The climate in Mentougou during September can be summarized as warm and reasonably dry.
September is in the fall / autumn in Mentougou and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 25°C (77°F), whilst at night 13°C (55°F) is normal.
Daytime temperature | 25°C 76.9°F |
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Nightly temperature | 12.7°C 54.8°F |
Average temperature | 18.8°C 65.8°F |
Daily sunshine | 8.6 hrs |
Avg rainfall | 44 mm 1.7 ins |
Rainy days | 7 days |
Sea temperature | 19.7°C 67.4°F |
Humidity | 67% |
Windspeed | 7.2kph 5 mph |
On average September is the 4th wettest month of the year in Mentougou with around 44mm 1.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.6 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 Mentougou in September 2025.
Best places to visit in September
Hottest month: | July | 30.2°C 86.4°F |
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Driest month: | January | 2mm 0.1ins |
Sunniest month: | January | 7.1hrs |
Coldest month: | January | 0°C 32°F |
Wettest month: | July | 147mm 5.8ins |