Climate averages 1991–2020
Shanwei weather
in September.
A hot, very wet month: the 3rd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Shanwei: daytime highs average 29.1°C and nights cool to about 24.5°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 225 mm of rain on roughly 16 days, which makes September a very wet month (the 9th 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 (35 km away). In September its highs average 29.7°C, 0.6°C warmer than Shanwei, with 203 mm of rain.
Among the 884 cities listed in China, Shanwei ranks joint 135th of 884 for the warmest September highs and 871st of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Shanwei is 3.4°C warmer than that mean.
From September to October, average highs fall by 1.8°C to 27.3°C, and monthly rainfall falls from 225 mm to 62 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
Shanwei climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.9°C11.9°C | 11.9°C | 30 | 4.5 | 10.911 h |
| February | 19.7°C13.3°C | 13.3°C | 47 | 7.8 | 11.411 h |
| March | 22.2°C16.1°C | 16.1°C | 71 | 10.4 | 12.012 h |
| April | 24.8°C19.7°C | 19.7°C | 129 | 13.1 | 12.713 h |
| May | 27.2°C22.9°C | 22.9°C | 224 | 18.5 | 13.213 h |
| June | 28.6°C25.2°C | 25.2°C | 360 | 24.1 | 13.514 h |
| July | 29.5°C25.8°C | 25.8°C | 300 | 23.0 | 13.413 h |
| August | 29.6°C25.6°C | 25.6°C | 351 | 23.3 | 12.913 h |
| September, selected | 29.1°C24.5°C | 24.5°C | 225 | 16.0 | 12.312 h |
| October | 27.3°C21.5°C | 21.5°C | 62 | 6.1 | 11.612 h |
| November | 24.4°C17.6°C | 17.6°C | 41 | 4.6 | 11.111 h |
| December | 20.3°C13.2°C | 13.2°C | 35 | 4.6 | 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 · 35 kmHigh 29.7°C · Low 23.9°C · 203 mm rain
- Jieshi in SeptemberChina · 50 kmHigh 29.0°C · Low 25.0°C · 203 mm rain
- Pingshan in SeptemberChina · 69 kmHigh 30.0°C · Low 23.7°C · 194 mm rain
- Jiazi in SeptemberChina · 75 kmHigh 29.2°C · Low 25.0°C · 192 mm rain
- Hepo in SeptemberChina · 87 kmHigh 30.0°C · Low 23.4°C · 173 mm rain
- Danshui, China in SeptemberChina · 90 kmHigh 29.5°C · Low 24.3°C · 191 mm rain
- Huicheng (Guangdong), China in SeptemberChina · 101 kmHigh 29.0°C · Low 24.9°C · 173 mm rain
- Huizhou in SeptemberChina · 102 kmHigh 30.2°C · Low 23.5°C · 177 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 Shanwei) is explained once on the Shanwei year overview and on the Sources, method and limits page.