Chennai Weather in September: Climate, Temperature & Travel Tips
Avg 28.6°C · 142mm rain — September is autumn in Chennai.
- Avg high
- 32.2 °C
- Avg low
- 25.9 °C
- Avg
- 28.6 °C
- Precipitation
- 142 mm
Source: Open-Meteo Archive 2014–2023 · 10-year climate normals
Climate Overview
September in Chennai, India brings autumn conditions: average temperature 28.6°C, average high 32.2°C, average low 25.9°C. Monthly rainfall averages 142mm, making it a wet time of year.
Plan outdoor activities around midday heat with shade and frequent hydration.
What to Pack
- Lightweight breathable clothing; sun hat
- Sunscreen and ample hydration
- Compact umbrella and waterproof jacket
Best Things to Do
- Visit outdoor sights in early morning or late afternoon
- Air-conditioned museums and galleries
- Pool or waterfront activities
Pros and Cons of Visiting in September
Pros:
- Shoulder season often means smaller crowds and lower prices
Cons:
- Hot weather may limit midday outdoor activities
- Frequent rain — pack waterproof gear
Climate source: Open-Meteo Archive (2014–2023).
Colour = avg temperature · blue = cool · orange = warm
- 1 June 30.9°C
- 2 May 30.8°C
- 3 July 29.8°C
- 1 January 24.8°C
- 2 December 25.3°C
- 3 February 25.5°C
FAQ
01 What is the average temperature in Chennai in September? +
The average is 28.6°C, with a high of 32°C and a low of 26°C.
02 What is Chennai like to visit in September? +
It is autumn in Chennai, which is hot — plan around midday heat.
03 Does it rain often in Chennai during September? +
Average rainfall is 142mm, which is high — expect frequent rain.
04 What should I pack for Chennai in September? +
Lightweight breathable clothing; sun hat; Sunscreen and ample hydration.
05 Is September a peak travel season for Chennai? +
It is closer to off-season, with more reasonable prices and fewer crowds.
06 Where does this climate data come from? +
Monthly averages computed from Open-Meteo Archive 2014–2023 daily observations.
- Sources
- Open-Meteo Archive 2014-2023
- Updated
- 2026-04-17