January is one of the cooler months of the year in South Sikkim, with average highs near 17.7°C and lows around 6.9°C (mean 12.3°C). It is one of the drier months, averaging 5 mm of rainfall and 49% relative humidity across the period.
January is one of the cooler months of the year in South Sikkim. Across 45 years of records, the warmest January in South Sikkim was 1990 — when the month averaged 13.8°C — while the coldest was 2011 at 10.6°C. Typical January days reach 17.7°C with nights near 6.9°C. The long-term January temperature trend is broadly flat.
January is one of the drier months in South Sikkim, averaging 5 mm of rainfall. The wettest January on record was 2020 with 25 mm, while the driest were 1990, 2006 and 2010, among others at 0 mm.
Relative humidity in South Sikkim during January averages 49%. The most humid January was 2022 at 73%, and the least humid was 1995 at 33%.
January receives about 3.5 kWh/m²/day of solar energy in South Sikkim. The sunniest January was 2006 at 4.3 kWh/m²/day, and the cloudiest were 1996 and 2022 at 2.9.
Average wind speed in South Sikkim during January is 1.1 m/s. The windiest January was 2013 at 1.3 m/s, while the calmest was 2025 at 0.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.0°C | 12.2°C | 12.5°C | 12.5°C | 12.3°C | +0.3°C |
| Avg High | 17.5°C | 17.9°C | 17.9°C | 17.8°C | 16.9°C | -0.6°C |
| Avg Low | 6.6°C | 6.5°C | 7.1°C | 7.2°C | 7.6°C | +1°C |
| Avg Rain | 5 mm | 5 mm | 5 mm | 4 mm | 7 mm | +2 mm |
January temperatures in South Sikkim have risen by about 0.8°C between 1981–1985 and 2021–2025.
January has ranged from a record low of 1.6°C (1998) to a record high of 23.4°C (2023).
Rainfall in January is one of the drier months, averaging 5 mm, with a wettest year of 25 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.3°C per decade, narrowing the gap between day and night.
A quieter season to visit South Sikkim
If your dates are flexible, the more temperate months of April and May tend to be the most comfortable for visiting South Sikkim. That said, January — with days averaging 17.7°C and nights around 6.9°C (mean 12.3°C) and low rainfall (5 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 | 17.8°C | 13.1°C | 8.4°C | 20.4°C | 4.9°C | 4 mm | 65% | 0.9 m/s | 3.6 |
| 2024 | 16.3°C | 11.6°C | 6.9°C | 18.7°C | 4.5°C | 3 mm | 62% | 1.1 m/s | 3.2 |
| 2023 | 18.1°C | 13.1°C | 8.0°C | 23.4°C | 5.5°C | 0 mm | 57% | 1.1 m/s | 3.8 |
| 2022 | 15.5°C | 11.3°C | 7.1°C | 18.3°C | 4.0°C | 9 mm | 73% | 1 m/s | 2.9 |
| 2021 | 18.0°C | 13.2°C | 8.5°C | 21.3°C | 5.1°C | 4 mm | 58% | 1 m/s | 3.6 |
| 2020 🌧️ | 15.9°C | 11.2°C | 6.4°C | 18.5°C | 2.7°C | 25 mm | 64% | 1 m/s | 3 |
| 2019 | 18.3°C | 12.8°C | 7.3°C | 20.4°C | 3.9°C | 2 mm | 51% | 1.1 m/s | 3.4 |
| 2018 | 17.4°C | 12.3°C | 7.1°C | 19.8°C | 3.4°C | 0 mm | 50% | 1.1 m/s | 3.8 |
| 2017 | 18.6°C | 13.5°C | 8.4°C | 22.7°C | 4.6°C | 2 mm | 51% | 1.1 m/s | 3.6 |
| 2016 | 17.2°C | 12.2°C | 7.1°C | 19.7°C | 4.5°C | 6 mm | 53% | 1.2 m/s | 3 |
| 2015 | 19.2°C | 13.7°C | 8.2°C | 21.9°C | 4.7°C | 9 mm | 52% | 1.2 m/s | 3.4 |
| 2014 | 18.4°C | 13.2°C | 8.0°C | 20.9°C | 4.2°C | 0 mm | 53% | 1.1 m/s | 3.7 |
| 2013 | 18.5°C | 12.7°C | 6.8°C | 22.2°C | 2.3°C | 5 mm | 35% | 1.3 m/s | 4 |
| 2012 | 15.8°C | 10.9°C | 6.0°C | 19.0°C | 4.1°C | 7 mm | 57% | 1.1 m/s | 3.1 |
| 2011 ❄️ | 15.9°C | 10.6°C | 5.3°C | 18.3°C | 1.9°C | 4 mm | 57% | 1.1 m/s | 3.5 |
| 2010 | 18.9°C | 13.3°C | 7.7°C | 20.7°C | 3.3°C | 0 mm | 44% | 1.1 m/s | 4.1 |
| 2009 | 18.9°C | 13.7°C | 8.5°C | 22.2°C | 6.2°C | 1 mm | 55% | 1 m/s | 3.7 |
| 2008 | 17.4°C | 12.2°C | 6.9°C | 21.3°C | 2.4°C | 17 mm | 53% | 1.1 m/s | 3.3 |
| 2007 | 17.7°C | 12.4°C | 7.1°C | 21.4°C | 4.0°C | 2 mm | 46% | 1 m/s | 3.7 |
| 2006 | 19.1°C | 13.6°C | 8.1°C | 22.5°C | 5.4°C | 0 mm | 44% | 1 m/s | 4.3 |
| 2005 | 17.5°C | 12.2°C | 6.8°C | 21.2°C | 3.1°C | 9 mm | 56% | 1 m/s | 3 |
| 2004 | 16.8°C | 11.8°C | 6.7°C | 18.5°C | 3.9°C | 11 mm | 55% | 1.1 m/s | 3.2 |
| 2003 | 18.2°C | 12.3°C | 6.4°C | 22.1°C | 3.4°C | 6 mm | 39% | 1.1 m/s | 3.8 |
| 2002 | 17.8°C | 12.4°C | 7.1°C | 19.9°C | 3.7°C | 7 mm | 51% | 1.1 m/s | 3.5 |
| 2001 | 18.1°C | 12.3°C | 6.5°C | 21.8°C | 3.9°C | 0 mm | 36% | 1.1 m/s | 3.6 |
| 2000 | 17.9°C | 12.3°C | 6.6°C | 19.6°C | 4.3°C | 1 mm | 42% | 1.2 m/s | 3.4 |
| 1999 | 18.6°C | 12.9°C | 7.2°C | 20.8°C | 2.8°C | 0 mm | 40% | 1.1 m/s | 3.8 |
| 1998 | 17.2°C | 11.4°C | 5.7°C | 19.6°C | 1.6°C | 1 mm | 43% | 1.1 m/s | 3.5 |
| 1997 | 17.5°C | 11.7°C | 6.0°C | 21.0°C | 2.8°C | 2 mm | 35% | 1.2 m/s | 3.5 |
| 1996 | 17.4°C | 11.8°C | 6.2°C | 20.3°C | 4.4°C | 12 mm | 48% | 1.2 m/s | 2.9 |
| 1995 | 17.8°C | 11.9°C | 6.0°C | 21.0°C | 3.3°C | 3 mm | 33% | 1.2 m/s | 3.1 |
| 1994 | 19.6°C | 13.7°C | 7.8°C | 22.6°C | 3.6°C | 16 mm | 38% | 1.1 m/s | 3.4 |
| 1993 | 16.7°C | 11.1°C | 5.5°C | 20.1°C | 3.0°C | 13 mm | 46% | 1.1 m/s | 3.1 |
| 1992 | 17.1°C | 11.8°C | 6.4°C | 20.6°C | 2.4°C | 3 mm | 46% | 1 m/s | 3.7 |
| 1991 | 17.3°C | 11.6°C | 6.0°C | 22.9°C | 3.3°C | 4 mm | 43% | 1.1 m/s | 3.3 |
| 1990 🔥 | 19.7°C | 13.8°C | 8.0°C | 22.5°C | 5.1°C | 0 mm | 36% | 1.1 m/s | 3.8 |
| 1989 | 17.5°C | 11.6°C | 5.6°C | 20.5°C | 2.7°C | 4 mm | 39% | 1.2 m/s | 3.4 |
| 1988 | 18.6°C | 13.0°C | 7.4°C | 20.4°C | 4.0°C | 1 mm | 46% | 1.1 m/s | 3.6 |
| 1987 | 18.5°C | 12.9°C | 7.3°C | 20.1°C | 3.8°C | 3 mm | 45% | 1.1 m/s | 3.5 |
| 1986 | 17.6°C | 12.3°C | 7.1°C | 18.9°C | 4.3°C | 0 mm | 50% | 1.1 m/s | 3.7 |
| 1985 | 17.3°C | 11.9°C | 6.5°C | 19.3°C | 4.9°C | 2 mm | 48% | 1.1 m/s | 3.1 |
| 1984 | 16.6°C | 11.1°C | 5.6°C | 19.9°C | 3.6°C | 14 mm | 42% | 1.1 m/s | 3.4 |
| 1983 | 16.4°C | 11.0°C | 5.6°C | 20.3°C | 3.3°C | 1 mm | 43% | 1.2 m/s | — |
| 1982 | 18.7°C | 13.2°C | 7.7°C | 20.7°C | 5.9°C | 6 mm | 47% | 1.1 m/s | — |
| 1981 | 16.4°C | 11.4°C | 6.3°C | 20.5°C | 3.8°C | 14 mm | 60% | 1 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 17.7°C with lows near 6.9°C (mean 12.3°C), based on 45 years of NASA POWER data.
January averages 5 mm of rainfall in South Sikkim, one of the drier months. The wettest on record was 25 mm in 2020.
The hottest January reached 23.4°C in 2023. The coldest dipped to 1.6°C in 1998.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.8°C. Daytime highs moved from 17.1°C to 17.1°C and overnight lows from 6.3°C to 7.8°C over the same span.
January is one of the cooler months of the year in South Sikkim and one of the drier months, so plan for around 17.7°C daytime highs and 6.9°C at night.
Yes — January is the coldest month of the year in South Sikkim, averaging 12.3°C.
For January in South Sikkim, pack warm layers and a jacket for chilly mornings, with typical highs of 17.7°C and lows of 6.9°C.
Relative humidity in January averages 49% — relatively dry.
Average wind speed in January is 1.1 m/s. The windiest January on record averaged 1.3 m/s (2013).
The wettest January on record was 2020 with 25 mm. On average, January sees 5 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 South Sikkim behaves each January, 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 January specifically, along with year-by-year records and how the month has changed over the decades.
