Climate averages 1991–2020
Lanzhou weather
in August.
A warm, wet month: the 3rd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Lanzhou: daytime highs average 27.5°C and nights cool to about 16.7°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 100 mm of rain on roughly 13 days, which makes August a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 32 min on an average August day.
The nearest other city in this atlas is Baiyin (62 km away). In August its highs average 25.7°C, 1.8°C cooler than Lanzhou, with 73 mm of rain.
Among the 884 cities listed in China, Lanzhou ranks joint 676th of 884 for the warmest August highs and joint 80th of 884 for the driest August (rainfall, lowest first). The mean August high of those 884 cities is 29.3°C; Lanzhou is 1.8°C cooler than that mean.
From August to September, average highs fall by 5.2°C to 22.3°C, and monthly rainfall falls from 100 mm to 72 mm.
The annual picture
August 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
Lanzhou climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.7°C-8.1°C | -8.1°C | 4.2 | 1.8 | 10.010 h |
| February | 6.0°C-5.0°C | -5.0°C | 5.8 | 1.9 | 10.811 h |
| March | 12.8°C0.0°C | 0.0°C | 13 | 3.8 | 11.912 h |
| April | 19.4°C5.5°C | 5.5°C | 24 | 5.6 | 13.113 h |
| May | 23.8°C10.7°C | 10.7°C | 44 | 8.0 | 14.114 h |
| June | 27.7°C15.3°C | 15.3°C | 57 | 9.0 | 14.615 h |
| July | 29.2°C17.6°C | 17.6°C | 86 | 12.3 | 14.414 h |
| August, selected | 27.5°C16.7°C | 16.7°C | 100 | 13.2 | 13.514 h |
| September | 22.3°C12.3°C | 12.3°C | 72 | 11.7 | 12.412 h |
| October | 16.3°C6.1°C | 6.1°C | 41 | 9.0 | 11.311 h |
| November | 9.6°C-0.7°C | -0.7°C | 7.7 | 2.5 | 10.310 h |
| December | 3.4°C-5.7°C | -5.7°C | 2.0 | 0.7 | 9.810 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
August in nearby cities
- Baiyin in AugustChina · 62 kmHigh 25.7°C · Low 15.1°C · 73 mm rain
- Linxia Chengguanzhen in AugustChina · 76 kmHigh 23.5°C · Low 13.0°C · 122 mm rain
- Dingxi in AugustChina · 89 kmHigh 23.7°C · Low 13.4°C · 103 mm rain
- Nianbo in AugustChina · 136 kmHigh 23.5°C · Low 14.4°C · 92 mm rain
- Tongren (Qinghai), China in AugustChina · 175 kmHigh 20.4°C · Low 10.8°C · 161 mm rain
- Luomen in AugustChina · 180 kmHigh 26.2°C · Low 16.8°C · 115 mm rain
- Pan’an in AugustChina · 185 kmHigh 26.4°C · Low 17.0°C · 115 mm rain
- Xinxing in AugustChina · 196 kmHigh 26.7°C · Low 17.3°C · 119 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 Lanzhou) is explained once on the Lanzhou year overview and on the Sources, method and limits page.