December is one of the cooler months of the year in Dibang Valley, with average highs near 11°C and lows around -6.8°C (mean 2.1°C). It is one of the drier months, averaging 6 mm of rainfall and 75% relative humidity across the period.
December is one of the cooler months of the year in Dibang Valley. Across 45 years of records, the warmest December in Dibang Valley was 2017 — when the month averaged 4.8°C — while the coldest was 1982 at -0.4°C. Typical December days reach 11°C with nights near -6.8°C. The long-term trend is warming, about 0.4°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 1.5°C | 1.5°C | 2.4°C | 2.5°C | 2.7°C | +1.2°C |
| Avg High | 11.2°C | 10.2°C | 11.4°C | 11.2°C | 10.9°C | -0.3°C |
| Avg Low | -8.0°C | -7.2°C | -6.5°C | -6.2°C | -5.6°C | +2.4°C |
| Avg Rain | 11 mm | 4 mm | 2 mm | 4 mm | 8 mm | -3 mm |
December temperatures in Dibang Valley have risen by about 1.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -10.9°C (1982) to a record high of 13.7°C (2016).
Rainfall in December is one of the drier months, averaging 6 mm, with a wettest year of 32 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.1°C per decade while lows rose 0.6°C per decade, narrowing the gap between day and night.
A quieter season to visit Dibang Valley
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Dibang Valley. That said, December — with days averaging 11°C and nights around -6.8°C (mean 2.1°C) and low rainfall (6 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 12.1°C | -4.7°C | 3.7°C | 4 mm | 76% | 1.3 m/s | — |
| 2024 | 10.3°C | -4.5°C | 2.9°C | 1 mm | 77% | 1.4 m/s | 3.4 |
| 2023 | 10.5°C | -5.1°C | 2.7°C | 9 mm | 77% | 1.4 m/s | 3.2 |
| 2022 | 10.7°C | -6.7°C | 2.0°C | 13 mm | 85% | 1.3 m/s | 2.8 |
| 2021 | 12.0°C | -7.4°C | 2.2°C | 11 mm | 80% | 1.4 m/s | 3.2 |
| 2020 | 9.6°C | -4.9°C | 2.4°C | 6 mm | 83% | 1.4 m/s | 3.2 |
| 2019 | 8.9°C | -6.5°C | 1.2°C | 2 mm | 79% | 1.5 m/s | 3 |
| 2018 | 9.1°C | -7.0°C | 1.0°C | 8 mm | 77% | 1.4 m/s | 3.4 |
| 2017 🔥 | 13.3°C | -3.6°C | 4.8°C | 0 mm | 81% | 1.3 m/s | 3.6 |
| 2016 | 13.7°C | -4.5°C | 4.6°C | 4 mm | 73% | 1.4 m/s | 3.5 |
| 2015 | 11.1°C | -8.8°C | 1.2°C | 8 mm | 82% | 1.4 m/s | 2.8 |
| 2014 | 11.6°C | -5.2°C | 3.2°C | 1 mm | 81% | 1.5 m/s | 3.1 |
| 2013 | 10.7°C | -8.3°C | 1.2°C | 2 mm | 80% | 1.3 m/s | 3 |
| 2012 | 12.1°C | -5.0°C | 3.6°C | 5 mm | 81% | 1.5 m/s | 3 |
| 2011 | 11.2°C | -5.0°C | 3.1°C | 8 mm | 77% | 1.4 m/s | 3.2 |
| 2010 | 10.2°C | -7.8°C | 1.2°C | 2 mm | 70% | 1.3 m/s | 3.7 |
| 2009 | 11.1°C | -6.2°C | 2.4°C | 3 mm | 78% | 1.3 m/s | 2.7 |
| 2008 | 12.7°C | -6.1°C | 3.3°C | 1 mm | 73% | 1.3 m/s | 3.2 |
| 2007 | 10.7°C | -5.9°C | 2.4°C | 2 mm | 69% | 1.3 m/s | 3.4 |
| 2006 | 11.5°C | -5.2°C | 3.1°C | 4 mm | 74% | 1.4 m/s | 3.2 |
| 2005 | 11.7°C | -5.4°C | 3.1°C | 0 mm | 69% | 1.3 m/s | 3.9 |
| 2004 | 10.8°C | -9.0°C | 0.9°C | 5 mm | 73% | 1.3 m/s | 3.3 |
| 2003 | 11.6°C | -8.2°C | 1.7°C | 2 mm | 76% | 1.3 m/s | 3.3 |
| 2002 | 11.3°C | -7.0°C | 2.1°C | 1 mm | 72% | 1.2 m/s | 3.3 |
| 2001 | 10.8°C | -5.7°C | 2.5°C | 2 mm | 70% | 1.3 m/s | 3.4 |
| 2000 | 11.7°C | -5.9°C | 2.9°C | 1 mm | 64% | 1.2 m/s | 3.6 |
| 1999 | 10.3°C | -7.1°C | 1.6°C | 1 mm | 74% | 1.2 m/s | 3.6 |
| 1998 | 11.6°C | -8.7°C | 1.5°C | 9 mm | 63% | 1.3 m/s | 3.7 |
| 1997 | 9.0°C | -7.0°C | 1.0°C | 10 mm | 76% | 1.2 m/s | 3.1 |
| 1996 | 9.7°C | -5.3°C | 2.2°C | 0 mm | 68% | 1.3 m/s | 3.8 |
| 1995 | 8.5°C | -6.1°C | 1.2°C | 7 mm | 83% | 1.3 m/s | 2.9 |
| 1994 | 9.8°C | -7.6°C | 1.1°C | 0 mm | 68% | 1.3 m/s | 3.5 |
| 1993 | 12.0°C | -6.4°C | 2.8°C | 0 mm | 71% | 1.3 m/s | 3.4 |
| 1992 | 9.9°C | -8.5°C | 0.7°C | 1 mm | 68% | 1.1 m/s | 3.7 |
| 1991 | 11.3°C | -10.2°C | 0.6°C | 15 mm | 71% | 1.3 m/s | 3.3 |
| 1990 | 10.0°C | -5.1°C | 2.5°C | 1 mm | 77% | 1.3 m/s | 3.4 |
| 1989 | 10.5°C | -10.7°C | -0.1°C | 7 mm | 69% | 1.2 m/s | 3.6 |
| 1988 | 13.4°C | -4.6°C | 4.4°C | 3 mm | 77% | 1.3 m/s | 3.5 |
| 1987 | 13.0°C | -6.7°C | 3.1°C | 7 mm | 68% | 1.4 m/s | 3.7 |
| 1986 | 11.3°C | -10.0°C | 0.6°C | 7 mm | 73% | 1.3 m/s | 3.3 |
| 1985 🌧️ | 11.2°C | -8.9°C | 1.1°C | 32 mm | 77% | 1.3 m/s | 3.3 |
| 1984 | 9.6°C | -5.8°C | 1.9°C | 11 mm | 78% | 1.5 m/s | 3.2 |
| 1983 | 10.7°C | -9.4°C | 0.6°C | 12 mm | 74% | 1.3 m/s | — |
| 1982 ❄️ | 10.2°C | -10.9°C | -0.4°C | 5 mm | 78% | 1.5 m/s | — |
| 1981 | 10.7°C | -5.4°C | 2.7°C | 13 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 11°C with lows near -6.8°C (mean 2.1°C), based on 45 years of NASA POWER data.
December averages 6 mm of rainfall in Dibang Valley, one of the drier months. The wettest on record was 32 mm in 1985.
The hottest December reached 13.7°C in 2016. The coldest dipped to -10.9°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.5°C. Daytime highs moved from 10.5°C to 11.1°C and overnight lows from -8.1°C to -5.7°C over the same span.
December is one of the cooler months of the year in Dibang Valley and one of the drier months, so plan for around 11°C daytime highs and -6.8°C at night.
Not quite — December is the 2nd coolest month in Dibang Valley, averaging 2.1°C.
For December in Dibang Valley, pack warm layers and a jacket for chilly mornings, with typical highs of 11°C and lows of -6.8°C.
Relative humidity in December averages 75% — moderately humid.
Average wind speed in December is 1.3 m/s. The windiest December on record averaged 1.5 m/s (1982).
The wettest December on record was 1985 with 32 mm. On average, December sees 6 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 Dibang Valley 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.
