Thiruvananthapuram Weather in September

The climate in Thiruvananthapuram during September can be summarized as hot, humid and wet.

September is in the fall / autumn in Thiruvananthapuram and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a steamy 30°C (86°F), whilst at night 24°C (74°F) is normal.

On average September is the 6th wettest month of the year in Thiruvananthapuram with around 189mm 7.4 inches of rain making it a 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 6.2 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 Thiruvananthapuram in September 2025.