Hailun climate — normals and trends
Hailun (China) has a warm-summer humid continental, dry winter climate (Dwb) under the Köppen-Geiger classification. Its mean annual temperature is 2.0 °C and it receives 700 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (21.9 °C on average) and the coldest is January (-22.2 °C). Rainfall peaks in July.
Hailun averages 188 frost days, 6 hot days (≥ 30 °C) and 92 rainy days per year.
Hailun has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The number of frost days there went from about 193 to 183 per year over the period.
The hottest day of the period reached 36.1 °C (on 25 June 2001) and the coldest -43.9 °C (on 11 January 2001).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
HailunHeilongjiang
- coords
- 47.45°, 126.92°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
2.0°C
Average daily high
7.3°C
Average daily low
-3.4°C
Annual rainfall
700mm
Sunshine / day
9.1h
Mean relative humidity
68%
Average peak wind
15.3km/h
Seasonal range
44.1°C
Frost days (< 0 °C)
188 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
92 d/yr
Annual snowfall
43.0 cm
Average feels-like high
4.5 °C
Average feels-like low
-6.7 °C
Average peak gust
33.2 km/h
Tropical nights (≥ 20 °C)
8 d/yr
Solar radiation
13.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.40 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
36.1 °C
25 June 2001
Coldest day
-43.9 °C
11 January 2001
Wettest day
94 mm
20 July 1961
Windiest day
44.9 km/h
14 April 1956
Strongest gust
96.1 km/h
3 September 2020
Hottest feels-like
39.2 °C
4 August 1989
Coldest feels-like
-49.4 °C
13 January 1953
Snowiest day
17.4 cm
1 April 1950
Sunniest day
15.0 h
30 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -14.8 °C | +1.4 °C | 2 mm | -2 mm |
| Feb | -10.3 °C | +0.2 °C | 5 mm | -2 mm |
| Mar | 0.2 °C | +0.7 °C | 15 mm | +0 mm |
| Apr | 12.7 °C | +1.8 °C | 62 mm | +23 mm |
| May | 19.8 °C | +1.1 °C | 36 mm | -29 mm |
| Jun | 24.7 °C | +0.5 °C | 193 mm | +87 mm |
| Jul | 28.5 °C | +2.3 °C | 147 mm | -20 mm |
| Aug | 24.6 °C | +0.2 °C | 140 mm | -5 mm |
| Sep | 21.9 °C | +3.2 °C | 88 mm | -0 mm |
| Oct | 8.4 °C | -1.2 °C | 10 mm | -30 mm |
| Nov | -0.4 °C | +3.0 °C | 25 mm | +9 mm |
| Dec | -14.0 °C | 0.0 °C | 15 mm | +7 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Hailun?
Hailun has a warm-summer humid continental, dry winter climate (Köppen Dwb). Over 1940-2025, the average annual temperature is 2.0 °C and it receives 700 mm of precipitation per year.
What is the hottest day ever recorded in Hailun?
The hottest day measured in Hailun between 1940 and 2025 was 25 June 2001, reaching 36.1 °C.
What is the coldest day in Hailun?
The coldest day measured in Hailun between 1940 and 2025 was 11 January 2001, at -43.9 °C.
Does it snow in Hailun?
Yes. Hailun gets on average 43.0 cm of snow per year and has around 188 frost days.
Has the climate of Hailun warmed?
Yes: Hailun warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hailun?
The wettest day measured in Hailun between 1940 and 2025 was 20 July 1961, with 94 mm of rain in 24 hours.
What was the windiest day in Hailun?
The windiest day measured in Hailun between 1940 and 2025 was 14 April 1956, with winds reaching 44.9 km/h.
What is the warmest month in Hailun?
The warmest month in Hailun is July (21.9 °C on average); the coldest is January (-22.2 °C).
How much does it rain in Hailun?
Hailun receives on average 700 mm of precipitation per year, spread over about 92 rainy days.
Is it sunny in Hailun?
Hailun gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.
What is the biggest single-day snowfall in Hailun?
The heaviest 24-hour snowfall measured in Hailun between 1940 and 2025 was 1 April 1950, with 17.4 cm.
Are there tropical nights in Hailun?
Yes: Hailun has on average 8 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hailun?
In Hailun, between 1940 and 2025, the highest apparent temperature reached 39.2 °C on 4 August 1989, and the lowest was -49.4 °C on 13 January 1953.
Compare Hailun with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hailun