Haeju climate — normals and trends
Haeju (North Korea) has a hot-summer humid continental, dry winter climate (Dwa) under the Köppen-Geiger classification. Its mean annual temperature is 11.0 °C and it receives 1,082 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 August (24.8 °C on average) and the coldest is January (-3.6 °C). Rainfall peaks in July.
Haeju averages 103 frost days, 5 hot days (≥ 30 °C) and 92 rainy days per year.
Haeju has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 113 to 93 per year over the period.
The hottest day of the period reached 34.2 °C (on 13 August 1994) and the coldest -20.3 °C (on 25 January 1941).
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
HaejuSouth Hwanghae
- coords
- 38.04°, 125.71°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.0°C
Average daily high
14.4°C
Average daily low
7.8°C
Annual rainfall
1,082mm
Sunshine / day
8.9h
Mean relative humidity
74%
Average peak wind
17.8km/h
Seasonal range
28.4°C
Frost days (< 0 °C)
103 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
92 d/yr
Annual snowfall
22.6 cm
Average feels-like high
13.2 °C
Average feels-like low
5.8 °C
Average peak gust
35.1 km/h
Tropical nights (≥ 20 °C)
59 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.51 · 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
34.2 °C
13 August 1994
Coldest day
-20.3 °C
25 January 1941
Wettest day
181 mm
12 August 2009
Windiest day
74.1 km/h
27 August 2020
Strongest gust
151.2 km/h
27 August 2020
Hottest feels-like
41.8 °C
1 August 2018
Coldest feels-like
-26.2 °C
8 February 1941
Snowiest day
18.1 cm
8 March 1991
Sunniest day
14.2 h
28 June 1951
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 | 2.1 °C | +2.1 °C | 13 mm | -6 mm |
| Feb | 1.1 °C | -0.9 °C | 9 mm | -12 mm |
| Mar | 9.6 °C | +2.4 °C | 44 mm | +9 mm |
| Apr | 14.1 °C | +0.5 °C | 86 mm | +19 mm |
| May | 18.7 °C | -0.3 °C | 92 mm | +9 mm |
| Jun | 24.5 °C | +1.4 °C | 135 mm | +24 mm |
| Jul | 28.9 °C | +2.9 °C | 94 mm | -184 mm |
| Aug | 29.7 °C | +2.3 °C | 134 mm | -95 mm |
| Sep | 25.9 °C | +2.0 °C | 201 mm | +77 mm |
| Oct | 18.6 °C | +0.8 °C | 164 mm | +117 mm |
| Nov | 12.2 °C | +2.0 °C | 16 mm | -29 mm |
| Dec | 3.8 °C | +0.9 °C | 26 mm | +2 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 Haeju?
Haeju has a hot-summer humid continental, dry winter climate (Köppen Dwa). Over 1940-2025, the average annual temperature is 11.0 °C and it receives 1,082 mm of precipitation per year.
What is the hottest day ever recorded in Haeju?
The hottest day measured in Haeju between 1940 and 2025 was 13 August 1994, reaching 34.2 °C.
What is the coldest day in Haeju?
The coldest day measured in Haeju between 1940 and 2025 was 25 January 1941, at -20.3 °C.
Does it snow in Haeju?
Yes. Haeju gets on average 22.6 cm of snow per year and has around 103 frost days.
Has the climate of Haeju warmed?
Yes: Haeju warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Haeju?
The wettest day measured in Haeju between 1940 and 2025 was 12 August 2009, with 181 mm of rain in 24 hours.
What was the windiest day in Haeju?
The windiest day measured in Haeju between 1940 and 2025 was 27 August 2020, with winds reaching 74.1 km/h.
What is the warmest month in Haeju?
The warmest month in Haeju is August (24.8 °C on average); the coldest is January (-3.6 °C).
How much does it rain in Haeju?
Haeju receives on average 1,082 mm of precipitation per year, spread over about 92 rainy days.
Is it sunny in Haeju?
Haeju gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Haeju?
The heaviest 24-hour snowfall measured in Haeju between 1940 and 2025 was 8 March 1991, with 18.1 cm.
Are there tropical nights in Haeju?
Yes: Haeju has on average 59 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Haeju?
In Haeju, between 1940 and 2025, the highest apparent temperature reached 41.8 °C on 1 August 2018, and the lowest was -26.2 °C on 8 February 1941.
Compare Haeju with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Haeju