Climate averages 1991–2020
Chaohu weather
in September.
A warm, moderately wet month: the 4th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Chaohu: daytime highs average 27.4°C and nights cool to about 20.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 80 mm of rain on roughly 8 days, which makes September a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 23 min on an average September day.
The nearest other city in this atlas is Wuhu (60 km away). In September its highs average 27.6°C, about as warm as Chaohu, with 78 mm of rain.
Among the 884 cities listed in China, Chaohu ranks joint 256th of 884 for the warmest September highs and joint 383rd of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Chaohu is 1.7°C warmer than that mean.
From September to October, average highs fall by 4.9°C to 22.5°C, and monthly rainfall falls from 80 mm to 56 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
Chaohu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.8°C0.4°C | 0.4°C | 58 | 8.4 | 10.310 h |
| February | 10.5°C2.3°C | 2.3°C | 64 | 9.0 | 11.011 h |
| March | 15.2°C6.4°C | 6.4°C | 91 | 10.9 | 12.012 h |
| April | 21.2°C12.2°C | 12.2°C | 109 | 9.5 | 12.913 h |
| May | 25.9°C17.6°C | 17.6°C | 135 | 10.1 | 13.714 h |
| June | 28.6°C21.7°C | 21.7°C | 243 | 12.3 | 14.214 h |
| July | 31.6°C25.6°C | 25.6°C | 210 | 13.9 | 14.014 h |
| August | 31.1°C25.1°C | 25.1°C | 160 | 14.0 | 13.313 h |
| September, selected | 27.4°C20.6°C | 20.6°C | 80 | 8.1 | 12.412 h |
| October | 22.5°C14.8°C | 14.8°C | 56 | 6.8 | 11.411 h |
| November | 16.4°C8.5°C | 8.5°C | 51 | 7.0 | 10.611 h |
| December | 10.1°C2.5°C | 2.5°C | 36 | 5.9 | 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
September in nearby cities
- Wuhu in SeptemberChina · 60 kmHigh 27.6°C · Low 20.4°C · 78 mm rain
- Ma’anshan in SeptemberChina · 62 kmHigh 27.3°C · Low 20.1°C · 80 mm rain
- Hefei in SeptemberChina · 63 kmHigh 27.5°C · Low 19.9°C · 79 mm rain
- Lucheng in SeptemberChina · 69 kmHigh 27.4°C · Low 20.1°C · 86 mm rain
- Tongling in SeptemberChina · 73 kmHigh 27.6°C · Low 20.3°C · 76 mm rain
- Chuzhou in SeptemberChina · 90 kmHigh 27.0°C · Low 19.4°C · 84 mm rain
- Nanjing in SeptemberChina · 100 kmHigh 27.1°C · Low 19.7°C · 81 mm rain
- Chizhou in SeptemberChina · 111 kmHigh 27.6°C · Low 20.6°C · 77 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 Chaohu) is explained once on the Chaohu year overview and on the Sources, method and limits page.