December is one of the cooler months of the year in Gyalshing district (West Sikkim), with average highs near 5.7°C and lows around -4.7°C (mean 0.5°C). It is one of the drier months, averaging 4 mm of rainfall and 59% relative humidity across the period.
December is one of the cooler months of the year in Gyalshing district (West Sikkim). Across 45 years of records, the warmest December in Gyalshing district (West Sikkim) was 2017 — when the month averaged 3°C — while the coldest were 1986, 2018 and 2019 at -1.4°C. Typical December days reach 5.7°C with nights near -4.7°C. The long-term trend is warming, about 0.3°C per decade.
December is one of the drier months in Gyalshing district (West Sikkim), averaging 4 mm of rainfall. The wettest December on record was 2021 with 19 mm, while the driest were 2016, 2017 and 2025, among others at 0 mm.
Relative humidity in Gyalshing district (West Sikkim) during December averages 59%. The most humid December was 2021 at 78%, and the least humid was 1996 at 39%.
December receives about 3.5 kWh/m²/day of solar energy in Gyalshing district (West Sikkim). The sunniest December was 2005 at 4.1 kWh/m²/day, and the cloudiest were 1995 and 1997 at 2.9.
Average wind speed in Gyalshing district (West Sikkim) during December is 1.2 m/s. The windiest Decembers were 2013, 2020 and 2024, among others at 1.4 m/s, while the calmest were 2016, 2023 and 2025 at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -0.1°C | 0.1°C | 0.9°C | 0.6°C | 1.2°C | +1.3°C |
| Avg High | 5.3°C | 5.4°C | 6.1°C | 5.7°C | 6.0°C | +0.7°C |
| Avg Low | -5.4°C | -5.1°C | -4.4°C | -4.5°C | -3.6°C | +1.8°C |
| Avg Rain | 6 mm | 3 mm | 2 mm | 3 mm | 6 mm | 0 mm |
December temperatures in Gyalshing district (West Sikkim) have risen by about 1.3°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -15.9°C (2018) to a record high of 11.5°C (1988).
Rainfall in December is one of the drier months, averaging 4 mm, with a wettest year of 19 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
A quieter season to visit Gyalshing district (West Sikkim)
If your dates are flexible, the more temperate months of June and September tend to be the most comfortable for visiting Gyalshing district (West Sikkim). That said, December — with days averaging 5.7°C and nights around -4.7°C (mean 0.5°C) and low rainfall (4 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 7.2°C | 2.2°C | -2.9°C | 10.1°C | -7.0°C | 0 mm | 62% | 1.1 m/s | — |
| 2024 | 6.1°C | 1.2°C | -3.7°C | 10.5°C | -7.7°C | 1 mm | 70% | 1.4 m/s | 3.5 |
| 2023 | 6.1°C | 1.3°C | -3.5°C | 9.1°C | -9.1°C | 7 mm | 71% | 1.1 m/s | 3.4 |
| 2022 | 6.2°C | 1.5°C | -3.2°C | 9.1°C | -8.0°C | 1 mm | 75% | 1.2 m/s | 3.3 |
| 2021 🌧️ | 4.4°C | -0.1°C | -4.6°C | 10.6°C | -10.0°C | 19 mm | 78% | 1.2 m/s | 3.4 |
| 2020 | 5.9°C | 1.0°C | -3.8°C | 8.1°C | -6.8°C | 7 mm | 69% | 1.4 m/s | 3.5 |
| 2019 | 3.5°C | -1.4°C | -6.3°C | 6.9°C | -11.8°C | 14 mm | 67% | 1.3 m/s | 3.3 |
| 2018 | 4.0°C | -1.4°C | -6.7°C | 7.2°C | -15.9°C | 9 mm | 67% | 1.2 m/s | 3.4 |
| 2017 🔥 | 7.7°C | 3.0°C | -1.7°C | 10.4°C | -7.2°C | 0 mm | 59% | 1.2 m/s | 4 |
| 2016 | 7.8°C | 2.9°C | -1.9°C | 11.0°C | -8.8°C | 0 mm | 63% | 1.1 m/s | 3.8 |
| 2015 | 4.3°C | -0.6°C | -5.4°C | 8.2°C | -10.2°C | 1 mm | 71% | 1.3 m/s | 3.2 |
| 2014 | 6.7°C | 1.5°C | -3.6°C | 10.9°C | -12.1°C | 5 mm | 56% | 1.2 m/s | 3.5 |
| 2013 | 4.9°C | 0.0°C | -5.0°C | 7.9°C | -11.8°C | 1 mm | 68% | 1.4 m/s | 3.2 |
| 2012 | 6.2°C | 0.8°C | -4.7°C | 9.8°C | -11.6°C | 0 mm | 48% | 1.4 m/s | 3.8 |
| 2011 | 6.1°C | 1.1°C | -3.9°C | 10.8°C | -7.1°C | 3 mm | 62% | 1.3 m/s | 3.6 |
| 2010 | 5.3°C | -0.1°C | -5.5°C | 8.0°C | -13.4°C | 0 mm | 54% | 1.3 m/s | 3.9 |
| 2009 | 5.2°C | 0.2°C | -4.9°C | 8.8°C | -10.3°C | 1 mm | 63% | 1.2 m/s | 3.2 |
| 2008 | 7.3°C | 2.2°C | -2.8°C | 11.3°C | -8.8°C | 0 mm | 67% | 1.2 m/s | 3.2 |
| 2007 | 6.2°C | 0.9°C | -4.3°C | 9.4°C | -8.3°C | 0 mm | 55% | 1.3 m/s | 3.7 |
| 2006 | 6.5°C | 1.4°C | -3.7°C | 9.7°C | -6.5°C | 3 mm | 61% | 1.3 m/s | 3.3 |
| 2005 | 6.1°C | 0.8°C | -4.5°C | 8.7°C | -12.1°C | 0 mm | 49% | 1.2 m/s | 4.1 |
| 2004 | 6.5°C | 1.1°C | -4.4°C | 11.1°C | -13.9°C | 0 mm | 60% | 1.2 m/s | 3.5 |
| 2003 | 5.0°C | -0.2°C | -5.5°C | 8.9°C | -15.3°C | 12 mm | 60% | 1.2 m/s | 3.4 |
| 2002 | 5.8°C | 0.4°C | -4.9°C | 9.7°C | -9.3°C | 2 mm | 54% | 1.2 m/s | 3.4 |
| 2001 | 5.5°C | 0.5°C | -4.5°C | 9.2°C | -9.5°C | 0 mm | 53% | 1.2 m/s | 3.6 |
| 2000 | 6.9°C | 1.3°C | -4.2°C | 10.6°C | -8.6°C | 0 mm | 47% | 1.2 m/s | 3.8 |
| 1999 | 5.4°C | 0.1°C | -5.2°C | 8.7°C | -9.1°C | 0 mm | 61% | 1.2 m/s | 3.2 |
| 1998 | 6.3°C | 0.8°C | -4.6°C | 10.6°C | -10.2°C | 0 mm | 50% | 1.2 m/s | 3.7 |
| 1997 | 4.2°C | -1.1°C | -6.5°C | 6.9°C | -12.6°C | 13 mm | 61% | 1.3 m/s | 2.9 |
| 1996 | 6.5°C | 1.1°C | -4.4°C | 8.0°C | -9.3°C | 0 mm | 39% | 1.2 m/s | 4 |
| 1995 | 4.8°C | -0.3°C | -5.3°C | 7.4°C | -8.6°C | 6 mm | 61% | 1.2 m/s | 2.9 |
| 1994 | 5.2°C | -0.5°C | -6.2°C | 9.3°C | -10.6°C | 0 mm | 46% | 1.3 m/s | 3.4 |
| 1993 | 6.9°C | 1.7°C | -3.4°C | 11.2°C | -7.6°C | 0 mm | 44% | 1.2 m/s | 3.5 |
| 1992 | 4.4°C | -0.8°C | -6.1°C | 7.5°C | -9.6°C | 1 mm | 53% | 1.2 m/s | 3.5 |
| 1991 | 4.5°C | -0.6°C | -5.7°C | 9.5°C | -11.4°C | 5 mm | 61% | 1.2 m/s | 3.5 |
| 1990 | 5.8°C | 0.9°C | -4.0°C | 7.5°C | -7.4°C | 0 mm | 55% | 1.2 m/s | 3.5 |
| 1989 | 4.2°C | -1.3°C | -6.8°C | 8.1°C | -12.8°C | 1 mm | 54% | 1.2 m/s | 3.5 |
| 1988 | 6.3°C | 1.2°C | -3.8°C | 11.5°C | -8.3°C | 7 mm | 56% | 1.2 m/s | 3.2 |
| 1987 | 7.3°C | 1.4°C | -4.6°C | 10.8°C | -12.4°C | 0 mm | 53% | 1.2 m/s | 3.5 |
| 1986 ❄️ | 3.9°C | -1.4°C | -6.8°C | 8.7°C | -11.8°C | 12 mm | 62% | 1.3 m/s | 3.4 |
| 1985 | 5.6°C | 0.7°C | -4.2°C | 9.0°C | -9.9°C | 15 mm | 64% | 1.2 m/s | 3.4 |
| 1984 | 5.8°C | 0.5°C | -4.8°C | 8.3°C | -7.4°C | 1 mm | 58% | 1.4 m/s | 3.4 |
| 1983 | 4.6°C | -0.7°C | -6.1°C | 7.3°C | -12.7°C | 7 mm | 52% | 1.3 m/s | — |
| 1982 | 5.0°C | -0.3°C | -5.6°C | 8.9°C | -11.8°C | 0 mm | 61% | 1.3 m/s | — |
| 1981 | 4.7°C | -0.6°C | -6.0°C | 6.8°C | -10.8°C | 11 mm | 58% | 1.2 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 5.7°C with lows near -4.7°C (mean 0.5°C), based on 45 years of NASA POWER data.
December averages 4 mm of rainfall in Gyalshing district (West Sikkim), one of the drier months. The wettest on record was 19 mm in 2021.
The hottest December reached 11.5°C in 1988. The coldest dipped to -15.9°C in 2018.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.3°C. Daytime highs moved from 5.1°C to 6°C and overnight lows from -5.3°C to -3.6°C over the same span.
December is one of the cooler months of the year in Gyalshing district (West Sikkim) and one of the drier months, so plan for around 5.7°C daytime highs and -4.7°C at night.
Not quite — December is the 3rd coolest month in Gyalshing district (West Sikkim), averaging 0.5°C.
For December in Gyalshing district (West Sikkim), pack warm layers and a jacket for chilly mornings, with typical highs of 5.7°C and lows of -4.7°C.
Relative humidity in December averages 59% — moderately humid.
Average wind speed in December is 1.2 m/s. The windiest December on record averaged 1.4 m/s (1984).
The wettest December on record was 2021 with 19 mm. On average, December sees 4 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Gyalshing district (West Sikkim) behaves each December, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for December specifically, along with year-by-year records and how the month has changed over the decades.
