Gangtok (Sikkim) weather in August
August in Gangtok: warm, soaked, with clean air — a gamble, with 31 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#11 of 12 months in Gangtok · #1115 of 1413 destinations to visit in August · comfort 58/100 (tier D)
- Days
- 22°C
- Nights
- 18°C
- Wet days
- 31
- Sun
- 5.9 h
- Humidity
- 94%
- Daylight
- 13 h

Traveller notes on Gangtok in August
Notes from nearby Darjeeling (47 km away)
Gangtok doesn't have its own notes for August yet — these are about Darjeeling, close enough to share the season.
Darjeeling-forum threads on August weather are direct that this sits at the peak of the monsoon, rain expected daily and posters calling it genuinely not a great month to visit given how much it disrupts outdoor plans. Fog typically accompanies the rain, obscuring the famous Kanchenjunga and Tiger Hill sunrise views that draw most visitors in the first place. The terrain adds a real safety factor - these are landslide-prone hills, and road blockages are a genuine possibility during the heaviest stretches. Regulars recommend pushing a trip to mid-or-late September instead, once monsoon intensity has eased. That said, some posters find a certain charm in the wet, quiet hill-station atmosphere. The record: 19.8C days feeling like 22C, 15.2C nights, an extraordinarily high 691mm across nearly 31 days, 92 percent humidity and just 6.3 hours of sun - among the wettest entries anywhere on this dataset.
Other months in Gangtok
Forum posters describe May in Gangtok as neither too hot nor too cold, genuinely pleasant, with typical temperatures around 15-22C, somewhat cooler in nearby Darjeeling and North Sikkim. Posters note occasional evening or overnight rain showers are common but rarely last long, recommending an umbrella or light rain jacket on hand regardless. Posters are direct that a trip up toward North Sikkim or Nathula still calls for heavy woolens given the altitude, and that snow remains visible at higher points like Yumesedong/Katao and Zero Point even in May, though not at Nathula itself this time of year. Posters consistently rate late May as one of the best, safest windows for the region, clear of the landslide risk that monsoon season brings later on. Posters generally rate May as pleasant and one of the peak, most reliable months to visit Gangtok.
Forum posters call November a great time to visit, with the monsoon fully over and clear skies dominating - by month's end especially, rain is described as rare. Daytime is genuinely pleasant, but nights turn properly cold once the sun sets, with lows commonly down around 3-5C and winter conditions setting in for good by mid-month given the region's high elevation. Posters note real snow at nearby high-altitude points (Zero Point in North Sikkim, Nathula) becomes a realistic possibility from mid-November onward, though whether a specific visit actually sees snowfall is described as pure luck rather than something to count on. Heavy warm clothing is treated as essential for evenings and any higher-altitude day trip regardless of how mild Gangtok itself feels during the day.
Add your own note from Gangtok's card on the map.
Gangtok climate normals — August
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Gangtok in August
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quietschool holidays in 4 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Gangtok's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherGangtok's best weather comes in April, November and December — separate windows, not one continuous season.
August coincides with Landslides on NH-10.
Best weatherFair weatherToughest weather
What's on in Gangtok in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Rule
Permits for the high roads
1 Jan – 31 DecBook earlyTsomgo Lake, Nathu La and everything north of Chungthang need a permit arranged a day ahead through a registered Sikkim operator, not bought on the spot. Nathu La itself is open to Indian nationals only. Source ↗
- Closure
Landslides on NH-10
15 Jun – 15 Sep · usuallyRiskThe road up from Siliguri along the Teesta is the only practical way in and it loses sections every season, sometimes for days. North Sikkim permits are suspended outright after the bad slides. Source ↗
- Festival
Pang Lhabsol
25 Aug – 20 Sep · usuallyReligious feastSikkim's own festival honours Khangchendzonga as the state's guardian, with the warrior Chaam danced in the courtyard at the Tsuklakhang. Mid-September, set by the Tibetan calendar, and still mostly a local occasion. Source ↗
- Season
Wet season
MonsoonRisk31 rainy days and about 993 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Nearby, and something's on
Within 300 km of Gangtok — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Gangtok?
Gangtok in August — FAQ
- Is August a good time to visit Gangtok?
- August in Gangtok: warm, soaked, with clean air — a gamble, with 31 rainy days. It ranks #11 of 12 months for Gangtok on SeasonMap's comfort score (58/100).
- What is the weather like in Gangtok in August?
- In August, Gangtok averages a daily high of 22°C and a low of 18.3°C, with about 992.7 mm of rain over roughly 30.8 rainy days.
- What is the air quality in Gangtok in August?
- Gangtok has a mean US Air Quality Index of about 37 in August.
Within 300 km: Darjeeling's Toy train runs and monsoon gaps on 1 Jan – 31 Dec, and Thimphu's Sustainable Development Fee on 1 Jan – 31 Dec.