December is one of the cooler months of the year in Kollam, with average highs near 29.9°C and lows around 17.9°C (mean 23.9°C). It is one of the drier months, averaging 66 mm of rainfall and 81% relative humidity across the period.
December is one of the cooler months of the year in Kollam. Across 45 years of records, the warmest December in Kollam was 1986 — when the month averaged 26.2°C — while the coldest were 1992 and 2008 at 22.3°C. Typical December days reach 29.9°C with nights near 17.9°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 | 24.6°C | 23.6°C | 23.1°C | 24.2°C | 24.2°C | -0.4°C |
| Avg High | 31.1°C | 29.7°C | 29.4°C | 29.8°C | 29.5°C | -1.6°C |
| Avg Low | 18.2°C | 17.4°C | 16.8°C | 18.5°C | 19.0°C | +0.8°C |
| Avg Rain | 70 mm | 64 mm | 30 mm | 79 mm | 98 mm | +28 mm |
December temperatures in Kollam have fallen by about 0.3°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 15.5°C (2008) to a record high of 33.6°C (2016).
Rainfall in December is one of the drier months, averaging 66 mm, with a wettest year of 265 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.3°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 Kollam
December is one of the best times to visit Kollam. Expect days averaging 29.9°C and nights around 17.9°C (mean 23.9°C) — cooler than Kollam's yearly average — with moderate rainfall (66 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 28.9°C | 17.1°C | 23.0°C | 9 mm | 82% | 1.1 m/s | — |
| 2024 | 30.2°C | 20.7°C | 25.4°C | 118 mm | 85% | 1.1 m/s | 4.9 |
| 2023 | 29.8°C | 19.9°C | 24.8°C | 187 mm | 87% | 1.4 m/s | 4.9 |
| 2022 | 29.6°C | 19.5°C | 24.5°C | 95 mm | 84% | 1.1 m/s | 4.5 |
| 2021 | 29.3°C | 18.0°C | 23.6°C | 110 mm | 85% | 1.2 m/s | 5.4 |
| 2020 | 29.1°C | 18.8°C | 23.9°C | 69 mm | 85% | 1.3 m/s | 4.5 |
| 2019 | 29.6°C | 20.6°C | 25.1°C | 42 mm | 86% | 1.4 m/s | 4.8 |
| 2018 | 29.7°C | 19.8°C | 24.7°C | 20 mm | 82% | 1.1 m/s | 4.8 |
| 2017 | 28.9°C | 16.9°C | 22.9°C | 82 mm | 84% | 1.3 m/s | 5.1 |
| 2016 | 33.6°C | 18.3°C | 26.0°C | 25 mm | 73% | 1.2 m/s | 5 |
| 2015 | 29.1°C | 18.3°C | 23.7°C | 123 mm | 87% | 1.2 m/s | 4.7 |
| 2014 | 28.9°C | 18.5°C | 23.7°C | 70 mm | 85% | 1.3 m/s | 4.4 |
| 2013 | 29.0°C | 17.9°C | 23.4°C | 41 mm | 81% | 1.2 m/s | 5 |
| 2012 | 31.4°C | 19.1°C | 25.2°C | 39 mm | 77% | 1.3 m/s | 4.9 |
| 2011 | 29.4°C | 17.8°C | 23.6°C | 201 mm | 82% | 1.3 m/s | 4.8 |
| 2010 | 28.7°C | 18.2°C | 23.4°C | 147 mm | 86% | 1 m/s | 4.5 |
| 2009 | 29.8°C | 18.0°C | 23.9°C | 31 mm | 84% | 1.2 m/s | 4.9 |
| 2008 | 29.1°C | 15.5°C | 22.3°C | 20 mm | 83% | 1.2 m/s | 5.1 |
| 2007 | 28.9°C | 16.3°C | 22.6°C | 13 mm | 83% | 1.4 m/s | 4.9 |
| 2006 | 29.0°C | 16.8°C | 22.9°C | 2 mm | 83% | 1.6 m/s | 5.1 |
| 2005 | 29.0°C | 17.4°C | 23.2°C | 91 mm | 86% | 1.2 m/s | 4.9 |
| 2004 | 29.2°C | 17.2°C | 23.2°C | 13 mm | 82% | 1.4 m/s | 5.4 |
| 2003 | 29.3°C | 16.9°C | 23.1°C | 46 mm | 81% | 1.3 m/s | 5.6 |
| 2002 | 29.1°C | 17.2°C | 23.1°C | 3 mm | 81% | 1.2 m/s | 4.8 |
| 2001 | 28.9°C | 16.8°C | 22.8°C | 27 mm | 83% | 1.3 m/s | 5.4 |
| 2000 | 32.0°C | 16.3°C | 24.2°C | 55 mm | 74% | 1.1 m/s | 5.2 |
| 1999 | 29.1°C | 17.2°C | 23.1°C | 24 mm | 81% | 1.3 m/s | 5.4 |
| 1998 | 29.4°C | 17.1°C | 23.3°C | 154 mm | 86% | 1.1 m/s | 4.5 |
| 1997 | 29.7°C | 19.5°C | 24.6°C | 121 mm | 87% | 1.1 m/s | 4.4 |
| 1996 | 28.5°C | 17.4°C | 22.9°C | 124 mm | 84% | 1.1 m/s | 4.2 |
| 1995 | 30.6°C | 17.4°C | 24.0°C | 0 mm | 75% | 1.4 m/s | 5.4 |
| 1994 | 30.4°C | 16.1°C | 23.3°C | 18 mm | 78% | 1.4 m/s | 5.3 |
| 1993 | 28.9°C | 18.2°C | 23.5°C | 148 mm | 86% | 1.2 m/s | 4.2 |
| 1992 ❄️ | 28.6°C | 15.9°C | 22.3°C | 22 mm | 83% | 1.6 m/s | 5 |
| 1991 | 30.5°C | 16.9°C | 23.7°C | 15 mm | 80% | 1.3 m/s | 4.7 |
| 1990 | 31.7°C | 18.5°C | 25.1°C | 14 mm | 78% | 1.4 m/s | 4.8 |
| 1989 | 30.8°C | 18.0°C | 24.4°C | 19 mm | 79% | 1.5 m/s | 5.2 |
| 1988 | 31.2°C | 17.6°C | 24.4°C | 50 mm | 75% | 1.3 m/s | 5.1 |
| 1987 🌧️ | 29.2°C | 17.9°C | 23.6°C | 265 mm | 87% | 1.1 m/s | 4.7 |
| 1986 🔥 | 33.4°C | 19.1°C | 26.2°C | 16 mm | 71% | 1.1 m/s | 5 |
| 1985 | 31.1°C | 17.7°C | 24.4°C | 65 mm | 76% | 1.1 m/s | 4.8 |
| 1984 | 32.7°C | 17.2°C | 24.9°C | 11 mm | 69% | 1 m/s | 5.1 |
| 1983 | 31.0°C | 19.7°C | 25.3°C | 169 mm | 79% | 1.3 m/s | — |
| 1982 | 31.9°C | 18.5°C | 25.2°C | 20 mm | 74% | 1.5 m/s | — |
| 1981 | 28.8°C | 17.9°C | 23.3°C | 16 mm | 84% | 1.2 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 29.9°C with lows near 17.9°C (mean 23.9°C), based on 45 years of NASA POWER data.
December averages 66 mm of rainfall in Kollam, one of the drier months. The wettest on record was 265 mm in 1987.
The hottest December reached 33.6°C in 2016. The coldest dipped to 15.5°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have fallen by about 0.3°C. Daytime highs moved from 31.1°C to 29.6°C and overnight lows from 18.2°C to 19°C over the same span.
December is one of the cooler months of the year in Kollam and one of the drier months, so plan for around 29.9°C daytime highs and 17.9°C at night.
Yes — December is the coldest month of the year in Kollam, averaging 23.9°C.
For December in Kollam, pack light layers you can adjust through the day, with typical highs of 29.9°C and lows of 17.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 81% — quite humid.
Average wind speed in December is 1.3 m/s. The windiest December on record averaged 1.6 m/s (1992).
The wettest December on record was 1987 with 265 mm. On average, December sees 66 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 Kollam 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.
