December is one of the cooler months of the year in Tirunelveli, with average highs near 30°C and lows around 16.8°C (mean 23.4°C). It is one of the drier months, averaging 70 mm of rainfall and 85% relative humidity across the period.
December is one of the cooler months of the year in Tirunelveli. Across 45 years of records, the warmest Decembers in Tirunelveli were 1986 and 2018 — when the month averaged 25.4°C — while the coldest was 1992 at 21.3°C. Typical December days reach 30°C with nights near 16.8°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 | 24.0°C | 22.9°C | 22.6°C | 23.7°C | 24.1°C | +0.1°C |
| Avg High | 30.9°C | 29.7°C | 29.3°C | 30.1°C | 30.4°C | -0.5°C |
| Avg Low | 17.1°C | 16.3°C | 15.8°C | 17.4°C | 17.8°C | +0.7°C |
| Avg Rain | 74 mm | 57 mm | 30 mm | 89 mm | 119 mm | +45 mm |
December temperatures in Tirunelveli have stayed relatively stable across the record.
December has ranged from a record low of 14.6°C (2007) to a record high of 33.8°C (1984).
Rainfall in December is one of the drier months, averaging 70 mm, with a wettest year of 347 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 Tirunelveli
December is one of the best times to visit Tirunelveli. Expect days averaging 30°C and nights around 16.8°C (mean 23.4°C) — cooler than Tirunelveli's yearly average — with moderate rainfall (70 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 30.2°C | 15.7°C | 22.9°C | 9 mm | 86% | 2.3 m/s | — |
| 2024 | 31.2°C | 19.1°C | 25.1°C | 99 mm | 85% | 2.1 m/s | 4.4 |
| 2023 🌧️ | 29.6°C | 20.1°C | 24.9°C | 347 mm | 90% | 2.9 m/s | 4 |
| 2022 | 32.0°C | 18.3°C | 25.2°C | 99 mm | 84% | 2.2 m/s | 4.1 |
| 2021 | 30.1°C | 15.7°C | 22.9°C | 78 mm | 89% | 2.3 m/s | 4.8 |
| 2020 | 29.2°C | 17.9°C | 23.5°C | 82 mm | 88% | 2.6 m/s | 3.9 |
| 2019 | 29.0°C | 19.3°C | 24.1°C | 81 mm | 90% | 2.7 m/s | 4.1 |
| 2018 | 32.2°C | 18.7°C | 25.4°C | 17 mm | 78% | 2.1 m/s | 4.5 |
| 2017 | 29.0°C | 16.5°C | 22.7°C | 108 mm | 87% | 2.3 m/s | 4.6 |
| 2016 | 33.1°C | 17.3°C | 25.2°C | 27 mm | 73% | 2.3 m/s | 4.7 |
| 2015 | 29.1°C | 17.7°C | 23.4°C | 177 mm | 91% | 2.4 m/s | 4 |
| 2014 | 29.0°C | 17.5°C | 23.3°C | 100 mm | 90% | 2.6 m/s | 3.9 |
| 2013 | 30.1°C | 16.8°C | 23.4°C | 46 mm | 82% | 2.4 m/s | 4.5 |
| 2012 | 30.9°C | 17.5°C | 24.2°C | 57 mm | 82% | 3 m/s | 4.3 |
| 2011 | 30.1°C | 16.3°C | 23.2°C | 136 mm | 84% | 2.5 m/s | 4.4 |
| 2010 | 28.5°C | 16.6°C | 22.6°C | 142 mm | 89% | 2.1 m/s | 4.1 |
| 2009 | 29.4°C | 17.5°C | 23.5°C | 41 mm | 87% | 2.5 m/s | 4.3 |
| 2008 | 28.5°C | 15.1°C | 21.8°C | 15 mm | 86% | 2.6 m/s | 4.5 |
| 2007 | 29.9°C | 14.6°C | 22.3°C | 13 mm | 84% | 2.9 m/s | 4.4 |
| 2006 | 28.1°C | 15.4°C | 21.7°C | 6 mm | 88% | 3.2 m/s | 4.7 |
| 2005 | 29.6°C | 16.3°C | 22.9°C | 105 mm | 89% | 2 m/s | 4.6 |
| 2004 | 29.0°C | 15.5°C | 22.2°C | 22 mm | 85% | 3.1 m/s | 4.7 |
| 2003 | 29.9°C | 15.7°C | 22.8°C | 4 mm | 84% | 2.6 m/s | 5.1 |
| 2002 | 28.3°C | 16.2°C | 22.3°C | 10 mm | 87% | 2.7 m/s | 4.4 |
| 2001 | 28.1°C | 16.0°C | 22.0°C | 39 mm | 88% | 2.9 m/s | 4.6 |
| 2000 | 32.4°C | 15.6°C | 24.0°C | 47 mm | 79% | 2.7 m/s | 4.9 |
| 1999 | 28.4°C | 16.0°C | 22.2°C | 15 mm | 84% | 2.6 m/s | 4.8 |
| 1998 | 28.5°C | 15.7°C | 22.1°C | 189 mm | 90% | 2.3 m/s | 3.9 |
| 1997 | 28.8°C | 18.6°C | 23.7°C | 79 mm | 91% | 2.2 m/s | 4.3 |
| 1996 | 29.4°C | 15.4°C | 22.4°C | 63 mm | 86% | 2 m/s | 4.5 |
| 1995 | 31.2°C | 16.3°C | 23.7°C | 0 mm | 77% | 3 m/s | 5.4 |
| 1994 | 30.7°C | 14.8°C | 22.7°C | 26 mm | 81% | 2.9 m/s | 5.2 |
| 1993 | 28.6°C | 17.5°C | 23.0°C | 146 mm | 90% | 2.7 m/s | 4 |
| 1992 ❄️ | 27.6°C | 15.0°C | 21.3°C | 26 mm | 88% | 3.2 m/s | 4.8 |
| 1991 | 32.3°C | 15.2°C | 23.7°C | 10 mm | 82% | 2.6 m/s | 4.9 |
| 1990 | 31.1°C | 18.0°C | 24.5°C | 20 mm | 83% | 2.8 m/s | 4.6 |
| 1989 | 31.5°C | 17.1°C | 24.3°C | 17 mm | 82% | 3 m/s | 5 |
| 1988 | 30.6°C | 16.5°C | 23.5°C | 29 mm | 80% | 2.6 m/s | 5 |
| 1987 | 29.0°C | 17.1°C | 23.0°C | 323 mm | 88% | 1.7 m/s | 4.6 |
| 1986 🔥 | 32.5°C | 18.3°C | 25.4°C | 20 mm | 77% | 2.9 m/s | 4.8 |
| 1985 | 30.4°C | 16.6°C | 23.5°C | 42 mm | 83% | 2.5 m/s | 4.8 |
| 1984 | 33.8°C | 15.7°C | 24.8°C | 5 mm | 72% | 2.1 m/s | 5.1 |
| 1983 | 31.1°C | 18.8°C | 25.0°C | 181 mm | 84% | 2.5 m/s | — |
| 1982 | 30.3°C | 17.7°C | 24.0°C | 28 mm | 82% | 3 m/s | — |
| 1981 | 28.6°C | 16.4°C | 22.5°C | 22 mm | 88% | 2.3 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 30°C with lows near 16.8°C (mean 23.4°C), based on 45 years of NASA POWER data.
December averages 70 mm of rainfall in Tirunelveli, one of the drier months. The wettest on record was 347 mm in 2023.
The hottest December reached 33.8°C in 1984. The coldest dipped to 14.6°C in 2007.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.2°C. Daytime highs moved from 30.8°C to 30.6°C and overnight lows from 17°C to 17.8°C over the same span.
December is one of the cooler months of the year in Tirunelveli and one of the drier months, so plan for around 30°C daytime highs and 16.8°C at night.
Yes — December is the coldest month of the year in Tirunelveli, averaging 23.4°C.
For December in Tirunelveli, pack light, breathable clothing and sun protection, with typical highs of 30°C and lows of 16.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 85% — quite humid.
Average wind speed in December is 2.6 m/s. The windiest December on record averaged 3.2 m/s (1992).
The wettest December on record was 2023 with 347 mm. On average, December sees 70 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 Tirunelveli 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.
