Tsomgo Lake (also called Changu Lake) is the most-visited high-altitude lake in Sikkim. Sitting at roughly 3,753 m (12,313 ft) on the Gangtok–Nathula highway, this glacial lake changes colour with every season – frozen white in winter, deep blue in autumn and ringed by rhododendrons in spring.
Tsomgo Lake Quick Facts
| Altitude | ~3,753 m / 12,313 ft |
| Distance from Gangtok | ~38–40 km (2–2.5 hours) |
| Permit | Required (Protected Area Permit via registered operator) |
| Visiting hours | Early morning to about 2 PM (vehicles return by afternoon) |
| Best time | Oct–Dec for clear views; Jan–Mar for snow; Apr–May for flowers |
How to Get a Tsomgo Lake Permit
Individual travellers cannot just drive up. The permit is applied by a registered Sikkim travel agent/taxi operator, usually the evening before.
- Share a photo ID (Aadhaar, Voter ID, Passport, Driving Licence) and 2 passport-size photos.
- Your operator submits details to the Tourism & Civil Aviation Department, Sikkim.
- The permit is issued with your vehicle number – keep a copy with you.
Foreign nationals can visit Tsomgo Lake in groups with a valid RAP and PAP. For full details, read our Sikkim permit guide. When you book the Gangtok & Tsomgo Lake package, Guide My Tour handles the permit for you.
Things to Do at Tsomgo Lake
- Yak ride along the lakeshore (short rides are paid separately).
- Cable car near the lake for higher views (weather permitting).
- Local snacks – hot Maggi, momos and tea at the roadside stalls.
- Photography – the north side of the lake gives the best reflection in the morning.
- Continue to Baba Mandir and Nathula Pass on the same day.
Best Time to Visit Tsomgo Lake
October–November: clear sky, blue water, mild cold. January–March: the lake freezes and snowfall is common, but roads may close after heavy snow. April–May: flowers bloom around the lake. June–September: monsoon fog and landslide risk. Compare seasons in our best time to visit Sikkim guide.
Gaps We Fixed: What Other Tsomgo Lake Guides Don’t Tell You
- Snow-boot rentals: Gumboots and jackets are rented at stalls on the way (around ₹100–₹200). Useful in winter.
- Restroom stops: Limited – use facilities at Gangtok and the 15th Mile area.
- Altitude: Walk slowly, keep kids warm and carry dry fruits. Avoid if you have uncontrolled BP or breathing issues without medical advice.
- Return deadline: Permits are time-bound; vehicles start descending by early afternoon.
- Network: Mobile signal is patchy – inform family before you start.
Suggested Tsomgo Lake Day Plan
7:00 AM leave Gangtok → 9:00 AM Tsomgo Lake → 10:30 AM Baba Mandir → (optional Nathula) → 2:30 PM return → evening at MG Marg.
Where to Stay
Stay in Gangtok; there are no tourist hotels at the lake. See our full Gangtok tour package itinerary.
FAQs about Tsomgo Lake
Is Tsomgo Lake and Changu Lake the same?
Yes, Tsomgo (Tsongmo) and Changu are two names for the same lake.
Can I visit Tsomgo Lake without a tour operator?
No, the permit must be applied through a registered operator and only permitted vehicles can go.
Is Tsomgo Lake open in October?
Yes. October is one of the best months, with clear weather and stable roads.
Is Tsomgo Lake safe for children?
Generally yes for healthy kids above 5, with warm clothing and slow movement.
Plan Your Tsomgo Lake Trip
Let Guide My Tour arrange permits, cab and hotels. Explore our Sikkim tour packages or talk to our travel expert.
