Lachung

A village at the head of the valley

Lachung sits at about 2,700 m on the banks of the Lachung Chu in Sikkim's Mangan district (formerly North Sikkim), roughly 125 km from Gangtok. The drive usually takes most of a day, through Mangan and Chungthang, where the Lachung and Lachen rivers join to form the Teesta. Wooden houses spread up both sides of the river, and Lachung Monastery looks down from the slope. The botanist Joseph Hooker, who travelled through Sikkim in the 1840s, called it the most picturesque village in the state.

Most visitors spend one or two nights here. The usual pattern is to arrive in the late afternoon, sleep, and leave before dawn for Yumthang Valley and, for Indian nationals, Zero Point.

You cannot come on your own

North Sikkim is a protected area close to the border with Tibet. Permits are issued only through a registered Sikkim tour operator, and solo or self-drive trips are not allowed. Your operator arranges the permit, the vehicle and driver, and the hotel together, usually as a two- or three-day package from Gangtok. Indian nationals need photo ID. Foreign nationals need the Sikkim entry permit as well as a Protected Area Permit, and may go as far as Yumthang but not to Zero Point. Checkposts on the road have fixed cut-off times, so the day's schedule is set by them.

Roads and weather

Landslides are the real risk here. The Teesta flood of October 2023 badly damaged Chungthang, and in 2025 North Sikkim was closed to tourists for about four months after monsoon landslides, reopening in September. Roads can shut at short notice at any time of year, and no permit overrides a closure. Ask your operator for the road status the day before, and leave a spare day at the end of the trip.

The year in Lachung

January nights fall to around −10°C and the village is often under snow. Spring arrives in late March, and the rhododendrons around Yumthang flower from about April into May. June to September is the wettest stretch and the riskiest on the road. October and November bring clear skies and yellow and red leaves on the maples and larches. See the best time to visit for month-by-month detail.

Before you arrive

Lachung does not allow packaged drinking water in plastic bottles. Hotels and homestays provide filtered water, so bring a reusable bottle. There is a State Bank of India branch in the village, but carry enough cash from Gangtok. Lachung itself is at a moderate height, while the day trip climbs much higher; take the ascent slowly if you have been unwell at altitude before.