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Changshu Weather by Month
Average temperatures, rainfall and humidity for Changshu, China, month by month, built from OpenWeather's historical records. Use it to see what a typical Changshu month looks like before you travel — then check the live Changshu forecast for the days ahead.
Warmest month
August
33°C average high
Coolest month
January
2°C average low
Wettest month
June
169 mm of rain
Driest month
December
34 mm of rain
Average temperature and rainfall in Changshu by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 10°C | 2°C | -10°C / 22°C | 44 mm | 72% | 13 km/h |
| February | 11°C | 3°C | -8°C / 25°C | 83 mm | 76% | 14 km/h |
| March | 16°C | 7°C | -5°C / 33°C | 71 mm | 72% | 13 km/h |
| April | 22°C | 12°C | 0°C / 34°C | 86 mm | 69% | 13 km/h |
| May | 27°C | 18°C | 8°C / 36°C | 83 mm | 69% | 13 km/h |
| June | 30°C | 22°C | 15°C / 38°C | 169 mm | 77% | 12 km/h |
| July | 33°C | 26°C | 20°C / 41°C | 146 mm | 76% | 13 km/h |
| August | 33°C | 26°C | 19°C / 42°C | 93 mm | 73% | 13 km/h |
| September | 29°C | 22°C | 14°C / 36°C | 92 mm | 77% | 12 km/h |
| October | 23°C | 16°C | 5°C / 36°C | 44 mm | 73% | 13 km/h |
| November | 17°C | 10°C | -7°C / 31°C | 46 mm | 73% | 14 km/h |
| December | 11°C | 3°C | -8°C / 23°C | 34 mm | 71% | 13 km/h |
Best time to visit Changshu
The most comfortable time to visit Changshu is generally April to May and October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around June, totalling about 990 mm a year.
Travellers who prefer heat should aim for August, when highs average 33°C. June is the month to avoid if rain would spoil your plans — it averages 169 mm, roughly 5× the rainfall of December.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Changshu forecast for what is happening now.