The temperatures in Chennai during September are extremely high, between 27°C and hot as 33°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of September in Chennai. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Chennai in September 2025.
If you’re planning to visit Chennai in the near future, we highly recommend that you review the 14 day weather forecast for Chennai before you arrive.
Temperatures
33° / 27°
Rainy Days
11
Snowy Days
0
Dry Days
19
Rainfall
250
mm
Sun Hours
11.3
Hrs
