The climate in Sishui during September can be summarized as warm, humid and reasonably dry.
September is in the fall / autumn in Sishui and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (78°F), whilst at night 16°C (60°F) is normal.
Daytime temperature | 25.7°C 78.3°F |
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Nightly temperature | 15.5°C 59.9°F |
Average temperature | 20.6°C 69.1°F |
Daily sunshine | 7.3 hrs |
Avg rainfall | 75 mm 2.9 ins |
Rainy days | 9 days |
Sea temperature | 22.1°C 71.8°F |
Humidity | 71% |
Windspeed | 9kph 6 mph |
On average September is the 4th wettest month of the year in Sishui with around 75mm 2.9 inches of rain making it a reasonably dry 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 7.3 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 Sishui in September 2025.
Best places to visit in September
Hottest month: | July | 30.4°C 86.7°F |
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Driest month: | January | 9mm 0.4ins |
Sunniest month: | May | 8.7hrs |
Coldest month: | January | 3.5°C 38.3°F |
Wettest month: | July | 237mm 9.3ins |