December is one of the cooler months of the year in Ramanathapuram, with average highs near 28.6°C and lows around 22.7°C (mean 25.7°C). It is a relatively wet time of year, averaging 106 mm of rainfall and 82% relative humidity across the period.
December is one of the cooler months of the year in Ramanathapuram. Across 45 years of records, the warmest December in Ramanathapuram was 2016 — when the month averaged 27.1°C — while the coldest was 1993 at 24.6°C. Typical December days reach 28.6°C with nights near 22.7°C. The long-term December temperature trend is broadly flat.
December is a relatively wet time of year in Ramanathapuram, averaging 106 mm of rainfall. The wettest December on record was 1983 with 329 mm, while the driest was 1995 at 7 mm.
Relative humidity in Ramanathapuram during December averages 82%. The most humid December was 1993 at 89%, and the least humid was 1995 at 70%.
December receives about 4.5 kWh/m²/day of solar energy in Ramanathapuram. The sunniest Decembers were 1994 and 2021 at 5.1 kWh/m²/day, and the cloudiest was 1993 at 3.6.
Average wind speed in Ramanathapuram during December is 3.9 m/s. The windiest December was 1995 at 4.6 m/s, while the calmest was 1987 at 3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 25.9°C | 25.5°C | 25.2°C | 26.0°C | 25.9°C | 0°C |
| Avg High | 29.1°C | 28.5°C | 28.2°C | 28.9°C | 28.4°C | -0.7°C |
| Avg Low | 22.8°C | 22.4°C | 22.3°C | 23.1°C | 23.3°C | +0.5°C |
| Avg Rain | 105 mm | 101 mm | 78 mm | 96 mm | 179 mm | +75 mm |
December temperatures in Ramanathapuram have risen by about 0.4°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 18.6°C (1996) to a record high of 34.2°C (1996).
Rainfall in December is a relatively wet time of year, averaging 106 mm, with a wettest year of 329 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 Ramanathapuram
December is one of the best times to visit Ramanathapuram. Expect days averaging 28.6°C and nights around 22.7°C (mean 25.7°C) — cooler than Ramanathapuram's yearly average — with higher rainfall (106 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 | 27.8°C | 24.9°C | 21.9°C | 29.8°C | 19.6°C | 76 mm | 85% | 3.6 m/s | — |
| 2024 | 29.2°C | 26.7°C | 24.2°C | 31.0°C | 22.4°C | 166 mm | 86% | 3.3 m/s | 4.4 |
| 2023 | 28.7°C | 26.5°C | 24.2°C | 30.5°C | 21.9°C | 234 mm | 88% | 4.1 m/s | 4 |
| 2022 | 28.4°C | 25.8°C | 23.3°C | 29.5°C | 20.7°C | 262 mm | 86% | 3.6 m/s | 4.3 |
| 2021 | 28.5°C | 25.7°C | 23.0°C | 30.3°C | 19.8°C | 68 mm | 84% | 3.4 m/s | 5.1 |
| 2020 | 27.8°C | 25.5°C | 23.1°C | 29.1°C | 20.8°C | 268 mm | 88% | 4.2 m/s | 3.9 |
| 2019 | 28.6°C | 26.1°C | 23.6°C | 29.2°C | 22.4°C | 127 mm | 87% | 3.8 m/s | 4 |
| 2018 | 29.6°C | 26.4°C | 23.2°C | 30.7°C | 20.7°C | 34 mm | 81% | 3.5 m/s | 4.5 |
| 2017 | 29.1°C | 26.1°C | 23.1°C | 30.4°C | 21.2°C | 54 mm | 81% | 3.6 m/s | 4.8 |
| 2016 🔥 | 31.2°C | 27.1°C | 23.0°C | 33.7°C | 20.5°C | 64 mm | 72% | 3.5 m/s | 4.8 |
| 2015 | 28.3°C | 26.0°C | 23.8°C | 29.8°C | 21.6°C | 181 mm | 87% | 3.7 m/s | 4.2 |
| 2014 | 27.9°C | 25.4°C | 23.0°C | 30.0°C | 21.1°C | 72 mm | 87% | 3.9 m/s | 4 |
| 2013 | 28.9°C | 25.7°C | 22.5°C | 30.6°C | 20.5°C | 140 mm | 79% | 3.8 m/s | 4.4 |
| 2012 | 30.1°C | 26.8°C | 23.5°C | 31.3°C | 21.0°C | 67 mm | 79% | 4.3 m/s | 4.4 |
| 2011 | 28.4°C | 25.4°C | 22.4°C | 31.0°C | 19.7°C | 87 mm | 82% | 3.7 m/s | 4.5 |
| 2010 | 27.3°C | 25.0°C | 22.7°C | 29.7°C | 20.3°C | 131 mm | 87% | 3.3 m/s | 3.9 |
| 2009 | 28.4°C | 25.7°C | 23.1°C | 29.4°C | 20.9°C | 106 mm | 86% | 3.8 m/s | 4.2 |
| 2008 | 27.9°C | 25.1°C | 22.2°C | 29.3°C | 19.6°C | 60 mm | 84% | 3.8 m/s | 4.5 |
| 2007 | 28.3°C | 25.4°C | 22.5°C | 30.3°C | 18.7°C | 160 mm | 83% | 4.2 m/s | 4.2 |
| 2006 | 27.9°C | 25.1°C | 22.3°C | 28.7°C | 19.7°C | 30 mm | 83% | 4.4 m/s | 4.8 |
| 2005 | 27.8°C | 25.2°C | 22.7°C | 29.2°C | 20.8°C | 126 mm | 86% | 3.2 m/s | 4.5 |
| 2004 | 27.6°C | 24.7°C | 21.7°C | 28.5°C | 19.6°C | 65 mm | 85% | 4.3 m/s | 4.5 |
| 2003 | 28.6°C | 25.4°C | 22.1°C | 29.7°C | 19.9°C | 8 mm | 82% | 3.9 m/s | 5 |
| 2002 | 29.0°C | 25.6°C | 22.3°C | 30.2°C | 19.7°C | 46 mm | 80% | 4.1 m/s | 4.6 |
| 2001 | 28.0°C | 25.2°C | 22.5°C | 29.2°C | 19.8°C | 99 mm | 84% | 4.2 m/s | 4.6 |
| 2000 | 28.2°C | 25.0°C | 21.8°C | 29.9°C | 19.4°C | 79 mm | 81% | 4.3 m/s | 4.8 |
| 1999 | 28.0°C | 24.9°C | 21.8°C | 29.2°C | 19.6°C | 53 mm | 82% | 4.1 m/s | 4.7 |
| 1998 | 27.4°C | 25.0°C | 22.6°C | 29.5°C | 19.5°C | 306 mm | 86% | 4.1 m/s | 4.2 |
| 1997 | 28.9°C | 26.7°C | 24.4°C | 29.9°C | 22.1°C | 89 mm | 86% | 3.3 m/s | 4 |
| 1996 | 28.6°C | 25.3°C | 22.1°C | 34.2°C | 18.6°C | 184 mm | 80% | 3.5 m/s | 4.3 |
| 1995 | 30.3°C | 26.2°C | 22.1°C | 31.1°C | 20.6°C | 7 mm | 70% | 4.6 m/s | 4.9 |
| 1994 | 28.9°C | 25.1°C | 21.4°C | 30.4°C | 19.6°C | 19 mm | 77% | 4.4 m/s | 5.1 |
| 1993 ❄️ | 27.0°C | 24.6°C | 22.2°C | 28.4°C | 19.1°C | 241 mm | 89% | 4.3 m/s | 3.6 |
| 1992 | 27.4°C | 24.7°C | 21.9°C | 28.5°C | 19.5°C | 56 mm | 84% | 4.4 m/s | 4.5 |
| 1991 | 28.6°C | 25.4°C | 22.2°C | 30.7°C | 20.1°C | 44 mm | 82% | 3.8 m/s | 4.5 |
| 1990 | 30.1°C | 26.7°C | 23.4°C | 31.6°C | 21.2°C | 11 mm | 77% | 4.2 m/s | 4.3 |
| 1989 | 29.8°C | 26.2°C | 22.6°C | 31.6°C | 21.1°C | 41 mm | 76% | 4.2 m/s | 4.8 |
| 1988 | 30.6°C | 26.8°C | 22.9°C | 32.4°C | 20.6°C | 27 mm | 73% | 4 m/s | 4.8 |
| 1987 | 28.5°C | 25.9°C | 23.4°C | 31.0°C | 20.5°C | 231 mm | 85% | 3 m/s | 4.4 |
| 1986 | 30.1°C | 26.7°C | 23.4°C | 31.1°C | 21.2°C | 54 mm | 79% | 4 m/s | 4.6 |
| 1985 | 28.9°C | 25.8°C | 22.7°C | 30.5°C | 20.4°C | 89 mm | 80% | 3.8 m/s | 4.7 |
| 1984 | 29.3°C | 25.4°C | 21.6°C | 32.1°C | 18.7°C | 64 mm | 77% | 3.4 m/s | 4.9 |
| 1983 🌧️ | 28.1°C | 25.7°C | 23.3°C | 29.6°C | 21.7°C | 329 mm | 85% | 3.8 m/s | — |
| 1982 | 28.9°C | 25.7°C | 22.5°C | 30.3°C | 21.3°C | 53 mm | 80% | 4.2 m/s | — |
| 1981 | 27.7°C | 25.1°C | 22.4°C | 28.9°C | 19.8°C | 53 mm | 84% | 3.4 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 28.6°C with lows near 22.7°C (mean 25.7°C), based on 45 years of NASA POWER data.
December averages 106 mm of rainfall in Ramanathapuram, a relatively wet time of year. The wettest on record was 329 mm in 1983.
The hottest December reached 34.2°C in 1996. The coldest dipped to 18.6°C in 1996.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.4°C — but days and nights have moved in opposite directions. Overnight lows rose from 22.5°C to 23.3°C while daytime highs eased from 28.6°C to 28.5°C, narrowing the gap between day and night.
December is one of the cooler months of the year in Ramanathapuram and a relatively wet time of year, so plan for around 28.6°C daytime highs and 22.7°C at night.
Yes — December is the coldest month of the year in Ramanathapuram, averaging 25.7°C.
For December in Ramanathapuram, pack light layers you can adjust through the day, with typical highs of 28.6°C and lows of 22.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 82% — quite humid.
Average wind speed in December is 3.9 m/s. The windiest December on record averaged 4.6 m/s (1995).
The wettest December on record was 1983 with 329 mm. On average, December sees 106 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 Ramanathapuram 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.
