Best time to visit Sikkim and Darjeeling, month by month

There are two good seasons in the Eastern Himalaya and two harder ones. Autumn, from October to November, is the classic season: the monsoon has washed the air clean, the roads are open and Kangchenjunga stands clear above Gangtok and Darjeeling most mornings. Spring, from March to May, is warmer and greener, with rhododendrons and magnolias in flower, though haze often softens the views by afternoon.

Winter, from December to February, is cold but often brilliantly clear. Gangtok and Darjeeling rarely get snow, but Tsomgo Lake freezes, Zero Point and Sandakphu are white, and snow can close the high roads for days at a time. The monsoon, from mid-June to September, is the hard season. Rain is heavy, mountains vanish into cloud, and landslides block roads, especially NH10 along the Teesta.

The best month for you depends on what you want to see. The table and the notes below set out each month for Gangtok, Darjeeling and North Sikkim. Weather patterns shift from year to year, so check current status before you travel.

Temperatures are typical daytime ranges for Gangtok, at about 1,650 m, and Darjeeling, at about 2,045 m. Lachung, at about 2,700 m, is several degrees colder and drops below freezing at night from November to March.

If you can choose only one season, choose autumn. The views are the best of the year, with Kangchenjunga clear from Tashi viewpoint in Gangtok and from Tiger Hill above Darjeeling on most mornings. Roads in North Sikkim are at their most stable, and the Sandakphu trek reopens after the monsoon break.

October has one drawback: it is the busiest month of the year. Durga Puja, Dashain and Tihar fill the hills with holidaymakers from Kolkata and the rest of Bengal, and hotels, cars and toy train seats sell out weeks ahead. November is almost as clear, colder at night, and much quieter once the festival holidays end. For most travellers it is the single best month.

Nights at Zuluk and Lachen fall below freezing in November, so pack a warm jacket even if Gangtok feels mild by day.

Spring is the flower season. Rhododendrons start flowering lower down in March and reach Yumthang valley from mid-April, with the Shingba rhododendron sanctuary at its best in late April and May. The road to Tsomgo is lined with blooms, and the Singalila ridge to Sandakphu is one of the finest spring walks in the Himalaya. First-flush Darjeeling tea is plucked in March and second flush begins in May.

The trade-off is visibility. Haze builds as the weeks go by and afternoon clouds often hide the mountains, so plan viewpoints for early morning. May is also peak holiday season for Indian families, with full hotels in Gangtok, crowds at Tsomgo and higher prices everywhere. March and early April give much of the spring at lower cost.

Winter is cold, dry and often very clear. January gives the best chance of a clean view of Kangchenjunga from Darjeeling, and hotel prices are low outside the Christmas and New Year week. Snow is rare in Gangtok and Darjeeling towns but likely at Tsomgo, Zero Point, Lachung and Sandakphu. Families from the plains often come for exactly that.

The catch is access. Heavy snow closes the road to Nathu La, above Zuluk and to Gurudongmar for days at a time, and the Gurudongmar road is often shut after big falls in January and February. Treat any high destination as a bonus rather than a promise, and keep a spare day. Festivals help fill the gaps: Losoong and the Kagyed Chaam bring masked dances to Gangtok in December, and Losar falls in February or early March.

The monsoon usually arrives in early to mid-June and stays until late September. July is the wettest month. Mountains are hidden for days, landslides block NH10 and the hill roads, and North Sikkim permits are often suspended during heavy rain. Since the October 2023 flood in the Teesta valley, some stretches of road are temporary and more fragile in the rains. The national parks of the Dooars close from 16 June to 15 September, and Neora Valley near Lava closes from about mid-June to mid-September.

Still, the monsoon has its fans. Tea gardens are deep green, Darjeeling hotels are at their cheapest in August, and towns are quiet. Pang Lhabsol brings masked dances to Gangtok in late August or September. If you travel now, stay low, keep plans flexible and avoid permit areas. Kalimpong villages and Dzongu are safer bets than the high valleys. Check current status before you travel.

Weather is only half the story. The Eastern Himalaya is the nearest mountain holiday for much of eastern India, so school and festival holidays shape prices and availability as much as the season does. The busiest weeks are the Durga Puja and Diwali holidays in October, the Christmas and New Year week, and the summer school holidays from mid-May to early June.

In those weeks, hotels in Gangtok and Darjeeling fill early, registered vehicles for Tsomgo and North Sikkim run short, and toy train seats sell out. Book rooms and cars four to six weeks ahead, and expect higher rates. Shared jeeps from Siliguri also fill fast in the mornings, so start early.

Outside these weeks you can be much more relaxed. In March and November we can often confirm a North Sikkim trip a few days ahead at better rates, and walk-in rooms are easy to find in Pelling, Kalimpong and Darjeeling. Late January and February, outside Losar, are quieter still.

Whatever the month, build one spare day into any trip that includes a permit area or a long mountain drive. Weather in the hills changes fast, and a spare day turns a closed road into a minor delay rather than a missed train or flight.

Use this list as a starting point. Every month has its trade-offs, and the right choice depends on whether you care most about views, snow, flowers, cost or crowds.

• Mountain views: October to December, with January also excellent in Darjeeling.
• Snow: January to March at Tsomgo, Zero Point and Sandakphu, accepting the risk of closed roads.
• Rhododendrons: mid-April to May at Yumthang, on the Tsomgo road and on the Singalila ridge.
• Gurudongmar Lake: April to June and October to November, when the road is most often open.
• Toy train and tea: March to May and October to November, with spring for first-flush tea.
• Lowest prices: August in Darjeeling, and January and February outside festival weeks.
• Fewer crowds with good weather: March and November.