The climate in Chennai during October can be summarized as very hot, humid and very wet.
October is in the fall / autumn in Chennai and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a steamy 32°C (90°F), whilst at night 24°C (75°F) is normal.
Daytime temperature | 32.2°C 90°F |
---|---|
Nightly temperature | 24°C 75.2°F |
Average temperature | 28.1°C 82.6°F |
Daily sunshine | 6.7 hrs |
Avg rainfall | 259 mm 10.2 ins |
Rainy days | 9 days |
Sea temperature | 29.2°C 84.6°F |
Humidity | 78% |
Windspeed | 7.6kph 5 mph |
On average October is the 2nd wettest month of the year in Chennai with around 259mm 10.2 inches of rain making it a very wet time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.7 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 Chennai in October 2025.
Best places to visit in October
Hottest month: | May | 38.1°C 100.6°F |
---|---|---|
Driest month: | March | 4mm 0.2ins |
Sunniest month: | February | 10hrs |
Coldest month: | January | 29.1°C 84.4°F |
Wettest month: | November | 343mm 13.5ins |