October is close to Chengalpattu's year-round average, with average highs near 32.6°C and lows around 23.8°C (mean 28.2°C). It is a relatively wet time of year, averaging 225 mm of rainfall and 80% relative humidity across the period.
October is close to Chengalpattu's year-round average. Across 45 years of records, the warmest October in Chengalpattu was 2006 — when the month averaged 29.6°C — while the coldest were 2000 and 2022 at 26.5°C. Typical October days reach 32.6°C with nights near 23.8°C. The long-term October temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.0°C | 28.3°C | 28.1°C | 28.4°C | 28.3°C | +0.3°C |
| Avg High | 32.2°C | 32.9°C | 32.8°C | 32.6°C | 32.6°C | +0.4°C |
| Avg Low | 23.7°C | 23.7°C | 23.4°C | 24.3°C | 23.9°C | +0.2°C |
| Avg Rain | 176 mm | 217 mm | 301 mm | 218 mm | 199 mm | +23 mm |
October temperatures in Chengalpattu have risen by about 0.3°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 21.2°C (2000) to a record high of 34.7°C (2006).
Rainfall in October is a relatively wet time of year, averaging 225 mm, with a wettest year of 464 mm.
A quieter season to visit Chengalpattu
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Chengalpattu. That said, October — with days averaging 32.6°C and nights around 23.8°C (mean 28.2°C) and higher rainfall (225 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 32.4°C | 24.0°C | 28.2°C | 304 mm | 83% | 2.4 m/s | 4.3 |
| 2024 | 33.8°C | 25.0°C | 29.4°C | 239 mm | 81% | 2.1 m/s | 4.6 |
| 2023 | 32.8°C | 24.6°C | 28.7°C | 57 mm | 79% | 2.5 m/s | 5.1 |
| 2022 | 31.7°C | 21.2°C | 26.5°C | 205 mm | 81% | 2.7 m/s | 4.5 |
| 2021 | 31.9°C | 24.7°C | 28.3°C | 237 mm | 84% | 2.5 m/s | 4.5 |
| 2020 | 32.9°C | 23.8°C | 28.4°C | 149 mm | 81% | 2.5 m/s | 4.7 |
| 2019 | 31.0°C | 24.7°C | 27.8°C | 220 mm | 84% | 2.4 m/s | 4.7 |
| 2018 | 33.3°C | 23.3°C | 28.3°C | 173 mm | 79% | 3 m/s | 4.9 |
| 2017 | 32.3°C | 24.9°C | 28.6°C | 242 mm | 82% | 2.5 m/s | 4.4 |
| 2016 | 34.1°C | 24.4°C | 29.2°C | 30 mm | 70% | 2.3 m/s | 5.4 |
| 2015 | 31.7°C | 23.9°C | 27.8°C | 147 mm | 77% | 2.5 m/s | 5.4 |
| 2014 | 32.9°C | 24.1°C | 28.5°C | 322 mm | 81% | 2.6 m/s | 4.8 |
| 2013 | 32.2°C | 24.3°C | 28.3°C | 156 mm | 82% | 2.7 m/s | 5 |
| 2012 | 33.9°C | 24.5°C | 29.2°C | 422 mm | 80% | 3.3 m/s | 4.6 |
| 2011 | 31.6°C | 24.4°C | 28.0°C | 296 mm | 80% | 2 m/s | 4.7 |
| 2010 | 32.9°C | 24.6°C | 28.7°C | 173 mm | 81% | 2.5 m/s | 4.7 |
| 2009 | 33.6°C | 24.4°C | 29.0°C | 53 mm | 72% | 2.9 m/s | 5.3 |
| 2008 | 33.3°C | 21.5°C | 27.4°C | 294 mm | 78% | 2.7 m/s | 4.9 |
| 2007 | 32.2°C | 24.3°C | 28.2°C | 327 mm | 80% | 2.7 m/s | 4.8 |
| 2006 🔥 🌧️ | 34.7°C | 24.4°C | 29.6°C | 464 mm | 81% | 2.8 m/s | 4.7 |
| 2005 | 31.8°C | 23.6°C | 27.7°C | 444 mm | 84% | 2.7 m/s | 4.5 |
| 2004 | 31.8°C | 24.4°C | 28.1°C | 366 mm | 83% | 2.9 m/s | 4.6 |
| 2003 | 33.7°C | 23.4°C | 28.6°C | 220 mm | 81% | 2.7 m/s | 5 |
| 2002 | 33.1°C | 23.2°C | 28.1°C | 310 mm | 82% | 3.2 m/s | 4.5 |
| 2001 | 32.3°C | 23.8°C | 28.0°C | 298 mm | 83% | 2.8 m/s | 4.5 |
| 2000 ❄️ | 31.7°C | 21.2°C | 26.5°C | 233 mm | 78% | 2.3 m/s | 4.8 |
| 1999 | 31.8°C | 22.3°C | 27.1°C | 221 mm | 83% | 2.4 m/s | 4.7 |
| 1998 | 31.6°C | 23.6°C | 27.6°C | 110 mm | 81% | 2.8 m/s | 4.5 |
| 1997 | 33.8°C | 24.8°C | 29.3°C | 185 mm | 77% | 2.7 m/s | 4.7 |
| 1996 | 32.0°C | 22.1°C | 27.0°C | 247 mm | 83% | 2.8 m/s | 4.4 |
| 1995 | 32.0°C | 23.9°C | 27.9°C | 180 mm | 84% | 2.9 m/s | 4.4 |
| 1994 | 32.6°C | 24.9°C | 28.7°C | 196 mm | 80% | 3 m/s | 4.7 |
| 1993 | 33.3°C | 24.2°C | 28.7°C | 272 mm | 81% | 2.9 m/s | 4.3 |
| 1992 | 33.2°C | 24.0°C | 28.6°C | 98 mm | 78% | 2.5 m/s | 4.7 |
| 1991 | 34.6°C | 23.3°C | 29.0°C | 269 mm | 78% | 3.1 m/s | 4.3 |
| 1990 | 33.7°C | 23.7°C | 28.7°C | 388 mm | 80% | 3.3 m/s | 4.2 |
| 1989 | 32.3°C | 24.5°C | 28.4°C | 132 mm | 79% | 2.1 m/s | 4.9 |
| 1988 | 32.5°C | 23.2°C | 27.9°C | 66 mm | 72% | 2.4 m/s | 5.5 |
| 1987 | 33.4°C | 23.9°C | 28.7°C | 214 mm | 81% | 3.2 m/s | 4.8 |
| 1986 | 31.1°C | 23.6°C | 27.4°C | 221 mm | 80% | 2.7 m/s | 5 |
| 1985 | 32.5°C | 23.2°C | 27.8°C | 137 mm | 78% | 3.1 m/s | 5.1 |
| 1984 | 31.4°C | 23.1°C | 27.3°C | 120 mm | 79% | 2.8 m/s | 4.9 |
| 1983 | 33.4°C | 23.0°C | 28.2°C | 156 mm | 78% | 3.1 m/s | — |
| 1982 | 32.3°C | 24.5°C | 28.4°C | 176 mm | 77% | 2.7 m/s | — |
| 1981 | 31.3°C | 23.9°C | 27.6°C | 361 mm | 82% | 2.5 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 32.6°C with lows near 23.8°C (mean 28.2°C), based on 45 years of NASA POWER data.
October averages 225 mm of rainfall in Chengalpattu, a relatively wet time of year. The wettest on record was 464 mm in 2006.
The hottest October reached 34.7°C in 2006. The coldest dipped to 21.2°C in 2000.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 0.3°C. Daytime highs moved from 32.2°C to 32.5°C and overnight lows from 23.5°C to 23.9°C over the same span.
October is close to Chengalpattu's year-round average and a relatively wet time of year, so plan for around 32.6°C daytime highs and 23.8°C at night.
Not quite — October is the 5th coolest month in Chengalpattu, averaging 28.2°C.
For October in Chengalpattu, pack light, breathable clothing and sun protection, with typical highs of 32.6°C and lows of 23.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 80% — quite humid.
Average wind speed in October is 2.7 m/s. The windiest October on record averaged 3.3 m/s (1990).
The wettest October on record was 2006 with 464 mm. On average, October sees 225 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 Chengalpattu behaves each October, 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 October specifically, along with year-by-year records and how the month has changed over the decades.
