Gangtok (Sikkim) weather in December

December is in the stretch Darjeeling-forum regulars recommend - November to February - and the reason is visibility: the monsoon moisture and fog are gone, the Kanchenjunga views are at their best, and from Tiger Hill on a clear morning Everest is possible. They rate December's odds of clear sky above October's. Where they push back is on snow: the town itself rarely gets any in December, and the people who want it are pointed uphill instead, to Sandakphu, Tumling, Phalut or across to Tsomgo Lake in Sikkim. The other caution is practical - conditions turn fast and roads can shut, so book late rather than early. The record: 12C days, 3.5C nights, 13.6 precipitation days, 1.8cm of snow, 9 hours of sun, AQI 103.

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.