The Chadar Trek only runs for a few weeks a year. The rest of the time, the Zanskar River is just a river. Time it wrong and you're wading through slush, or the trek isn't running at all. Time it right, you're walking on ice thick enough to hold your weight and a full camp for the night, through a gorge that Zanskari communities have used to travel to Leh in winter for generations. Here's what actually decides the season, month by month, and what two rough winters in a row mean if you're planning for 2027.
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Quick Answer: Best Time for Chadar Trek The traditional season is early January to early February, per official Ladakh tourism listings. In practice, early January has been unreliable two years running. The 2025 trek was pushed back six days waiting for the river to freeze, and the 2026 season was suspended outright when it never did. Daytime temperatures typically run -5°C to -15°C, and nights -15°C to -25°C per official figures, though colder snaps toward -30°C get reported most years. Treat the calendar window as a guideline, not a guarantee, and confirm current ice conditions with your operator before booking anything non-refundable. |
When Is the Chadar Trek Season? Month by Month
The entire trek depends on one thing: how solid the ice is. Ladakh's winter runs December through March, but only part of it is actually safe to walk on, and which part varies by year.
Early January: The Riskiest Stretch
Official tourism listings put the season's start in early January. Two years of real bookings tell a different story. The 2025 trek was originally scheduled for January 7, then pushed to January 13 after a recce team found the stretch between Tar and Tsomo still not fully frozen. In 2026, a recce team went out on January 10 and found the river dangerously unfrozen. The district administration suspended the entire season with immediate effect and set January 20 as the first review date. If you book a fixed early-January date, build in slack. History says you'll probably need it.
Mid-January to Mid-February: When It Usually Works
This stretch has historically been the most reliable part of the season. By mid-January, in a normal year, the ice thickens enough to hold a trekking line, and it tends to stay stable into February. Early February is generally the safer bet within that window, since the ice has had more time to set than an early-January date.
Late February to March: The Season Winds Down
Ladakh's administration has historically run the Chadar season across January and February, not into March. As temperatures climb, the ice thins and starts cracking unevenly, and operators stop taking bookings well before conditions turn genuinely dangerous. Between a late-February date and an early one, early wins on paper, but check ground conditions either way.
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Period |
Ice Condition |
Typical Temp (Day / Night) |
Verdict |
|---|---|---|---|
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Dec - early Jan |
Still forming; delayed trek starts in both 2025 and 2026 |
-5°C to -20°C / -15°C to -25°C |
Higher risk |
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Mid-Jan - mid-Feb |
Historically most stable |
-5°C to -15°C / -15°C to -25°C |
Best window |
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Late Feb - Mar |
Season winding down, ice weakening |
0°C to -10°C / -10°C to -20°C |
Not run |
Why Timing Matters More Than Almost Any Other Trek
On most Himalayan treks, going a week early or late mostly changes the view. On the Chadar, it changes whether the ground under your feet is solid. The ice sheet isn't uniform: thicker in some stretches, thinner near currents and bends, and the route itself shifts each season as guides reassess where it's safe to walk. That's also the reason independent trekking isn't really an option here. The route runs through an ALTOA clearance and a Wildlife Department permit that only registered operators can secure, and local guides read ice conditions day to day in a way no fixed itinerary can promise you.
Suggested to Read:
- Things to know before Chadar Trek
- Chadar Trek – Common Trekking Tips For Beginner
- How to Plan Chadar Trek
What Recent Seasons Actually Looked Like
The season dates above describe the historical pattern, not a promise. The last two winters show exactly why. In 2025, the trek started six days late, once a recce team confirmed enough of the route had frozen. In 2026, it didn't recover. Tsering Angchuk, a State Disaster Response Force inspector who has led Zanskar recce missions for five seasons, said this was the first time the river had failed to form a walkable layer despite checking it every ten days through December and January. The Meteorological Centre in Leh recorded that winter's December-to-February average at -8.6°C, the warmest such stretch in eight years, which is the most likely reason the ice never set. The district administration suspended the season on January 12, and it never restarted.
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Planning for 2026-27: What's Actually Known Recent winters have been less predictable than the historical calendar suggests. Book refundable flights and hold trek dates loosely until your operator confirms current ice conditions through an actual recce, rather than a calendar date. Ask for a live update 10 to 15 days before departure. The 2026-27 season hasn't been confirmed either way as of this writing. The 2026 suspension doesn't predict what 2027 will do, but it's a reason not to lock in non-refundable travel too early. |
Cost, Duration and Booking Snapshot
The trek's distance depends on which source you check, and it's a genuine disagreement, not one side being wrong. The Ministry of Tourism's official listing gives 62 km. Multiple 2026 news reports on the suspension, including The Statesman and Travel And Tour World, independently described it as a 105-km route, matching the figure Wikipedia uses. The gap most likely comes down to how each source measures the route rather than an error on either end. Maximum altitude sits at about 11,123 ft per the Ministry of Tourism. Most itineraries run 8 to 10 days total (the official listing gives 9 days, 8 nights), including 2 to 3 acclimatization nights in Leh before you touch the ice.
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Detail |
Typical Range |
|---|---|
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Trek duration |
8-10 days incl. Leh acclimatization (official listing: 9D/8N) |
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Distance |
62 km per Ministry of Tourism; 105 km per Wikipedia and 2026 news reports |
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Max altitude |
~11,123 ft per Ministry of Tourism |
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Package cost |
₹25,000 - ₹45,000 per person, operator-dependent |
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Age / eligibility |
No fixed age range. A mandatory medical checkup in Leh decides who's cleared to trek. |
How to Plan Your Dates Around the Season
- Target late January into the first half of February. That's when the ice has been most reliable across the seasons we have detailed reporting on.
- Book through a registered operator. The ALTOA no-objection certificate and Wildlife Department permit this route requires can only be arranged that way.
- Arrive in Leh at least 2 to 3 days before the trek starts. A mandatory medical checkup happens on the ground, and anyone found unfit doesn't get cleared.
- Keep flights and hotels flexible, and check in with your operator 10 to 15 days out, once an actual recce report exists.
Common Mistakes People Make With Chadar Trek Timing
- Booking the first week of January and assuming the ice will be ready. It wasn't in 2025, and it never arrived at all in 2026.
- Locking in non-refundable flights months out with no buffer for a delay or suspension.
- Skipping the Leh acclimatization days to save time. The medical checkup on day three is mandatory, and being unfit rules you out entirely.
- Assuming a late date is fine because it worked for someone else last year. Ice conditions genuinely differ season to season, sometimes drastically.
Pro Tips for Picking Your Exact Dates
- If you can only travel once, late January into early February gives you the best odds based on how recent seasons have actually played out.
- Pack for colder than the official range. Listings put nights at -15°C to -25°C, but several recent seasons have dropped closer to -30°C.
- Ask your operator about current group-size limits. The 2025 season capped departures at 10 groups a day of 10 trekkers each, and caps like that can shift year to year.
Why Plan Your Chadar Trek With Himalayan Holidays
Himalayan Holidays (Shikhar Travels India Pvt. Ltd.) builds Himalayan and Ladakh itineraries around actual ice and weather conditions, not a fixed date on a brochure. Talk to the team about current batch status and flexible date options before you lock in flights.
FAQs
Q1. What is the best month for the Chadar Trek?
February tends to be the more reliable month within the traditional season, since the ice has had more time to set than in early January. No month is guaranteed, so confirm conditions with an operator before you book.
Q2. Can you do the Chadar Trek in December
No. The river is still freezing through December, and the ice isn't stable enough to walk on.
Q3. Is January or February better for Chadar Trek?
Both fall within the traditional season, but late January into February has generally offered steadier ice than the first weeks of January.
Q4. How cold does it get on the Chadar Trek?
Official listings put daytime temperatures around -5°C to -15°C and nights at -15°C to -25°C. Several recent seasons have run colder than that at night, so pack for worse than the average.
Q5. Is the Chadar Trek season the same every year?
No. The 2025 season opened six days late. The 2026 season didn't open at all, the first full suspension on record. Confirm live conditions before you book.
Q6. How many days does the Chadar Trek take?
Most itineraries run 8 to 10 days total, including acclimatization nights in Leh. The official listing gives 9 days and 8 nights.
Q7. Do I need a permit for the Chadar Trek?
Yes, and you can't arrange it yourself. The route needs an ALTOA no-objection certificate and a Wildlife Department permit, both handled through a single-window process at the Tourist Information Centre in Leh, and both require going through a registered operator.
Q8. Is the Chadar Trek safe in peak season?
Safer inside the traditional window than outside it, but it's still classified as a difficult, high-altitude winter trek with real risk. A mandatory medical checkup in Leh screens out anyone unfit before the trek starts.
Q9. What happens if the river doesn't freeze that year?
The district administration suspends the trek, as happened for all of 2026. Whether you get a reschedule, a credit, or a refund depends on your operator's own booking terms, so check that before paying anything non-refundable.
Q10. How far in advance should I book the Chadar Trek?
Most people research and hold tentative dates 2 to 3 months out, but the operating dates only firm up once a recce confirms the ice. Keep the booking flexible until then.
The Bottom Line
The Chadar Trek doesn't run on a fixed calendar the way most treks do. Late January into February has been the more dependable stretch across recent seasons, but 2025 and 2026 both showed that even the traditional window isn't guaranteed. Book through a registered operator, keep your travel flexible, and check for an actual recce update before committing to non-refundable dates. Winter 2026-27 hasn't been confirmed either way as of this writing, so treat any calendar date you see online, including this one, as a starting point. When you're ready to plan, talk to Himalayan Holidays about current batch status.
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