March is one of the warmer months of the year in Theni, with average highs near 36.8°C and lows around 16.5°C (mean 26.7°C). It is one of the drier months, averaging 26 mm of rainfall and 56% relative humidity across the period.
March is one of the warmer months of the year in Theni. Across 45 years of records, the warmest Marchs in Theni were 1983 and 2019 — when the month averaged 28.5°C — while the coldest was 2008 at 23.4°C. Typical March days reach 36.8°C with nights near 16.5°C. The long-term March temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.6°C | 26.9°C | 26.2°C | 26.9°C | 26.2°C | -0.4°C |
| Avg High | 36.8°C | 37.6°C | 36.1°C | 36.8°C | 36.2°C | -0.6°C |
| Avg Low | 16.3°C | 16.2°C | 16.3°C | 17.0°C | 16.3°C | 0°C |
| Avg Rain | 29 mm | 12 mm | 42 mm | 21 mm | 28 mm | -2 mm |
March temperatures in Theni have fallen by about 0.6°C between 1981–1985 and 2021–2025.
March has ranged from a record low of 13.6°C (1994) to a record high of 39.3°C (1983).
Rainfall in March is one of the drier months, averaging 26 mm, with a wettest year of 175 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
A good time to visit Theni
March is a good time to visit Theni, with days averaging 36.8°C and nights around 16.5°C (mean 26.7°C, warmer than Theni's yearly average) and low rainfall. January and February are marginally more temperate, but March still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 35.2°C | 16.0°C | 25.6°C | 47 mm | 64% | 1.3 m/s | 5.9 |
| 2024 | 37.9°C | 17.3°C | 27.6°C | 3 mm | 52% | 1.3 m/s | 6.7 |
| 2023 | 35.2°C | 14.5°C | 24.9°C | 48 mm | 66% | 1.2 m/s | 6.1 |
| 2022 | 35.6°C | 16.1°C | 25.8°C | 40 mm | 62% | 1.2 m/s | 6.2 |
| 2021 | 36.1°C | 15.1°C | 25.6°C | 22 mm | 67% | 1.2 m/s | 6.5 |
| 2020 | 37.0°C | 18.8°C | 27.9°C | 6 mm | 57% | 1.2 m/s | 6.3 |
| 2019 | 38.4°C | 18.6°C | 28.5°C | 10 mm | 47% | 1.4 m/s | 6.7 |
| 2018 | 35.9°C | 16.9°C | 26.4°C | 25 mm | 58% | 1.2 m/s | 6 |
| 2017 | 35.4°C | 17.4°C | 26.4°C | 71 mm | 67% | 1.1 m/s | 5.9 |
| 2016 | 38.0°C | 17.6°C | 27.8°C | 12 mm | 55% | 1.2 m/s | 6.6 |
| 2015 | 36.0°C | 17.6°C | 26.8°C | 19 mm | 58% | 1.3 m/s | 6.2 |
| 2014 | 37.0°C | 15.6°C | 26.3°C | 5 mm | 51% | 1.6 m/s | 6.3 |
| 2013 | 37.4°C | 16.2°C | 26.8°C | 29 mm | 58% | 1.3 m/s | 6.1 |
| 2012 | 37.0°C | 18.3°C | 27.7°C | 22 mm | 52% | 1.2 m/s | 6.1 |
| 2011 | 35.5°C | 14.7°C | 25.1°C | 6 mm | 60% | 1.2 m/s | 6.7 |
| 2010 | 37.7°C | 17.1°C | 27.4°C | 13 mm | 49% | 1.3 m/s | 6.7 |
| 2009 | 36.2°C | 15.8°C | 26.0°C | 28 mm | 53% | 1.3 m/s | 6.3 |
| 2008 ❄️ 🌧️ | 32.2°C | 14.6°C | 23.4°C | 175 mm | 74% | 1.2 m/s | 5 |
| 2007 | 37.1°C | 17.4°C | 27.2°C | 1 mm | 51% | 1.3 m/s | 6.7 |
| 2006 | 34.8°C | 18.0°C | 26.4°C | 70 mm | 70% | 1.1 m/s | 6.1 |
| 2005 | 35.9°C | 17.1°C | 26.5°C | 30 mm | 62% | 1 m/s | 6.3 |
| 2004 | 38.1°C | 16.0°C | 27.0°C | 14 mm | 47% | 1.4 m/s | 6.5 |
| 2003 | 35.8°C | 15.5°C | 25.7°C | 74 mm | 61% | 1.3 m/s | 6.4 |
| 2002 | 37.1°C | 16.4°C | 26.7°C | 13 mm | 56% | 1.2 m/s | 6.6 |
| 2001 | 38.9°C | 16.7°C | 27.8°C | 1 mm | 48% | 1.1 m/s | 6.4 |
| 2000 | 34.9°C | 15.9°C | 25.4°C | 16 mm | 59% | 1.1 m/s | 6.7 |
| 1999 | 37.5°C | 15.7°C | 26.6°C | 18 mm | 55% | 1.3 m/s | 6.9 |
| 1998 | 38.8°C | 17.1°C | 28.0°C | 2 mm | 50% | 1.2 m/s | 6.4 |
| 1997 | 37.5°C | 16.5°C | 27.0°C | 19 mm | 50% | 1.3 m/s | 6.4 |
| 1996 | 38.9°C | 15.3°C | 27.1°C | 2 mm | 43% | 1.3 m/s | 6.4 |
| 1995 | 37.2°C | 16.4°C | 26.8°C | 35 mm | 54% | 1.3 m/s | 6.5 |
| 1994 | 36.9°C | 13.6°C | 25.2°C | 5 mm | 59% | 1.3 m/s | 6.5 |
| 1993 | 36.0°C | 16.1°C | 26.0°C | 17 mm | 55% | 1.2 m/s | 6.5 |
| 1992 | 37.8°C | 15.6°C | 26.7°C | 0 mm | 35% | 1.5 m/s | 7 |
| 1991 | 38.4°C | 18.2°C | 28.3°C | 3 mm | 47% | 1.4 m/s | 6.5 |
| 1990 | 37.4°C | 17.9°C | 27.7°C | 17 mm | 53% | 1.1 m/s | 6.1 |
| 1989 | 36.9°C | 16.2°C | 26.6°C | 26 mm | 48% | 1.4 m/s | 6.7 |
| 1988 | 37.7°C | 16.7°C | 27.2°C | 23 mm | 58% | 1 m/s | 6 |
| 1987 | 36.7°C | 15.6°C | 26.2°C | 19 mm | 49% | 1.2 m/s | 6.7 |
| 1986 | 37.3°C | 16.0°C | 26.6°C | 34 mm | 62% | 1.3 m/s | 6.5 |
| 1985 | 36.5°C | 15.7°C | 26.1°C | 15 mm | 55% | 1.2 m/s | 6.4 |
| 1984 | 33.5°C | 16.1°C | 24.8°C | 73 mm | 70% | 1.2 m/s | 5.8 |
| 1983 🔥 | 39.3°C | 17.7°C | 28.5°C | 0 mm | 40% | 1.3 m/s | — |
| 1982 | 37.3°C | 17.1°C | 27.2°C | 30 mm | 52% | 1.3 m/s | — |
| 1981 | 36.4°C | 15.9°C | 26.1°C | 42 mm | 60% | 1.2 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 36.8°C with lows near 16.5°C (mean 26.7°C), based on 45 years of NASA POWER data.
March averages 26 mm of rainfall in Theni, one of the drier months. The wettest on record was 175 mm in 2008.
The hottest March reached 39.3°C in 1983. The coldest dipped to 13.6°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have fallen by about 0.6°C. Daytime highs moved from 36.6°C to 36°C and overnight lows from 16.5°C to 15.8°C over the same span.
March is one of the warmer months of the year in Theni and one of the drier months, so plan for around 36.8°C daytime highs and 16.5°C at night.
Not quite — March is the 10th coolest month in Theni, averaging 26.7°C.
For March in Theni, pack light, breathable clothing and sun protection, with typical highs of 36.8°C and lows of 16.5°C.
Relative humidity in March averages 56% — moderately humid.
Average wind speed in March is 1.2 m/s. The windiest March on record averaged 1.6 m/s (2014).
The wettest March on record was 2008 with 175 mm. On average, March 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 Theni behaves each March, 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 March specifically, along with year-by-year records and how the month has changed over the decades.
