Climate averages 1991–2020
Guankou weather
in September.
A hot, moderately wet month: the 4th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Guankou: daytime highs average 29.3°C and nights cool to about 21.3°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 86 mm of rain on roughly 10 days, which makes September a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 21 min on an average September day.
The nearest other city in this atlas is Xishan (56 km away). In September its highs average 29.4°C, about as warm as Guankou, with 82 mm of rain.
Among the 884 cities listed in China, Guankou ranks joint 121st of 884 for the warmest September highs and joint 446th of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Guankou is 3.6°C warmer than that mean.
From September to October, average highs fall by 4.8°C to 24.4°C, and monthly rainfall falls from 86 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
Guankou climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 10.5°C3.3°C | 3.3°C | 77 | 11.1 | 10.611 h |
| February | 13.2°C5.5°C | 5.5°C | 105 | 12.1 | 11.211 h |
| March | 17.1°C9.0°C | 9.0°C | 209 | 17.1 | 12.012 h |
| April | 22.9°C14.4°C | 14.4°C | 290 | 17.6 | 12.813 h |
| May | 27.0°C18.9°C | 18.9°C | 308 | 16.7 | 13.514 h |
| June | 29.6°C22.7°C | 22.7°C | 345 | 18.3 | 13.914 h |
| July | 32.8°C25.7°C | 25.7°C | 179 | 13.3 | 13.714 h |
| August | 32.6°C25.2°C | 25.2°C | 134 | 13.8 | 13.113 h |
| September, selected | 29.3°C21.3°C | 21.3°C | 86 | 10.2 | 12.312 h |
| October | 24.4°C15.9°C | 15.9°C | 62 | 7.6 | 11.512 h |
| November | 18.5°C10.0°C | 10.0°C | 83 | 8.6 | 10.811 h |
| December | 12.8°C4.6°C | 4.6°C | 57 | 7.8 | 10.410 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
- Xishan in SeptemberChina · 56 kmHigh 29.4°C · Low 21.6°C · 82 mm rain
- Zhuzhou in SeptemberChina · 59 kmHigh 29.2°C · Low 21.6°C · 85 mm rain
- Pingxiang in SeptemberChina · 64 kmHigh 28.7°C · Low 21.1°C · 97 mm rain
- Changsha in SeptemberChina · 64 kmHigh 28.8°C · Low 21.2°C · 85 mm rain
- Xiangtan in SeptemberChina · 79 kmHigh 29.0°C · Low 21.4°C · 89 mm rain
- Yichun in SeptemberChina · 84 kmHigh 28.7°C · Low 21.8°C · 106 mm rain
- Shaoshan in SeptemberChina · 112 kmHigh 28.3°C · Low 20.8°C · 81 mm rain
- Xiangxiang in SeptemberChina · 117 kmHigh 28.8°C · Low 21.3°C · 87 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 Guankou) is explained once on the Guankou year overview and on the Sources, method and limits page.