Hongwŏn climate — normals and trends
Hongwŏn (North Korea) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.6 °C and it receives 924 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 (22.9 °C on average) and the coldest is January (-4.3 °C). Rainfall peaks in August.
Hongwŏn averages 105 frost days, 0 hot days (≥ 30 °C) and 97 rainy days per year.
Hongwŏn has warmed by +2.7 °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 125 to 85 per year over the period.
The hottest day of the period reached 33.7 °C (on 4 August 2018) and the coldest -20.7 °C (on 14 January 1967).
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
HongwŏnSouth Hamgyong
- coords
- 40.03°, 127.96°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.6°C
Average daily high
12.1°C
Average daily low
7.1°C
Annual rainfall
924mm
Sunshine / day
9.1h
Mean relative humidity
75%
Average peak wind
17.8km/h
Seasonal range
27.2°C
Frost days (< 0 °C)
105 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
97 d/yr
Annual snowfall
72.7 cm
Average feels-like high
10.5 °C
Average feels-like low
4.7 °C
Average peak gust
29.9 km/h
Tropical nights (≥ 20 °C)
42 d/yr
Solar radiation
14.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.70 · 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
33.7 °C
4 August 2018
Coldest day
-20.7 °C
14 January 1967
Wettest day
125 mm
8 August 1962
Windiest day
59.8 km/h
10 October 2001
Strongest gust
105.8 km/h
10 October 2001
Hottest feels-like
38.0 °C
4 August 2018
Coldest feels-like
-26.8 °C
14 January 1967
Snowiest day
28.8 cm
23 December 1980
Sunniest day
14.8 h
26 June 1964
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 | 1.8 °C | +2.9 °C | 39 mm | +11 mm |
| Feb | 2.3 °C | +1.9 °C | 7 mm | -19 mm |
| Mar | 6.5 °C | +2.0 °C | 44 mm | +10 mm |
| Apr | 11.4 °C | +0.7 °C | 81 mm | +27 mm |
| May | 16.3 °C | +0.1 °C | 73 mm | +4 mm |
| Jun | 23.0 °C | +3.4 °C | 148 mm | +65 mm |
| Jul | 27.2 °C | +3.9 °C | 126 mm | -65 mm |
| Aug | 27.5 °C | +2.9 °C | 133 mm | -60 mm |
| Sep | 23.5 °C | +2.4 °C | 181 mm | +78 mm |
| Oct | 16.3 °C | +0.4 °C | 157 mm | +102 mm |
| Nov | 10.6 °C | +1.9 °C | 21 mm | -34 mm |
| Dec | 2.8 °C | +1.0 °C | 39 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 Hongwŏn?
Hongwŏn has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.6 °C and it receives 924 mm of precipitation per year.
What is the hottest day ever recorded in Hongwŏn?
The hottest day measured in Hongwŏn between 1940 and 2025 was 4 August 2018, reaching 33.7 °C.
What is the coldest day in Hongwŏn?
The coldest day measured in Hongwŏn between 1940 and 2025 was 14 January 1967, at -20.7 °C.
Does it snow in Hongwŏn?
Yes. Hongwŏn gets on average 72.7 cm of snow per year and has around 105 frost days.
Has the climate of Hongwŏn warmed?
Yes: Hongwŏn warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hongwŏn?
The wettest day measured in Hongwŏn between 1940 and 2025 was 8 August 1962, with 125 mm of rain in 24 hours.
What was the windiest day in Hongwŏn?
The windiest day measured in Hongwŏn between 1940 and 2025 was 10 October 2001, with winds reaching 59.8 km/h.
What is the warmest month in Hongwŏn?
The warmest month in Hongwŏn is August (22.9 °C on average); the coldest is January (-4.3 °C).
How much does it rain in Hongwŏn?
Hongwŏn receives on average 924 mm of precipitation per year, spread over about 97 rainy days.
Is it sunny in Hongwŏn?
Hongwŏn 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 Hongwŏn?
The heaviest 24-hour snowfall measured in Hongwŏn between 1940 and 2025 was 23 December 1980, with 28.8 cm.
Are there tropical nights in Hongwŏn?
Yes: Hongwŏn has on average 42 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hongwŏn?
In Hongwŏn, between 1940 and 2025, the highest apparent temperature reached 38.0 °C on 4 August 2018, and the lowest was -26.8 °C on 14 January 1967.
Compare Hongwŏn with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hongwŏn