Hailun Weather in September
What's the weather like in Hailun (Heilongjiang Sheng) in September 2025?
The climate in Hailun during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Hailun and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 19°C (66°F), whilst at night 7°C (45°F) is normal.
| Daytime temperature | 19°C 66.2°F |
|---|---|
| Nightly temperature | 7.2°C 45°F |
| Average temperature | 13.1°C 55.6°F |
| Daily sunshine | 8 hrs |
| Avg rainfall | 65 mm 2.6 ins |
| Rainy days | 12 days |
| Sea temperature | 17.5°C 63.5°F |
| Humidity | 70% |
| Windspeed | 11.2kph 7 mph |
On average September is the 4th wettest month of the year in Hailun with around 65mm 2.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 8 hours of sunshine per day.
September temperatures in Hailun
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Hailun in September 2025.
Other monthly averages
Best places to visit in September
Hailun weather stats
| Hottest month: | July | 26.6°C 79.9°F |
|---|---|---|
| Driest month: | January | 2mm 0.1ins |
| Sunniest month: | February | 7.7hrs |
| Coldest month: | January | -16.8°C 1.8°F |
| Wettest month: | July | 144mm 5.7ins |
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