December is one of the cooler months of the year in Ranchi, with average highs near 23.8°C and lows around 10.3°C (mean 17.1°C). It is one of the drier months, averaging 11 mm of rainfall and 62% relative humidity across the period.
December is one of the cooler months of the year in Ranchi. Across 45 years of records, the warmest December in Ranchi was 1988 — when the month averaged 19.1°C — while the coldest was 2025 at 14.5°C. Typical December days reach 23.8°C with nights near 10.3°C. The long-term trend is cooling, about 0.3°C per decade.
December is one of the drier months in Ranchi, averaging 11 mm of rainfall. The wettest December on record was 1986 with 62 mm, while the driest were 2016, 2022 and 2025, among others at 0 mm.
Relative humidity in Ranchi during December averages 62%. The most humid December was 2019 at 82%, and the least humid was 1992 at 43%.
December receives about 3.7 kWh/m²/day of solar energy in Ranchi. The sunniest Decembers were 1985 and 2000 at 4.3 kWh/m²/day, and the cloudiest was 2015 at 2.9.
Average wind speed in Ranchi during December is 1.4 m/s. The windiest Decembers were 1982 and 2012 at 1.9 m/s, while the calmest was 2011 at 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 | 16.8°C | 17.3°C | 16.8°C | 16.5°C | -1.4°C |
| Avg High | 25.1°C | 23.5°C | 24.1°C | 23.5°C | 22.7°C | -2.4°C |
| Avg Low | 10.8°C | 10.0°C | 10.5°C | 10.1°C | 10.2°C | -0.6°C |
| Avg Rain | 13 mm | 13 mm | 4 mm | 12 mm | 15 mm | +2 mm |
December temperatures in Ranchi have fallen by about 1.3°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 2.5°C (2019) to a record high of 29.6°C (2015).
Rainfall in December is one of the drier months, averaging 11 mm, with a wettest year of 62 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.5°C per decade while lows fell 0.1°C per decade, narrowing the gap between day and night.
A good time to visit Ranchi
December is a good time to visit Ranchi, with days averaging 23.8°C and nights around 10.3°C (mean 17.1°C, cooler than Ranchi's yearly average) and low rainfall. February and November are marginally more temperate, but December still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 ❄️ | 21.3°C | 14.5°C | 7.6°C | 23.2°C | 4.3°C | 0 mm | 80% | 1.4 m/s | — |
| 2024 | 23.2°C | 17.3°C | 11.4°C | 26.2°C | 5.8°C | 5 mm | 73% | 1.4 m/s | 3.4 |
| 2023 | 22.5°C | 16.8°C | 11.1°C | 27.1°C | 6.2°C | 56 mm | 73% | 1.3 m/s | 3.3 |
| 2022 | 23.8°C | 16.9°C | 10.0°C | 26.7°C | 7.0°C | 0 mm | 66% | 1.5 m/s | 3.5 |
| 2021 | 21.7°C | 16.3°C | 10.9°C | 24.2°C | 3.5°C | 28 mm | 79% | 1.5 m/s | 3.2 |
| 2020 | 23.7°C | 17.1°C | 10.4°C | 26.2°C | 5.3°C | 1 mm | 68% | 1.4 m/s | 3.2 |
| 2019 | 21.0°C | 15.3°C | 9.6°C | 24.3°C | 2.5°C | 21 mm | 82% | 1.4 m/s | 3 |
| 2018 | 22.7°C | 16.1°C | 9.6°C | 25.4°C | 3.7°C | 52 mm | 62% | 1.5 m/s | 3.3 |
| 2017 | 23.9°C | 17.5°C | 11.1°C | 26.1°C | 6.8°C | 1 mm | 64% | 1.4 m/s | 3.7 |
| 2016 | 24.1°C | 16.9°C | 9.7°C | 25.8°C | 6.8°C | 0 mm | 70% | 1.5 m/s | 3.8 |
| 2015 | 25.7°C | 19.0°C | 12.3°C | 29.6°C | 6.6°C | 5 mm | 58% | 1.3 m/s | 2.9 |
| 2014 | 24.1°C | 16.5°C | 8.9°C | 27.3°C | 4.0°C | 8 mm | 54% | 1.6 m/s | 3.6 |
| 2013 | 22.7°C | 16.5°C | 10.3°C | 24.3°C | 7.3°C | 0 mm | 74% | 1.3 m/s | 3.5 |
| 2012 | 23.0°C | 15.7°C | 8.5°C | 26.5°C | 2.9°C | 10 mm | 66% | 1.9 m/s | 3.7 |
| 2011 | 23.6°C | 17.0°C | 10.3°C | 26.7°C | 5.4°C | 1 mm | 67% | 1 m/s | 3.6 |
| 2010 | 23.9°C | 17.2°C | 10.4°C | 26.0°C | 5.8°C | 26 mm | 61% | 1.4 m/s | 3.5 |
| 2009 | 24.4°C | 17.8°C | 11.1°C | 27.0°C | 7.3°C | 6 mm | 61% | 1.3 m/s | 3.6 |
| 2008 | 24.9°C | 18.4°C | 11.9°C | 27.6°C | 7.8°C | 0 mm | 70% | 1.1 m/s | 3.4 |
| 2007 | 23.0°C | 16.2°C | 9.4°C | 25.2°C | 5.8°C | 0 mm | 66% | 1.6 m/s | 3.8 |
| 2006 | 24.0°C | 17.3°C | 10.6°C | 27.0°C | 7.4°C | 0 mm | 65% | 1.5 m/s | 3.7 |
| 2005 | 25.1°C | 17.7°C | 10.3°C | 27.5°C | 6.5°C | 16 mm | 53% | 1.5 m/s | 3.9 |
| 2004 | 23.7°C | 17.3°C | 11.0°C | 25.7°C | 5.2°C | 2 mm | 66% | 1.2 m/s | 3.6 |
| 2003 | 21.7°C | 16.0°C | 10.2°C | 24.3°C | 5.5°C | 14 mm | 75% | 1.3 m/s | 3.9 |
| 2002 | 24.7°C | 17.7°C | 10.7°C | 27.3°C | 7.4°C | 3 mm | 57% | 1.5 m/s | 3.9 |
| 2001 | 24.5°C | 17.3°C | 10.1°C | 26.8°C | 7.1°C | 0 mm | 55% | 1.4 m/s | 4 |
| 2000 | 25.0°C | 17.1°C | 9.2°C | 26.5°C | 6.5°C | 0 mm | 48% | 1.5 m/s | 4.3 |
| 1999 | 23.4°C | 16.9°C | 10.5°C | 24.2°C | 7.3°C | 0 mm | 65% | 1.3 m/s | 4 |
| 1998 | 22.7°C | 16.0°C | 9.2°C | 24.5°C | 5.4°C | 0 mm | 64% | 1.4 m/s | 4.1 |
| 1997 | 21.4°C | 16.1°C | 10.8°C | 25.7°C | 6.1°C | 43 mm | 80% | 1.4 m/s | 3.2 |
| 1996 | 24.3°C | 16.3°C | 8.2°C | 26.4°C | 5.0°C | 0 mm | 47% | 1.6 m/s | 3.7 |
| 1995 | 23.5°C | 17.0°C | 10.5°C | 27.1°C | 8.1°C | 29 mm | 66% | 1.5 m/s | 3.8 |
| 1994 | 23.5°C | 16.7°C | 9.8°C | 26.5°C | 5.6°C | 0 mm | 54% | 1.4 m/s | 4.2 |
| 1993 | 23.6°C | 16.5°C | 9.4°C | 25.8°C | 6.1°C | 0 mm | 54% | 1.3 m/s | 4.1 |
| 1992 | 26.1°C | 18.2°C | 10.4°C | 27.3°C | 7.4°C | 0 mm | 43% | 1.5 m/s | 4.1 |
| 1991 | 23.1°C | 16.8°C | 10.4°C | 26.9°C | 6.1°C | 58 mm | 62% | 1.4 m/s | 3.9 |
| 1990 | 23.7°C | 17.2°C | 10.7°C | 25.7°C | 6.1°C | 0 mm | 62% | 1.5 m/s | 4.2 |
| 1989 | 25.5°C | 18.0°C | 10.5°C | 28.3°C | 6.6°C | 17 mm | 47% | 1.5 m/s | 4.1 |
| 1988 🔥 | 26.3°C | 19.1°C | 11.8°C | 29.4°C | 7.5°C | 3 mm | 53% | 1.4 m/s | 4.1 |
| 1987 | 24.2°C | 17.2°C | 10.2°C | 27.8°C | 7.2°C | 5 mm | 64% | 1.4 m/s | 4.1 |
| 1986 🌧️ | 25.1°C | 18.5°C | 12.0°C | 27.8°C | 7.4°C | 62 mm | 60% | 1.4 m/s | 3.7 |
| 1985 | 24.4°C | 17.5°C | 10.6°C | 27.5°C | 5.8°C | 1 mm | 65% | 1.6 m/s | 4.3 |
| 1984 | 25.5°C | 17.7°C | 9.9°C | 29.4°C | 4.9°C | 0 mm | 49% | 1.8 m/s | 4.2 |
| 1983 | 25.2°C | 18.1°C | 11.1°C | 28.3°C | 5.7°C | 17 mm | 48% | 1.4 m/s | — |
| 1982 | 25.8°C | 18.3°C | 10.8°C | 27.9°C | 7.8°C | 0 mm | 51% | 1.9 m/s | — |
| 1981 | 23.5°C | 16.9°C | 10.3°C | 25.3°C | 6.4°C | 12 mm | 65% | 1.6 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 23.8°C with lows near 10.3°C (mean 17.1°C), based on 45 years of NASA POWER data.
December averages 11 mm of rainfall in Ranchi, one of the drier months. The wettest on record was 62 mm in 1986.
The hottest December reached 29.6°C in 2015. The coldest dipped to 2.5°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have fallen by about 1.3°C. Daytime highs moved from 24.9°C to 22.5°C and overnight lows from 10.5°C to 10.2°C over the same span.
December is one of the cooler months of the year in Ranchi and one of the drier months, so plan for around 23.8°C daytime highs and 10.3°C at night.
Not quite — December is the 2nd coolest month in Ranchi, averaging 17.1°C.
For December in Ranchi, pack light layers you can adjust through the day, with typical highs of 23.8°C and lows of 10.3°C.
Relative humidity in December averages 62% — moderately humid.
Average wind speed in December is 1.4 m/s. The windiest December on record averaged 1.9 m/s (1982).
The wettest December on record was 1986 with 62 mm. On average, December sees 11 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 Ranchi 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.
