Climate averages 1991–2020
Suzhou weather
in September.
A warm, wet month: the 4th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Suzhou: daytime highs average 27.3°C and nights cool to about 21.1°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 95 mm of rain on roughly 10 days, which makes September a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 23 min on an average September day.
The nearest other city in this atlas is Songling (17 km away). In September its highs average 27.4°C, about as warm as Suzhou, with 91 mm of rain.
Among the 884 cities listed in China, Suzhou ranks joint 277th of 884 for the warmest September highs and joint 538th of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Suzhou is 1.6°C warmer than that mean.
From September to October, average highs fall by 4.8°C to 22.5°C, and monthly rainfall falls from 95 mm to 62 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Suzhou climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.0°C1.1°C | 1.1°C | 78 | 9.1 | 10.410 h |
| February | 10.2°C2.7°C | 2.7°C | 82 | 9.5 | 11.111 h |
| March | 14.5°C6.5°C | 6.5°C | 116 | 12.4 | 12.012 h |
| April | 20.3°C11.7°C | 11.7°C | 119 | 10.8 | 12.913 h |
| May | 25.0°C17.2°C | 17.2°C | 142 | 10.8 | 13.714 h |
| June | 27.9°C21.3°C | 21.3°C | 275 | 14.0 | 14.114 h |
| July | 31.6°C25.7°C | 25.7°C | 171 | 13.1 | 14.014 h |
| August | 31.3°C25.5°C | 25.5°C | 160 | 14.3 | 13.313 h |
| September, selected | 27.3°C21.1°C | 21.1°C | 95 | 9.6 | 12.412 h |
| October | 22.5°C15.6°C | 15.6°C | 62 | 6.6 | 11.411 h |
| November | 16.7°C9.7°C | 9.7°C | 67 | 8.3 | 10.611 h |
| December | 10.3°C3.3°C | 3.3°C | 55 | 6.9 | 10.210 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Songling in SeptemberChina · 17 kmHigh 27.4°C · Low 21.0°C · 91 mm rain
- Kunshan in SeptemberChina · 35 kmHigh 27.2°C · Low 20.7°C · 96 mm rain
- Changshu in SeptemberChina · 41 kmHigh 27.3°C · Low 20.2°C · 92 mm rain
- Wuxi in SeptemberChina · 41 kmHigh 27.4°C · Low 20.6°C · 88 mm rain
- Taicang in SeptemberChina · 50 kmHigh 27.1°C · Low 20.9°C · 96 mm rain
- Qingpu in SeptemberChina · 52 kmHigh 27.3°C · Low 20.8°C · 98 mm rain
- Xiayang in SeptemberChina · 52 kmHigh 27.4°C · Low 20.8°C · 98 mm rain
- Jiading in SeptemberChina · 62 kmHigh 27.0°C · Low 21.0°C · 100 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Suzhou) is explained once on the Suzhou year overview and on the Sources, method and limits page.