Hwasŏng climate — normals and trends
Hwasŏng (North Korea) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.4 °C and it receives 876 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 (21.2 °C on average) and the coldest is January (-10.5 °C). Rainfall peaks in August.
Hwasŏng averages 155 frost days, 4 hot days (≥ 30 °C) and 122 rainy days per year.
Hwasŏng 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 165 to 145 per year over the period.
The hottest day of the period reached 36.0 °C (on 4 August 2018) and the coldest -30.6 °C (on 19 January 1966).
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
HwasŏngNorth Hamgyong
- coords
- 41.26°, 129.49°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.4°C
Average daily high
11.0°C
Average daily low
2.0°C
Annual rainfall
876mm
Sunshine / day
9.1h
Mean relative humidity
75%
Average peak wind
10.0km/h
Seasonal range
31.7°C
Frost days (< 0 °C)
155 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
122 d/yr
Annual snowfall
119.5 cm
Average feels-like high
9.7 °C
Average feels-like low
-0.3 °C
Average peak gust
31.4 km/h
Tropical nights (≥ 20 °C)
12 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.67 · 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
36.0 °C
4 August 2018
Coldest day
-30.6 °C
19 January 1966
Wettest day
181 mm
24 July 1972
Windiest day
32.1 km/h
20 September 1991
Strongest gust
109.8 km/h
3 September 2020
Hottest feels-like
40.6 °C
4 August 2018
Coldest feels-like
-36.0 °C
19 January 1966
Snowiest day
32.2 cm
10 March 1995
Sunniest day
14.9 h
27 June 1945
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -1.9 °C | +3.5 °C | 80 mm | +53 mm |
| Feb | -2.9 °C | +0.1 °C | 28 mm | +2 mm |
| Mar | 4.9 °C | +1.8 °C | 21 mm | -12 mm |
| Apr | 12.3 °C | +0.6 °C | 101 mm | +54 mm |
| May | 18.9 °C | +0.9 °C | 52 mm | -15 mm |
| Jun | 25.0 °C | +3.9 °C | 153 mm | +67 mm |
| Jul | 28.2 °C | +4.0 °C | 192 mm | +44 mm |
| Aug | 27.0 °C | +2.2 °C | 178 mm | -14 mm |
| Sep | 23.3 °C | +2.8 °C | 76 mm | -26 mm |
| Oct | 13.8 °C | -0.6 °C | 80 mm | +23 mm |
| Nov | 7.9 °C | +2.5 °C | 18 mm | -32 mm |
| Dec | -1.1 °C | +1.2 °C | 47 mm | +4 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 Hwasŏng?
Hwasŏng has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.4 °C and it receives 876 mm of precipitation per year.
What is the hottest day ever recorded in Hwasŏng?
The hottest day measured in Hwasŏng between 1940 and 2025 was 4 August 2018, reaching 36.0 °C.
What is the coldest day in Hwasŏng?
The coldest day measured in Hwasŏng between 1940 and 2025 was 19 January 1966, at -30.6 °C.
Does it snow in Hwasŏng?
Yes. Hwasŏng gets on average 119.5 cm of snow per year and has around 155 frost days.
Has the climate of Hwasŏng warmed?
Yes: Hwasŏng warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hwasŏng?
The wettest day measured in Hwasŏng between 1940 and 2025 was 24 July 1972, with 181 mm of rain in 24 hours.
What was the windiest day in Hwasŏng?
The windiest day measured in Hwasŏng between 1940 and 2025 was 20 September 1991, with winds reaching 32.1 km/h.
What is the warmest month in Hwasŏng?
The warmest month in Hwasŏng is August (21.2 °C on average); the coldest is January (-10.5 °C).
How much does it rain in Hwasŏng?
Hwasŏng receives on average 876 mm of precipitation per year, spread over about 122 rainy days.
Is it sunny in Hwasŏng?
Hwasŏng 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 Hwasŏng?
The heaviest 24-hour snowfall measured in Hwasŏng between 1940 and 2025 was 10 March 1995, with 32.2 cm.
Are there tropical nights in Hwasŏng?
Yes: Hwasŏng has on average 12 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hwasŏng?
In Hwasŏng, between 1940 and 2025, the highest apparent temperature reached 40.6 °C on 4 August 2018, and the lowest was -36.0 °C on 19 January 1966.
Compare Hwasŏng with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hwasŏng