Climate averages 1991–2020
Jieshi 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 Jieshi: daytime highs average 29.0°C and nights cool to about 25.0°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 203 mm of rain on roughly 16 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 Donghai (25 km away). In September its highs average 29.7°C, 0.7°C warmer than Jieshi, with 203 mm of rain.
Among the 884 cities listed in China, Jieshi ranks joint 143rd 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; Jieshi is 3.3°C warmer than that mean.
From September to October, average highs fall by 2.1°C to 26.9°C, and monthly rainfall falls from 203 mm to 58 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
Jieshi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.5°C12.8°C | 12.8°C | 25 | 4.1 | 10.911 h |
| February | 19.4°C13.9°C | 13.9°C | 38 | 6.5 | 11.411 h |
| March | 21.9°C16.4°C | 16.4°C | 53 | 8.2 | 12.012 h |
| April | 24.8°C20.0°C | 20.0°C | 107 | 11.4 | 12.713 h |
| May | 27.3°C23.3°C | 23.3°C | 204 | 17.0 | 13.213 h |
| June | 28.7°C25.5°C | 25.5°C | 314 | 23.2 | 13.514 h |
| July | 29.7°C26.2°C | 26.2°C | 279 | 22.6 | 13.413 h |
| August | 29.6°C26.0°C | 26.0°C | 316 | 22.9 | 12.913 h |
| September, selected | 29.0°C25.0°C | 25.0°C | 203 | 15.5 | 12.312 h |
| October | 26.9°C22.2°C | 22.2°C | 58 | 5.6 | 11.612 h |
| November | 23.9°C18.6°C | 18.6°C | 42 | 4.3 | 11.111 h |
| December | 19.9°C14.4°C | 14.4°C | 32 | 4.3 | 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
- Donghai in SeptemberChina · 25 kmHigh 29.7°C · Low 23.9°C · 203 mm rain
- Jiazi in SeptemberChina · 26 kmHigh 29.2°C · Low 25.0°C · 192 mm rain
- Shanwei in SeptemberChina · 50 kmHigh 29.1°C · Low 24.5°C · 225 mm rain
- Huicheng (Guangdong), China in SeptemberChina · 53 kmHigh 29.0°C · Low 24.9°C · 173 mm rain
- Puning in SeptemberChina · 66 kmHigh 29.8°C · Low 23.6°C · 179 mm rain
- Hepo in SeptemberChina · 69 kmHigh 30.0°C · Low 23.4°C · 173 mm rain
- Haimen in SeptemberChina · 91 kmHigh 28.9°C · Low 24.9°C · 166 mm rain
- Jieyang in SeptemberChina · 98 kmHigh 30.1°C · Low 23.5°C · 166 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 Jieshi) is explained once on the Jieshi year overview and on the Sources, method and limits page.