Climate averages 1991–2020
Bei’an weather
in September.
A mild, moderately wet month: the 5th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Bei’an: daytime highs average 17.9°C and nights cool to about 8.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 76 mm of rain on roughly 9 days, which makes September a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 38 min on an average September day.
The nearest other city in this atlas is Baiquan (83 km away). In September its highs average 18.7°C, 0.8°C warmer than Bei’an, with 72 mm of rain.
Among the 884 cities listed in China, Bei’an ranks joint 870th of 884 for the warmest September highs and joint 318th of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Bei’an is 7.8°C cooler than that mean.
From September to October, average highs fall by 9.7°C to 8.3°C, and monthly rainfall falls from 76 mm to 37 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
Bei’an climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -15.1°C-26.8°C | -26.8°C | 3.5 | 1.1 | 8.89 h |
| February | -9.1°C-22.8°C | -22.8°C | 5.1 | 1.5 | 10.210 h |
| March | 0.0°C-12.6°C | -12.6°C | 13 | 2.8 | 11.912 h |
| April | 10.7°C-1.0°C | -1.0°C | 30 | 5.4 | 13.614 h |
| May | 18.5°C6.8°C | 6.8°C | 53 | 8.8 | 15.215 h |
| June | 24.0°C13.9°C | 13.9°C | 103 | 12.1 | 16.016 h |
| July | 25.8°C17.4°C | 17.4°C | 145 | 14.6 | 15.716 h |
| August | 23.7°C15.5°C | 15.5°C | 130 | 14.0 | 14.314 h |
| September, selected | 17.9°C8.8°C | 8.8°C | 76 | 9.1 | 12.613 h |
| October | 8.3°C-0.1°C | -0.1°C | 37 | 6.3 | 10.911 h |
| November | -4.0°C-11.8°C | -11.8°C | 13 | 3.2 | 9.39 h |
| December | -13.9°C-23.3°C | -23.3°C | 7.6 | 2.6 | 8.48 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
- Baiquan in SeptemberChina · 83 kmHigh 18.7°C · Low 9.2°C · 72 mm rain
- Hailun in SeptemberChina · 94 kmHigh 18.7°C · Low 9.0°C · 80 mm rain
- Nehe in SeptemberChina · 130 kmHigh 18.5°C · Low 8.5°C · 68 mm rain
- Nenjiang in SeptemberChina · 143 kmHigh 18.0°C · Low 7.6°C · 75 mm rain
- Wangkui in SeptemberChina · 160 kmHigh 19.5°C · Low 9.7°C · 64 mm rain
- Fuyu (Heilongjiang), China in SeptemberChina · 168 kmHigh 19.5°C · Low 9.8°C · 61 mm rain
- Youhao in SeptemberChina · 172 kmHigh 18.6°C · Low 8.1°C · 77 mm rain
- Yichun, China in SeptemberChina · 180 kmHigh 18.4°C · Low 8.3°C · 69 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 Bei’an) is explained once on the Bei’an year overview and on the Sources, method and limits page.