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Acheng, 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 Acheng, Heilongjiang?
Acheng, Heilongjiang gets 548 mm of precipitation a year over about 93 rainy days. July is the warmest month (average high 28°C) and January the coldest (average low -23°C).
Humid continental climate
Acheng, 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 September, when daytime highs sit near 22°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | -20° | -9° |
| Spring | Mar–May | 1° | 13° |
| Summer | Jun–Aug | 17° | 27° |
| Autumn | Sep–Nov | 1° | 12° |
How much rain does Acheng get?
Acheng gets 548 mm of precipitation in an average year, spread over about 93 days with measurable rain. That is fewer rainy days than 54% of China.
July is the wettest month, with 139 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 26 days, to February 10, 2022.
From October 2025 to September 2026 Acheng got 510 mm of rain, against a normal of 548 mm for those months. July 2026 had the most, with 274 mm.
Acheng weather by month
Acheng weather in January
In January, Acheng averages a high of -12°C and a low of -23°C. It gets 4 mm of precipitation over about 4 rainy days. Estimated sunshine is 58% of daylight hours, derived from ERA5 cloud cover. The January record high is 4°C (2023) and the record low is -38°C (1970).
Acheng weather in February
In February, Acheng averages a high of -6°C and a low of -18°C. It gets 5 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 10°C (1992) and the record low is -37°C (2001).
Acheng weather in March
In March, Acheng averages a high of 3°C and a low of -8°C. It gets 12 mm of precipitation over about 5 rainy days. Estimated sunshine is 56% of daylight hours, derived from ERA5 cloud cover. The March record high is 22°C (2023) and the record low is -28°C (1970).
Acheng weather in April
In April, Acheng averages a high of 14°C and a low of 2°C. It gets 19 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 32°C (2015) and the record low is -13°C (1972).
Acheng weather in May
In May, Acheng averages a high of 22°C and a low of 9°C. It gets 54 mm of precipitation over about 10 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The May record high is 36°C (2014) and the record low is -4°C (1972). May is one of the most comfortable months to visit.
Acheng weather in June
In June, Acheng averages a high of 27°C and a low of 16°C. It gets 103 mm of precipitation over about 13 rainy days. Estimated sunshine is 34% of daylight hours, derived from ERA5 cloud cover. The June record high is 39°C (2001) and the record low is 4°C (1981).
Acheng weather in July
In July, Acheng averages a high of 28°C and a low of 19°C. It gets 139 mm of precipitation over about 14 rainy days. Estimated sunshine is 37% of daylight hours, derived from ERA5 cloud cover. The July record high is 37°C (2000) and the record low is 9°C (1988).
Acheng weather in August
In August, Acheng averages a high of 27°C and a low of 17°C. It gets 112 mm of precipitation over about 11 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The August record high is 36°C (1982) and the record low is 6°C (2017).
Acheng weather in September
In September, Acheng averages a high of 22°C and a low of 10°C. It gets 53 mm of precipitation over about 9 rainy days. Estimated sunshine is 50% 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.
Acheng weather in October
In October, Acheng averages a high of 13°C and a low of 2°C. It gets 24 mm of precipitation over about 6 rainy days. Estimated sunshine is 63% of daylight hours, derived from ERA5 cloud cover. The October record high is 27°C (2006) and the record low is -16°C (1996).
Acheng weather in November
In November, Acheng averages a high of 0°C and a low of -9°C. It gets 14 mm of precipitation over about 6 rainy days. Estimated sunshine is 48% of daylight hours, derived from ERA5 cloud cover. The November record high is 18°C (2009) and the record low is -27°C (1987).
Acheng weather in December
In December, Acheng averages a high of -10°C and a low of -19°C. It gets 8 mm of precipitation over about 6 rainy days. Estimated sunshine is 64% of daylight hours, derived from ERA5 cloud cover. The December record high is 8°C (1989) and the record low is -36°C (1976).
Sunshine, humidity and wind in Acheng
December is the sunniest month in Acheng, with estimated sunshine of 64% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 34%. The annual cloud-cover estimate is 50% of daylight hours; it is not a measurement of sunshine duration. Acheng is sunnier than 61% of China.
Humidity peaks in August at 84% and is lowest in April at 46%.
Acheng has about 6 days a year above 32°C. Acheng is cooler than 80% of China.
First and last freeze in Acheng
The first fall freeze in Acheng typically comes around October 5, and the last spring freeze around April 24. That leaves a frost-free growing season of about 164 days.
Acheng weather records
These records cover HARBIN during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Acheng station is 39°C, on June 4, 2001. The coldest is -38°C, on January 4, 1970.
The wettest day in the available station history brought 147 mm of precipitation, on August 29, 2012.
42 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.4°C per decade since 1970.
The best time to visit Acheng
The most comfortable time to visit is typically May and September, when daytime highs sit near 22°C.
Winter (December–February) is cold, with average highs around -9°C and lows near -20°C.
Spring (March–May) is chilly, with average highs around 13°C and lows near 1°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 1°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | -23° | -12° | 4.1 mm | 4 | 70% | 58% | 4° | -38° |
| February | -18° | -6° | 4.6 mm | 3 | 65% | 56% | 10° | -37° |
| March | -8° | 3° | 12 mm | 5 | 52% | 56% | 22° | -28° |
| April | 2° | 14° | 19 mm | 6 | 46% | 49% | 32° | -13° |
| May | 9° | 22° | 54 mm | 10 | 53% | 44% | 36° | -4° |
| June | 16° | 27° | 103 mm | 13 | 73% | 34% | 39° | 4° |
| July | 19° | 28° | 139 mm | 14 | 81% | 37% | 37° | 9° |
| August | 17° | 27° | 112 mm | 11 | 84% | 36% | 36° | 6° |
| September | 10° | 22° | 53 mm | 9 | 75% | 50% | 32° | -5° |
| October | 2° | 13° | 24 mm | 6 | 61% | 63% | 27° | -16° |
| November | -9° | 0° | 14 mm | 6 | 71% | 48% | 18° | -27° |
| December | -19° | -10° | 7.6 mm | 6 | 68% | 64% | 8° | -36° |
Station: HARBIN, 27 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.
Acheng climate questions
How much rain does Acheng get?
Acheng gets 548 mm of precipitation in an average year, over about 93 rainy days.
What is the wettest month in Acheng?
July is the wettest month in Acheng, with 139 mm. January is the driest, with 4 mm.
How many rainy days does Acheng have a year?
Acheng has about 93 days with measurable rain in an average year. July has the most, about 14.
What is the hottest month in Acheng?
July is the warmest month in Acheng, with an average high of 28°C.
What is the coldest month in Acheng?
January is the coldest month in Acheng, with an average low of -23°C.
What is the record high temperature in Acheng?
Within the available 1970–2026 station history, the record high at the Acheng station is 39°C, set on June 4, 2001. The record low is -38°C, on January 4, 1970.
What is the sunniest month in Acheng?
December is the sunniest month in Acheng, with estimated sunshine of 64% of daylight hours from ERA5 cloud cover. June is the cloudiest.
When is the first frost in Acheng?
The first fall freeze in Acheng typically comes around October 5. The last spring freeze is around April 24.
What is the best time to visit Acheng?
The most comfortable time to visit is typically May and September, when daytime highs sit near 22°C.