Tsum Valley Trek in December: Route Conditions and Planning

Morning frost coats the prayer wheels outside the stone houses of Chhekampar long after the winter sun rises over the Ganesh Himal range. Smoke drifts from low kitchen chimneys while villagers carry bundles of dry pine needles down the narrow stone alleys.

Most trekkers ask us if winter is a sensible time to visit this sacred hidden valley tucked beneath the Tibetan border. While the lower gorges remain sheltered, the upper reaches demand proper preparation for freezing winds and limited indoor heating.

What is the Tsum Valley like in December?

December delivers some of the clearest skies of the entire year across the Manaslu region. Daytime walking is generally pleasant when the sun shines directly into the canyon, though shadows fall quickly by mid-afternoon and temperatures plummet instantly.

Visitor numbers drop significantly after November ends. You will share the trails with local mule caravans and Buddhist pilgrims rather than large trekking groups. Monasteries like Mu Gompa remain open, though resident monks often spend the coldest weeks in lower winter quarters.

Can you trek Tsum Valley independently in winter?

Independent trekking is strictly prohibited in the Tsum Valley because it lies within a designated restricted border zone. Government regulations require all foreigners to travel with a licensed guide and obtain their permits through a registered local operator based in Kathmandu or Pokhara.

Attempting to bypass checkpoint stations such as the police post at Sirdibas results in heavy fines and immediate deportation from the trail. A registered guide also provides essential support if heavy frost or unexpected snow makes the stone staircases around Lokpa slippery.

What permits and paperwork are mandatory?

Securing permission to enter the valley involves several distinct documents that must be processed before your departure from Kathmandu. Because fee structures and local administrative costs change periodically, confirm the exact USD or NPR totals with your agency prior to booking.

• Tsum Valley Restricted Area Permit: USD 40 per person for the first 7 days, plus an additional daily rate thereafter.
• Manaslu Conservation Area Permit (MCAP): Required for all travelers entering the northern Gorkha region.
• Annapurna Conservation Area Permit (ACAP): Needed if you exit the circuit via Dharapani and the Annapurna foothills.
• TIMS Card or equivalent local registration managed through your licensed trekking agency.

How cold does it get at Mu Gompa and Chhekampar?

Temperatures vary dramatically between the lower gorge villages and the high-altitude plateau settlements. At Chhekampar, daytime highs hover around 5 degrees Celsius while nights drop well below freezing. Further up at Mu Gompa, thermometers regularly register minus 10 to minus 15 degrees Celsius overnight.

Water pipes in upper Tsum freeze solid by late afternoon in December. Teahouse owners melt ice and snow in large copper cauldrons for washing and cooking once the taps stop running.

Mantra Mountain Field Notes

Which lodges remain open during winter?

Many family-run teahouses in upper settlements close for the coldest months when local families migrate down to Kathmandu or lower river valleys. However, at least one basic lodge stays open in places like Chhekampar, Nile, and Rachen Gompa to accommodate porters, guides, and winter travelers.

Dining rooms feature a central iron stove fueled by dried yak dung or gathered wood. Guests gather closely around this single heat source each evening while eating dal bhat or noodle soup before retreating to unheated bedrooms.

How does Tsum Valley combine with the Manaslu Circuit?

The standard approach to Tsum Valley branches off the main Manaslu trail at Philim, heading northeast up the narrow gorge past Lokpa. After exploring Mu Gompa and the surrounding alpine basin, trekkers retrace their steps down to Lokpa and rejoin the primary route heading toward Samagaun and Larkya La pass.

Adding the Tsum Valley detour requires an extra 8 to 10 days on top of the standard 12-day Manaslu Circuit itinerary. In December, attempting the full combined route over Larkya La pass requires careful monitoring of snow conditions and high-altitude winds.

If heavy snow blocks the 5106-meter pass, guides will turn the group around safely rather than risking an impassable crossing. For standard itinerary structures and seasonal variations across different regions, explore our main trek page.