Hyesan-dong climate — normals and trends
Hyesan-dong (North Korea) has a warm-summer humid continental, dry winter climate (Dwb) under the Köppen-Geiger classification. Its mean annual temperature is 1.8 °C and it receives 832 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 (18.4 °C on average) and the coldest is January (-17.4 °C). Rainfall peaks in July.
Hyesan-dong averages 197 frost days, 0 hot days (≥ 30 °C) and 128 rainy days per year.
Hyesan-dong has warmed by +2.6 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The number of frost days there went from about 207 to 187 per year over the period.
The hottest day of the period reached 32.5 °C (on 3 August 2018) and the coldest -39.3 °C (on 17 January 1985).
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
Hyesan-dongYanggang-do
- coords
- 41.40°, 128.19°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
1.8°C
Average daily high
7.6°C
Average daily low
-3.7°C
Annual rainfall
832mm
Sunshine / day
9.3h
Mean relative humidity
71%
Average peak wind
12.8km/h
Seasonal range
35.8°C
Frost days (< 0 °C)
197 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
128 d/yr
Annual snowfall
122.0 cm
Average feels-like high
4.9 °C
Average feels-like low
-6.6 °C
Average peak gust
33.5 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.62 · 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
32.5 °C
3 August 2018
Coldest day
-39.3 °C
17 January 1985
Wettest day
120 mm
15 August 2022
Windiest day
40.2 km/h
12 April 2023
Strongest gust
100.4 km/h
6 May 2008
Hottest feels-like
36.2 °C
5 August 2016
Coldest feels-like
-44.0 °C
17 January 1985
Snowiest day
34.2 cm
13 April 2025
Sunniest day
15.0 h
28 June 1941
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 | -6.9 °C | +4.0 °C | 27 mm | +13 mm |
| Feb | -7.4 °C | -0.2 °C | 7 mm | -11 mm |
| Mar | 2.9 °C | +3.1 °C | 39 mm | +3 mm |
| Apr | 10.5 °C | +1.9 °C | 123 mm | +62 mm |
| May | 16.3 °C | +0.6 °C | 91 mm | +0 mm |
| Jun | 22.2 °C | +2.5 °C | 117 mm | +7 mm |
| Jul | 26.2 °C | +3.3 °C | 151 mm | -22 mm |
| Aug | 23.5 °C | +0.7 °C | 276 mm | +123 mm |
| Sep | 20.4 °C | +2.8 °C | 64 mm | -6 mm |
| Oct | 10.8 °C | +0.7 °C | 74 mm | +28 mm |
| Nov | 3.3 °C | +3.1 °C | 27 mm | -12 mm |
| Dec | -7.1 °C | +1.6 °C | 26 mm | +5 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 Hyesan-dong?
Hyesan-dong has a warm-summer humid continental, dry winter climate (Köppen Dwb). Over 1940-2025, the average annual temperature is 1.8 °C and it receives 832 mm of precipitation per year.
What is the hottest day ever recorded in Hyesan-dong?
The hottest day measured in Hyesan-dong between 1940 and 2025 was 3 August 2018, reaching 32.5 °C.
What is the coldest day in Hyesan-dong?
The coldest day measured in Hyesan-dong between 1940 and 2025 was 17 January 1985, at -39.3 °C.
Does it snow in Hyesan-dong?
Yes. Hyesan-dong gets on average 122.0 cm of snow per year and has around 197 frost days.
Has the climate of Hyesan-dong warmed?
Yes: Hyesan-dong warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hyesan-dong?
The wettest day measured in Hyesan-dong between 1940 and 2025 was 15 August 2022, with 120 mm of rain in 24 hours.
What was the windiest day in Hyesan-dong?
The windiest day measured in Hyesan-dong between 1940 and 2025 was 12 April 2023, with winds reaching 40.2 km/h.
What is the warmest month in Hyesan-dong?
The warmest month in Hyesan-dong is July (18.4 °C on average); the coldest is January (-17.4 °C).
How much does it rain in Hyesan-dong?
Hyesan-dong receives on average 832 mm of precipitation per year, spread over about 128 rainy days.
Is it sunny in Hyesan-dong?
Hyesan-dong gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
What is the biggest single-day snowfall in Hyesan-dong?
The heaviest 24-hour snowfall measured in Hyesan-dong between 1940 and 2025 was 13 April 2025, with 34.2 cm.
Are there tropical nights in Hyesan-dong?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Hyesan-dong.
What was the most extreme apparent temperature in Hyesan-dong?
In Hyesan-dong, between 1940 and 2025, the highest apparent temperature reached 36.2 °C on 5 August 2016, and the lowest was -44.0 °C on 17 January 1985.
Compare Hyesan-dong with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hyesan-dong