Climate averages 1991–2020
Hailun 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 Hailun: daytime highs average 18.7°C and nights cool to about 9.0°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 80 mm of rain on roughly 10 days, which makes September a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 37 min on an average September day.
The nearest other city in this atlas is Baiquan (66 km away). In September its highs average 18.7°C, about as warm as Hailun, with 72 mm of rain.
Among the 884 cities listed in China, Hailun ranks joint 858th 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; Hailun is 7.0°C cooler than that mean.
From September to October, average highs fall by 9.3°C to 9.4°C, and monthly rainfall falls from 80 mm to 39 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
Hailun 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-26.5°C | -26.5°C | 3.7 | 1.1 | 8.99 h |
| February | -8.9°C-22.3°C | -22.3°C | 5.5 | 1.5 | 10.210 h |
| March | 0.8°C-11.9°C | -11.9°C | 15 | 3.4 | 11.912 h |
| April | 11.6°C-0.9°C | -0.9°C | 33 | 5.7 | 13.614 h |
| May | 19.3°C6.7°C | 6.7°C | 59 | 9.9 | 15.115 h |
| June | 24.5°C13.9°C | 13.9°C | 106 | 13.3 | 15.916 h |
| July | 26.1°C17.5°C | 17.5°C | 164 | 14.4 | 15.516 h |
| August | 24.1°C15.7°C | 15.7°C | 145 | 14.2 | 14.314 h |
| September, selected | 18.7°C9.0°C | 9.0°C | 80 | 9.8 | 12.613 h |
| October | 9.4°C0.2°C | 0.2°C | 39 | 6.9 | 10.911 h |
| November | -2.6°C-10.6°C | -10.6°C | 14 | 3.3 | 9.49 h |
| December | -13.2°C-22.6°C | -22.6°C | 8.4 | 2.7 | 8.59 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 · 66 kmHigh 18.7°C · Low 9.2°C · 72 mm rain
- Wangkui in SeptemberChina · 76 kmHigh 19.5°C · Low 9.7°C · 64 mm rain
- Suihua in SeptemberChina · 89 kmHigh 19.5°C · Low 9.9°C · 72 mm rain
- Bei’an in SeptemberChina · 94 kmHigh 17.9°C · Low 8.8°C · 76 mm rain
- Tieli in SeptemberChina · 100 kmHigh 19.0°C · Low 8.5°C · 90 mm rain
- Lanxi (Heilongjiang), China in SeptemberChina · 141 kmHigh 20.3°C · Low 10.2°C · 63 mm rain
- Yichun, China in SeptemberChina · 149 kmHigh 18.4°C · Low 8.3°C · 69 mm rain
- Youhao in SeptemberChina · 150 kmHigh 18.6°C · Low 8.1°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 Hailun) is explained once on the Hailun year overview and on the Sources, method and limits page.