Climate averages 1991–2020
Nianbo weather
in September.
A mild, moderately wet month: the 5th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Nianbo: daytime highs average 18.9°C and nights cool to about 9.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 87 mm of rain on roughly 16 days, which makes September a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 27 min on an average September day.
The nearest other city in this atlas is Xining (61 km away). In September its highs average 18.0°C, 0.9°C cooler than Nianbo, with 87 mm of rain.
Among the 884 cities listed in China, Nianbo ranks joint 853rd of 884 for the warmest September highs and joint 454th of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Nianbo is 6.8°C cooler than that mean.
From September to October, average highs fall by 5.7°C to 13.3°C, and monthly rainfall falls from 87 mm to 50 mm.
The annual picture
September in context
Monthly precipitation
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
Nianbo climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.6°C-13.3°C | -13.3°C | 4.1 | 1.6 | 10.010 h |
| February | 3.1°C-9.2°C | -9.2°C | 8.1 | 2.6 | 10.811 h |
| March | 9.0°C-2.9°C | -2.9°C | 20 | 5.6 | 11.912 h |
| April | 15.5°C3.0°C | 3.0°C | 35 | 7.6 | 13.113 h |
| May | 19.7°C8.1°C | 8.1°C | 62 | 11.5 | 14.114 h |
| June | 23.1°C12.9°C | 12.9°C | 67 | 12.7 | 14.615 h |
| July | 24.7°C15.2°C | 15.2°C | 93 | 14.8 | 14.414 h |
| August | 23.5°C14.4°C | 14.4°C | 92 | 15.2 | 13.514 h |
| September, selected | 18.9°C9.8°C | 9.8°C | 87 | 15.5 | 12.412 h |
| October | 13.3°C3.0°C | 3.0°C | 50 | 10.9 | 11.311 h |
| November | 6.6°C-4.1°C | -4.1°C | 11 | 3.5 | 10.310 h |
| December | 1.1°C-10.7°C | -10.7°C | 3.3 | 1.1 | 9.710 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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
- Xining in SeptemberChina · 61 kmHigh 18.0°C · Low 8.5°C · 87 mm rain
- Qiaotou in SeptemberChina · 83 kmHigh 16.4°C · Low 6.3°C · 122 mm rain
- Tongren (Qinghai), China in SeptemberChina · 113 kmHigh 16.6°C · Low 7.2°C · 172 mm rain
- Linxia Chengguanzhen in SeptemberChina · 121 kmHigh 18.8°C · Low 9.4°C · 104 mm rain
- Lanzhou in SeptemberChina · 136 kmHigh 22.3°C · Low 12.3°C · 72 mm rain
- Baiyin in SeptemberChina · 157 kmHigh 20.4°C · Low 10.6°C · 54 mm rain
- Wuwei in SeptemberChina · 162 kmHigh 21.3°C · Low 9.9°C · 37 mm rain
- Dingxi in SeptemberChina · 223 kmHigh 18.9°C · Low 9.2°C · 84 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 Nianbo) is explained once on the Nianbo year overview and on the Sources, method and limits page.