December is one of the cooler months of the year in Bongaigaon, with average highs near 24.7°C and lows around 9.7°C (mean 17.2°C). It is one of the drier months, averaging 5 mm of rainfall and 76% relative humidity across the period.
December is one of the cooler months of the year in Bongaigaon. Across 45 years of records, the warmest December in Bongaigaon was 2016 — when the month averaged 19.4°C — while the coldest were 1983 and 1991 at 15.5°C. Typical December days reach 24.7°C with nights near 9.7°C. The long-term trend is warming, about 0.3°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.8°C | 17.0°C | 16.9°C | 17.8°C | 17.8°C | +1°C |
| Avg High | 24.5°C | 24.6°C | 24.1°C | 25.5°C | 25.0°C | +0.5°C |
| Avg Low | 9.0°C | 9.5°C | 9.6°C | 10.0°C | 10.5°C | +1.5°C |
| Avg Rain | 11 mm | 5 mm | 5 mm | 4 mm | 1 mm | -10 mm |
December temperatures in Bongaigaon have risen by about 1.6°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 6.6°C (1991) to a record high of 26.4°C (2015).
Rainfall in December is one of the drier months, averaging 5 mm, with a wettest year of 52 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.
One of the best times to visit Bongaigaon
December is one of the best times to visit Bongaigaon. Expect days averaging 24.7°C and nights around 9.7°C (mean 17.2°C) — cooler than Bongaigaon's yearly average — with low rainfall (5 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 24.3°C | 10.9°C | 17.6°C | 0 mm | 80% | 1.2 m/s | — |
| 2024 | 23.3°C | 10.5°C | 16.9°C | 0 mm | 80% | 1.3 m/s | 3.5 |
| 2023 | 26.2°C | 11.8°C | 19.0°C | 6 mm | 77% | 1.3 m/s | 3.5 |
| 2022 | 25.2°C | 10.1°C | 17.7°C | 0 mm | 83% | 1.2 m/s | 3.3 |
| 2021 | 25.8°C | 11.0°C | 18.4°C | 2 mm | 80% | 1.2 m/s | 3.5 |
| 2020 | 25.4°C | 8.8°C | 17.1°C | 0 mm | 83% | 1.1 m/s | 3.4 |
| 2019 | 25.0°C | 7.9°C | 16.5°C | 0 mm | 80% | 1.2 m/s | 3.3 |
| 2018 | 24.8°C | 9.3°C | 17.0°C | 14 mm | 76% | 1.2 m/s | 3.5 |
| 2017 | 25.4°C | 13.0°C | 19.2°C | 1 mm | 84% | 1.2 m/s | 3.7 |
| 2016 🔥 | 26.0°C | 12.7°C | 19.4°C | 2 mm | 80% | 1.2 m/s | 3.7 |
| 2015 | 26.4°C | 10.5°C | 18.4°C | 15 mm | 78% | 1.1 m/s | 3.2 |
| 2014 | 26.2°C | 9.6°C | 17.9°C | 0 mm | 79% | 1.1 m/s | 3.4 |
| 2013 | 25.9°C | 10.1°C | 18.0°C | 0 mm | 81% | 1.2 m/s | 3.3 |
| 2012 | 25.2°C | 8.6°C | 16.9°C | 2 mm | 77% | 1.1 m/s | 3.3 |
| 2011 | 25.8°C | 8.8°C | 17.3°C | 1 mm | 80% | 1.2 m/s | 3.4 |
| 2010 | 24.6°C | 9.4°C | 17.0°C | 4 mm | 78% | 1.3 m/s | 3.7 |
| 2009 | 24.1°C | 9.0°C | 16.6°C | 7 mm | 85% | 1.1 m/s | 3.1 |
| 2008 | 26.1°C | 11.7°C | 18.9°C | 3 mm | 83% | 1.2 m/s | 3.2 |
| 2007 | 23.5°C | 9.5°C | 16.5°C | 2 mm | 79% | 1.2 m/s | 3.7 |
| 2006 | 24.0°C | 9.9°C | 17.0°C | 10 mm | 78% | 1.2 m/s | 3.4 |
| 2005 | 22.9°C | 10.2°C | 16.6°C | 0 mm | 76% | 1.3 m/s | 4 |
| 2004 | 24.2°C | 7.2°C | 15.7°C | 1 mm | 80% | 1.3 m/s | 3.6 |
| 2003 | 23.4°C | 9.3°C | 16.3°C | 12 mm | 78% | 1.3 m/s | 3.6 |
| 2002 | 24.8°C | 8.6°C | 16.7°C | 9 mm | 79% | 1.2 m/s | 3.3 |
| 2001 | 25.2°C | 10.3°C | 17.7°C | 0 mm | 72% | 1.2 m/s | 3.6 |
| 2000 | 23.2°C | 9.9°C | 16.5°C | 1 mm | 73% | 1.2 m/s | 3.9 |
| 1999 | 24.5°C | 10.1°C | 17.3°C | 1 mm | 74% | 1.4 m/s | 3.9 |
| 1998 | 24.6°C | 10.1°C | 17.4°C | 0 mm | 70% | 1.3 m/s | 3.7 |
| 1997 | 24.5°C | 9.3°C | 16.9°C | 23 mm | 74% | 1.2 m/s | 3.2 |
| 1996 | 25.2°C | 9.6°C | 17.4°C | 0 mm | 65% | 1.3 m/s | 4 |
| 1995 | 23.5°C | 10.3°C | 16.9°C | 3 mm | 77% | 1.3 m/s | 3.4 |
| 1994 | 26.0°C | 8.7°C | 17.4°C | 0 mm | 61% | 1.4 m/s | 3.8 |
| 1993 | 25.2°C | 10.8°C | 18.0°C | 1 mm | 74% | 1.4 m/s | 3.8 |
| 1992 | 23.8°C | 8.9°C | 16.3°C | 9 mm | 69% | 1.5 m/s | 3.7 |
| 1991 | 24.5°C | 6.6°C | 15.5°C | 12 mm | 75% | 1.4 m/s | 3.6 |
| 1990 | 23.8°C | 10.6°C | 17.2°C | 0 mm | 77% | 1.3 m/s | 3.9 |
| 1989 | 23.7°C | 8.3°C | 16.0°C | 3 mm | 72% | 1.4 m/s | 3.8 |
| 1988 | 25.5°C | 11.2°C | 18.4°C | 11 mm | 78% | 1.4 m/s | 3.7 |
| 1987 | 25.0°C | 10.5°C | 17.8°C | 1 mm | 74% | 1.3 m/s | 3.7 |
| 1986 | 24.8°C | 9.3°C | 17.1°C | 6 mm | 70% | 1.4 m/s | 3.6 |
| 1985 | 25.1°C | 8.9°C | 17.0°C | 15 mm | 71% | 1.4 m/s | 3.5 |
| 1984 | 24.5°C | 8.2°C | 16.3°C | 5 mm | 74% | 1.3 m/s | 3.6 |
| 1983 ❄️ | 24.0°C | 7.0°C | 15.5°C | 9 mm | 71% | 1.3 m/s | — |
| 1982 | 23.0°C | 8.2°C | 15.6°C | 0 mm | 74% | 1.4 m/s | — |
| 1981 🌧️ | 24.9°C | 9.4°C | 17.1°C | 52 mm | 79% | 1.3 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 24.7°C with lows near 9.7°C (mean 17.2°C), based on 45 years of NASA POWER data.
December averages 5 mm of rainfall in Bongaigaon, one of the drier months. The wettest on record was 52 mm in 1981.
The hottest December reached 26.4°C in 2015. The coldest dipped to 6.6°C in 1991.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.6°C. Daytime highs moved from 24.3°C to 25°C and overnight lows from 8.3°C to 10.9°C over the same span.
December is one of the cooler months of the year in Bongaigaon and one of the drier months, so plan for around 24.7°C daytime highs and 9.7°C at night.
Not quite — December is the 2nd coolest month in Bongaigaon, averaging 17.2°C.
For December in Bongaigaon, pack light layers you can adjust through the day, with typical highs of 24.7°C and lows of 9.7°C.
Relative humidity in December averages 76% — quite humid.
Average wind speed in December is 1.3 m/s. The windiest December on record averaged 1.5 m/s (1992).
The wettest December on record was 1981 with 52 mm. On average, December 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 Bongaigaon 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.
