altitude trekking and cancellations due to weather conditions. Regular travel insurance does not cover this type of travel or weather issues and does not provide coverage for helicopter evacuation, if needed. Be sure to check your coverage before your trip.

Conclusion

The recent snow storm in the Nepal Himalayas in 2025 shows just how unpredictable the trekking weather patterns in Nepal can become. Even during the best trekking months, heavy snow and rain can disrupt trekking on the trails in the Annapurna, Manaslu, and Everest regions. However, if proper precautions are taken, trekking in Nepal remains safe and rewarding. Monitoring weather updates regularly, having the proper cold and rain gear, and trekking with experienced local guides will facilitate a safe and enjoyable experience on the trails.

Lower elevation treks like the Pikey Peak Trek, are becoming increasingly popular for those looking for a trekking experience that has lower risk and more flexibility. These lower elevation treks provide some of the most beautiful views of the Himalayas while avoiding the higher elevation risk associated with snow and wind. 

Before heading out on your trek, please ensure that you have purchased good travel insurance before departure, keep monitoring local conditions, and plan accordingly. For sound guidance and support, consider contacting us at Himalayan Recreation. Our trained expedition team will help you to plan a safe and enjoyable trekking experience in Nepal.