December is one of the cooler months of the year in Jamui, with average highs near 24.5°C and lows around 10.5°C (mean 17.5°C). It is one of the drier months, averaging 6 mm of rainfall and 58% relative humidity across the period.
December is one of the cooler months of the year in Jamui. Across 45 years of records, the warmest Decembers in Jamui were 1988 and 2015 — when the month averaged 19.3°C — while the coldest was 2019 at 15.2°C. Typical December days reach 24.5°C with nights near 10.5°C. The long-term trend is cooling, about 0.3°C per decade.
December is one of the drier months in Jamui, averaging 6 mm of rainfall. The wettest December on record was 1995 with 34 mm, while the driest were 2020, 2022 and 2025, among others at 0 mm.
Relative humidity in Jamui during December averages 58%. The most humid Decembers were 2019 and 2021 at 79%, and the least humid was 1992 at 36%.
December receives about 3.6 kWh/m²/day of solar energy in Jamui. The sunniest Decembers were 1984 and 1988 at 4.3 kWh/m²/day, and the cloudiest were 2015 and 2019 at 2.9.
Average wind speed in Jamui during December is 1.5 m/s. The windiest December was 2012 at 2.1 m/s, while the calmest was 2008 at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.9°C | 17.7°C | 17.6°C | 17.1°C | 17.0°C | -0.9°C |
| Avg High | 25.1°C | 25.1°C | 24.5°C | 24.0°C | 23.3°C | -1.8°C |
| Avg Low | 10.7°C | 10.3°C | 10.7°C | 10.3°C | 10.6°C | -0.1°C |
| Avg Rain | 10 mm | 9 mm | 2 mm | 4 mm | 4 mm | -6 mm |
December temperatures in Jamui have fallen by about 0.6°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 2.7°C (2019) to a record high of 31°C (2015).
Rainfall in December is one of the drier months, averaging 6 mm, with a wettest year of 34 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.5°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
One of the best times to visit Jamui
December is one of the best times to visit Jamui. Expect days averaging 24.5°C and nights around 10.5°C (mean 17.5°C) — cooler than Jamui's yearly average — with low rainfall (6 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 21.9°C | 15.3°C | 8.6°C | 24.7°C | 6.4°C | 0 mm | 78% | 1.6 m/s | — |
| 2024 | 24.6°C | 17.9°C | 11.3°C | 27.0°C | 5.9°C | 0 mm | 66% | 1.4 m/s | 3.3 |
| 2023 | 23.1°C | 17.4°C | 11.6°C | 27.4°C | 7.7°C | 17 mm | 74% | 1.5 m/s | 3.2 |
| 2022 | 25.0°C | 17.7°C | 10.4°C | 27.4°C | 7.1°C | 0 mm | 59% | 1.7 m/s | 3.4 |
| 2021 | 22.1°C | 16.6°C | 11.1°C | 25.7°C | 4.8°C | 9 mm | 79% | 1.6 m/s | 3.2 |
| 2020 | 23.2°C | 16.8°C | 10.3°C | 25.8°C | 5.3°C | 0 mm | 67% | 1.6 m/s | 3.1 |
| 2019 ❄️ | 20.8°C | 15.2°C | 9.5°C | 24.8°C | 2.7°C | 9 mm | 79% | 1.6 m/s | 2.9 |
| 2018 | 24.4°C | 17.4°C | 10.4°C | 27.8°C | 5.0°C | 14 mm | 51% | 1.6 m/s | 3.2 |
| 2017 | 24.4°C | 17.9°C | 11.4°C | 27.0°C | 6.8°C | 1 mm | 64% | 1.4 m/s | 3.5 |
| 2016 | 24.3°C | 17.2°C | 10.0°C | 27.5°C | 7.4°C | 0 mm | 70% | 1.7 m/s | 3.4 |
| 2015 | 26.3°C | 19.3°C | 12.4°C | 31.0°C | 7.3°C | 1 mm | 48% | 1.4 m/s | 2.9 |
| 2014 | 23.7°C | 16.3°C | 8.9°C | 28.1°C | 5.3°C | 3 mm | 54% | 1.8 m/s | 3.4 |
| 2013 | 24.7°C | 17.8°C | 11.0°C | 26.3°C | 8.1°C | 0 mm | 65% | 1.6 m/s | 3.4 |
| 2012 | 22.8°C | 15.5°C | 8.2°C | 26.3°C | 3.9°C | 2 mm | 59% | 2.1 m/s | 3.5 |
| 2011 | 23.7°C | 17.0°C | 10.2°C | 26.7°C | 5.7°C | 0 mm | 63% | 1.2 m/s | 3.3 |
| 2010 | 24.5°C | 17.8°C | 11.2°C | 28.4°C | 6.5°C | 7 mm | 54% | 1.4 m/s | 3.4 |
| 2009 | 24.5°C | 17.7°C | 10.9°C | 27.1°C | 6.6°C | 3 mm | 56% | 1.5 m/s | 3.4 |
| 2008 | 25.0°C | 18.7°C | 12.4°C | 27.8°C | 8.3°C | 0 mm | 71% | 1.1 m/s | 3 |
| 2007 | 22.1°C | 15.5°C | 9.0°C | 24.2°C | 5.7°C | 0 mm | 70% | 1.4 m/s | 3.7 |
| 2006 | 24.4°C | 17.7°C | 11.1°C | 27.3°C | 7.3°C | 1 mm | 62% | 1.4 m/s | 3.6 |
| 2005 | 25.4°C | 17.8°C | 10.3°C | 27.8°C | 6.7°C | 3 mm | 51% | 1.5 m/s | 3.8 |
| 2004 | 25.4°C | 18.7°C | 12.1°C | 27.6°C | 6.2°C | 0 mm | 58% | 1.2 m/s | 3.4 |
| 2003 | 23.8°C | 17.4°C | 11.0°C | 27.2°C | 6.8°C | 10 mm | 66% | 1.3 m/s | 3.8 |
| 2002 | 25.5°C | 18.1°C | 10.8°C | 27.5°C | 8.0°C | 3 mm | 49% | 1.4 m/s | 3.7 |
| 2001 | 24.4°C | 17.0°C | 9.6°C | 26.2°C | 8.0°C | 0 mm | 55% | 1.3 m/s | 3.8 |
| 2000 | 24.9°C | 17.2°C | 9.4°C | 26.1°C | 7.3°C | 0 mm | 45% | 1.4 m/s | 4 |
| 1999 | 26.3°C | 18.6°C | 10.9°C | 27.6°C | 7.5°C | 0 mm | 51% | 1.3 m/s | 4 |
| 1998 | 24.4°C | 17.0°C | 9.6°C | 26.4°C | 6.0°C | 0 mm | 60% | 1.3 m/s | 3.9 |
| 1997 | 22.0°C | 16.3°C | 10.6°C | 27.2°C | 5.8°C | 25 mm | 74% | 1.6 m/s | 3.1 |
| 1996 | 25.3°C | 16.7°C | 8.2°C | 27.2°C | 5.4°C | 0 mm | 42% | 1.6 m/s | 3.7 |
| 1995 🌧️ | 24.5°C | 17.5°C | 10.6°C | 26.8°C | 7.9°C | 34 mm | 59% | 1.6 m/s | 3.7 |
| 1994 | 25.7°C | 17.8°C | 9.9°C | 28.7°C | 4.2°C | 0 mm | 44% | 1.6 m/s | 4.2 |
| 1993 | 25.0°C | 17.3°C | 9.6°C | 27.0°C | 6.8°C | 0 mm | 51% | 1.4 m/s | 4.1 |
| 1992 | 26.7°C | 18.9°C | 11.1°C | 28.8°C | 7.7°C | 1 mm | 36% | 1.4 m/s | 4.1 |
| 1991 | 25.5°C | 18.4°C | 11.3°C | 27.7°C | 7.3°C | 26 mm | 50% | 1.3 m/s | 4 |
| 1990 | 25.9°C | 18.5°C | 11.1°C | 27.5°C | 6.6°C | 0 mm | 50% | 1.4 m/s | 4.2 |
| 1989 | 25.7°C | 18.3°C | 10.8°C | 29.3°C | 6.3°C | 15 mm | 41% | 1.4 m/s | 4.1 |
| 1988 🔥 | 26.5°C | 19.3°C | 12.1°C | 29.5°C | 7.7°C | 16 mm | 47% | 1.4 m/s | 4.3 |
| 1987 | 23.9°C | 16.9°C | 9.9°C | 25.7°C | 7.4°C | 2 mm | 66% | 1.3 m/s | 4.2 |
| 1986 | 25.6°C | 18.7°C | 11.9°C | 28.9°C | 6.9°C | 29 mm | 52% | 1.4 m/s | 3.8 |
| 1985 | 23.4°C | 16.9°C | 10.5°C | 26.1°C | 7.2°C | 5 mm | 71% | 1.6 m/s | 4.2 |
| 1984 | 25.3°C | 17.3°C | 9.3°C | 28.5°C | 4.2°C | 0 mm | 49% | 1.8 m/s | 4.3 |
| 1983 | 25.6°C | 18.3°C | 11.0°C | 28.6°C | 6.1°C | 10 mm | 42% | 1.6 m/s | — |
| 1982 | 25.8°C | 18.2°C | 10.5°C | 28.1°C | 8.0°C | 1 mm | 45% | 1.8 m/s | — |
| 1981 | 24.1°C | 17.1°C | 10.0°C | 26.3°C | 6.6°C | 16 mm | 61% | 1.6 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 24.5°C with lows near 10.5°C (mean 17.5°C), based on 45 years of NASA POWER data.
December averages 6 mm of rainfall in Jamui, one of the drier months. The wettest on record was 34 mm in 1995.
The hottest December reached 31°C in 2015. The coldest dipped to 2.7°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have fallen by about 0.6°C — but days and nights have moved in opposite directions. Overnight lows rose from 10.3°C to 10.6°C while daytime highs eased from 24.8°C to 23.3°C, narrowing the gap between day and night.
December is one of the cooler months of the year in Jamui and one of the drier months, so plan for around 24.5°C daytime highs and 10.5°C at night.
Not quite — December is the 2nd coolest month in Jamui, averaging 17.5°C.
For December in Jamui, pack light layers you can adjust through the day, with typical highs of 24.5°C and lows of 10.5°C.
Relative humidity in December averages 58% — moderately humid.
Average wind speed in December is 1.5 m/s. The windiest December on record averaged 2.1 m/s (2012).
The wettest December on record was 1995 with 34 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 Jamui 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.
