Climate averages 1991–2020
Nantong weather
in September.
A warm, wet month: the 4th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Nantong: daytime highs average 26.8°C and nights cool to about 20.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 94 mm of rain on roughly 9 days, which makes September a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 24 min on an average September day.
The nearest other city in this atlas is Jinsha (20 km away). In September its highs average 26.6°C, about as warm as Nantong, with 96 mm of rain.
Among the 884 cities listed in China, Nantong ranks joint 340th of 884 for the warmest September highs and joint 531st of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Nantong is 1.1°C warmer than that mean.
From September to October, average highs fall by 4.6°C to 22.1°C, and monthly rainfall falls from 94 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
Nantong climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.7°C0.3°C | 0.3°C | 57 | 7.8 | 10.310 h |
| February | 9.7°C1.6°C | 1.6°C | 55 | 8.2 | 11.011 h |
| March | 14.0°C5.3°C | 5.3°C | 79 | 10.3 | 12.012 h |
| April | 19.8°C10.5°C | 10.5°C | 90 | 9.4 | 12.913 h |
| May | 24.7°C16.1°C | 16.1°C | 113 | 9.1 | 13.814 h |
| June | 27.7°C20.5°C | 20.5°C | 231 | 12.4 | 14.214 h |
| July | 31.2°C25.0°C | 25.0°C | 201 | 15.3 | 14.014 h |
| August | 30.6°C24.9°C | 24.9°C | 178 | 15.2 | 13.313 h |
| September, selected | 26.8°C20.6°C | 20.6°C | 94 | 9.0 | 12.412 h |
| October | 22.1°C14.8°C | 14.8°C | 52 | 5.9 | 11.411 h |
| November | 16.5°C8.9°C | 8.9°C | 53 | 7.1 | 10.611 h |
| December | 10.1°C2.5°C | 2.5°C | 39 | 6.0 | 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
- Jinsha in SeptemberChina · 20 kmHigh 26.6°C · Low 20.6°C · 96 mm rain
- Zhangjiagang in SeptemberChina · 37 kmHigh 27.0°C · Low 20.3°C · 87 mm rain
- Juegang in SeptemberChina · 43 kmHigh 25.9°C · Low 21.4°C · 102 mm rain
- Changshu in SeptemberChina · 45 kmHigh 27.3°C · Low 20.2°C · 92 mm rain
- Rugao in SeptemberChina · 47 kmHigh 26.6°C · Low 19.6°C · 94 mm rain
- Jiangyin in SeptemberChina · 59 kmHigh 27.1°C · Low 20.0°C · 89 mm rain
- Chengqiao in SeptemberChina · 66 kmHigh 26.4°C · Low 21.5°C · 101 mm rain
- Taicang in SeptemberChina · 68 kmHigh 27.1°C · Low 20.9°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 Nantong) is explained once on the Nantong year overview and on the Sources, method and limits page.