January is one of the cooler months of the year in Tirunelveli, with average highs near 32.3°C and lows around 16.4°C (mean 24.3°C). It is one of the drier months, averaging 26 mm of rainfall and 78% relative humidity across the period.
January is one of the cooler months of the year in Tirunelveli. Across 45 years of records, the warmest January in Tirunelveli was 1991 — when the month averaged 26.1°C — while the coldest was 2006 at 21.7°C. Typical January days reach 32.3°C with nights near 16.4°C. The long-term January temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.2°C | 24.2°C | 24.4°C | 24.4°C | 24.3°C | +0.1°C |
| Avg High | 32.1°C | 32.6°C | 32.6°C | 32.2°C | 31.4°C | -0.7°C |
| Avg Low | 16.2°C | 15.8°C | 16.2°C | 16.6°C | 17.4°C | +1.2°C |
| Avg Rain | 25 mm | 12 mm | 9 mm | 16 mm | 98 mm | +72 mm |
January temperatures in Tirunelveli have risen by about 0.3°C between 1981–1985 and 2021–2025.
January has ranged from a record low of 13.8°C (1990) to a record high of 35.5°C (1983).
Rainfall in January is one of the drier months, averaging 26 mm, with a wettest year of 431 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°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 Tirunelveli
January is one of the best times to visit Tirunelveli. Expect days averaging 32.3°C and nights around 16.4°C (mean 24.3°C) — cooler than Tirunelveli's yearly average — with low rainfall (26 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 31.7°C | 17.5°C | 24.6°C | 26 mm | 80% | 3.1 m/s | 4.4 |
| 2024 | 30.7°C | 17.2°C | 23.9°C | 23 mm | 87% | 2.6 m/s | 4.7 |
| 2023 | 32.5°C | 16.6°C | 24.5°C | 16 mm | 74% | 2.7 m/s | 5.1 |
| 2022 | 31.8°C | 18.7°C | 25.2°C | 74 mm | 84% | 2.3 m/s | 5.2 |
| 2021 🌧️ | 29.0°C | 16.9°C | 23.0°C | 431 mm | 89% | 2.4 m/s | 4.3 |
| 2020 | 32.6°C | 17.3°C | 24.9°C | 17 mm | 83% | 2.3 m/s | 5.5 |
| 2019 | 35.1°C | 16.1°C | 25.6°C | 1 mm | 67% | 2.7 m/s | 5.4 |
| 2018 | 32.7°C | 16.8°C | 24.7°C | 4 mm | 77% | 2.2 m/s | 5 |
| 2017 | 33.7°C | 17.3°C | 25.5°C | 16 mm | 68% | 2.8 m/s | 4.9 |
| 2016 | 29.6°C | 16.1°C | 22.9°C | 1 mm | 86% | 2.4 m/s | 5.3 |
| 2015 | 30.9°C | 16.0°C | 23.4°C | 1 mm | 82% | 2.5 m/s | 5.4 |
| 2014 | 33.0°C | 17.5°C | 25.2°C | 36 mm | 74% | 3 m/s | 5 |
| 2013 | 33.5°C | 17.7°C | 25.6°C | 7 mm | 73% | 2.7 m/s | 5.4 |
| 2012 | 31.2°C | 15.5°C | 23.4°C | 13 mm | 78% | 2.4 m/s | 5.6 |
| 2011 | 30.2°C | 15.8°C | 23.0°C | 9 mm | 84% | 2.5 m/s | 4.7 |
| 2010 | 31.8°C | 16.8°C | 24.3°C | 71 mm | 80% | 2.7 m/s | 5.2 |
| 2009 | 33.0°C | 15.5°C | 24.2°C | 3 mm | 75% | 2.8 m/s | 5.4 |
| 2008 | 34.7°C | 16.1°C | 25.4°C | 0 mm | 72% | 2.8 m/s | 5.4 |
| 2007 | 31.8°C | 16.2°C | 24.0°C | 2 mm | 80% | 3.2 m/s | 5.1 |
| 2006 ❄️ | 28.7°C | 14.8°C | 21.7°C | 32 mm | 86% | 2.7 m/s | 4.9 |
| 2005 | 33.2°C | 16.2°C | 24.7°C | 5 mm | 75% | 2.5 m/s | 5 |
| 2004 | 34.1°C | 17.2°C | 25.6°C | 1 mm | 74% | 2.8 m/s | 5.6 |
| 2003 | 32.3°C | 17.3°C | 24.8°C | 14 mm | 79% | 3 m/s | 5.2 |
| 2002 | 33.4°C | 15.6°C | 24.5°C | 2 mm | 77% | 2.5 m/s | 5.1 |
| 2001 | 32.5°C | 17.8°C | 25.1°C | 23 mm | 75% | 3 m/s | 4.7 |
| 2000 | 32.7°C | 15.7°C | 24.2°C | 3 mm | 76% | 3.1 m/s | 4.9 |
| 1999 | 30.6°C | 14.7°C | 22.6°C | 13 mm | 84% | 2.4 m/s | 5.4 |
| 1998 | 31.8°C | 17.6°C | 24.7°C | 3 mm | 83% | 2.6 m/s | 5 |
| 1997 | 33.3°C | 15.3°C | 24.3°C | 0 mm | 73% | 2.6 m/s | 5.4 |
| 1996 | 33.2°C | 16.3°C | 24.8°C | 36 mm | 71% | 3 m/s | 5.3 |
| 1995 | 33.4°C | 17.1°C | 25.2°C | 2 mm | 72% | 2.8 m/s | 5 |
| 1994 | 29.8°C | 14.9°C | 22.4°C | 32 mm | 86% | 2.6 m/s | 5.2 |
| 1993 | 32.0°C | 15.4°C | 23.7°C | 0 mm | 78% | 2.7 m/s | 5.1 |
| 1992 | 33.2°C | 16.0°C | 24.6°C | 19 mm | 73% | 3.1 m/s | 5.5 |
| 1991 🔥 | 35.2°C | 16.9°C | 26.1°C | 1 mm | 72% | 2.7 m/s | 5.1 |
| 1990 | 33.2°C | 13.8°C | 23.5°C | 14 mm | 71% | 2.8 m/s | 5.3 |
| 1989 | 34.1°C | 16.4°C | 25.3°C | 1 mm | 70% | 3.1 m/s | 4.8 |
| 1988 | 29.1°C | 15.6°C | 22.4°C | 0 mm | 86% | 2.4 m/s | 5.4 |
| 1987 | 34.4°C | 16.0°C | 25.2°C | 3 mm | 66% | 3 m/s | 5.3 |
| 1986 | 33.0°C | 17.8°C | 25.4°C | 4 mm | 74% | 2.6 m/s | 5.1 |
| 1985 | 32.9°C | 17.0°C | 24.9°C | 68 mm | 76% | 2.6 m/s | 5.2 |
| 1984 | 28.6°C | 16.8°C | 22.7°C | 68 mm | 88% | 2.7 m/s | 4.5 |
| 1983 | 35.5°C | 15.5°C | 25.5°C | 0 mm | 70% | 2.9 m/s | — |
| 1982 | 30.6°C | 15.5°C | 23.0°C | 0 mm | 81% | 2.5 m/s | — |
| 1981 | 31.0°C | 15.3°C | 23.2°C | 83 mm | 79% | 2.3 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 32.3°C with lows near 16.4°C (mean 24.3°C), based on 45 years of NASA POWER data.
January averages 26 mm of rainfall in Tirunelveli, one of the drier months. The wettest on record was 431 mm in 2021.
The hottest January reached 35.5°C in 1983. The coldest dipped to 13.8°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.3°C. Daytime highs moved from 31.7°C to 31.1°C and overnight lows from 16°C to 17.4°C over the same span.
January is one of the cooler months of the year in Tirunelveli and one of the drier months, so plan for around 32.3°C daytime highs and 16.4°C at night.
Not quite — January is the 2nd coolest month in Tirunelveli, averaging 24.3°C.
For January in Tirunelveli, pack light, breathable clothing and sun protection, with typical highs of 32.3°C and lows of 16.4°C.
Relative humidity in January averages 78% — quite humid.
Average wind speed in January is 2.7 m/s. The windiest January on record averaged 3.2 m/s (2007).
The wettest January on record was 2021 with 431 mm. On average, January sees 26 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 Tirunelveli behaves each January, 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 January specifically, along with year-by-year records and how the month has changed over the decades.
