September weather forecastSuzhou, China
September
Weather in September
September brings a visible drop in temperature as Suzhou transitions from summer to autumn. The shortening daylight hours announce the end of the sun's dominion, but a consistent sunshine duration persists. Rainfall drops to 68mm (2.68") in a swift departure from the summer monsoons. As temperatures mellow, the enormity of summer weather fades, projecting September as a breather month. The weather starts to become more agreeable following the intense summer conditions.Temperature
September sees a slight reduction in average high-temperature, with a shift from a hot 31.9°C (89.4°F) in August to a warm 27.4°C (81.3°F). Suzhou usually reports an average low-temperature of 20.3°C (68.5°F) during the month of September.Heat index
In September, the average heat index is computed to be a hot 31°C (87.8°F). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Humidity
July and September, with an average relative humidity of 81%, are the most humid months.Rainfall
In Suzhou, during September, the rain falls for 17.8 days and regularly aggregates up to 68mm (2.68") of precipitation. In Suzhou, during the entire year, the rain falls for 166.5 days and collects up to 811mm (31.93") of precipitation.Snowfall
April through November are months without snowfall.Daylight
In Suzhou, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 05:33 and sunset at 18:21. On the last day of September, sunrise is at 05:50 and sunset at 17:44 CST.
Sunshine
In Suzhou, the average sunshine in September is 7.8h.UV index
In Suzhou, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 5 during September leads to these advisories:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation around mid-day is intense; avoid the Sun and stay safe. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Suzhou, China
- Average high temperature in September: 27.4°C
The warmest month (with the highest average high temperature) is August (31.9°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in September: 20.3°C
The months with the highest average low temperature are July and August (24.8°C).
The coldest month (with the lowest average low temperature) is January (2.5°C).
Average pressure in September
Suzhou, China
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is January (1027.3mbar).
The month with the lowest atmospheric pressure is July (1004.8mbar).
Average wind speed in September
Suzhou, China
- Average wind speed in September: 10.5km/h
The windiest months (with the highest average wind speed) are February and December (12.7km/h).
The calmest months (with the lowest average wind speed) are July and September (10.5km/h).
Average humidity in September
Suzhou, China
- Average humidity in September: 81%
The months with the highest relative humidity are July and September (81%).
The month with the lowest relative humidity is December (65%).
Average rainfall in September
Suzhou, China
- Average rainfall in September: 68mm
The wettest month (with the highest rainfall) is July (161mm).
The driest month (with the least rainfall) is October (25mm).
Average rainfall days in September
Suzhou, China
- Average rainfall days in September: 17.8 days
The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is December (8.5 days).
Average snowfall in September
Suzhou, China
- Average snowfall in September: 0mm
The month with the highest snowfall is January (27mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Suzhou, China
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Suzhou, China
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Suzhou, China
- Average sunshine days in September: 10.6 days
The month with the most sunshine days is December (21.1 days).
The month with the least sunshine days is July (7.7 days).
Average UV index in September
Suzhou, China
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Suzhou, China
- Average cloud cover in September: 48
The month with the most cloud cover is June (Cloud cover 50).
The month with the least cloud cover is December (Cloud cover 34).
Average visibility in September
Suzhou, China
- Average visibility in September: 8km
The months with the highest visibility are October and December (10km).
The month with the lowest visibility is September (8km).
