Climate averages 1991–2020
Chongming weather
in May.
A warm, wet month: the 5th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Chongming: daytime highs average 22.2°C and nights cool to about 17.1°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 122 mm of rain on roughly 10 days, which makes May a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 45 min on an average May day.
The nearest other city in this atlas is Huilong (22 km away). In May its highs average 22.2°C, about as warm as Chongming, with 116 mm of rain.
Among the 884 cities listed in China, Chongming ranks joint 732nd of 884 for the warmest May highs and 528th of 884 for the driest May (rainfall, lowest first). The mean May high of those 884 cities is 25.2°C; Chongming is 3.0°C cooler than that mean.
From May to June, average highs rise by 3.2°C to 25.4°C, and monthly rainfall rises from 122 mm to 255 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Huilong in MayChina · 22 kmHigh 22.2°C · Low 16.6°C · 116 mm rain
- Chengqiao in MayChina · 29 kmHigh 23.9°C · Low 16.7°C · 112 mm rain
- Baoshan in MayChina · 30 kmHigh 23.9°C · Low 16.5°C · 119 mm rain
- Yanghang in MayChina · 37 kmHigh 24.2°C · Low 16.6°C · 126 mm rain
- Luodian in MayChina · 41 kmHigh 24.6°C · Low 16.5°C · 123 mm rain
- Yangpu in MayChina · 43 kmHigh 23.9°C · Low 16.5°C · 126 mm rain
- Shanghai in MayChina · 50 kmHigh 23.9°C · Low 16.4°C · 126 mm rain
- Jiading in MayChina · 50 kmHigh 24.8°C · Low 16.3°C · 123 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.