December is one of the cooler months of the year in Thiruvananthapuram, with average highs near 30.2°C and lows around 20.7°C (mean 25.5°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 27.4°C — while the coldest was 1992 at 23.7°C. Typical December days reach 30.2°C with nights near 20.7°C. The long-term December temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.1°C | 25.1°C | 24.8°C | 25.7°C | 25.7°C | -0.4°C |
| Avg High | 31.1°C | 30.1°C | 29.8°C | 30.1°C | 30.0°C | -1.1°C |
| Avg Low | 21.0°C | 20.2°C | 19.9°C | 21.3°C | 21.4°C | +0.4°C |
| Avg Rain | 72 mm | 58 mm | 30 mm | 95 mm | 86 mm | +13 mm |
December temperatures in Thiruvananthapuram have fallen by about 0.4°C between 1981–1985 and 2021–2025.
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 0.2°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 30.2°C and nights around 20.7°C (mean 25.5°C) — cooler than Thiruvananthapuram's yearly average — with moderate rainfall (66 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 29.5°C | 19.7°C | 24.6°C | 6 mm | 80% | 2.7 m/s | — |
| 2024 | 30.3°C | 22.6°C | 26.4°C | 74 mm | 81% | 2.4 m/s | 4.9 |
| 2023 | 30.2°C | 22.7°C | 26.4°C | 216 mm | 85% | 3.5 m/s | 4.9 |
| 2022 | 30.4°C | 21.8°C | 26.1°C | 95 mm | 80% | 2.5 m/s | 4.5 |
| 2021 | 29.6°C | 20.6°C | 25.1°C | 67 mm | 83% | 2.7 m/s | 5.4 |
| 2020 | 29.8°C | 21.1°C | 25.4°C | 56 mm | 82% | 3.2 m/s | 4.5 |
| 2019 | 29.8°C | 22.6°C | 26.2°C | 55 mm | 84% | 3.2 m/s | 4.8 |
| 2018 | 30.4°C | 22.4°C | 26.4°C | 23 mm | 78% | 2.3 m/s | 4.8 |
| 2017 | 29.5°C | 19.7°C | 24.5°C | 94 mm | 82% | 2.8 m/s | 5.1 |
| 2016 🔥 | 33.2°C | 21.7°C | 27.4°C | 24 mm | 70% | 2.5 m/s | 5 |
| 2015 | 29.6°C | 21.2°C | 25.4°C | 172 mm | 85% | 2.8 m/s | 4.7 |
| 2014 | 29.3°C | 21.0°C | 25.1°C | 92 mm | 83% | 3.1 m/s | 4.4 |
| 2013 | 29.9°C | 20.8°C | 25.3°C | 39 mm | 78% | 2.8 m/s | 5 |
| 2012 | 31.0°C | 21.6°C | 26.3°C | 56 mm | 76% | 3.3 m/s | 4.9 |
| 2011 | 30.0°C | 20.7°C | 25.4°C | 236 mm | 79% | 2.9 m/s | 4.8 |
| 2010 | 28.7°C | 21.1°C | 24.9°C | 159 mm | 83% | 2.5 m/s | 4.5 |
| 2009 | 30.2°C | 20.8°C | 25.5°C | 38 mm | 80% | 2.8 m/s | 4.9 |
| 2008 | 29.2°C | 18.9°C | 24.0°C | 17 mm | 81% | 2.8 m/s | 5.1 |
| 2007 | 29.5°C | 19.3°C | 24.4°C | 11 mm | 81% | 3.3 m/s | 4.9 |
| 2006 | 29.2°C | 19.6°C | 24.4°C | 4 mm | 83% | 3.8 m/s | 5.1 |
| 2005 | 29.2°C | 20.5°C | 24.9°C | 101 mm | 84% | 2.7 m/s | 4.9 |
| 2004 | 29.8°C | 19.9°C | 24.8°C | 19 mm | 80% | 3.4 m/s | 5.4 |
| 2003 | 30.2°C | 19.6°C | 24.9°C | 12 mm | 78% | 3 m/s | 5.6 |
| 2002 | 29.5°C | 20.7°C | 25.1°C | 5 mm | 79% | 3 m/s | 4.8 |
| 2001 | 29.4°C | 19.5°C | 24.5°C | 35 mm | 82% | 3.3 m/s | 5.4 |
| 2000 | 31.3°C | 19.7°C | 25.5°C | 56 mm | 72% | 2.8 m/s | 5.2 |
| 1999 | 29.7°C | 20.1°C | 24.9°C | 17 mm | 78% | 3 m/s | 5.4 |
| 1998 | 29.6°C | 20.3°C | 24.9°C | 176 mm | 83% | 2.6 m/s | 4.5 |
| 1997 | 30.0°C | 22.1°C | 26.1°C | 89 mm | 85% | 2.6 m/s | 4.4 |
| 1996 | 29.2°C | 20.0°C | 24.6°C | 77 mm | 80% | 2.6 m/s | 4.2 |
| 1995 | 31.6°C | 20.1°C | 25.9°C | 0 mm | 71% | 3.3 m/s | 5.4 |
| 1994 | 31.0°C | 18.9°C | 25.0°C | 25 mm | 76% | 3.3 m/s | 5.3 |
| 1993 | 29.3°C | 20.6°C | 24.9°C | 143 mm | 83% | 2.9 m/s | 4.2 |
| 1992 ❄️ | 28.8°C | 18.7°C | 23.7°C | 25 mm | 83% | 3.7 m/s | 5 |
| 1991 | 30.4°C | 19.6°C | 25.0°C | 10 mm | 78% | 3.1 m/s | 4.7 |
| 1990 | 31.3°C | 21.1°C | 26.2°C | 18 mm | 75% | 3.3 m/s | 4.8 |
| 1989 | 31.5°C | 20.7°C | 26.1°C | 17 mm | 77% | 3.4 m/s | 5.2 |
| 1988 | 31.5°C | 21.0°C | 26.3°C | 31 mm | 73% | 2.9 m/s | 5.1 |
| 1987 🌧️ | 29.2°C | 20.6°C | 24.9°C | 312 mm | 83% | 2.2 m/s | 4.7 |
| 1986 | 32.5°C | 21.6°C | 27.1°C | 17 mm | 70% | 2.7 m/s | 5 |
| 1985 | 31.4°C | 20.5°C | 26.0°C | 46 mm | 74% | 2.6 m/s | 4.8 |
| 1984 | 32.3°C | 20.7°C | 26.5°C | 5 mm | 65% | 2.2 m/s | 5.1 |
| 1983 | 31.0°C | 22.4°C | 26.7°C | 178 mm | 77% | 3.1 m/s | — |
| 1982 | 31.5°C | 21.3°C | 26.4°C | 24 mm | 75% | 3.6 m/s | — |
| 1981 | 29.0°C | 20.3°C | 24.7°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 30.2°C with lows near 20.7°C (mean 25.5°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 0.4°C. Daytime highs moved from 31°C to 30°C and overnight lows from 21°C to 21.5°C over the same span.
December is one of the cooler months of the year in Thiruvananthapuram and one of the drier months, so plan for around 30.2°C daytime highs and 20.7°C at night.
Yes — December is the coldest month of the year in Thiruvananthapuram, averaging 25.5°C.
For December in Thiruvananthapuram, pack light, breathable clothing and sun protection, with typical highs of 30.2°C and lows of 20.7°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.
