December is one of the cooler months of the year in Karur, with average highs near 29.7°C and lows around 18.7°C (mean 24.2°C). It is about average for rainfall, averaging 60 mm of rainfall and 79% relative humidity across the period.
December is one of the cooler months of the year in Karur. Across 45 years of records, the warmest December in Karur was 2016 — when the month averaged 26.5°C — while the coldest were 1992 and 2004 at 22.4°C. Typical December days reach 29.7°C with nights near 18.7°C. The long-term December temperature trend is broadly flat.
December is about average for rainfall in Karur, averaging 60 mm of rainfall. The wettest December on record was 1983 with 207 mm, while the driest was 1990 at 2 mm.
Relative humidity in Karur during December averages 79%. The most humid December was 1997 at 88%, and the least humid was 2016 at 63%.
December receives about 4.3 kWh/m²/day of solar energy in Karur. 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 Karur during December is 2.1 m/s. The windiest Decembers were 1990 and 2012 at 2.5 m/s, while the calmest was 2024 at 1.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.6°C | 23.6°C | 23.6°C | 24.8°C | 24.6°C | 0°C |
| Avg High | 30.4°C | 29.1°C | 29.1°C | 30.4°C | 29.4°C | -1°C |
| Avg Low | 18.8°C | 18.1°C | 18.0°C | 19.3°C | 19.7°C | +0.9°C |
| Avg Rain | 67 mm | 74 mm | 53 mm | 42 mm | 71 mm | +4 mm |
December temperatures in Karur have risen by about 0.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 12.6°C (2008) to a record high of 36°C (2016).
Rainfall in December is about average for rainfall, averaging 60 mm, with a wettest year of 207 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.3°C per decade, narrowing the gap between day and night.
One of the best times to visit Karur
December is one of the best times to visit Karur. Expect days averaging 29.7°C and nights around 18.7°C (mean 24.2°C) — cooler than Karur's yearly average — with moderate rainfall (60 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 | 30.4°C | 24.3°C | 18.2°C | 32.8°C | 14.4°C | 24 mm | 76% | 2 m/s | — |
| 2024 | 29.0°C | 25.1°C | 21.2°C | 30.7°C | 17.6°C | 143 mm | 86% | 1.6 m/s | 4.1 |
| 2023 | 30.5°C | 25.6°C | 20.8°C | 32.6°C | 17.4°C | 53 mm | 81% | 2.1 m/s | 3.8 |
| 2022 | 29.7°C | 24.9°C | 20.0°C | 31.6°C | 16.6°C | 79 mm | 81% | 2 m/s | 4.1 |
| 2021 | 28.2°C | 23.6°C | 18.9°C | 30.3°C | 14.0°C | 32 mm | 85% | 1.7 m/s | 4.6 |
| 2020 | 28.5°C | 23.8°C | 19.1°C | 30.4°C | 15.9°C | 96 mm | 84% | 2.2 m/s | 3.6 |
| 2019 | 29.6°C | 24.7°C | 19.8°C | 31.4°C | 18.0°C | 55 mm | 84% | 2.2 m/s | 4.1 |
| 2018 | 32.3°C | 26.2°C | 20.1°C | 34.3°C | 17.9°C | 9 mm | 72% | 2 m/s | 4.4 |
| 2017 | 29.9°C | 24.5°C | 19.0°C | 31.9°C | 16.3°C | 37 mm | 78% | 2 m/s | 4.6 |
| 2016 🔥 | 33.6°C | 26.5°C | 19.5°C | 36.0°C | 15.7°C | 45 mm | 63% | 2.1 m/s | 4.6 |
| 2015 | 29.2°C | 24.5°C | 19.8°C | 30.7°C | 16.5°C | 58 mm | 84% | 2.1 m/s | 3.9 |
| 2014 | 30.4°C | 25.0°C | 19.7°C | 33.6°C | 16.3°C | 32 mm | 77% | 2.1 m/s | 3.8 |
| 2013 | 30.7°C | 24.4°C | 18.2°C | 33.2°C | 15.0°C | 39 mm | 74% | 2.1 m/s | 4.4 |
| 2012 | 32.1°C | 25.9°C | 19.8°C | 33.9°C | 16.9°C | 11 mm | 74% | 2.5 m/s | 4.5 |
| 2011 | 28.8°C | 23.4°C | 17.9°C | 32.5°C | 14.3°C | 33 mm | 80% | 1.9 m/s | 4.3 |
| 2010 | 27.3°C | 23.1°C | 19.0°C | 29.4°C | 14.2°C | 104 mm | 87% | 1.7 m/s | 3.8 |
| 2009 | 29.2°C | 24.4°C | 19.5°C | 31.3°C | 16.0°C | 59 mm | 82% | 2 m/s | 3.8 |
| 2008 | 27.4°C | 22.5°C | 17.6°C | 28.8°C | 12.6°C | 30 mm | 85% | 1.8 m/s | 4.4 |
| 2007 | 28.7°C | 23.6°C | 18.4°C | 31.2°C | 13.2°C | 187 mm | 81% | 2.2 m/s | 4 |
| 2006 | 29.4°C | 23.4°C | 17.4°C | 30.5°C | 15.2°C | 22 mm | 79% | 2.3 m/s | 4.6 |
| 2005 | 27.5°C | 23.3°C | 19.0°C | 29.5°C | 15.0°C | 95 mm | 87% | 1.7 m/s | 4.4 |
| 2004 | 28.1°C | 22.4°C | 16.7°C | 29.2°C | 14.6°C | 12 mm | 83% | 2 m/s | 4.6 |
| 2003 | 30.3°C | 24.1°C | 17.9°C | 32.9°C | 14.4°C | 5 mm | 76% | 2 m/s | 5 |
| 2002 | 31.8°C | 24.9°C | 18.0°C | 33.6°C | 15.3°C | 21 mm | 70% | 2.1 m/s | 4.7 |
| 2001 | 29.8°C | 24.1°C | 18.5°C | 31.5°C | 14.3°C | 31 mm | 76% | 2.4 m/s | 4.3 |
| 2000 | 29.0°C | 23.0°C | 16.9°C | 31.8°C | 13.4°C | 67 mm | 79% | 2.1 m/s | 4.6 |
| 1999 | 28.8°C | 23.0°C | 17.3°C | 30.2°C | 14.3°C | 42 mm | 80% | 2 m/s | 4.5 |
| 1998 | 27.6°C | 23.1°C | 18.6°C | 31.1°C | 13.7°C | 169 mm | 84% | 2.1 m/s | 4 |
| 1997 | 28.7°C | 24.7°C | 20.7°C | 29.9°C | 16.6°C | 97 mm | 88% | 1.8 m/s | 4 |
| 1996 | 28.1°C | 23.0°C | 17.9°C | 34.7°C | 12.9°C | 204 mm | 80% | 2 m/s | 4.2 |
| 1995 | 31.2°C | 23.9°C | 16.7°C | 32.1°C | 15.2°C | 6 mm | 69% | 2.3 m/s | 4.8 |
| 1994 | 30.2°C | 23.5°C | 16.7°C | 32.6°C | 12.9°C | 25 mm | 73% | 2.2 m/s | 5 |
| 1993 | 27.0°C | 22.7°C | 18.3°C | 28.9°C | 14.7°C | 139 mm | 87% | 2.1 m/s | 3.6 |
| 1992 ❄️ | 28.0°C | 22.4°C | 16.8°C | 29.0°C | 13.3°C | 33 mm | 82% | 2.3 m/s | 4.4 |
| 1991 | 29.1°C | 23.5°C | 17.9°C | 32.1°C | 14.6°C | 19 mm | 79% | 2 m/s | 4.5 |
| 1990 | 32.0°C | 25.8°C | 19.6°C | 34.0°C | 15.9°C | 2 mm | 70% | 2.5 m/s | 4.3 |
| 1989 | 31.0°C | 24.7°C | 18.3°C | 33.4°C | 16.0°C | 38 mm | 73% | 2.4 m/s | 4.7 |
| 1988 | 32.3°C | 25.4°C | 18.6°C | 34.5°C | 15.4°C | 20 mm | 69% | 2.2 m/s | 4.9 |
| 1987 | 29.2°C | 24.7°C | 20.1°C | 33.7°C | 15.0°C | 161 mm | 82% | 2 m/s | 4.2 |
| 1986 | 31.4°C | 25.5°C | 19.5°C | 32.9°C | 14.8°C | 47 mm | 76% | 2.3 m/s | 4.4 |
| 1985 | 30.8°C | 24.8°C | 18.8°C | 33.0°C | 15.3°C | 24 mm | 76% | 2 m/s | 4.7 |
| 1984 | 31.3°C | 24.4°C | 17.5°C | 34.6°C | 14.2°C | 43 mm | 72% | 1.9 m/s | 5 |
| 1983 🌧️ | 28.8°C | 24.4°C | 20.1°C | 31.1°C | 16.9°C | 207 mm | 83% | 2.3 m/s | — |
| 1982 | 31.0°C | 24.7°C | 18.4°C | 32.6°C | 15.9°C | 16 mm | 72% | 2.4 m/s | — |
| 1981 | 27.5°C | 22.8°C | 18.1°C | 29.0°C | 14.5°C | 46 mm | 84% | 1.8 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 29.7°C with lows near 18.7°C (mean 24.2°C), based on 45 years of NASA POWER data.
December averages 60 mm of rainfall in Karur, about average for rainfall. The wettest on record was 207 mm in 1983.
The hottest December reached 36°C in 2016. The coldest dipped to 12.6°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.5°C — but days and nights have moved in opposite directions. Overnight lows rose from 18.6°C to 19.8°C while daytime highs eased from 29.9°C to 29.6°C, narrowing the gap between day and night.
December is one of the cooler months of the year in Karur and about average for rainfall, so plan for around 29.7°C daytime highs and 18.7°C at night.
Yes — December is the coldest month of the year in Karur, averaging 24.2°C.
For December in Karur, pack light layers you can adjust through the day, with typical highs of 29.7°C and lows of 18.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 79% — quite humid.
Average wind speed in December is 2.1 m/s. The windiest December on record averaged 2.5 m/s (1990).
The wettest December on record was 1983 with 207 mm. On average, December sees 60 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 Karur 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.
