December is one of the cooler months of the year in Ernakulam, with average highs near 31.8°C and lows around 21.4°C (mean 26.6°C). It is one of the drier months, averaging 51 mm of rainfall and 72% relative humidity across the period.
December is one of the cooler months of the year in Ernakulam. Across 45 years of records, the warmest December in Ernakulam was 2016 — when the month averaged 28.5°C — while the coldest was 1992 at 25°C. Typical December days reach 31.8°C with nights near 21.4°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 | 27.1°C | 26.1°C | 26.1°C | 26.9°C | 26.8°C | -0.3°C |
| Avg High | 32.4°C | 31.4°C | 31.7°C | 31.8°C | 31.5°C | -0.9°C |
| Avg Low | 21.7°C | 20.9°C | 20.6°C | 22.0°C | 22.1°C | +0.4°C |
| Avg Rain | 49 mm | 61 mm | 24 mm | 45 mm | 94 mm | +45 mm |
December temperatures in Ernakulam have fallen by about 0.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 19.3°C (1992) to a record high of 34.1°C (2016).
Rainfall in December is one of the drier months, averaging 51 mm, with a wettest year of 198 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°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 Ernakulam
December is one of the best times to visit Ernakulam. Expect days averaging 31.8°C and nights around 21.4°C (mean 26.6°C) — cooler than Ernakulam's yearly average — with moderate rainfall (51 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 31.5°C | 20.5°C | 26.0°C | 20 mm | 72% | 1.6 m/s | — |
| 2024 | 31.5°C | 23.1°C | 27.3°C | 145 mm | 80% | 1.9 m/s | 4.8 |
| 2023 | 31.6°C | 22.5°C | 27.1°C | 123 mm | 80% | 1.7 m/s | 4.9 |
| 2022 | 31.1°C | 22.6°C | 26.9°C | 138 mm | 76% | 1.5 m/s | 4.8 |
| 2021 | 31.1°C | 21.4°C | 26.3°C | 45 mm | 77% | 1.4 m/s | 5.5 |
| 2020 | 32.4°C | 22.3°C | 27.4°C | 93 mm | 75% | 1.5 m/s | 4.6 |
| 2019 | 31.7°C | 23.3°C | 27.5°C | 60 mm | 76% | 1.4 m/s | 4.9 |
| 2018 | 31.8°C | 22.9°C | 27.3°C | 27 mm | 74% | 1.5 m/s | 4.9 |
| 2017 | 31.5°C | 20.9°C | 26.2°C | 39 mm | 74% | 1.9 m/s | 5.2 |
| 2016 🔥 | 34.1°C | 23.0°C | 28.5°C | 28 mm | 72% | 1.9 m/s | 4.9 |
| 2015 | 31.3°C | 21.5°C | 26.4°C | 70 mm | 77% | 1.5 m/s | 4.9 |
| 2014 | 31.6°C | 22.4°C | 27.0°C | 22 mm | 74% | 1.6 m/s | 4.6 |
| 2013 | 30.9°C | 20.9°C | 25.9°C | 48 mm | 72% | 1.7 m/s | 5 |
| 2012 | 33.4°C | 22.3°C | 27.9°C | 12 mm | 69% | 1.6 m/s | 5 |
| 2011 | 31.9°C | 20.8°C | 26.3°C | 83 mm | 71% | 1.7 m/s | 4.8 |
| 2010 | 30.2°C | 21.7°C | 26.0°C | 63 mm | 79% | 1.5 m/s | 4.6 |
| 2009 | 32.2°C | 21.4°C | 26.8°C | 16 mm | 75% | 1.6 m/s | 5 |
| 2008 | 32.1°C | 20.0°C | 26.0°C | 22 mm | 68% | 1.3 m/s | 5.1 |
| 2007 | 31.3°C | 20.9°C | 26.1°C | 31 mm | 71% | 1.8 m/s | 4.9 |
| 2006 | 31.2°C | 20.5°C | 25.9°C | 0 mm | 70% | 1.9 m/s | 5.3 |
| 2005 | 30.2°C | 21.1°C | 25.7°C | 45 mm | 78% | 1.8 m/s | 5 |
| 2004 | 31.5°C | 20.5°C | 26.0°C | 1 mm | 70% | 1.8 m/s | 5.4 |
| 2003 | 32.1°C | 20.7°C | 26.4°C | 89 mm | 68% | 1.6 m/s | 5.5 |
| 2002 | 31.6°C | 20.6°C | 26.1°C | 1 mm | 70% | 1.6 m/s | 5 |
| 2001 | 32.2°C | 20.2°C | 26.2°C | 9 mm | 71% | 1.5 m/s | 5.4 |
| 2000 | 32.3°C | 19.6°C | 25.9°C | 28 mm | 67% | 1.9 m/s | 5.1 |
| 1999 | 31.3°C | 20.8°C | 26.1°C | 34 mm | 71% | 1.6 m/s | 5.5 |
| 1998 | 31.0°C | 20.9°C | 25.9°C | 87 mm | 76% | 1.8 m/s | 4.6 |
| 1997 | 31.0°C | 23.5°C | 27.3°C | 143 mm | 81% | 1.5 m/s | 4.6 |
| 1996 🌧️ | 29.9°C | 20.7°C | 25.3°C | 198 mm | 76% | 1.7 m/s | 4.6 |
| 1995 | 31.6°C | 20.5°C | 26.1°C | 0 mm | 65% | 1.7 m/s | 5.5 |
| 1994 | 32.7°C | 19.7°C | 26.2°C | 4 mm | 66% | 1.6 m/s | 5.4 |
| 1993 | 30.3°C | 21.6°C | 25.9°C | 110 mm | 76% | 1.5 m/s | 4.7 |
| 1992 ❄️ | 30.8°C | 19.3°C | 25.0°C | 13 mm | 71% | 1.7 m/s | 5.3 |
| 1991 | 31.5°C | 20.4°C | 25.9°C | 20 mm | 71% | 1.7 m/s | 5 |
| 1990 | 33.5°C | 21.7°C | 27.6°C | 4 mm | 68% | 1.8 m/s | 5 |
| 1989 | 32.1°C | 21.4°C | 26.8°C | 25 mm | 70% | 1.7 m/s | 5.4 |
| 1988 | 32.9°C | 21.5°C | 27.2°C | 65 mm | 66% | 1.7 m/s | 5.4 |
| 1987 | 30.8°C | 21.3°C | 26.0°C | 100 mm | 78% | 1.8 m/s | 4.8 |
| 1986 | 33.3°C | 22.2°C | 27.7°C | 12 mm | 70% | 1.6 m/s | 5.2 |
| 1985 | 32.6°C | 21.2°C | 26.9°C | 84 mm | 71% | 1.6 m/s | 5.3 |
| 1984 | 33.0°C | 21.2°C | 27.1°C | 34 mm | 67% | 1.4 m/s | 5.2 |
| 1983 | 32.3°C | 23.0°C | 27.6°C | 93 mm | 74% | 1.8 m/s | — |
| 1982 | 33.5°C | 22.0°C | 27.7°C | 7 mm | 64% | 1.8 m/s | — |
| 1981 | 31.0°C | 21.9°C | 26.5°C | 19 mm | 73% | 1.4 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 31.8°C with lows near 21.4°C (mean 26.6°C), based on 45 years of NASA POWER data.
December averages 51 mm of rainfall in Ernakulam, one of the drier months. The wettest on record was 198 mm in 1996.
The hottest December reached 34.1°C in 2016. The coldest dipped to 19.3°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have fallen by about 0.5°C. Daytime highs moved from 32.5°C to 31.4°C and overnight lows from 21.9°C to 22°C over the same span.
December is one of the cooler months of the year in Ernakulam and one of the drier months, so plan for around 31.8°C daytime highs and 21.4°C at night.
Not quite — December is the 4th coolest month in Ernakulam, averaging 26.6°C.
For December in Ernakulam, pack light, breathable clothing and sun protection, with typical highs of 31.8°C and lows of 21.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 72% — moderately humid.
Average wind speed in December is 1.6 m/s. The windiest December on record averaged 1.9 m/s (2000).
The wettest December on record was 1996 with 198 mm. On average, December sees 51 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 Ernakulam 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.
