The climate in Thiruthani during September can be summarized as very hot, humid and wet.
September is in the fall / autumn in Thiruthani and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a steamy 34°C (94°F), whilst at night 25°C (76°F) is normal.
| Daytime temperature | 34.2°C 93.5°F |
|---|---|
| Nightly temperature | 24.7°C 76.4°F |
| Average temperature | 29.4°C 84.9°F |
| Daily sunshine | 6.5 hrs |
| Avg rainfall | 133 mm 5.2 ins |
| Rainy days | 7 days |
| Sea temperature | 29°C 84.2°F |
| Humidity | 73% |
| Windspeed | 9.4kph 6 mph |
On average September is the 4th wettest month of the year in Thiruthani with around 133mm 5.2 inches of rain making it a wet time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.5 hours of sunshine per day.
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 Thiruthani in September 2025.
Best places to visit in September
| Hottest month: | May | 38.5°C 101.3°F |
|---|---|---|
| Driest month: | February | 7mm 0.3ins |
| Sunniest month: | February | 9.9hrs |
| Coldest month: | January | 29°C 84.2°F |
| Wettest month: | October | 194mm 7.6ins |