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

Gangtok🇮🇳 India · Himalaya · City58
  1. 62Jan
  2. 59Feb
  3. 64Mar
  4. 76Apr
  5. 67May
  6. 61Jun
  7. 55Jul
  8. 58Aug
  9. 60Sep
  10. 72Oct
  11. 82Nov
  12. 74Dec

#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
Gangtok, India
Photo: Sajal Devnath · Pexels

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.
TigerHillAugustRegular · August · 1 month ago · about Darjeeling · Read more on Tripadvisor ↗

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.
Tripadvisor community · May · 1 month ago · Read more on Tripadvisor ↗
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.
Tripadvisor community · November · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Gangtok's card on the map.

Gangtok climate normals — August

Daytime high22°C / 72°F🌤 warm
Nighttime low18°C / 65°F
Feels like (high)25°C / 77°F
Rainfall993 mm / 39.1 in⛈ soaked
Rainy days31 days
Humidity94%💦 very humid
Dew point19°C / 66°F
Sunshine5.9 h/day
Daylight13.1 h
Wind6 km/h / 3 mph
Air quality (US AQI)37🍃 good

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)

JFMAMJJASOND

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.

JFMAMJJASOND

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 early

    Tsomgo 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 · usuallyRisk

    The 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 feast

    Sikkim'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

    MonsoonRisk

    31 rainy days and about 993 mm in the month — the real kind of rainy season, not afternoon showers.

    from the climate normals

What's on around the world in August →

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?

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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.