December is one of the cooler months of the year in Tiruvannamalai, with average highs near 30.2°C and lows around 16.9°C (mean 23.5°C). It is a relatively wet time of year, averaging 114 mm of rainfall and 83% relative humidity across the period.
December is one of the cooler months of the year in Tiruvannamalai. Across 45 years of records, the warmest December in Tiruvannamalai was 2018 — when the month averaged 25.4°C — while the coldest were 1981 and 2008 at 22.1°C. Typical December days reach 30.2°C with nights near 16.9°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 | 23.6°C | 23.4°C | 22.9°C | 24.0°C | 24.1°C | +0.5°C |
| Avg High | 30.3°C | 30.0°C | 29.7°C | 30.7°C | 30.4°C | +0.1°C |
| Avg Low | 17.0°C | 16.8°C | 16.2°C | 17.2°C | 17.7°C | +0.7°C |
| Avg Rain | 105 mm | 141 mm | 91 mm | 98 mm | 146 mm | +41 mm |
December temperatures in Tiruvannamalai have risen by about 0.9°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 14.8°C (1981) to a record high of 32.7°C (2016).
Rainfall in December is a relatively wet time of year, averaging 114 mm, with a wettest year of 372 mm.
One of the best times to visit Tiruvannamalai
December is one of the best times to visit Tiruvannamalai. Expect days averaging 30.2°C and nights around 16.9°C (mean 23.5°C) — cooler than Tiruvannamalai's yearly average — with higher rainfall (114 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 30.1°C | 16.5°C | 23.3°C | 52 mm | 83% | 2.8 m/s | — |
| 2024 | 31.0°C | 18.8°C | 24.9°C | 267 mm | 88% | 2.7 m/s | 3.6 |
| 2023 | 32.1°C | 18.5°C | 25.3°C | 81 mm | 86% | 3.1 m/s | 3.5 |
| 2022 | 29.9°C | 18.8°C | 24.4°C | 131 mm | 87% | 2.8 m/s | 3.8 |
| 2021 | 30.9°C | 16.0°C | 23.5°C | 65 mm | 85% | 2.5 m/s | 4.4 |
| 2020 | 28.4°C | 17.3°C | 22.9°C | 278 mm | 87% | 2.9 m/s | 3.8 |
| 2019 | 29.1°C | 19.4°C | 24.3°C | 100 mm | 86% | 2.7 m/s | 3.9 |
| 2018 🔥 | 32.5°C | 18.3°C | 25.4°C | 38 mm | 82% | 2.6 m/s | 4.2 |
| 2017 | 29.8°C | 17.4°C | 23.6°C | 71 mm | 84% | 2.6 m/s | 4.4 |
| 2016 | 32.7°C | 16.3°C | 24.5°C | 86 mm | 73% | 2.7 m/s | 4.3 |
| 2015 | 29.3°C | 17.6°C | 23.4°C | 229 mm | 88% | 2.6 m/s | 4.1 |
| 2014 | 30.2°C | 16.7°C | 23.5°C | 72 mm | 85% | 3 m/s | 3.7 |
| 2013 | 32.4°C | 15.8°C | 24.1°C | 49 mm | 76% | 2.9 m/s | 4.4 |
| 2012 | 30.8°C | 18.2°C | 24.5°C | 47 mm | 82% | 3 m/s | 4.3 |
| 2011 | 30.4°C | 16.0°C | 23.2°C | 104 mm | 83% | 2.9 m/s | 4.1 |
| 2010 | 30.2°C | 16.2°C | 23.2°C | 185 mm | 88% | 2.6 m/s | 3.3 |
| 2009 | 29.2°C | 18.0°C | 23.6°C | 142 mm | 86% | 2.9 m/s | 3.8 |
| 2008 | 28.9°C | 15.3°C | 22.1°C | 43 mm | 85% | 2.4 m/s | 4.7 |
| 2007 | 29.3°C | 15.6°C | 22.4°C | 225 mm | 85% | 2.7 m/s | 3.9 |
| 2006 | 28.7°C | 16.3°C | 22.5°C | 55 mm | 82% | 2.9 m/s | 4.3 |
| 2005 | 29.2°C | 16.5°C | 22.8°C | 173 mm | 88% | 3 m/s | 3.8 |
| 2004 | 29.1°C | 15.5°C | 22.3°C | 27 mm | 82% | 2.8 m/s | 4.8 |
| 2003 | 32.1°C | 16.6°C | 24.3°C | 15 mm | 79% | 2.8 m/s | 4.6 |
| 2002 | 30.5°C | 16.5°C | 23.5°C | 55 mm | 80% | 2.7 m/s | 4.7 |
| 2001 | 29.9°C | 16.1°C | 23.0°C | 92 mm | 81% | 3.1 m/s | 4.2 |
| 2000 | 30.2°C | 15.6°C | 22.9°C | 78 mm | 81% | 3 m/s | 4.5 |
| 1999 | 29.2°C | 15.9°C | 22.6°C | 88 mm | 83% | 2.9 m/s | 4.4 |
| 1998 | 29.7°C | 16.0°C | 22.9°C | 248 mm | 84% | 3.1 m/s | 3.9 |
| 1997 | 29.8°C | 19.7°C | 24.7°C | 254 mm | 88% | 2.3 m/s | 3.9 |
| 1996 🌧️ | 31.1°C | 15.2°C | 23.1°C | 372 mm | 85% | 2.8 m/s | 3.8 |
| 1995 | 30.5°C | 16.8°C | 23.7°C | 7 mm | 73% | 2.9 m/s | 4.8 |
| 1994 | 30.1°C | 15.3°C | 22.7°C | 111 mm | 79% | 2.9 m/s | 4.7 |
| 1993 | 28.4°C | 17.5°C | 23.0°C | 232 mm | 88% | 3.2 m/s | 3.6 |
| 1992 | 29.0°C | 16.0°C | 22.5°C | 63 mm | 80% | 3.1 m/s | 4.4 |
| 1991 | 30.4°C | 17.2°C | 23.8°C | 23 mm | 83% | 2.6 m/s | 4.4 |
| 1990 | 31.8°C | 17.9°C | 24.8°C | 8 mm | 79% | 3.2 m/s | 4.4 |
| 1989 | 29.8°C | 17.1°C | 23.4°C | 75 mm | 83% | 2.7 m/s | 4.5 |
| 1988 | 31.5°C | 16.6°C | 24.1°C | 52 mm | 79% | 2.8 m/s | 4.7 |
| 1987 | 30.7°C | 17.3°C | 24.0°C | 226 mm | 85% | 3.1 m/s | 3.5 |
| 1986 | 30.6°C | 17.7°C | 24.1°C | 86 mm | 82% | 2.8 m/s | 4.4 |
| 1985 | 29.1°C | 16.9°C | 23.0°C | 71 mm | 85% | 2.6 m/s | 4.7 |
| 1984 | 31.5°C | 15.9°C | 23.7°C | 48 mm | 78% | 2.6 m/s | 4.6 |
| 1983 | 29.3°C | 18.4°C | 23.8°C | 274 mm | 86% | 3 m/s | — |
| 1982 | 30.7°C | 17.9°C | 24.3°C | 25 mm | 77% | 3 m/s | — |
| 1981 ❄️ | 29.4°C | 14.8°C | 22.1°C | 87 mm | 85% | 2.7 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 16.9°C (mean 23.5°C), based on 45 years of NASA POWER data.
December averages 114 mm of rainfall in Tiruvannamalai, a relatively wet time of year. The wettest on record was 372 mm in 1996.
The hottest December reached 32.7°C in 2016. The coldest dipped to 14.8°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.9°C. Daytime highs moved from 30°C to 30.8°C and overnight lows from 16.8°C to 17.7°C over the same span.
December is one of the cooler months of the year in Tiruvannamalai and a relatively wet time of year, so plan for around 30.2°C daytime highs and 16.9°C at night.
Yes — December is the coldest month of the year in Tiruvannamalai, averaging 23.5°C.
For December in Tiruvannamalai, pack light, breathable clothing and sun protection, with typical highs of 30.2°C and lows of 16.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 83% — quite humid.
Average wind speed in December is 2.8 m/s. The windiest December on record averaged 3.2 m/s (1990).
The wettest December on record was 1996 with 372 mm. On average, December sees 114 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 Tiruvannamalai 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.
