Climate averages 1991–2020
Chongming weather
in July.
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.
July is a hot month in Chongming: daytime highs average 29.4°C and nights cool to about 25.7°C. By daytime temperature it is one of the warmest months of the year.
Expect about 153 mm of rain on roughly 12 days, which makes July a wet month (the joint 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 00 min on an average July day.
The nearest other city in this atlas is Huilong (22 km away). In July its highs average 29.3°C, about as warm as Chongming, with 159 mm of rain.
Among the 884 cities listed in China, Chongming ranks joint 624th of 884 for the warmest July highs and joint 236th of 884 for the driest July (rainfall, lowest first). The mean July high of those 884 cities is 30.0°C; Chongming is 0.6°C cooler than that mean.
From July to August, average highs fall by 0.1°C to 29.4°C, and monthly rainfall stays at 153 mm.
The annual picture
July 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, selected | 29.4°C25.7°C | 25.7°C | 153 | 12.4 | 14.014 h |
| August | 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
July in nearby cities
- Huilong in JulyChina · 22 kmHigh 29.3°C · Low 25.3°C · 159 mm rain
- Chengqiao in JulyChina · 29 kmHigh 30.7°C · Low 25.4°C · 176 mm rain
- Baoshan in JulyChina · 30 kmHigh 31.0°C · Low 25.4°C · 166 mm rain
- Yanghang in JulyChina · 37 kmHigh 31.1°C · Low 25.4°C · 157 mm rain
- Luodian in JulyChina · 41 kmHigh 31.3°C · Low 25.3°C · 175 mm rain
- Yangpu in JulyChina · 43 kmHigh 30.9°C · Low 25.4°C · 157 mm rain
- Shanghai in JulyChina · 50 kmHigh 30.9°C · Low 25.3°C · 157 mm rain
- Jiading in JulyChina · 50 kmHigh 31.4°C · Low 25.2°C · 175 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.