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Hailun, Heilongjiang Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Hailun, Heilongjiang?
Hailun, Heilongjiang gets 588 mm of precipitation a year over about 95 rainy days. July is the warmest month (average high 27°C) and January the coldest (average low -26°C).
Humid continental climate
Hailun, Heilongjiang has warm summers and cold winters. Daytime highs range from about -16°C in January to 27°C in July. July is usually the wettest month. The most comfortable time to visit is typically May to June and August to September, when daytime highs sit near 23°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | -23° | -13° |
| Spring | Mar–May | -1° | 11° |
| Summer | Jun–Aug | 16° | 26° |
| Autumn | Sep–Nov | -2° | 9° |
How much rain does Hailun get?
Hailun gets 588 mm of precipitation in an average year, spread over about 95 days with measurable rain. That is more rainy days than 50% of China.
July is the wettest month, with 145 mm. January is the driest, with 4 mm. July has the most rainy days, about 14.
The longest dry spell in the last five years lasted 31 days, to February 13, 2024.
From October 2025 to September 2026 Hailun got 616 mm of rain, against a normal of 588 mm for those months. August 2026 had the most, with 290 mm.
Hailun weather by month
Hailun weather in January
In January, Hailun averages a high of -16°C and a low of -26°C. It gets 4 mm of precipitation over about 4 rainy days. Estimated sunshine is 60% of daylight hours, derived from ERA5 cloud cover. The January record high is 1°C (2023) and the record low is -41°C (1980).
Hailun weather in February
In February, Hailun averages a high of -10°C and a low of -22°C. It gets 4 mm of precipitation over about 3 rainy days. Estimated sunshine is 56% of daylight hours, derived from ERA5 cloud cover. The February record high is 6°C (1998) and the record low is -37°C (2001).
Hailun weather in March
In March, Hailun averages a high of 0°C and a low of -11°C. It gets 10 mm of precipitation over about 4 rainy days. Estimated sunshine is 56% of daylight hours, derived from ERA5 cloud cover. The March record high is 19°C (1990) and the record low is -32°C (1984).
Hailun weather in April
In April, Hailun averages a high of 12°C and a low of -1°C. It gets 23 mm of precipitation over about 6 rainy days. Estimated sunshine is 49% of daylight hours, derived from ERA5 cloud cover. The April record high is 28°C (2008) and the record low is -13°C (1977).
Hailun weather in May
In May, Hailun averages a high of 20°C and a low of 7°C. It gets 48 mm of precipitation over about 11 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The May record high is 34°C (2013) and the record low is -8°C (1972). May is one of the most comfortable months to visit.
Hailun weather in June
In June, Hailun averages a high of 26°C and a low of 14°C. It gets 108 mm of precipitation over about 14 rainy days. Estimated sunshine is 33% of daylight hours, derived from ERA5 cloud cover. The June record high is 38°C (2001) and the record low is 3°C (1992). June is one of the most comfortable months to visit.
Hailun weather in July
In July, Hailun averages a high of 27°C and a low of 18°C. It gets 145 mm of precipitation over about 14 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The July record high is 37°C (1982) and the record low is 8°C (1990).
Hailun weather in August
In August, Hailun averages a high of 25°C and a low of 16°C. It gets 137 mm of precipitation over about 13 rainy days. Estimated sunshine is 34% of daylight hours, derived from ERA5 cloud cover. The August record high is 36°C (1982) and the record low is 3°C (1976). August is one of the most comfortable months to visit.
Hailun weather in September
In September, Hailun averages a high of 20°C and a low of 8°C. It gets 67 mm of precipitation over about 9 rainy days. Estimated sunshine is 49% of daylight hours, derived from ERA5 cloud cover. The September record high is 32°C (2010) and the record low is -5°C (1981). September is one of the most comfortable months to visit.
Hailun weather in October
In October, Hailun averages a high of 11°C and a low of -1°C. It gets 23 mm of precipitation over about 6 rainy days. Estimated sunshine is 60% of daylight hours, derived from ERA5 cloud cover. The October record high is 24°C (2006) and the record low is -19°C (1982).
Hailun weather in November
In November, Hailun averages a high of -3°C and a low of -13°C. It gets 10 mm of precipitation over about 5 rainy days. Estimated sunshine is 48% of daylight hours, derived from ERA5 cloud cover. The November record high is 13°C (2006) and the record low is -32°C (2017).
Hailun weather in December
In December, Hailun averages a high of -14°C and a low of -23°C. It gets 7 mm of precipitation over about 6 rainy days. Estimated sunshine is 65% of daylight hours, derived from ERA5 cloud cover. The December record high is 3°C (2004) and the record low is -38°C (2021).
Sunshine, humidity and wind in Hailun
December is the sunniest month in Hailun, with estimated sunshine of 65% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 33%. The annual cloud-cover estimate is 49% of daylight hours; it is not a measurement of sunshine duration. Hailun is sunnier than 60% of China.
Humidity peaks in August at 82% and is lowest in April at 46%.
Hailun has about 4 days a year above 32°C. Hailun is cooler than 92% of China.
First and last freeze in Hailun
The first fall freeze in Hailun typically comes around October 3, and the last spring freeze around April 30. That leaves a frost-free growing season of about 156 days.
Hailun weather records
These records cover HAILUN during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Hailun station is 38°C, on June 25, 2001. The coldest is -41°C, on January 24, 2018.
The wettest day in the available station history brought 149 mm of precipitation, on August 4, 2023.
43 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.3°C per decade since 1970.
The best time to visit Hailun
The most comfortable time to visit is typically May to June and August to September, when daytime highs sit near 23°C.
Winter (December–February) is cold, with average highs around -13°C and lows near -23°C.
Spring (March–May) is chilly, with average highs around 11°C and lows near -1°C.
Summer (June–August) is warm, with average highs around 26°C and lows near 16°C. It can feel humid.
Autumn (September–November) is chilly, with average highs around 9°C and lows near -2°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | -26° | -16° | 4.1 mm | 4 | 69% | 60% | 1° | -41° |
| February | -22° | -10° | 4.1 mm | 3 | 64% | 56% | 6° | -37° |
| March | -11° | 0° | 10 mm | 4 | 51% | 56% | 19° | -32° |
| April | -1° | 12° | 23 mm | 6 | 46% | 49% | 28° | -13° |
| May | 7° | 20° | 48 mm | 11 | 49% | 44% | 34° | -8° |
| June | 14° | 26° | 108 mm | 14 | 68% | 33% | 38° | 3° |
| July | 18° | 27° | 145 mm | 14 | 79% | 36% | 37° | 8° |
| August | 16° | 25° | 137 mm | 13 | 82% | 34% | 36° | 3° |
| September | 8° | 20° | 67 mm | 9 | 72% | 49% | 32° | -5° |
| October | -1° | 11° | 23 mm | 6 | 60% | 60% | 24° | -19° |
| November | -13° | -3° | 10 mm | 5 | 67% | 48% | 13° | -32° |
| December | -23° | -14° | 7.4 mm | 6 | 67% | 65% | 3° | -38° |
Station: HAILUN, 4 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Hailun climate questions
How much rain does Hailun get?
Hailun gets 588 mm of precipitation in an average year, over about 95 rainy days.
What is the wettest month in Hailun?
July is the wettest month in Hailun, with 145 mm. January is the driest, with 4 mm.
How many rainy days does Hailun have a year?
Hailun has about 95 days with measurable rain in an average year. July has the most, about 14.
What is the hottest month in Hailun?
July is the warmest month in Hailun, with an average high of 27°C.
What is the coldest month in Hailun?
January is the coldest month in Hailun, with an average low of -26°C.
What is the record high temperature in Hailun?
Within the available 1970–2026 station history, the record high at the Hailun station is 38°C, set on June 25, 2001. The record low is -41°C, on January 24, 2018.
What is the sunniest month in Hailun?
December is the sunniest month in Hailun, with estimated sunshine of 65% of daylight hours from ERA5 cloud cover. June is the cloudiest.
When is the first frost in Hailun?
The first fall freeze in Hailun typically comes around October 3. The last spring freeze is around April 30.
What is the best time to visit Hailun?
The most comfortable time to visit is typically May to June and August to September, when daytime highs sit near 23°C.