September is close to Tenkasi's year-round average, with average highs near 32.6°C and lows around 20.7°C (mean 26.7°C). It is a relatively wet time of year, averaging 146 mm of rainfall and 84% relative humidity across the period.
September is close to Tenkasi's year-round average. Across 45 years of records, the warmest September in Tenkasi was 2015 — when the month averaged 29.1°C — while the coldest was 1992 at 24.8°C. Typical September days reach 32.6°C with nights near 20.7°C. The long-term trend is warming, about 0.6°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 25.7°C | 26.0°C | 26.2°C | 27.8°C | 27.6°C | +1.9°C |
| Avg High | 31.2°C | 31.5°C | 31.9°C | 34.7°C | 33.8°C | +2.6°C |
| Avg Low | 20.2°C | 20.6°C | 20.5°C | 21.0°C | 21.4°C | +1.2°C |
| Avg Rain | 195 mm | 134 mm | 196 mm | 91 mm | 100 mm | -95 mm |
September temperatures in Tenkasi have risen by about 2.2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 19°C (2008) to a record high of 36.4°C (2015).
Rainfall in September is a relatively wet time of year, averaging 146 mm, with a wettest year of 496 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.9°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
A good time to visit Tenkasi
September is a good time to visit Tenkasi, with days averaging 32.6°C and nights around 20.7°C (mean 26.7°C, close to Tenkasi's yearly average) and higher rainfall. January and December are marginally more temperate, but September still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 34.3°C | 22.1°C | 28.2°C | 79 mm | 81% | 3.1 m/s | 5.5 |
| 2024 | 34.6°C | 22.2°C | 28.4°C | 77 mm | 82% | 3.1 m/s | 5.7 |
| 2023 | 33.6°C | 21.8°C | 27.7°C | 131 mm | 80% | 3 m/s | 4.9 |
| 2022 | 35.4°C | 21.1°C | 28.3°C | 47 mm | 80% | 2.9 m/s | 5.9 |
| 2021 | 33.7°C | 21.0°C | 27.4°C | 115 mm | 82% | 2.9 m/s | 5.4 |
| 2020 | 31.3°C | 20.4°C | 25.9°C | 150 mm | 86% | 3 m/s | 4.6 |
| 2019 | 32.8°C | 21.0°C | 26.9°C | 163 mm | 84% | 2.5 m/s | 5.2 |
| 2018 | 36.0°C | 20.1°C | 28.1°C | 70 mm | 78% | 2.5 m/s | 6 |
| 2017 | 31.9°C | 21.2°C | 26.5°C | 158 mm | 86% | 2.5 m/s | 5.2 |
| 2016 | 35.9°C | 20.8°C | 28.3°C | 13 mm | 74% | 3.8 m/s | 6 |
| 2015 🔥 | 36.4°C | 21.8°C | 29.1°C | 133 mm | 81% | 2.5 m/s | 5.1 |
| 2014 | 33.4°C | 21.1°C | 27.3°C | 109 mm | 86% | 2.6 m/s | 5.5 |
| 2013 | 34.4°C | 21.2°C | 27.8°C | 66 mm | 83% | 3.3 m/s | 5.2 |
| 2012 | 35.2°C | 21.5°C | 28.3°C | 38 mm | 77% | 3.4 m/s | 5.9 |
| 2011 | 35.8°C | 20.8°C | 28.3°C | 56 mm | 78% | 3.4 m/s | 5.6 |
| 2010 | 35.2°C | 20.4°C | 27.8°C | 106 mm | 80% | 2.6 m/s | 5.5 |
| 2009 | 33.7°C | 20.8°C | 27.2°C | 103 mm | 84% | 3.2 m/s | 5.4 |
| 2008 | 31.5°C | 19.0°C | 25.2°C | 117 mm | 87% | 2.6 m/s | 6 |
| 2007 | 30.0°C | 21.1°C | 25.5°C | 194 mm | 90% | 2.8 m/s | 5.1 |
| 2006 | 30.3°C | 19.6°C | 25.0°C | 392 mm | 89% | 2.5 m/s | 5.2 |
| 2005 | 30.6°C | 20.9°C | 25.7°C | 209 mm | 89% | 3.2 m/s | 5.4 |
| 2004 | 30.5°C | 20.6°C | 25.5°C | 321 mm | 89% | 2.1 m/s | 5.4 |
| 2003 | 34.8°C | 20.9°C | 27.8°C | 24 mm | 82% | 2.8 m/s | 6.2 |
| 2002 | 36.0°C | 20.2°C | 28.1°C | 36 mm | 78% | 3 m/s | 6.3 |
| 2001 | 31.3°C | 19.9°C | 25.6°C | 427 mm | 88% | 2.5 m/s | 5.6 |
| 2000 | 30.5°C | 21.5°C | 26.0°C | 133 mm | 88% | 2.2 m/s | 5.6 |
| 1999 | 32.4°C | 20.7°C | 26.5°C | 37 mm | 83% | 2.5 m/s | 6 |
| 1998 | 29.6°C | 21.4°C | 25.5°C | 378 mm | 91% | 3.1 m/s | 5.5 |
| 1997 | 31.3°C | 21.0°C | 26.1°C | 351 mm | 89% | 2.4 m/s | 5.2 |
| 1996 | 30.3°C | 21.1°C | 25.7°C | 152 mm | 88% | 3 m/s | 4.5 |
| 1995 | 33.0°C | 20.7°C | 26.8°C | 68 mm | 82% | 3.3 m/s | 5.4 |
| 1994 | 31.6°C | 19.3°C | 25.4°C | 105 mm | 88% | 2.3 m/s | 5.4 |
| 1993 | 32.4°C | 20.6°C | 26.5°C | 38 mm | 82% | 2.7 m/s | 5.5 |
| 1992 ❄️ | 29.8°C | 19.9°C | 24.8°C | 139 mm | 89% | 2.5 m/s | 5.2 |
| 1991 | 31.1°C | 20.3°C | 25.7°C | 26 mm | 86% | 2.4 m/s | 5.9 |
| 1990 | 33.5°C | 20.8°C | 27.2°C | 44 mm | 77% | 2.9 m/s | 5.6 |
| 1989 | 30.2°C | 19.9°C | 25.1°C | 264 mm | 88% | 2.7 m/s | 5.1 |
| 1988 | 29.1°C | 20.6°C | 24.9°C | 398 mm | 91% | 2.8 m/s | 4.6 |
| 1987 | 31.4°C | 20.5°C | 26.0°C | 151 mm | 87% | 2.3 m/s | 5.4 |
| 1986 | 31.9°C | 20.7°C | 26.3°C | 81 mm | 82% | 3.1 m/s | 5.5 |
| 1985 | 32.9°C | 19.7°C | 26.3°C | 84 mm | 83% | 2.7 m/s | 5.4 |
| 1984 | 34.4°C | 19.8°C | 27.1°C | 52 mm | 77% | 2.7 m/s | 5.6 |
| 1983 | 31.0°C | 20.3°C | 25.6°C | 207 mm | 86% | 2.9 m/s | — |
| 1982 | 30.4°C | 19.6°C | 25.0°C | 26 mm | 86% | 2.5 m/s | — |
| 1981 🌧️ | 29.5°C | 20.8°C | 25.2°C | 496 mm | 90% | 2.6 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 32.6°C with lows near 20.7°C (mean 26.7°C), based on 45 years of NASA POWER data.
September averages 146 mm of rainfall in Tenkasi, a relatively wet time of year. The wettest on record was 496 mm in 1981.
The hottest September reached 36.4°C in 2015. The coldest dipped to 19°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2.2°C. Daytime highs moved from 31.6°C to 34.3°C and overnight lows from 20°C to 21.6°C over the same span.
September is close to Tenkasi's year-round average and a relatively wet time of year, so plan for around 32.6°C daytime highs and 20.7°C at night.
Not quite — September is the 7th coolest month in Tenkasi, averaging 26.7°C.
For September in Tenkasi, pack light, breathable clothing and sun protection, with typical highs of 32.6°C and lows of 20.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 84% — quite humid.
Average wind speed in September is 2.8 m/s. The windiest September on record averaged 3.8 m/s (2016).
The wettest September on record was 1981 with 496 mm. On average, September sees 146 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 Tenkasi behaves each September, 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 September specifically, along with year-by-year records and how the month has changed over the decades.
