Jiujiang Weather in September

The climate in Jiujiang during September can be summarized as hot, humid and damp.

September is in the fall / autumn in Jiujiang and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 29°C (84°F), whilst at night 20°C (68°F) is normal.

On average September is the 6th driest month of the year in Jiujiang with around 104mm 4.1 inches of rain making it a damp 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 6.6 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 Jiujiang in September 2025.