Nattam Weather in September
What's the weather like in Nattam (Tamil Nādu) in September 2025?
The climate in Nattam during September can be summarized as hot, humid and wet.
September is in the fall / autumn in Nattam and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 31.1°C 87.9°F |
|---|---|
| Nightly temperature | 23°C 73.3°F |
| Average temperature | 27°C 80.6°F |
| Daily sunshine | 6.2 hrs |
| Avg rainfall | 126 mm 4.9 ins |
| Rainy days | 6 days |
| Sea temperature | 28.3°C 83°F |
| Humidity | 79% |
| Windspeed | 10.1kph 6 mph |
On average September is the 3rd wettest month of the year in Nattam with around 126mm 4.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.2 hours of sunshine per day.
September temperatures in Nattam
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Nattam in September 2025.
Other monthly averages
Best places to visit in September
Nattam weather stats
| Hottest month: | April | 33.4°C 92.1°F |
|---|---|---|
| Driest month: | February | 13mm 0.5ins |
| Sunniest month: | February | 9.1hrs |
| Coldest month: | December | 27.8°C 82°F |
| Wettest month: | October | 184mm 7.2ins |
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