September is close to Thoothukudi's year-round average, with average highs near 32.6°C and lows around 24.5°C (mean 28.6°C). It is a relatively wet time of year, averaging 115 mm of rainfall and 75% relative humidity across the period.
September is close to Thoothukudi's year-round average. Across 45 years of records, the warmest September in Thoothukudi was 2016 — when the month averaged 30.8°C — while the coldest was 1988 at 26.7°C. Typical September days reach 32.6°C with nights near 24.5°C. The long-term trend is warming, about 0.6°C per decade.
September is a relatively wet time of year in Thoothukudi, averaging 115 mm of rainfall. The wettest September on record was 1981 with 419 mm, while the driest was 2016 at 9 mm.
Relative humidity in Thoothukudi during September averages 75%. The most humid September was 1988 at 87%, and the least humid was 2016 at 62%.
September receives about 5.8 kWh/m²/day of solar energy in Thoothukudi. The sunniest September was 2002 at 6.6 kWh/m²/day, and the cloudiest was 1996 at 4.9.
Average wind speed in Thoothukudi during September is 3.6 m/s. The windiest September was 2013 at 4.5 m/s, while the calmest was 2004 at 2.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.6°C | 27.9°C | 28.2°C | 29.7°C | 29.8°C | +2.2°C |
| Avg High | 31.4°C | 31.7°C | 32.1°C | 34.2°C | 34.2°C | +2.8°C |
| Avg Low | 23.8°C | 24.1°C | 24.4°C | 25.2°C | 25.3°C | +1.5°C |
| Avg Rain | 177 mm | 113 mm | 148 mm | 63 mm | 57 mm | -120 mm |
September temperatures in Thoothukudi have risen by about 2.2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 21.5°C (2006) to a record high of 39°C (2016).
Rainfall in September is a relatively wet time of year, averaging 115 mm, with a wettest year of 419 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.8°C per decade while lows rose 0.4°C per decade, widening the gap between day and night.
A good time to visit Thoothukudi
September is a good time to visit Thoothukudi, with days averaging 32.6°C and nights around 24.5°C (mean 28.6°C, close to Thoothukudi's yearly average) and higher rainfall. January and December are marginally more temperate, but September still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 34.7°C | 30.3°C | 25.9°C | 37.2°C | 24.7°C | 42 mm | 69% | 3.8 m/s | 5.7 |
| 2024 | 35.3°C | 30.5°C | 25.7°C | 37.6°C | 24.9°C | 39 mm | 70% | 4.2 m/s | 5.9 |
| 2023 | 33.9°C | 29.6°C | 25.3°C | 36.2°C | 24.4°C | 76 mm | 72% | 4 m/s | 5.7 |
| 2022 | 34.5°C | 29.6°C | 24.7°C | 37.5°C | 23.7°C | 41 mm | 70% | 3.5 m/s | 5.9 |
| 2021 | 33.9°C | 29.6°C | 25.3°C | 36.3°C | 23.5°C | 81 mm | 72% | 3.6 m/s | 5.9 |
| 2020 | 32.9°C | 28.9°C | 24.9°C | 35.1°C | 23.6°C | 65 mm | 74% | 4.1 m/s | 5.3 |
| 2019 | 33.1°C | 29.2°C | 25.3°C | 37.0°C | 23.8°C | 115 mm | 75% | 3.5 m/s | 5.6 |
| 2018 | 35.2°C | 30.1°C | 25.0°C | 38.3°C | 23.0°C | 45 mm | 66% | 3.1 m/s | 6 |
| 2017 | 31.9°C | 28.4°C | 24.9°C | 34.8°C | 23.9°C | 126 mm | 79% | 3.3 m/s | 5.9 |
| 2016 🔥 | 36.4°C | 30.8°C | 25.1°C | 39.0°C | 23.7°C | 9 mm | 62% | 4.4 m/s | 6.3 |
| 2015 | 33.6°C | 29.6°C | 25.6°C | 37.9°C | 24.2°C | 102 mm | 72% | 3.5 m/s | 5.9 |
| 2014 | 33.6°C | 29.4°C | 25.2°C | 37.6°C | 24.4°C | 75 mm | 71% | 3.6 m/s | 6.2 |
| 2013 | 33.9°C | 29.5°C | 25.0°C | 37.6°C | 23.7°C | 18 mm | 70% | 4.5 m/s | 5.9 |
| 2012 | 35.4°C | 30.5°C | 25.6°C | 37.5°C | 24.5°C | 23 mm | 64% | 4.4 m/s | 6.2 |
| 2011 | 35.3°C | 30.2°C | 25.2°C | 38.5°C | 23.8°C | 26 mm | 65% | 4.4 m/s | 6.3 |
| 2010 | 33.9°C | 29.5°C | 25.0°C | 36.8°C | 23.3°C | 89 mm | 69% | 3.4 m/s | 5.9 |
| 2009 | 34.1°C | 29.6°C | 25.1°C | 37.4°C | 24.0°C | 40 mm | 71% | 4.3 m/s | 6.2 |
| 2008 | 33.0°C | 28.6°C | 24.1°C | 35.4°C | 22.3°C | 58 mm | 75% | 3.7 m/s | 6.4 |
| 2007 | 31.6°C | 28.0°C | 24.5°C | 33.5°C | 23.7°C | 103 mm | 79% | 3.9 m/s | 5.8 |
| 2006 | 30.1°C | 27.1°C | 24.2°C | 32.9°C | 21.5°C | 298 mm | 84% | 3.4 m/s | 5.9 |
| 2005 | 31.2°C | 27.7°C | 24.1°C | 33.8°C | 23.5°C | 153 mm | 82% | 4 m/s | 6 |
| 2004 | 29.8°C | 26.9°C | 24.1°C | 34.3°C | 23.0°C | 288 mm | 84% | 2.8 m/s | 5.8 |
| 2003 | 33.8°C | 29.2°C | 24.6°C | 36.0°C | 23.8°C | 37 mm | 73% | 3.6 m/s | 6.5 |
| 2002 | 35.7°C | 30.3°C | 24.8°C | 37.8°C | 23.7°C | 23 mm | 65% | 4 m/s | 6.6 |
| 2001 | 31.0°C | 27.5°C | 24.1°C | 34.0°C | 22.6°C | 335 mm | 81% | 3.3 m/s | 6.2 |
| 2000 | 30.5°C | 27.3°C | 24.2°C | 32.4°C | 23.5°C | 142 mm | 83% | 3 m/s | 6 |
| 1999 | 32.8°C | 28.6°C | 24.4°C | 35.6°C | 23.2°C | 39 mm | 74% | 3.5 m/s | 6.3 |
| 1998 | 29.7°C | 26.8°C | 24.0°C | 32.0°C | 23.3°C | 283 mm | 86% | 3.9 m/s | 5.9 |
| 1997 | 30.6°C | 27.3°C | 24.1°C | 33.7°C | 23.2°C | 241 mm | 83% | 3.3 m/s | 5.6 |
| 1996 | 30.6°C | 27.2°C | 23.9°C | 32.5°C | 23.4°C | 115 mm | 82% | 3.8 m/s | 4.9 |
| 1995 | 33.6°C | 29.1°C | 24.6°C | 36.0°C | 23.3°C | 41 mm | 72% | 4.1 m/s | 5.2 |
| 1994 | 31.1°C | 27.5°C | 23.8°C | 34.5°C | 22.3°C | 98 mm | 80% | 3.1 m/s | 5.6 |
| 1993 | 32.7°C | 28.4°C | 24.2°C | 35.2°C | 23.0°C | 37 mm | 73% | 3.4 m/s | 5.6 |
| 1992 | 30.3°C | 27.0°C | 23.8°C | 32.4°C | 22.7°C | 138 mm | 82% | 3.2 m/s | 5.2 |
| 1991 | 31.8°C | 27.8°C | 23.9°C | 33.6°C | 22.9°C | 67 mm | 79% | 3.1 m/s | 5.6 |
| 1990 | 33.6°C | 29.0°C | 24.4°C | 35.4°C | 23.2°C | 69 mm | 70% | 3.3 m/s | 5.4 |
| 1989 | 30.5°C | 27.1°C | 23.7°C | 33.1°C | 22.2°C | 236 mm | 82% | 3.5 m/s | 5.3 |
| 1988 ❄️ | 29.5°C | 26.7°C | 24.0°C | 31.5°C | 22.7°C | 323 mm | 87% | 3.5 m/s | 5.1 |
| 1987 | 31.5°C | 27.8°C | 24.2°C | 34.8°C | 23.3°C | 142 mm | 80% | 3.2 m/s | 5.4 |
| 1986 | 32.5°C | 28.2°C | 24.0°C | 35.0°C | 23.1°C | 87 mm | 74% | 3.8 m/s | 5.6 |
| 1985 | 32.5°C | 28.1°C | 23.8°C | 35.7°C | 22.7°C | 98 mm | 74% | 3.5 m/s | 5.6 |
| 1984 | 33.2°C | 28.6°C | 24.0°C | 36.1°C | 22.8°C | 69 mm | 70% | 3.2 m/s | 5.7 |
| 1983 | 30.7°C | 27.1°C | 23.5°C | 33.0°C | 22.4°C | 195 mm | 80% | 3.6 m/s | — |
| 1982 | 32.4°C | 27.9°C | 23.5°C | 34.1°C | 21.8°C | 29 mm | 76% | 3.6 m/s | — |
| 1981 🌧️ | 29.7°C | 26.8°C | 23.9°C | 31.4°C | 23.0°C | 419 mm | 86% | 3.3 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 24.5°C (mean 28.6°C), based on 45 years of NASA POWER data.
September averages 115 mm of rainfall in Thoothukudi, a relatively wet time of year. The wettest on record was 419 mm in 1981.
The hottest September reached 39°C in 2016. The coldest dipped to 21.5°C in 2006.
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 31.7°C to 34.5°C and overnight lows from 23.7°C to 25.4°C over the same span.
September is close to Thoothukudi's year-round average and a relatively wet time of year, so plan for around 32.6°C daytime highs and 24.5°C at night.
Not quite — September is the 8th coolest month in Thoothukudi, averaging 28.6°C.
For September in Thoothukudi, pack light, breathable clothing and sun protection, with typical highs of 32.6°C and lows of 24.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 75% — quite humid.
Average wind speed in September is 3.6 m/s. The windiest September on record averaged 4.5 m/s (2013).
The wettest September on record was 1981 with 419 mm. On average, September sees 115 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 Thoothukudi 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.
