Click on a day for an hourly weather forecast
The temperatures in Tamil Nadu 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 Tamil Nadu. 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 Tamil Nadu in September 2025.
If you’re planning to visit Tamil Nadu in the near future, we highly recommend that you review the 14 day weather forecast for Tamil Nadu before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 29° / 23° | 1 | 30 | 0 | 32 mm | Good | Tamil Nadu in January |
| February | 30° / 24° | 1 | 28 | 0 | 15 mm | Good | Tamil Nadu in February |
| March | 33° / 26° | 1 | 30 | 0 | 25 mm | Good | Tamil Nadu in March |
| April | 35° / 28° | 2 | 28 | 0 | 21 mm | Ok | Tamil Nadu in April |
| May | 37° / 30° | 2 | 29 | 0 | 60 mm | Ok | Tamil Nadu in May |
| June | 36° / 29° | 6 | 24 | 0 | 118 mm | Ok | Tamil Nadu in June |
| July | 34° / 28° | 5 | 26 | 0 | 140 mm | Ok | Tamil Nadu in July |
| August | 34° / 28° | 8 | 23 | 0 | 225 mm | Bad | Tamil Nadu in August |
| September | 33° / 27° | 11 | 19 | 0 | 250 mm | Ok | Tamil Nadu in September |
| October | 32° / 27° | 11 | 20 | 0 | 292 mm | Ok | Tamil Nadu in October |
| November | 29° / 25° | 10 | 20 | 0 | 401 mm | Ok | Tamil Nadu in November |
| December | 28° / 24° | 5 | 26 | 0 | 193 mm | Perfect | Tamil Nadu in December |