Climate averages 1991–2020
Yan’an weather
in September.
A warm, 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 warm month in Yan’an: daytime highs average 23.0°C and nights cool to about 12.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 85 mm of rain on roughly 10 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 Wayaobu (62 km away). In September its highs average 22.2°C, 0.7°C cooler than Yan’an, with 79 mm of rain.
Among the 884 cities listed in China, Yan’an ranks joint 700th of 884 for the warmest September highs and joint 432nd of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Yan’an is 2.7°C cooler than that mean.
From September to October, average highs fall by 5.8°C to 17.2°C, and monthly rainfall falls from 85 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
Yan’an climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.6°C-8.0°C | -8.0°C | 6.3 | 2.2 | 10.010 h |
| February | 6.6°C-4.8°C | -4.8°C | 9.7 | 2.5 | 10.811 h |
| March | 12.7°C-0.3°C | -0.3°C | 21 | 4.6 | 11.912 h |
| April | 19.9°C5.8°C | 5.8°C | 38 | 6.1 | 13.113 h |
| May | 24.9°C11.4°C | 11.4°C | 46 | 6.7 | 14.114 h |
| June | 29.0°C16.4°C | 16.4°C | 60 | 7.8 | 14.615 h |
| July | 29.7°C19.0°C | 19.0°C | 128 | 13.3 | 14.414 h |
| August | 27.6°C17.7°C | 17.7°C | 133 | 12.8 | 13.614 h |
| September, selected | 23.0°C12.8°C | 12.8°C | 85 | 9.8 | 12.412 h |
| October | 17.2°C6.0°C | 6.0°C | 56 | 7.7 | 11.311 h |
| November | 10.3°C-0.9°C | -0.9°C | 21 | 4.1 | 10.310 h |
| December | 3.9°C-6.0°C | -6.0°C | 4.8 | 1.4 | 9.710 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
- Wayaobu in SeptemberChina · 62 kmHigh 22.2°C · Low 12.6°C · 79 mm rain
- Hancheng in SeptemberChina · 152 kmHigh 24.9°C · Low 16.2°C · 93 mm rain
- Tongchuanshi in SeptemberChina · 173 kmHigh 23.4°C · Low 15.2°C · 103 mm rain
- Lüliang in SeptemberChina · 179 kmHigh 22.8°C · Low 12.9°C · 77 mm rain
- Yulinshi in SeptemberChina · 189 kmHigh 22.3°C · Low 12.0°C · 68 mm rain
- Linfen in SeptemberChina · 190 kmHigh 24.8°C · Low 15.3°C · 89 mm rain
- Qingyang in SeptemberChina · 193 kmHigh 20.0°C · Low 11.0°C · 103 mm rain
- Tongchuan in SeptemberChina · 195 kmHigh 23.6°C · Low 15.2°C · 103 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 Yan’an) is explained once on the Yan’an year overview and on the Sources, method and limits page.