December is one of the cooler months of the year in Tirunelveli, with average highs near 27.9°C and lows around 20.2°C (mean 24°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 December in Tirunelveli was 2016 — when the month averaged 26.2°C — while the coldest was 1992 at 22.6°C. Typical December days reach 27.9°C with nights near 20.2°C. The long-term December temperature trend is broadly flat.
December is one of the drier months in Tirunelveli, averaging 70 mm of rainfall. The wettest December on record was 2023 with 347 mm, while the driest was 1995 at 0 mm.
Relative humidity in Tirunelveli during December averages 85%. The most humid December was 2015 at 91%, and the least humid was 1984 at 72%.
December receives about 4.5 kWh/m²/day of solar energy in Tirunelveli. The sunniest December was 1995 at 5.4 kWh/m²/day, and the cloudiest were 1998, 2014 and 2020 at 3.9.
Average wind speed in Tirunelveli during December is 2.6 m/s. The windiest Decembers were 1992 and 2006 at 3.2 m/s, while the calmest was 1987 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.5°C | 23.6°C | 23.5°C | 24.5°C | 24.4°C | -0.1°C |
| Avg High | 28.7°C | 27.5°C | 27.4°C | 28.3°C | 28.0°C | -0.7°C |
| Avg Low | 20.3°C | 19.7°C | 19.6°C | 20.7°C | 20.9°C | +0.6°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 rose about 0°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 27.9°C and nights around 20.2°C (mean 24°C) — cooler than Tirunelveli's yearly average — with moderate rainfall (70 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 | 27.6°C | 23.3°C | 19.0°C | 30.2°C | 15.7°C | 9 mm | 86% | 2.3 m/s | — |
| 2024 | 29.3°C | 25.6°C | 21.8°C | 31.2°C | 19.1°C | 99 mm | 85% | 2.1 m/s | 4.4 |
| 2023 🌧️ | 27.6°C | 24.9°C | 22.3°C | 29.6°C | 20.1°C | 347 mm | 90% | 2.9 m/s | 4 |
| 2022 | 28.7°C | 24.9°C | 21.0°C | 32.0°C | 18.3°C | 99 mm | 84% | 2.2 m/s | 4.1 |
| 2021 | 27.4°C | 23.8°C | 20.2°C | 30.1°C | 15.7°C | 78 mm | 89% | 2.3 m/s | 4.8 |
| 2020 | 27.3°C | 24.1°C | 20.9°C | 29.2°C | 17.9°C | 82 mm | 88% | 2.6 m/s | 3.9 |
| 2019 | 27.4°C | 24.4°C | 21.4°C | 29.0°C | 19.3°C | 81 mm | 90% | 2.7 m/s | 4.1 |
| 2018 | 30.4°C | 25.7°C | 21.0°C | 32.2°C | 18.7°C | 17 mm | 78% | 2.1 m/s | 4.5 |
| 2017 | 27.5°C | 24.0°C | 20.5°C | 29.0°C | 16.5°C | 108 mm | 87% | 2.3 m/s | 4.6 |
| 2016 🔥 | 31.7°C | 26.2°C | 20.6°C | 33.1°C | 17.3°C | 27 mm | 73% | 2.3 m/s | 4.7 |
| 2015 | 26.9°C | 24.1°C | 21.3°C | 29.1°C | 17.7°C | 177 mm | 91% | 2.4 m/s | 4 |
| 2014 | 26.7°C | 23.8°C | 20.9°C | 29.0°C | 17.5°C | 100 mm | 90% | 2.6 m/s | 3.9 |
| 2013 | 28.6°C | 24.3°C | 20.1°C | 30.1°C | 16.8°C | 46 mm | 82% | 2.4 m/s | 4.5 |
| 2012 | 29.1°C | 25.1°C | 21.1°C | 30.9°C | 17.5°C | 57 mm | 82% | 3 m/s | 4.3 |
| 2011 | 28.0°C | 24.1°C | 20.1°C | 30.1°C | 16.3°C | 136 mm | 84% | 2.5 m/s | 4.4 |
| 2010 | 26.5°C | 23.4°C | 20.2°C | 28.5°C | 16.6°C | 142 mm | 89% | 2.1 m/s | 4.1 |
| 2009 | 27.7°C | 24.4°C | 21.0°C | 29.4°C | 17.5°C | 41 mm | 87% | 2.5 m/s | 4.3 |
| 2008 | 27.3°C | 23.3°C | 19.4°C | 28.5°C | 15.1°C | 15 mm | 86% | 2.6 m/s | 4.5 |
| 2007 | 27.6°C | 23.7°C | 19.8°C | 29.9°C | 14.6°C | 13 mm | 84% | 2.9 m/s | 4.4 |
| 2006 | 26.5°C | 22.8°C | 19.2°C | 28.1°C | 15.4°C | 6 mm | 88% | 3.2 m/s | 4.7 |
| 2005 | 27.2°C | 23.8°C | 20.3°C | 29.6°C | 16.3°C | 105 mm | 89% | 2 m/s | 4.6 |
| 2004 | 27.4°C | 23.2°C | 19.0°C | 29.0°C | 15.5°C | 22 mm | 85% | 3.1 m/s | 4.7 |
| 2003 | 28.0°C | 23.5°C | 19.1°C | 29.9°C | 15.7°C | 4 mm | 84% | 2.6 m/s | 5.1 |
| 2002 | 26.5°C | 23.0°C | 19.5°C | 28.3°C | 16.2°C | 10 mm | 87% | 2.7 m/s | 4.4 |
| 2001 | 26.7°C | 23.2°C | 19.7°C | 28.1°C | 16.0°C | 39 mm | 88% | 2.9 m/s | 4.6 |
| 2000 | 28.9°C | 23.9°C | 18.8°C | 32.4°C | 15.6°C | 47 mm | 79% | 2.7 m/s | 4.9 |
| 1999 | 27.2°C | 23.3°C | 19.3°C | 28.4°C | 16.0°C | 15 mm | 84% | 2.6 m/s | 4.8 |
| 1998 | 26.3°C | 23.2°C | 20.2°C | 28.5°C | 15.7°C | 189 mm | 90% | 2.3 m/s | 3.9 |
| 1997 | 27.5°C | 24.7°C | 21.9°C | 28.8°C | 18.6°C | 79 mm | 91% | 2.2 m/s | 4.3 |
| 1996 | 27.2°C | 23.2°C | 19.3°C | 29.4°C | 15.4°C | 63 mm | 86% | 2 m/s | 4.5 |
| 1995 | 29.2°C | 23.9°C | 18.6°C | 31.2°C | 16.3°C | 0 mm | 77% | 3 m/s | 5.4 |
| 1994 | 28.1°C | 23.3°C | 18.4°C | 30.7°C | 14.8°C | 26 mm | 81% | 2.9 m/s | 5.2 |
| 1993 | 26.3°C | 23.3°C | 20.3°C | 28.6°C | 17.5°C | 146 mm | 90% | 2.7 m/s | 4 |
| 1992 ❄️ | 26.3°C | 22.6°C | 18.9°C | 27.6°C | 15.0°C | 26 mm | 88% | 3.2 m/s | 4.8 |
| 1991 | 28.3°C | 23.8°C | 19.4°C | 32.3°C | 15.2°C | 10 mm | 82% | 2.6 m/s | 4.9 |
| 1990 | 28.5°C | 24.6°C | 20.7°C | 31.1°C | 18.0°C | 20 mm | 83% | 2.8 m/s | 4.6 |
| 1989 | 28.7°C | 24.3°C | 19.8°C | 31.5°C | 17.1°C | 17 mm | 82% | 3 m/s | 5 |
| 1988 | 28.9°C | 24.4°C | 19.9°C | 30.6°C | 16.5°C | 29 mm | 80% | 2.6 m/s | 5 |
| 1987 | 27.2°C | 24.2°C | 21.3°C | 29.0°C | 17.1°C | 323 mm | 88% | 1.7 m/s | 4.6 |
| 1986 | 30.5°C | 25.9°C | 21.3°C | 32.5°C | 18.3°C | 20 mm | 77% | 2.9 m/s | 4.8 |
| 1985 | 28.5°C | 24.4°C | 20.4°C | 30.4°C | 16.6°C | 42 mm | 83% | 2.5 m/s | 4.8 |
| 1984 | 31.1°C | 25.1°C | 19.1°C | 33.8°C | 15.7°C | 5 mm | 72% | 2.1 m/s | 5.1 |
| 1983 | 28.1°C | 24.6°C | 21.1°C | 31.1°C | 18.8°C | 181 mm | 84% | 2.5 m/s | — |
| 1982 | 28.2°C | 24.2°C | 20.2°C | 30.3°C | 17.7°C | 28 mm | 82% | 3 m/s | — |
| 1981 | 26.8°C | 23.4°C | 20.0°C | 28.6°C | 16.4°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 27.9°C with lows near 20.2°C (mean 24°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 — but days and nights have moved in opposite directions. Overnight lows rose from 20.2°C to 20.9°C while daytime highs eased from 28.5°C to 28.1°C, narrowing the gap between day and night.
December is one of the cooler months of the year in Tirunelveli and one of the drier months, so plan for around 27.9°C daytime highs and 20.2°C at night.
Yes — December is the coldest month of the year in Tirunelveli, averaging 24°C.
For December in Tirunelveli, pack light layers you can adjust through the day, with typical highs of 27.9°C and lows of 20.2°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.
