September is one of the warmer months of the year in Tiruchirappalli, with average highs near 37.1°C and lows around 22.1°C (mean 29.6°C). It is a relatively wet time of year, averaging 118 mm of rainfall and 71% relative humidity across the period.
September is one of the warmer months of the year in Tiruchirappalli. Across 45 years of records, the warmest September in Tiruchirappalli was 2002 — when the month averaged 31.5°C — while the coldest was 1983 at 26.5°C. Typical September days reach 37.1°C with nights near 22.1°C. The long-term September temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 29.0°C | 29.7°C | 29.9°C | 29.7°C | 29.4°C | +0.4°C |
| Avg High | 36.6°C | 37.3°C | 37.5°C | 37.3°C | 36.5°C | -0.1°C |
| Avg Low | 21.5°C | 22.1°C | 22.4°C | 22.1°C | 22.3°C | +0.8°C |
| Avg Rain | 155 mm | 116 mm | 98 mm | 110 mm | 112 mm | -42 mm |
September temperatures in Tiruchirappalli have risen by about 0.9°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 19.7°C (1983) to a record high of 40°C (2002).
Rainfall in September is a relatively wet time of year, averaging 118 mm, with a wettest year of 288 mm.
A quieter season to visit Tiruchirappalli
If your dates are flexible, the more temperate months of January and December tend to be the most comfortable for visiting Tiruchirappalli. That said, September — with days averaging 37.1°C and nights around 22.1°C (mean 29.6°C) and higher rainfall (118 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 37.8°C | 23.0°C | 30.4°C | 133 mm | 71% | 2.2 m/s | 5.4 |
| 2024 | 38.6°C | 23.1°C | 30.8°C | 27 mm | 67% | 3.1 m/s | 6 |
| 2023 | 37.2°C | 22.1°C | 29.6°C | 113 mm | 72% | 2.7 m/s | 5.6 |
| 2022 | 35.8°C | 21.9°C | 28.8°C | 108 mm | 76% | 2.1 m/s | 5.7 |
| 2021 | 34.5°C | 21.5°C | 28.0°C | 157 mm | 77% | 2.4 m/s | 5.5 |
| 2020 | 34.9°C | 22.0°C | 28.5°C | 138 mm | 77% | 2.5 m/s | 5.1 |
| 2019 | 37.1°C | 21.9°C | 29.5°C | 194 mm | 77% | 2.4 m/s | 5.4 |
| 2018 | 39.8°C | 22.1°C | 31.0°C | 106 mm | 64% | 2 m/s | 5.9 |
| 2017 | 34.3°C | 21.4°C | 27.8°C | 143 mm | 80% | 2 m/s | 5.5 |
| 2016 | 38.5°C | 22.6°C | 30.6°C | 23 mm | 61% | 2.8 m/s | 5.9 |
| 2015 | 38.3°C | 22.5°C | 30.4°C | 81 mm | 67% | 2.3 m/s | 5.8 |
| 2014 | 38.6°C | 22.8°C | 30.7°C | 71 mm | 66% | 2.5 m/s | 5.8 |
| 2013 | 36.4°C | 21.6°C | 29.0°C | 132 mm | 75% | 2.5 m/s | 5.8 |
| 2012 | 37.5°C | 22.4°C | 30.0°C | 110 mm | 68% | 2.5 m/s | 5.7 |
| 2011 | 37.1°C | 21.9°C | 29.5°C | 138 mm | 68% | 2.8 m/s | 6 |
| 2010 | 35.6°C | 22.1°C | 28.9°C | 101 mm | 73% | 2.3 m/s | 5.3 |
| 2009 | 38.8°C | 22.8°C | 30.8°C | 67 mm | 66% | 2.9 m/s | 5.8 |
| 2008 | 37.0°C | 21.3°C | 29.1°C | 32 mm | 73% | 2.3 m/s | 6 |
| 2007 | 36.4°C | 21.9°C | 29.2°C | 46 mm | 72% | 2.8 m/s | 5.6 |
| 2006 | 35.8°C | 21.9°C | 28.9°C | 81 mm | 76% | 2.6 m/s | 5.5 |
| 2005 | 37.6°C | 22.5°C | 30.0°C | 89 mm | 70% | 2.8 m/s | 5.8 |
| 2004 | 37.0°C | 22.2°C | 29.6°C | 260 mm | 78% | 1.9 m/s | 5.2 |
| 2003 | 38.1°C | 23.1°C | 30.6°C | 97 mm | 67% | 2.6 m/s | 6.2 |
| 2002 🔥 | 40.0°C | 23.0°C | 31.5°C | 49 mm | 58% | 2.8 m/s | 6.3 |
| 2001 | 37.3°C | 22.7°C | 30.0°C | 116 mm | 73% | 2.1 m/s | 5.9 |
| 2000 | 36.6°C | 22.6°C | 29.6°C | 146 mm | 74% | 2.1 m/s | 5.8 |
| 1999 | 39.2°C | 23.1°C | 31.1°C | 46 mm | 56% | 2.8 m/s | 5.9 |
| 1998 | 35.6°C | 21.9°C | 28.8°C | 125 mm | 77% | 2.6 m/s | 5.8 |
| 1997 | 38.2°C | 22.1°C | 30.2°C | 99 mm | 70% | 2.4 m/s | 5.6 |
| 1996 | 34.8°C | 21.9°C | 28.4°C | 125 mm | 78% | 2.5 m/s | 5.1 |
| 1995 | 36.9°C | 22.4°C | 29.7°C | 73 mm | 68% | 2.8 m/s | 5.5 |
| 1994 | 39.1°C | 21.0°C | 30.1°C | 97 mm | 63% | 2.8 m/s | 5.8 |
| 1993 | 37.2°C | 22.3°C | 29.8°C | 59 mm | 68% | 2.3 m/s | 5.5 |
| 1992 | 37.0°C | 22.2°C | 29.6°C | 199 mm | 71% | 2.5 m/s | 5.5 |
| 1991 | 36.2°C | 21.7°C | 29.0°C | 183 mm | 72% | 2.1 m/s | 5.8 |
| 1990 | 39.2°C | 22.1°C | 30.7°C | 150 mm | 67% | 2.4 m/s | 5.6 |
| 1989 | 37.9°C | 22.2°C | 30.0°C | 107 mm | 68% | 2.4 m/s | 5.6 |
| 1988 | 34.4°C | 20.8°C | 27.6°C | 182 mm | 79% | 2.4 m/s | 5.5 |
| 1987 | 38.8°C | 23.0°C | 30.9°C | 95 mm | 69% | 2.1 m/s | 5.5 |
| 1986 | 37.5°C | 22.5°C | 30.0°C | 148 mm | 68% | 2.3 m/s | 5.9 |
| 1985 | 37.7°C | 21.4°C | 29.5°C | 156 mm | 71% | 2.2 m/s | 5.4 |
| 1984 | 36.4°C | 21.0°C | 28.7°C | 123 mm | 69% | 2.2 m/s | 5.8 |
| 1983 ❄️ 🌧️ | 33.3°C | 19.7°C | 26.5°C | 288 mm | 82% | 2.5 m/s | — |
| 1982 | 39.9°C | 22.0°C | 30.9°C | 66 mm | 61% | 2.7 m/s | — |
| 1981 | 33.4°C | 21.0°C | 27.2°C | 227 mm | 83% | 2.1 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 37.1°C with lows near 22.1°C (mean 29.6°C), based on 45 years of NASA POWER data.
September averages 118 mm of rainfall in Tiruchirappalli, a relatively wet time of year. The wettest on record was 288 mm in 1983.
The hottest September reached 40°C in 2002. The coldest dipped to 19.7°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.9°C. Daytime highs moved from 36.1°C to 36.8°C and overnight lows from 21°C to 22.3°C over the same span.
September is one of the warmer months of the year in Tiruchirappalli and a relatively wet time of year, so plan for around 37.1°C daytime highs and 22.1°C at night.
Not quite — September is the 6th coolest month in Tiruchirappalli, averaging 29.6°C.
For September in Tiruchirappalli, pack light, breathable clothing and sun protection, with typical highs of 37.1°C and lows of 22.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 71% — moderately humid.
Average wind speed in September is 2.4 m/s. The windiest September on record averaged 3.1 m/s (2024).
The wettest September on record was 1983 with 288 mm. On average, September sees 118 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 Tiruchirappalli 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.
