Climate averages 1991–2020
Changshu weather
in August.
A hot, wet month: the 2nd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Changshu: daytime highs average 31.3°C and nights cool to about 24.8°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 172 mm of rain on roughly 15 days, which makes August a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 18 min on an average August day.
The nearest other city in this atlas is Zhangjiagang (31 km away). In August its highs average 30.8°C, about as warm as Changshu, with 169 mm of rain.
Among the 884 cities listed in China, Changshu ranks joint 178th of 884 for the warmest August highs and joint 566th of 884 for the driest August (rainfall, lowest first). The mean August high of those 884 cities is 29.3°C; Changshu is 2.0°C warmer than that mean.
From August to September, average highs fall by 4.0°C to 27.3°C, and monthly rainfall falls from 172 mm to 92 mm.
The annual picture
August 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
Changshu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.4°C-0.1°C | -0.1°C | 60 | 8.2 | 10.310 h |
| February | 10.6°C1.5°C | 1.5°C | 58 | 8.4 | 11.011 h |
| March | 14.8°C5.2°C | 5.2°C | 83 | 10.7 | 12.012 h |
| April | 20.6°C10.4°C | 10.4°C | 96 | 9.7 | 12.913 h |
| May | 25.5°C16.0°C | 16.0°C | 118 | 9.9 | 13.714 h |
| June | 28.3°C20.4°C | 20.4°C | 245 | 13.1 | 14.214 h |
| July | 31.8°C24.9°C | 24.9°C | 193 | 14.7 | 14.014 h |
| August, selected | 31.3°C24.8°C | 24.8°C | 172 | 14.9 | 13.313 h |
| September | 27.3°C20.2°C | 20.2°C | 92 | 9.6 | 12.412 h |
| October | 22.7°C14.3°C | 14.3°C | 51 | 6.1 | 11.411 h |
| November | 17.2°C8.5°C | 8.5°C | 54 | 7.1 | 10.611 h |
| December | 10.7°C2.1°C | 2.1°C | 40 | 6.1 | 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
August in nearby cities
- Zhangjiagang in AugustChina · 31 kmHigh 30.8°C · Low 24.8°C · 169 mm rain
- Kunshan in AugustChina · 36 kmHigh 31.2°C · Low 25.1°C · 166 mm rain
- Taicang in AugustChina · 40 kmHigh 31.1°C · Low 25.2°C · 166 mm rain
- Suzhou in AugustChina · 41 kmHigh 31.3°C · Low 25.5°C · 160 mm rain
- Wuxi in AugustChina · 44 kmHigh 31.2°C · Low 25.2°C · 168 mm rain
- Nantong in AugustChina · 45 kmHigh 30.6°C · Low 24.9°C · 178 mm rain
- Songling in AugustChina · 50 kmHigh 31.4°C · Low 25.4°C · 159 mm rain
- Jiangyin in AugustChina · 54 kmHigh 31.0°C · Low 24.7°C · 172 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 Changshu) is explained once on the Changshu year overview and on the Sources, method and limits page.