Climate averages 1991–2020
Shanghai weather
in September.
A warm, wet month: the joint 3rd 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 Shanghai: daytime highs average 26.8°C and nights cool to about 21.4°C. By daytime temperature it is the joint 3rd warmest of the 12 months.
Expect about 106 mm of rain on roughly 11 days, which makes September a wet month (the 8th 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 Xuhui (3 km away). In September its highs average 27.0°C, about as warm as Shanghai, with 106 mm of rain.
Among the 884 cities listed in China, Shanghai ranks joint 340th of 884 for the warmest September highs and joint 592nd of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Shanghai is 1.1°C warmer than that mean.
From September to October, average highs fall by 4.6°C to 22.2°C, and monthly rainfall falls from 106 mm to 61 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
Shanghai climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.4°C1.5°C | 1.5°C | 63 | 8.4 | 10.410 h |
| February | 10.0°C2.7°C | 2.7°C | 62 | 8.8 | 11.111 h |
| March | 13.8°C6.1°C | 6.1°C | 96 | 11.3 | 12.012 h |
| April | 19.1°C11.0°C | 11.0°C | 104 | 10.2 | 12.913 h |
| May | 23.9°C16.4°C | 16.4°C | 126 | 10.0 | 13.714 h |
| June | 26.8°C20.9°C | 20.9°C | 270 | 14.4 | 14.114 h |
| July | 30.9°C25.3°C | 25.3°C | 157 | 13.9 | 14.014 h |
| August | 30.6°C25.5°C | 25.5°C | 154 | 14.8 | 13.313 h |
| September, selected | 26.8°C21.4°C | 21.4°C | 106 | 10.8 | 12.412 h |
| October | 22.2°C15.9°C | 15.9°C | 61 | 6.0 | 11.411 h |
| November | 17.1°C10.3°C | 10.3°C | 56 | 7.3 | 10.611 h |
| December | 10.9°C3.9°C | 3.9°C | 45 | 6.7 | 10.210 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
- Xuhui in SeptemberChina · 3 kmHigh 27.0°C · Low 21.1°C · 106 mm rain
- Putuo in SeptemberChina · 7 kmHigh 26.9°C · Low 21.3°C · 106 mm rain
- Yangpu in SeptemberChina · 7 kmHigh 26.7°C · Low 21.5°C · 106 mm rain
- Minhang in SeptemberChina · 15 kmHigh 27.1°C · Low 21.1°C · 106 mm rain
- Yanghang in SeptemberChina · 17 kmHigh 26.7°C · Low 21.4°C · 106 mm rain
- Baoshan in SeptemberChina · 21 kmHigh 26.7°C · Low 21.5°C · 104 mm rain
- Xinqiao in SeptemberChina · 23 kmHigh 27.3°C · Low 20.8°C · 106 mm rain
- Luodian in SeptemberChina · 24 kmHigh 26.9°C · Low 21.2°C · 100 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 Shanghai) is explained once on the Shanghai year overview and on the Sources, method and limits page.
Putuo, Yangpu and Xuhui lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.