Climate averages 1991–2020
Wuxi weather
in September.
A warm, moderately 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 Wuxi: daytime highs average 27.4°C and nights cool to about 20.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 88 mm of rain on roughly 9 days, which makes September a moderately 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 Jiangyin (38 km away). In September its highs average 27.1°C, about as warm as Wuxi, with 89 mm of rain.
Among the 884 cities listed in China, Wuxi ranks joint 256th of 884 for the warmest September highs and joint 469th of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Wuxi is 1.7°C warmer than that mean.
From September to October, average highs fall by 4.8°C to 22.6°C, and monthly rainfall falls from 88 mm to 59 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
Wuxi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.0°C0.4°C | 0.4°C | 70 | 8.9 | 10.310 h |
| February | 10.2°C2.0°C | 2.0°C | 74 | 9.3 | 11.011 h |
| March | 14.5°C5.9°C | 5.9°C | 103 | 11.8 | 12.012 h |
| April | 20.3°C11.3°C | 11.3°C | 110 | 10.3 | 12.913 h |
| May | 25.2°C16.8°C | 16.8°C | 134 | 10.6 | 13.714 h |
| June | 28.1°C21.1°C | 21.1°C | 261 | 13.2 | 14.214 h |
| July | 31.5°C25.5°C | 25.5°C | 179 | 13.7 | 14.014 h |
| August | 31.2°C25.2°C | 25.2°C | 168 | 14.0 | 13.313 h |
| September, selected | 27.4°C20.6°C | 20.6°C | 88 | 9.1 | 12.412 h |
| October | 22.6°C14.8°C | 14.8°C | 59 | 6.7 | 11.411 h |
| November | 16.7°C9.0°C | 9.0°C | 62 | 7.9 | 10.611 h |
| December | 10.3°C2.6°C | 2.6°C | 48 | 6.6 | 10.110 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
- Jiangyin in SeptemberChina · 38 kmHigh 27.1°C · Low 20.0°C · 89 mm rain
- Changzhou in SeptemberChina · 39 kmHigh 27.3°C · Low 20.2°C · 82 mm rain
- Zhangjiagang in SeptemberChina · 41 kmHigh 27.0°C · Low 20.3°C · 87 mm rain
- Suzhou in SeptemberChina · 41 kmHigh 27.3°C · Low 21.1°C · 95 mm rain
- Changshu in SeptemberChina · 44 kmHigh 27.3°C · Low 20.2°C · 92 mm rain
- Yixing in SeptemberChina · 50 kmHigh 27.0°C · Low 21.2°C · 92 mm rain
- Songling in SeptemberChina · 58 kmHigh 27.4°C · Low 21.0°C · 91 mm rain
- Kunshan in SeptemberChina · 67 kmHigh 27.2°C · Low 20.7°C · 96 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 Wuxi) is explained once on the Wuxi year overview and on the Sources, method and limits page.