December is one of the cooler months of the year in Tiruchirappalli, with average highs near 29.2°C and lows around 19.4°C (mean 24.3°C). It is about average for rainfall, averaging 74 mm of rainfall and 82% relative humidity across the period.
December is one of the cooler months of the year in Tiruchirappalli. Across 45 years of records, the warmest December in Tiruchirappalli was 2016 — when the month averaged 26.4°C — while the coldest was 2004 at 22.9°C. Typical December days reach 29.2°C with nights near 19.4°C. The long-term December temperature trend is broadly flat.
December is about average for rainfall in Tiruchirappalli, averaging 74 mm of rainfall. The wettest December on record was 1996 with 227 mm, while the driest was 1990 at 3 mm.
Relative humidity in Tiruchirappalli during December averages 82%. The most humid December was 2015 at 89%, and the least humid was 2016 at 67%.
December receives about 4.3 kWh/m²/day of solar energy in Tiruchirappalli. The sunniest Decembers were 1984, 1994 and 2003 at 5 kWh/m²/day, and the cloudiest were 1993 and 2020 at 3.6.
Average wind speed in Tiruchirappalli during December is 2.5 m/s. The windiest Decembers were 1990, 2001 and 2012 at 3 m/s, while the calmest were 1997, 2021 and 2024 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.7°C | 23.9°C | 23.8°C | 24.7°C | 24.4°C | -0.3°C |
| Avg High | 30.0°C | 28.9°C | 28.8°C | 29.6°C | 28.6°C | -1.4°C |
| Avg Low | 19.5°C | 18.9°C | 18.9°C | 19.7°C | 20.2°C | +0.7°C |
| Avg Rain | 73 mm | 82 mm | 61 mm | 59 mm | 106 mm | +32 mm |
December temperatures in Tiruchirappalli have stayed relatively stable across the record.
December has ranged from a record low of 13.8°C (2008) to a record high of 35.4°C (2016).
Rainfall in December is about average for rainfall, averaging 74 mm, with a wettest year of 227 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 Tiruchirappalli
December is one of the best times to visit Tiruchirappalli. Expect days averaging 29.2°C and nights around 19.4°C (mean 24.3°C) — cooler than Tiruchirappalli's yearly average — with moderate rainfall (74 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 | 28.6°C | 23.5°C | 18.5°C | 31.4°C | 14.8°C | 35 mm | 83% | 2.4 m/s | — |
| 2024 | 28.7°C | 25.1°C | 21.4°C | 30.8°C | 18.1°C | 200 mm | 88% | 2.1 m/s | 4.1 |
| 2023 | 29.8°C | 25.6°C | 21.3°C | 31.7°C | 18.2°C | 46 mm | 84% | 2.7 m/s | 3.8 |
| 2022 | 28.6°C | 24.6°C | 20.5°C | 30.0°C | 17.6°C | 109 mm | 86% | 2.3 m/s | 4.1 |
| 2021 | 28.0°C | 23.7°C | 19.4°C | 30.7°C | 14.8°C | 38 mm | 87% | 2.1 m/s | 4.6 |
| 2020 | 27.6°C | 23.7°C | 19.8°C | 29.0°C | 16.4°C | 205 mm | 88% | 2.7 m/s | 3.6 |
| 2019 | 28.5°C | 24.5°C | 20.4°C | 29.5°C | 18.2°C | 83 mm | 88% | 2.5 m/s | 4.1 |
| 2018 | 30.5°C | 25.2°C | 19.9°C | 32.9°C | 17.2°C | 18 mm | 80% | 2.3 m/s | 4.4 |
| 2017 | 28.9°C | 24.2°C | 19.5°C | 30.3°C | 16.8°C | 51 mm | 83% | 2.3 m/s | 4.6 |
| 2016 🔥 | 33.1°C | 26.4°C | 19.6°C | 35.4°C | 15.8°C | 47 mm | 67% | 2.6 m/s | 4.6 |
| 2015 | 27.9°C | 24.1°C | 20.3°C | 29.4°C | 17.3°C | 124 mm | 89% | 2.5 m/s | 3.9 |
| 2014 | 29.5°C | 24.8°C | 20.2°C | 32.5°C | 16.2°C | 40 mm | 81% | 2.7 m/s | 3.8 |
| 2013 | 30.1°C | 24.4°C | 18.7°C | 32.8°C | 15.0°C | 51 mm | 77% | 2.5 m/s | 4.4 |
| 2012 | 31.3°C | 25.8°C | 20.3°C | 33.3°C | 17.1°C | 16 mm | 77% | 3 m/s | 4.5 |
| 2011 | 28.5°C | 23.7°C | 18.9°C | 31.9°C | 15.0°C | 41 mm | 82% | 2.4 m/s | 4.3 |
| 2010 | 27.2°C | 23.4°C | 19.6°C | 29.8°C | 15.2°C | 122 mm | 88% | 2.2 m/s | 3.8 |
| 2009 | 28.7°C | 24.5°C | 20.2°C | 30.4°C | 16.6°C | 85 mm | 85% | 2.5 m/s | 3.8 |
| 2008 | 27.6°C | 23.0°C | 18.5°C | 29.7°C | 13.8°C | 37 mm | 87% | 2.2 m/s | 4.4 |
| 2007 | 28.4°C | 23.8°C | 19.1°C | 30.2°C | 14.0°C | 205 mm | 84% | 2.6 m/s | 4 |
| 2006 | 28.9°C | 23.7°C | 18.5°C | 29.9°C | 15.6°C | 27 mm | 81% | 2.8 m/s | 4.6 |
| 2005 | 27.4°C | 23.5°C | 19.5°C | 29.6°C | 15.4°C | 100 mm | 88% | 2.2 m/s | 4.4 |
| 2004 ❄️ | 28.0°C | 22.9°C | 17.8°C | 29.2°C | 14.9°C | 15 mm | 84% | 2.6 m/s | 4.6 |
| 2003 | 29.8°C | 24.3°C | 18.7°C | 32.1°C | 15.3°C | 5 mm | 79% | 2.5 m/s | 5 |
| 2002 | 30.9°C | 24.9°C | 18.8°C | 32.8°C | 16.0°C | 26 mm | 75% | 2.7 m/s | 4.7 |
| 2001 | 29.4°C | 24.4°C | 19.5°C | 31.4°C | 15.6°C | 35 mm | 78% | 3 m/s | 4.3 |
| 2000 | 28.8°C | 23.4°C | 18.1°C | 30.8°C | 14.6°C | 74 mm | 82% | 2.6 m/s | 4.6 |
| 1999 | 28.5°C | 23.3°C | 18.1°C | 30.0°C | 15.1°C | 46 mm | 82% | 2.6 m/s | 4.5 |
| 1998 | 27.6°C | 23.5°C | 19.3°C | 30.7°C | 14.8°C | 186 mm | 85% | 2.7 m/s | 4 |
| 1997 | 28.6°C | 25.0°C | 21.4°C | 29.8°C | 18.1°C | 106 mm | 89% | 2.1 m/s | 4 |
| 1996 🌧️ | 28.2°C | 23.4°C | 18.7°C | 34.6°C | 14.0°C | 227 mm | 82% | 2.4 m/s | 4.2 |
| 1995 | 30.8°C | 24.4°C | 18.0°C | 32.0°C | 16.3°C | 7 mm | 71% | 2.8 m/s | 4.8 |
| 1994 | 29.7°C | 23.6°C | 17.5°C | 32.0°C | 14.4°C | 30 mm | 76% | 2.8 m/s | 5 |
| 1993 | 27.0°C | 23.1°C | 19.2°C | 28.7°C | 16.2°C | 156 mm | 88% | 2.7 m/s | 3.6 |
| 1992 | 27.9°C | 23.0°C | 18.1°C | 28.9°C | 14.9°C | 38 mm | 83% | 2.8 m/s | 4.4 |
| 1991 | 29.0°C | 23.8°C | 18.6°C | 31.9°C | 15.4°C | 22 mm | 81% | 2.4 m/s | 4.5 |
| 1990 | 31.4°C | 25.9°C | 20.4°C | 33.9°C | 17.0°C | 3 mm | 74% | 3 m/s | 4.3 |
| 1989 | 30.4°C | 24.7°C | 19.0°C | 32.8°C | 16.3°C | 43 mm | 77% | 2.8 m/s | 4.7 |
| 1988 | 31.9°C | 25.7°C | 19.4°C | 34.3°C | 16.1°C | 21 mm | 72% | 2.7 m/s | 4.9 |
| 1987 | 29.0°C | 24.8°C | 20.6°C | 32.8°C | 16.3°C | 174 mm | 83% | 2.5 m/s | 4.2 |
| 1986 | 30.8°C | 25.5°C | 20.3°C | 32.3°C | 16.0°C | 56 mm | 79% | 2.7 m/s | 4.4 |
| 1985 | 30.1°C | 24.7°C | 19.3°C | 31.9°C | 16.7°C | 28 mm | 79% | 2.5 m/s | 4.7 |
| 1984 | 30.7°C | 24.4°C | 18.1°C | 33.8°C | 14.5°C | 46 mm | 75% | 2.3 m/s | 5 |
| 1983 | 28.4°C | 24.6°C | 20.7°C | 30.3°C | 17.6°C | 223 mm | 85% | 2.7 m/s | — |
| 1982 | 30.5°C | 25.0°C | 19.5°C | 31.9°C | 17.0°C | 20 mm | 75% | 2.9 m/s | — |
| 1981 | 27.8°C | 23.3°C | 18.9°C | 29.1°C | 14.6°C | 51 mm | 85% | 2.2 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 29.2°C with lows near 19.4°C (mean 24.3°C), based on 45 years of NASA POWER data.
December averages 74 mm of rainfall in Tiruchirappalli, about average for rainfall. The wettest on record was 227 mm in 1996.
The hottest December reached 35.4°C in 2016. The coldest dipped to 13.8°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.1°C — but days and nights have moved in opposite directions. Overnight lows rose from 19.3°C to 20.2°C while daytime highs eased from 29.5°C to 28.7°C, narrowing the gap between day and night.
December is one of the cooler months of the year in Tiruchirappalli and about average for rainfall, so plan for around 29.2°C daytime highs and 19.4°C at night.
Yes — December is the coldest month of the year in Tiruchirappalli, averaging 24.3°C.
For December in Tiruchirappalli, pack light layers you can adjust through the day, with typical highs of 29.2°C and lows of 19.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 82% — quite humid.
Average wind speed in December is 2.5 m/s. The windiest December on record averaged 3 m/s (1990).
The wettest December on record was 1996 with 227 mm. On average, December sees 74 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 Tiruchirappalli 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.
