Hangzhou Weather in September
What's the weather like in Hangzhou (Zhejiang Sheng) in September 2025?
The climate in Hangzhou during September can be summarized as hot, humid and wet.
September is in the fall / autumn in Hangzhou and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (81°F), whilst at night 20°C (68°F) is normal.
| Daytime temperature | 27.4°C 81.3°F |
|---|---|
| Nightly temperature | 20.2°C 68.4°F |
| Average temperature | 23.8°C 74.8°F |
| Daily sunshine | 6 hrs |
| Avg rainfall | 169 mm 6.6 ins |
| Rainy days | 14 days |
| Sea temperature | 26.1°C 79°F |
| Humidity | 82% |
| Windspeed | 8.6kph 5 mph |
On average September is the 2nd wettest month of the year in Hangzhou with around 169mm 6.6 inches of rain making it a wet time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
September temperatures in Hangzhou
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 Hangzhou in September 2025.
Other monthly averages
Best places to visit in September
Hangzhou weather stats
| Hottest month: | July | 33°C 91.4°F |
|---|---|---|
| Driest month: | December | 47mm 1.9ins |
| Sunniest month: | August | 8.3hrs |
| Coldest month: | January | 7.8°C 46°F |
| Wettest month: | June | 197mm 7.8ins |
© Google
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