Heilongjiang weather in September
September is one of the best months to visit Heilongjiang: highs of 22°C (71°F) and about 58 mm (2.3 in) of rain on average. Nights average 9°C (48°F) and cloud cover 49% (NASA POWER, 2001–2025 averages). It is the 5th wettest month of the year and the 4th warmest. Compared with August, it is cooler and drier; October brings highs of 11°C (52°F) and 24 mm (0.9 in) of rain.
Figures are long-term averages for Harbin, the largest city in Heilongjiang. See below for other places.
Is September a good time to visit Heilongjiang?
best month Weather score 81/100.
Yes. September is one of the best months for weather in Heilongjiang.
Does it rain a lot in Heilongjiang in September?
No, it is usually dry: about 58 mm (2.3 in) falls in an average September. It is the 5th wettest month of the year.
How warm is Heilongjiang in September?
Days average 22°C (71°F) and nights 9°C (48°F).
Heilongjiang weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | -14°C (7°F) | -24°C (-12°F) | 6 mm | 46% | least pleasant |
| February | -8°C (17°F) | -21°C (-5°F) | 6 mm | 45% | least pleasant |
| March | 2°C (35°F) | -10°C (14°F) | 13 mm | 50% | least pleasant |
| April | 13°C (56°F) | 0°C (31°F) | 24 mm | 58% | fair |
| May | 21°C (71°F) | 8°C (46°F) | 60 mm | 63% | best |
| June | 27°C (81°F) | 15°C (58°F) | 106 mm | 64% | fair |
| July | 29°C (84°F) | 18°C (65°F) | 139 mm | 67% | fair |
| August | 27°C (80°F) | 16°C (61°F) | 116 mm | 63% | fair |
| September | 22°C (71°F) | 9°C (48°F) | 58 mm | 49% | best |
| October | 11°C (52°F) | -1°C (31°F) | 24 mm | 45% | fair |
| November | -1°C (29°F) | -11°C (13°F) | 16 mm | 49% | least pleasant |
| December | -12°C (10°F) | -21°C (-6°F) | 9 mm | 46% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Heilongjiang in September
Weather can differ a lot within Heilongjiang: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Harbin | 22°C (71°F) | 9°C (48°F) | 58 mm | best |
| Daqing | 22°C (71°F) | 8°C (47°F) | 50 mm | best |
| Qiqihar | 21°C (70°F) | 8°C (46°F) | 53 mm | best |
| Hegang | 19°C (66°F) | 7°C (44°F) | 69 mm | best |
| Mudanjiang | 20°C (69°F) | 8°C (46°F) | 57 mm | best |
| Shuangyashan | 20°C (68°F) | 8°C (46°F) | 60 mm | best |
| Jiamusi | 20°C (69°F) | 8°C (46°F) | 63 mm | best |
| Daxing’anling | 16°C (60°F) | 4°C (39°F) | 59 mm | best |
| Bei’an | 18°C (65°F) | 6°C (42°F) | 65 mm | best |
| Jixi | 21°C (69°F) | 8°C (47°F) | 51 mm | best |
| Qitaihe | 21°C (69°F) | 8°C (47°F) | 54 mm | best |
| Hulan Ergi | 21°C (71°F) | 8°C (47°F) | 52 mm | best |