December is one of the cooler months of the year in Thrissur, with average highs near 30.4°C and lows around 21.7°C (mean 26.1°C). It is one of the drier months, averaging 41 mm of rainfall and 74% relative humidity across the period.
December is one of the cooler months of the year in Thrissur. Across 45 years of records, the warmest December in Thrissur was 1986 — when the month averaged 27.9°C — while the coldest was 1992 at 24.5°C. Typical December days reach 30.4°C with nights near 21.7°C. The long-term December temperature trend is broadly flat.
December is one of the drier months in Thrissur, averaging 41 mm of rainfall. The wettest December on record was 1996 with 150 mm, while the driest was 2006 at 0 mm.
Relative humidity in Thrissur during December averages 74%. The most humid December was 1997 at 83%, and the least humid was 1982 at 64%.
December receives about 4.9 kWh/m²/day of solar energy in Thrissur. The sunniest Decembers were 1995 and 2003 at 5.4 kWh/m²/day, and the cloudiest were 2020 and 2022 at 4.4.
Average wind speed in Thrissur during December is 1.9 m/s. The windiest Decembers were 1992 and 2006 at 2.3 m/s, while the calmest were 1984, 2010 and 2018 at 1.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.6°C | 25.6°C | 25.7°C | 26.4°C | 26.1°C | -0.5°C |
| Avg High | 31.2°C | 29.9°C | 30.4°C | 30.5°C | 29.7°C | -1.5°C |
| Avg Low | 21.9°C | 21.2°C | 21.1°C | 22.3°C | 22.4°C | +0.5°C |
| Avg Rain | 39 mm | 46 mm | 19 mm | 36 mm | 79 mm | +40 mm |
December temperatures in Thrissur have fallen by about 0.4°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 17.1°C (1992) to a record high of 35.3°C (2016).
Rainfall in December is one of the drier months, averaging 41 mm, with a wettest year of 150 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 Thrissur
December is one of the best times to visit Thrissur. Expect days averaging 30.4°C and nights around 21.7°C (mean 26.1°C) — cooler than Thrissur's yearly average — with moderate rainfall (41 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 | 29.9°C | 25.5°C | 21.2°C | 31.6°C | 18.9°C | 22 mm | 75% | 1.8 m/s | — |
| 2024 | 29.9°C | 26.6°C | 23.4°C | 31.5°C | 20.8°C | 123 mm | 82% | 1.8 m/s | 4.5 |
| 2023 | 29.6°C | 26.5°C | 23.4°C | 31.3°C | 20.5°C | 97 mm | 83% | 2 m/s | 4.5 |
| 2022 | 29.7°C | 26.1°C | 22.4°C | 31.0°C | 19.9°C | 125 mm | 78% | 1.6 m/s | 4.4 |
| 2021 | 29.1°C | 25.5°C | 21.9°C | 30.2°C | 18.6°C | 34 mm | 81% | 1.8 m/s | 5 |
| 2020 | 30.0°C | 26.1°C | 22.2°C | 32.3°C | 19.7°C | 75 mm | 78% | 1.9 m/s | 4.4 |
| 2019 | 30.0°C | 26.5°C | 22.9°C | 31.6°C | 21.5°C | 60 mm | 80% | 2 m/s | 4.7 |
| 2018 | 31.2°C | 27.2°C | 23.1°C | 33.0°C | 21.5°C | 19 mm | 74% | 1.5 m/s | 4.6 |
| 2017 | 30.1°C | 26.0°C | 21.9°C | 32.2°C | 18.8°C | 39 mm | 76% | 1.9 m/s | 5 |
| 2016 | 32.7°C | 27.7°C | 22.7°C | 35.3°C | 21.0°C | 40 mm | 70% | 1.7 m/s | 4.8 |
| 2015 | 30.0°C | 26.3°C | 22.6°C | 32.3°C | 19.6°C | 50 mm | 79% | 1.8 m/s | 4.7 |
| 2014 | 30.2°C | 26.3°C | 22.4°C | 31.6°C | 19.4°C | 21 mm | 76% | 1.8 m/s | 4.5 |
| 2013 | 30.3°C | 25.9°C | 21.4°C | 31.8°C | 18.8°C | 41 mm | 73% | 1.8 m/s | 5 |
| 2012 | 32.5°C | 27.6°C | 22.6°C | 34.2°C | 20.1°C | 10 mm | 69% | 1.8 m/s | 4.9 |
| 2011 | 30.6°C | 25.9°C | 21.2°C | 32.8°C | 17.9°C | 38 mm | 73% | 1.9 m/s | 4.8 |
| 2010 | 27.8°C | 24.9°C | 21.9°C | 29.4°C | 18.4°C | 42 mm | 81% | 1.5 m/s | 4.6 |
| 2009 | 30.3°C | 26.4°C | 22.5°C | 32.2°C | 18.9°C | 20 mm | 77% | 1.7 m/s | 4.7 |
| 2008 | 31.2°C | 26.2°C | 21.1°C | 32.6°C | 17.5°C | 16 mm | 71% | 1.8 m/s | 4.9 |
| 2007 | 30.0°C | 25.5°C | 21.1°C | 31.8°C | 18.1°C | 42 mm | 75% | 2.1 m/s | 4.8 |
| 2006 | 29.5°C | 24.9°C | 20.4°C | 31.1°C | 18.4°C | 0 mm | 76% | 2.3 m/s | 5.1 |
| 2005 | 28.9°C | 25.4°C | 21.9°C | 29.8°C | 18.4°C | 32 mm | 80% | 1.7 m/s | 4.9 |
| 2004 | 30.1°C | 25.1°C | 20.2°C | 32.2°C | 17.9°C | 1 mm | 73% | 2.2 m/s | 5.3 |
| 2003 | 31.9°C | 26.5°C | 21.1°C | 33.4°C | 18.2°C | 47 mm | 68% | 1.8 m/s | 5.4 |
| 2002 | 30.5°C | 25.6°C | 20.8°C | 31.8°C | 17.7°C | 1 mm | 71% | 1.9 m/s | 5.1 |
| 2001 | 30.2°C | 25.7°C | 21.1°C | 32.5°C | 17.7°C | 10 mm | 73% | 1.9 m/s | 5 |
| 2000 | 31.1°C | 25.7°C | 20.3°C | 33.6°C | 17.1°C | 21 mm | 68% | 2 m/s | 5.2 |
| 1999 | 30.0°C | 25.5°C | 21.0°C | 31.6°C | 18.3°C | 24 mm | 73% | 1.9 m/s | 5.1 |
| 1998 | 29.0°C | 25.4°C | 21.8°C | 30.9°C | 18.0°C | 87 mm | 79% | 1.9 m/s | 4.5 |
| 1997 | 29.3°C | 26.4°C | 23.4°C | 30.7°C | 21.1°C | 96 mm | 83% | 1.6 m/s | 4.7 |
| 1996 🌧️ | 28.4°C | 24.6°C | 20.9°C | 30.9°C | 17.2°C | 150 mm | 78% | 1.8 m/s | 4.6 |
| 1995 | 30.8°C | 25.3°C | 19.7°C | 32.3°C | 18.4°C | 1 mm | 66% | 2.1 m/s | 5.4 |
| 1994 | 30.6°C | 25.5°C | 20.4°C | 32.8°C | 17.2°C | 5 mm | 69% | 2.1 m/s | 5.2 |
| 1993 | 29.0°C | 25.2°C | 21.4°C | 30.8°C | 18.5°C | 73 mm | 79% | 2 m/s | 4.8 |
| 1992 ❄️ | 29.0°C | 24.5°C | 19.9°C | 30.6°C | 17.1°C | 8 mm | 76% | 2.3 m/s | 5.1 |
| 1991 | 30.8°C | 25.8°C | 20.9°C | 32.6°C | 18.1°C | 11 mm | 70% | 2 m/s | 5.1 |
| 1990 | 32.4°C | 27.3°C | 22.3°C | 34.2°C | 19.9°C | 2 mm | 68% | 2.1 m/s | 5 |
| 1989 | 31.4°C | 26.5°C | 21.6°C | 33.2°C | 19.2°C | 22 mm | 71% | 2 m/s | 5.2 |
| 1988 | 32.4°C | 27.0°C | 21.6°C | 33.7°C | 19.3°C | 39 mm | 66% | 1.9 m/s | 5.3 |
| 1987 | 29.1°C | 25.9°C | 22.8°C | 30.0°C | 18.9°C | 87 mm | 80% | 1.7 m/s | 4.7 |
| 1986 🔥 | 32.9°C | 27.9°C | 22.8°C | 34.0°C | 20.2°C | 9 mm | 68% | 1.8 m/s | 5.1 |
| 1985 | 31.5°C | 26.7°C | 22.0°C | 33.7°C | 19.0°C | 49 mm | 71% | 1.7 m/s | 5 |
| 1984 | 31.1°C | 25.9°C | 20.8°C | 34.2°C | 18.3°C | 49 mm | 68% | 1.5 m/s | 5.2 |
| 1983 | 30.6°C | 26.7°C | 22.7°C | 32.7°C | 20.6°C | 69 mm | 76% | 2 m/s | — |
| 1982 | 32.8°C | 27.3°C | 21.8°C | 34.5°C | 20.1°C | 5 mm | 64% | 2.2 m/s | — |
| 1981 | 29.4°C | 25.4°C | 21.4°C | 30.8°C | 19.1°C | 26 mm | 76% | 1.8 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 30.4°C with lows near 21.7°C (mean 26.1°C), based on 45 years of NASA POWER data.
December averages 41 mm of rainfall in Thrissur, one of the drier months. The wettest on record was 150 mm in 1996.
The hottest December reached 35.3°C in 2016. The coldest dipped to 17.1°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have fallen by about 0.4°C — but days and nights have moved in opposite directions. Overnight lows rose from 21.7°C to 22.5°C while daytime highs eased from 31.1°C to 29.6°C, narrowing the gap between day and night.
December is one of the cooler months of the year in Thrissur and one of the drier months, so plan for around 30.4°C daytime highs and 21.7°C at night.
Not quite — December is the 4th coolest month in Thrissur, averaging 26.1°C.
For December in Thrissur, pack light, breathable clothing and sun protection, with typical highs of 30.4°C and lows of 21.7°C.
Relative humidity in December averages 74% — moderately humid.
Average wind speed in December is 1.9 m/s. The windiest December on record averaged 2.3 m/s (1992).
The wettest December on record was 1996 with 150 mm. On average, December sees 41 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 Thrissur 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.
