Climate averages 1991–2020
Chongming weather
in August.
A hot, wet month: one of the warmest and the joint 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Chongming: daytime highs average 29.4°C and nights cool to about 26.0°C. By daytime temperature it is one of the warmest months of the year.
Expect about 153 mm of rain on roughly 14 days, which makes August a wet month (the joint 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 Huilong (22 km away). In August its highs average 29.3°C, about as warm as Chongming, with 153 mm of rain.
Among the 884 cities listed in China, Chongming ranks joint 547th of 884 for the warmest August highs and joint 383rd of 884 for the driest August (rainfall, lowest first). The mean August high of those 884 cities is 29.3°C; Chongming is 0.1°C warmer than that mean.
From August to September, average highs fall by 3.4°C to 26.0°C, and monthly rainfall falls from 153 mm to 111 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
Chongming climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.4°C2.7°C | 2.7°C | 67 | 8.8 | 10.310 h |
| February | 8.6°C3.6°C | 3.6°C | 69 | 8.9 | 11.011 h |
| March | 12.2°C6.8°C | 6.8°C | 105 | 11.4 | 12.012 h |
| April | 17.2°C11.7°C | 11.7°C | 106 | 10.5 | 12.913 h |
| May | 22.2°C17.1°C | 17.1°C | 122 | 9.6 | 13.714 h |
| June | 25.4°C21.4°C | 21.4°C | 255 | 13.3 | 14.214 h |
| July | 29.4°C25.7°C | 25.7°C | 153 | 12.4 | 14.014 h |
| August, selected | 29.4°C26.0°C | 26.0°C | 153 | 13.5 | 13.313 h |
| September | 26.0°C22.4°C | 22.4°C | 111 | 10.1 | 12.412 h |
| October | 21.4°C17.4°C | 17.4°C | 65 | 6.1 | 11.411 h |
| November | 16.2°C11.6°C | 11.6°C | 66 | 7.8 | 10.611 h |
| December | 10.1°C5.3°C | 5.3°C | 51 | 6.8 | 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
- Huilong in AugustChina · 22 kmHigh 29.3°C · Low 25.7°C · 153 mm rain
- Chengqiao in AugustChina · 29 kmHigh 30.2°C · Low 25.5°C · 162 mm rain
- Baoshan in AugustChina · 30 kmHigh 30.6°C · Low 25.6°C · 157 mm rain
- Yanghang in AugustChina · 37 kmHigh 30.7°C · Low 25.5°C · 154 mm rain
- Luodian in AugustChina · 41 kmHigh 30.9°C · Low 25.4°C · 164 mm rain
- Yangpu in AugustChina · 43 kmHigh 30.6°C · Low 25.6°C · 154 mm rain
- Shanghai in AugustChina · 50 kmHigh 30.6°C · Low 25.5°C · 154 mm rain
- Jiading in AugustChina · 50 kmHigh 31.0°C · Low 25.2°C · 164 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 Chongming) is explained once on the Chongming year overview and on the Sources, method and limits page.