December is one of the cooler months of the year in Kolkata, with average highs near 25.3°C and lows around 11.8°C (mean 18.6°C). It is one of the drier months, averaging 12 mm of rainfall and 69% relative humidity across the period.
December is one of the cooler months of the year in Kolkata. Across 45 years of records, the warmest December in Kolkata was 2015 — when the month averaged 20.4°C — while the coldest were 2012 and 2025 at 16.7°C. Typical December days reach 25.3°C with nights near 11.8°C. The long-term trend is cooling, about 0.3°C per decade.
December is one of the drier months in Kolkata, averaging 12 mm of rainfall. The wettest December on record was 2021 with 103 mm, while the driest were 2020, 2022 and 2025, among others at 0 mm.
Relative humidity in Kolkata during December averages 69%. The most humid December was 2021 at 82%, and the least humid was 1983 at 46%.
December receives about 3.8 kWh/m²/day of solar energy in Kolkata. The sunniest Decembers were 1985, 1988 and 1994 at 4.3 kWh/m²/day, and the cloudiest was 2015 at 2.7.
Average wind speed in Kolkata during December is 1.6 m/s. The windiest Decembers were 1981 and 1997 at 1.9 m/s, while the calmest was 2015 at 1.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.6°C | 18.5°C | 18.2°C | 18.3°C | 18.4°C | -1.2°C |
| Avg High | 27.1°C | 25.7°C | 24.5°C | 24.7°C | 24.3°C | -2.8°C |
| Avg Low | 12.1°C | 11.3°C | 11.8°C | 11.9°C | 12.5°C | +0.4°C |
| Avg Rain | 15 mm | 6 mm | 3 mm | 15 mm | 26 mm | +11 mm |
December temperatures in Kolkata have fallen by about 1.2°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 4.7°C (2012) to a record high of 31.3°C (1983).
Rainfall in December is one of the drier months, averaging 12 mm, with a wettest year of 103 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.7°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
One of the best times to visit Kolkata
December is one of the best times to visit Kolkata. Expect days averaging 25.3°C and nights around 11.8°C (mean 18.6°C) — cooler than Kolkata's yearly average — with low rainfall (12 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 | 22.9°C | 16.7°C | 10.6°C | 24.9°C | 7.3°C | 0 mm | 82% | 1.8 m/s | — |
| 2024 | 24.3°C | 18.7°C | 13.1°C | 27.0°C | 8.1°C | 7 mm | 79% | 1.5 m/s | 3.4 |
| 2023 | 24.9°C | 19.2°C | 13.5°C | 28.8°C | 9.0°C | 43 mm | 79% | 1.8 m/s | 3.2 |
| 2022 | 25.8°C | 19.0°C | 12.1°C | 28.6°C | 9.6°C | 0 mm | 72% | 1.6 m/s | 3.5 |
| 2021 🌧️ | 23.7°C | 18.6°C | 13.5°C | 27.1°C | 6.2°C | 103 mm | 82% | 1.6 m/s | 3.1 |
| 2020 | 24.5°C | 18.3°C | 12.1°C | 26.7°C | 6.9°C | 0 mm | 73% | 1.4 m/s | 3.3 |
| 2019 | 23.4°C | 18.0°C | 12.5°C | 27.3°C | 5.1°C | 11 mm | 79% | 1.5 m/s | 3.2 |
| 2018 | 24.7°C | 18.0°C | 11.2°C | 27.2°C | 5.7°C | 19 mm | 68% | 1.8 m/s | 3.4 |
| 2017 | 24.6°C | 18.7°C | 12.8°C | 28.1°C | 8.8°C | 26 mm | 79% | 1.6 m/s | 3.4 |
| 2016 | 24.9°C | 18.3°C | 11.7°C | 27.4°C | 8.9°C | 0 mm | 77% | 1.6 m/s | 3.6 |
| 2015 🔥 | 26.3°C | 20.4°C | 14.5°C | 29.2°C | 7.7°C | 9 mm | 67% | 1.3 m/s | 2.7 |
| 2014 | 24.3°C | 17.1°C | 9.9°C | 27.4°C | 6.5°C | 8 mm | 68% | 1.7 m/s | 3.5 |
| 2013 | 24.7°C | 18.5°C | 12.3°C | 26.5°C | 8.0°C | 0 mm | 77% | 1.4 m/s | 3.7 |
| 2012 ❄️ | 24.1°C | 16.7°C | 9.3°C | 27.6°C | 4.7°C | 19 mm | 72% | 1.8 m/s | 3.5 |
| 2011 | 25.2°C | 18.6°C | 12.1°C | 28.0°C | 7.3°C | 5 mm | 73% | 1.6 m/s | 3.4 |
| 2010 | 24.3°C | 18.3°C | 12.3°C | 26.7°C | 6.9°C | 52 mm | 72% | 1.6 m/s | 3.5 |
| 2009 | 24.8°C | 18.4°C | 12.1°C | 26.9°C | 7.5°C | 1 mm | 72% | 1.4 m/s | 3.6 |
| 2008 | 25.7°C | 19.8°C | 13.8°C | 28.1°C | 9.4°C | 2 mm | 77% | 1.4 m/s | 3.3 |
| 2007 | 23.3°C | 16.9°C | 10.5°C | 25.9°C | 6.6°C | 0 mm | 77% | 1.6 m/s | 3.8 |
| 2006 | 25.2°C | 18.6°C | 11.9°C | 27.8°C | 8.4°C | 0 mm | 74% | 1.6 m/s | 3.7 |
| 2005 | 23.9°C | 17.7°C | 11.4°C | 25.6°C | 7.0°C | 5 mm | 77% | 1.6 m/s | 4 |
| 2004 | 25.3°C | 19.2°C | 13.1°C | 27.0°C | 7.2°C | 0 mm | 76% | 1.4 m/s | 3.8 |
| 2003 | 23.7°C | 17.8°C | 11.9°C | 26.2°C | 8.2°C | 17 mm | 78% | 1.8 m/s | 3.7 |
| 2002 | 24.9°C | 18.3°C | 11.7°C | 27.6°C | 9.3°C | 0 mm | 69% | 1.4 m/s | 3.8 |
| 2001 | 23.9°C | 17.2°C | 10.6°C | 25.7°C | 8.2°C | 0 mm | 73% | 1.5 m/s | 4 |
| 2000 | 24.5°C | 17.6°C | 10.6°C | 25.8°C | 7.9°C | 0 mm | 65% | 1.5 m/s | 4.2 |
| 1999 | 25.1°C | 18.6°C | 12.0°C | 26.0°C | 7.8°C | 0 mm | 75% | 1.6 m/s | 4.2 |
| 1998 | 24.4°C | 17.7°C | 10.9°C | 25.9°C | 7.4°C | 0 mm | 75% | 1.6 m/s | 4.2 |
| 1997 | 25.1°C | 19.0°C | 12.8°C | 28.4°C | 7.8°C | 14 mm | 74% | 1.9 m/s | 3.3 |
| 1996 | 25.9°C | 17.8°C | 9.7°C | 27.5°C | 6.2°C | 0 mm | 54% | 1.8 m/s | 3.8 |
| 1995 | 24.8°C | 17.8°C | 10.8°C | 27.1°C | 7.9°C | 0 mm | 72% | 1.6 m/s | 4.2 |
| 1994 | 27.3°C | 18.9°C | 10.5°C | 29.6°C | 6.0°C | 0 mm | 54% | 1.8 m/s | 4.3 |
| 1993 | 25.4°C | 17.8°C | 10.3°C | 27.7°C | 6.9°C | 0 mm | 66% | 1.7 m/s | 4.2 |
| 1992 | 27.5°C | 19.5°C | 11.6°C | 28.5°C | 8.2°C | 0 mm | 49% | 1.6 m/s | 4.2 |
| 1991 | 25.3°C | 18.7°C | 12.1°C | 27.0°C | 7.9°C | 42 mm | 68% | 1.6 m/s | 3.9 |
| 1990 | 25.8°C | 18.9°C | 12.0°C | 27.4°C | 7.5°C | 1 mm | 67% | 1.7 m/s | 4.1 |
| 1989 | 26.6°C | 19.0°C | 11.5°C | 28.4°C | 7.9°C | 5 mm | 57% | 1.6 m/s | 4.2 |
| 1988 | 27.5°C | 20.2°C | 12.9°C | 29.3°C | 9.4°C | 9 mm | 59% | 1.6 m/s | 4.3 |
| 1987 | 27.9°C | 19.9°C | 11.8°C | 29.5°C | 8.8°C | 3 mm | 59% | 1.8 m/s | 4.1 |
| 1986 | 25.1°C | 19.0°C | 13.0°C | 27.7°C | 8.8°C | 19 mm | 72% | 1.5 m/s | 4.1 |
| 1985 | 27.8°C | 20.1°C | 12.5°C | 30.2°C | 8.8°C | 0 mm | 60% | 1.8 m/s | 4.3 |
| 1984 | 27.9°C | 19.3°C | 10.8°C | 30.2°C | 5.7°C | 0 mm | 51% | 1.8 m/s | 4.2 |
| 1983 | 28.1°C | 20.2°C | 12.3°C | 31.3°C | 7.7°C | 11 mm | 46% | 1.8 m/s | — |
| 1982 | 28.0°C | 19.9°C | 11.9°C | 29.9°C | 9.2°C | 0 mm | 49% | 1.8 m/s | — |
| 1981 | 25.0°C | 18.5°C | 11.9°C | 27.6°C | 7.6°C | 90 mm | 70% | 1.9 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 25.3°C with lows near 11.8°C (mean 18.6°C), based on 45 years of NASA POWER data.
December averages 12 mm of rainfall in Kolkata, one of the drier months. The wettest on record was 103 mm in 2021.
The hottest December reached 31.3°C in 1983. The coldest dipped to 4.7°C in 2012.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have fallen by about 1.2°C — but days and nights have moved in opposite directions. Overnight lows rose from 11.9°C to 12.6°C while daytime highs eased from 27.4°C to 24.3°C, narrowing the gap between day and night.
December is one of the cooler months of the year in Kolkata and one of the drier months, so plan for around 25.3°C daytime highs and 11.8°C at night.
Not quite — December is the 2nd coolest month in Kolkata, averaging 18.6°C.
For December in Kolkata, pack light layers you can adjust through the day, with typical highs of 25.3°C and lows of 11.8°C.
Relative humidity in December averages 69% — moderately humid.
Average wind speed in December is 1.6 m/s. The windiest December on record averaged 1.9 m/s (1981).
The wettest December on record was 2021 with 103 mm. On average, December sees 12 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 Kolkata 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.
