December is one of the cooler months of the year in Thiruvananthapuram, with average highs near 28.9°C and lows around 23.2°C (mean 26.1°C). It is one of the drier months, averaging 66 mm of rainfall and 79% relative humidity across the period.
December is one of the cooler months of the year in Thiruvananthapuram. Across 45 years of records, the warmest December in Thiruvananthapuram was 2016 — when the month averaged 27.7°C — while the coldest was 1992 at 24.7°C. Typical December days reach 28.9°C with nights near 23.2°C. The long-term December temperature trend is broadly flat.
December is one of the drier months in Thiruvananthapuram, averaging 66 mm of rainfall. The wettest December on record was 1987 with 312 mm, while the driest was 1995 at 0 mm.
Relative humidity in Thiruvananthapuram during December averages 79%. The most humid Decembers were 1997 and 2023 at 85%, and the least humid was 1984 at 65%.
December receives about 4.9 kWh/m²/day of solar energy in Thiruvananthapuram. The sunniest December was 2003 at 5.6 kWh/m²/day, and the cloudiest were 1993 and 1996 at 4.2.
Average wind speed in Thiruvananthapuram during December is 2.9 m/s. The windiest December was 2006 at 3.8 m/s, while the calmest were 1984 and 1987 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.5°C | 25.7°C | 25.6°C | 26.3°C | 26.3°C | -0.2°C |
| Avg High | 29.6°C | 28.6°C | 28.5°C | 29.0°C | 28.9°C | -0.7°C |
| Avg Low | 23.3°C | 22.7°C | 22.6°C | 23.6°C | 23.8°C | +0.5°C |
| Avg Rain | 72 mm | 58 mm | 30 mm | 95 mm | 86 mm | +13 mm |
December temperatures in Thiruvananthapuram have stayed relatively stable across the record.
December has ranged from a record low of 18.7°C (1992) to a record high of 33.2°C (2016).
Rainfall in December is one of the drier months, averaging 66 mm, with a wettest year of 312 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
One of the best times to visit Thiruvananthapuram
December is one of the best times to visit Thiruvananthapuram. Expect days averaging 28.9°C and nights around 23.2°C (mean 26.1°C) — cooler than Thiruvananthapuram's yearly average — with moderate rainfall (66 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 | 28.5°C | 25.4°C | 22.3°C | 29.5°C | 19.7°C | 6 mm | 80% | 2.7 m/s | — |
| 2024 | 29.2°C | 27.0°C | 24.8°C | 30.3°C | 22.6°C | 74 mm | 81% | 2.4 m/s | 4.9 |
| 2023 | 28.9°C | 26.8°C | 24.7°C | 30.2°C | 22.7°C | 216 mm | 85% | 3.5 m/s | 4.9 |
| 2022 | 29.2°C | 26.6°C | 24.0°C | 30.4°C | 21.8°C | 95 mm | 80% | 2.5 m/s | 4.5 |
| 2021 | 28.7°C | 25.9°C | 23.1°C | 29.6°C | 20.6°C | 67 mm | 83% | 2.7 m/s | 5.4 |
| 2020 | 28.7°C | 26.2°C | 23.7°C | 29.8°C | 21.1°C | 56 mm | 82% | 3.2 m/s | 4.5 |
| 2019 | 29.0°C | 26.5°C | 24.0°C | 29.8°C | 22.6°C | 55 mm | 84% | 3.2 m/s | 4.8 |
| 2018 | 29.6°C | 26.7°C | 23.9°C | 30.4°C | 22.4°C | 23 mm | 78% | 2.3 m/s | 4.8 |
| 2017 | 28.5°C | 25.9°C | 23.3°C | 29.5°C | 19.7°C | 94 mm | 82% | 2.8 m/s | 5.1 |
| 2016 🔥 | 31.2°C | 27.7°C | 24.2°C | 33.2°C | 21.7°C | 24 mm | 70% | 2.5 m/s | 5 |
| 2015 | 28.3°C | 26.1°C | 23.9°C | 29.6°C | 21.2°C | 172 mm | 85% | 2.8 m/s | 4.7 |
| 2014 | 28.2°C | 25.8°C | 23.5°C | 29.3°C | 21.0°C | 92 mm | 83% | 3.1 m/s | 4.4 |
| 2013 | 28.9°C | 26.0°C | 23.1°C | 29.9°C | 20.8°C | 39 mm | 78% | 2.8 m/s | 5 |
| 2012 | 30.0°C | 26.9°C | 23.8°C | 31.0°C | 21.6°C | 56 mm | 76% | 3.3 m/s | 4.9 |
| 2011 | 28.8°C | 26.0°C | 23.2°C | 30.0°C | 20.7°C | 236 mm | 79% | 2.9 m/s | 4.8 |
| 2010 | 27.3°C | 25.4°C | 23.4°C | 28.7°C | 21.1°C | 159 mm | 83% | 2.5 m/s | 4.5 |
| 2009 | 29.0°C | 26.4°C | 23.7°C | 30.2°C | 20.8°C | 38 mm | 80% | 2.8 m/s | 4.9 |
| 2008 | 28.3°C | 25.3°C | 22.4°C | 29.2°C | 18.9°C | 17 mm | 81% | 2.8 m/s | 5.1 |
| 2007 | 28.1°C | 25.3°C | 22.5°C | 29.5°C | 19.3°C | 11 mm | 81% | 3.3 m/s | 4.9 |
| 2006 | 28.0°C | 25.0°C | 22.1°C | 29.2°C | 19.6°C | 4 mm | 83% | 3.8 m/s | 5.1 |
| 2005 | 27.9°C | 25.7°C | 23.5°C | 29.2°C | 20.5°C | 101 mm | 84% | 2.7 m/s | 4.9 |
| 2004 | 28.7°C | 25.4°C | 22.0°C | 29.8°C | 19.9°C | 19 mm | 80% | 3.4 m/s | 5.4 |
| 2003 | 29.0°C | 25.6°C | 22.3°C | 30.2°C | 19.6°C | 12 mm | 78% | 3 m/s | 5.6 |
| 2002 | 28.1°C | 25.4°C | 22.6°C | 29.5°C | 20.7°C | 5 mm | 79% | 3 m/s | 4.8 |
| 2001 | 28.3°C | 25.4°C | 22.5°C | 29.4°C | 19.5°C | 35 mm | 82% | 3.3 m/s | 5.4 |
| 2000 | 29.8°C | 26.0°C | 22.2°C | 31.3°C | 19.7°C | 56 mm | 72% | 2.8 m/s | 5.2 |
| 1999 | 28.6°C | 25.6°C | 22.5°C | 29.7°C | 20.1°C | 17 mm | 78% | 3 m/s | 5.4 |
| 1998 | 27.6°C | 25.4°C | 23.2°C | 29.6°C | 20.3°C | 176 mm | 83% | 2.6 m/s | 4.5 |
| 1997 | 28.7°C | 26.6°C | 24.5°C | 30.0°C | 22.1°C | 89 mm | 85% | 2.6 m/s | 4.4 |
| 1996 | 27.8°C | 25.3°C | 22.7°C | 29.2°C | 20.0°C | 77 mm | 80% | 2.6 m/s | 4.2 |
| 1995 | 29.9°C | 25.8°C | 21.7°C | 31.6°C | 20.1°C | 0 mm | 71% | 3.3 m/s | 5.4 |
| 1994 | 29.1°C | 25.5°C | 21.8°C | 31.0°C | 18.9°C | 25 mm | 76% | 3.3 m/s | 5.3 |
| 1993 | 27.9°C | 25.6°C | 23.2°C | 29.3°C | 20.6°C | 143 mm | 83% | 2.9 m/s | 4.2 |
| 1992 ❄️ | 27.8°C | 24.7°C | 21.7°C | 28.8°C | 18.7°C | 25 mm | 83% | 3.7 m/s | 5 |
| 1991 | 28.7°C | 25.6°C | 22.5°C | 30.4°C | 19.6°C | 10 mm | 78% | 3.1 m/s | 4.7 |
| 1990 | 29.7°C | 26.6°C | 23.5°C | 31.3°C | 21.1°C | 18 mm | 75% | 3.3 m/s | 4.8 |
| 1989 | 29.5°C | 26.1°C | 22.6°C | 31.5°C | 20.7°C | 17 mm | 77% | 3.4 m/s | 5.2 |
| 1988 | 29.7°C | 26.3°C | 23.0°C | 31.5°C | 21.0°C | 31 mm | 73% | 2.9 m/s | 5.1 |
| 1987 🌧️ | 28.0°C | 26.1°C | 24.2°C | 29.2°C | 20.6°C | 312 mm | 83% | 2.2 m/s | 4.7 |
| 1986 | 31.3°C | 27.6°C | 23.9°C | 32.5°C | 21.6°C | 17 mm | 70% | 2.7 m/s | 5 |
| 1985 | 29.8°C | 26.4°C | 23.1°C | 31.4°C | 20.5°C | 46 mm | 74% | 2.6 m/s | 4.8 |
| 1984 | 31.1°C | 27.1°C | 23.1°C | 32.3°C | 20.7°C | 5 mm | 65% | 2.2 m/s | 5.1 |
| 1983 | 29.3°C | 26.6°C | 23.9°C | 31.0°C | 22.4°C | 178 mm | 77% | 3.1 m/s | — |
| 1982 | 29.8°C | 26.5°C | 23.1°C | 31.5°C | 21.3°C | 24 mm | 75% | 3.6 m/s | — |
| 1981 | 28.1°C | 25.6°C | 23.0°C | 29.0°C | 20.3°C | 21 mm | 82% | 2.8 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 28.9°C with lows near 23.2°C (mean 26.1°C), based on 45 years of NASA POWER data.
December averages 66 mm of rainfall in Thiruvananthapuram, one of the drier months. The wettest on record was 312 mm in 1987.
The hottest December reached 33.2°C in 2016. The coldest dipped to 18.7°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have fallen by about 0.1°C — but days and nights have moved in opposite directions. Overnight lows rose from 23.2°C to 23.8°C while daytime highs eased from 29.6°C to 28.9°C, narrowing the gap between day and night.
December is one of the cooler months of the year in Thiruvananthapuram and one of the drier months, so plan for around 28.9°C daytime highs and 23.2°C at night.
Not quite — December is the 3rd coolest month in Thiruvananthapuram, averaging 26.1°C.
For December in Thiruvananthapuram, pack light layers you can adjust through the day, with typical highs of 28.9°C and lows of 23.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 79% — quite humid.
Average wind speed in December is 2.9 m/s. The windiest December on record averaged 3.8 m/s (2006).
The wettest December on record was 1987 with 312 mm. On average, December sees 66 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 Thiruvananthapuram 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.
