Climate averages 1991–2020
Donghai weather
in September.
A hot, very wet month: the 3rd warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Donghai: daytime highs average 29.7°C and nights cool to about 23.9°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 203 mm of rain on roughly 17 days, which makes September a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 18 min on an average September day.
The nearest other city in this atlas is Jieshi (25 km away). In September its highs average 29.0°C, 0.7°C cooler than Donghai, with 203 mm of rain.
Among the 884 cities listed in China, Donghai ranks joint 88th of 884 for the warmest September highs and joint 848th of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Donghai is 4.0°C warmer than that mean.
From September to October, average highs fall by 1.8°C to 27.9°C, and monthly rainfall falls from 203 mm to 55 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
Donghai climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 19.6°C10.9°C | 10.9°C | 25 | 4.1 | 10.911 h |
| February | 20.6°C12.4°C | 12.4°C | 39 | 6.3 | 11.411 h |
| March | 23.3°C15.3°C | 15.3°C | 61 | 9.8 | 12.012 h |
| April | 26.1°C19.1°C | 19.1°C | 119 | 13.0 | 12.713 h |
| May | 28.3°C22.5°C | 22.5°C | 223 | 19.5 | 13.213 h |
| June | 29.3°C24.8°C | 24.8°C | 315 | 24.5 | 13.514 h |
| July | 30.3°C25.4°C | 25.4°C | 281 | 24.3 | 13.413 h |
| August | 30.3°C25.2°C | 25.2°C | 334 | 25.2 | 12.913 h |
| September, selected | 29.7°C23.9°C | 23.9°C | 203 | 17.4 | 12.312 h |
| October | 27.9°C20.5°C | 20.5°C | 55 | 5.8 | 11.612 h |
| November | 25.0°C16.7°C | 16.7°C | 41 | 4.6 | 11.111 h |
| December | 20.7°C12.2°C | 12.2°C | 31 | 4.1 | 10.811 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
- Jieshi in SeptemberChina · 25 kmHigh 29.0°C · Low 25.0°C · 203 mm rain
- Shanwei in SeptemberChina · 35 kmHigh 29.1°C · Low 24.5°C · 225 mm rain
- Jiazi in SeptemberChina · 45 kmHigh 29.2°C · Low 25.0°C · 192 mm rain
- Hepo in SeptemberChina · 57 kmHigh 30.0°C · Low 23.4°C · 173 mm rain
- Huicheng (Guangdong), China in SeptemberChina · 67 kmHigh 29.0°C · Low 24.9°C · 173 mm rain
- Puning in SeptemberChina · 67 kmHigh 29.8°C · Low 23.6°C · 179 mm rain
- Anliu in SeptemberChina · 84 kmHigh 29.8°C · Low 23.0°C · 140 mm rain
- Pingshan in SeptemberChina · 95 kmHigh 30.0°C · Low 23.7°C · 194 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 Donghai) is explained once on the Donghai year overview and on the Sources, method and limits page.