Climate averages 1991–2020
Jiangyin weather
in September.
A warm, moderately wet month: the 4th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Jiangyin: daytime highs average 27.1°C and nights cool to about 20.0°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 89 mm of rain on roughly 9 days, which makes September a moderately wet month (the 7th 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 Zhangjiagang (27 km away). In September its highs average 27.0°C, about as warm as Jiangyin, with 87 mm of rain.
Among the 884 cities listed in China, Jiangyin ranks joint 301st of 884 for the warmest September highs and joint 479th of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Jiangyin is 1.5°C warmer than that mean.
From September to October, average highs fall by 4.7°C to 22.4°C, and monthly rainfall falls from 89 mm to 52 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
Jiangyin climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.9°C-0.3°C | -0.3°C | 57 | 8.1 | 10.310 h |
| February | 10.2°C1.3°C | 1.3°C | 56 | 8.3 | 11.011 h |
| March | 14.6°C5.2°C | 5.2°C | 79 | 10.4 | 12.012 h |
| April | 20.5°C10.6°C | 10.6°C | 90 | 9.4 | 12.913 h |
| May | 25.4°C16.2°C | 16.2°C | 115 | 9.5 | 13.814 h |
| June | 28.3°C20.6°C | 20.6°C | 236 | 12.3 | 14.214 h |
| July | 31.5°C25.0°C | 25.0°C | 210 | 14.6 | 14.014 h |
| August | 31.0°C24.7°C | 24.7°C | 172 | 15.0 | 13.313 h |
| September, selected | 27.1°C20.0°C | 20.0°C | 89 | 9.1 | 12.412 h |
| October | 22.4°C14.1°C | 14.1°C | 52 | 5.8 | 11.411 h |
| November | 16.7°C8.2°C | 8.2°C | 54 | 6.8 | 10.611 h |
| December | 10.2°C1.8°C | 1.8°C | 38 | 5.7 | 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
- Zhangjiagang in SeptemberChina · 27 kmHigh 27.0°C · Low 20.3°C · 87 mm rain
- Changzhou in SeptemberChina · 33 kmHigh 27.3°C · Low 20.2°C · 82 mm rain
- Taixing in SeptemberChina · 37 kmHigh 27.0°C · Low 19.8°C · 88 mm rain
- Wuxi in SeptemberChina · 38 kmHigh 27.4°C · Low 20.6°C · 88 mm rain
- Changshu in SeptemberChina · 54 kmHigh 27.3°C · Low 20.2°C · 92 mm rain
- Rugao in SeptemberChina · 59 kmHigh 26.6°C · Low 19.6°C · 94 mm rain
- Nantong in SeptemberChina · 59 kmHigh 26.8°C · Low 20.6°C · 94 mm rain
- Jiangyan in SeptemberChina · 67 kmHigh 26.8°C · Low 19.2°C · 93 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 Jiangyin) is explained once on the Jiangyin year overview and on the Sources, method and limits page.