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Longjiang, 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 Longjiang, Heilongjiang?
Longjiang, Heilongjiang gets 457 mm of precipitation a year over about 76 rainy days. July is the warmest month (average high 28°C) and January the coldest (average low -23°C).
Humid continental climate
Longjiang, Heilongjiang has warm summers and cold winters. Daytime highs range from about -12°C in January to 28°C in July. July is usually the wettest month. The most comfortable time to visit is typically May and August to September, when daytime highs sit near 23°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | -21° | -9° |
| Spring | Mar–May | 0° | 13° |
| Summer | Jun–Aug | 17° | 27° |
| Autumn | Sep–Nov | 0° | 11° |
How much rain does Longjiang get?
Longjiang gets 457 mm of precipitation in an average year, spread over about 76 days with measurable rain. That is fewer rainy days than 67% of China.
July is the wettest month, with 140 mm. January is the driest, with 3 mm. July has the most rainy days, about 13.
The longest dry spell in the last five years lasted 35 days, to February 17, 2024.
Longjiang weather by month
Longjiang weather in January
In January, Longjiang averages a high of -12°C and a low of -23°C. It gets 3 mm of precipitation over about 3 rainy days. Estimated sunshine is 69% of daylight hours, derived from ERA5 cloud cover. The January record high is 2°C (1974) and the record low is -37°C (2001).
Longjiang weather in February
In February, Longjiang averages a high of -6°C and a low of -19°C. It gets 3 mm of precipitation over about 2 rainy days. Estimated sunshine is 65% of daylight hours, derived from ERA5 cloud cover. The February record high is 11°C (2002) and the record low is -34°C (2010).
Longjiang weather in March
In March, Longjiang averages a high of 3°C and a low of -9°C. It gets 7 mm of precipitation over about 3 rainy days. Estimated sunshine is 61% of daylight hours, derived from ERA5 cloud cover. The March record high is 23°C (1980) and the record low is -27°C (1977).
Longjiang weather in April
In April, Longjiang averages a high of 13°C and a low of 1°C. It gets 19 mm of precipitation over about 5 rainy days. Estimated sunshine is 53% of daylight hours, derived from ERA5 cloud cover. The April record high is 32°C (2014) and the record low is -16°C (2012).
Longjiang weather in May
In May, Longjiang averages a high of 22°C and a low of 9°C. It gets 33 mm of precipitation over about 7 rainy days. Estimated sunshine is 48% of daylight hours, derived from ERA5 cloud cover. The May record high is 36°C (2001) and the record low is -7°C (1972). May is one of the most comfortable months to visit.
Longjiang weather in June
In June, Longjiang averages a high of 27°C and a low of 16°C. It gets 82 mm of precipitation over about 11 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The June record high is 41°C (2001) and the record low is 2°C (1992).
Longjiang weather in July
In July, Longjiang averages a high of 28°C and a low of 19°C. It gets 140 mm of precipitation over about 13 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The July record high is 39°C (2001) and the record low is 10°C (2006).
Longjiang weather in August
In August, Longjiang averages a high of 27°C and a low of 17°C. It gets 95 mm of precipitation over about 11 rainy days. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. The August record high is 36°C (1982) and the record low is 6°C (2017). August is one of the most comfortable months to visit.
Longjiang weather in September
In September, Longjiang averages a high of 21°C and a low of 10°C. It gets 47 mm of precipitation over about 8 rainy days. Estimated sunshine is 52% of daylight hours, derived from ERA5 cloud cover. The September record high is 33°C (2010) and the record low is -3°C (1977). September is one of the most comfortable months to visit.
Longjiang weather in October
In October, Longjiang averages a high of 12°C and a low of 1°C. It gets 19 mm of precipitation over about 4 rainy days. Estimated sunshine is 65% of daylight hours, derived from ERA5 cloud cover. The October record high is 27°C (1986) and the record low is -16°C (1976).
Longjiang weather in November
In November, Longjiang averages a high of -1°C and a low of -11°C. It gets 5 mm of precipitation over about 3 rainy days. Estimated sunshine is 60% of daylight hours, derived from ERA5 cloud cover. The November record high is 14°C (2011) and the record low is -27°C (2002).
Longjiang weather in December
In December, Longjiang averages a high of -11°C and a low of -21°C. It gets 5 mm of precipitation over about 5 rainy days. Estimated sunshine is 73% of daylight hours, derived from ERA5 cloud cover. The December record high is 6°C (2004) and the record low is -35°C (2009).
Sunshine, humidity and wind in Longjiang
December is the sunniest month in Longjiang, with estimated sunshine of 73% of daylight hours from ERA5 cloud cover. July is the cloudiest, at 36%. The annual cloud-cover estimate is 55% of daylight hours; it is not a measurement of sunshine duration. Longjiang is sunnier than 71% of China.
Humidity peaks in August at 76% and is lowest in April at 36%.
Longjiang has about 8 days a year above 32°C. Longjiang is cooler than 77% of China.
First and last freeze in Longjiang
The first fall freeze in Longjiang typically comes around October 7, and the last spring freeze around April 28. That leaves a frost-free growing season of about 162 days.
Longjiang weather records
These records cover QIQIHAR during 1970–2025. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Longjiang station is 41°C, on June 25, 2001. The coldest is -37°C, on January 11, 2001.
The wettest day in the available station history brought 135 mm of precipitation, on August 14, 2010.
48 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 Longjiang
The most comfortable time to visit is typically May and August to September, when daytime highs sit near 23°C.
Winter (December–February) is cold, with average highs around -9°C and lows near -21°C.
Spring (March–May) is chilly, with average highs around 13°C and lows near 0°C.
Summer (June–August) is warm, with average highs around 27°C and lows near 17°C. It can feel humid.
Autumn (September–November) is chilly, with average highs around 11°C and lows near 0°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | -23° | -12° | 2.5 mm | 3 | 57% | 69% | 2° | -37° |
| February | -19° | -6° | 3.0 mm | 2 | 54% | 65% | 11° | -34° |
| March | -9° | 3° | 6.6 mm | 3 | 42% | 61% | 23° | -27° |
| April | 1° | 13° | 19 mm | 5 | 36% | 53% | 32° | -16° |
| May | 9° | 22° | 33 mm | 7 | 39% | 48% | 36° | -7° |
| June | 16° | 27° | 82 mm | 11 | 61% | 40% | 41° | 2° |
| July | 19° | 28° | 140 mm | 13 | 74% | 36% | 39° | 10° |
| August | 17° | 27° | 95 mm | 11 | 76% | 42% | 36° | 6° |
| September | 10° | 21° | 47 mm | 8 | 64% | 52% | 33° | -3° |
| October | 1° | 12° | 19 mm | 4 | 52% | 65% | 27° | -16° |
| November | -11° | -1° | 5.1 mm | 3 | 58% | 60% | 14° | -27° |
| December | -21° | -11° | 5.3 mm | 5 | 56% | 73% | 6° | -35° |
Station: QIQIHAR, 55 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2025; 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.
Longjiang climate questions
How much rain does Longjiang get?
Longjiang gets 457 mm of precipitation in an average year, over about 76 rainy days.
What is the wettest month in Longjiang?
July is the wettest month in Longjiang, with 140 mm. January is the driest, with 3 mm.
How many rainy days does Longjiang have a year?
Longjiang has about 76 days with measurable rain in an average year. July has the most, about 13.
What is the hottest month in Longjiang?
July is the warmest month in Longjiang, with an average high of 28°C.
What is the coldest month in Longjiang?
January is the coldest month in Longjiang, with an average low of -23°C.
What is the record high temperature in Longjiang?
Within the available 1970–2025 station history, the record high at the Longjiang station is 41°C, set on June 25, 2001. The record low is -37°C, on January 11, 2001.
What is the sunniest month in Longjiang?
December is the sunniest month in Longjiang, with estimated sunshine of 73% of daylight hours from ERA5 cloud cover. July is the cloudiest.
When is the first frost in Longjiang?
The first fall freeze in Longjiang typically comes around October 7. The last spring freeze is around April 28.
What is the best time to visit Longjiang?
The most comfortable time to visit is typically May and August to September, when daytime highs sit near 23°C.