Hongch’ŏn climate — normals and trends
Hongch’ŏn (South Korea) has a hot-summer humid continental, dry winter climate (Dwa) under the Köppen-Geiger classification. Its mean annual temperature is 10.2 °C and it receives 1,221 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 (23.7 °C on average) and the coldest is January (-5.6 °C). Rainfall peaks in July.
Hongch’ŏn averages 122 frost days, 13 hot days (≥ 30 °C) and 109 rainy days per year.
Hongch’ŏn has warmed by +2.5 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 135 to 109 per year over the period.
The hottest day of the period reached 37.2 °C (on 1 August 2018) and the coldest -30.3 °C (on 1 February 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
Hongch’ŏnGangwon-do
- coords
- 37.69°, 127.89°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.2°C
Average daily high
15.0°C
Average daily low
5.5°C
Annual rainfall
1,221mm
Sunshine / day
8.5h
Mean relative humidity
70%
Average peak wind
13.0km/h
Seasonal range
29.3°C
Frost days (< 0 °C)
122 d/yr
Hot days (≥ 30 °C)
13 d/yr
Rainy days (≥ 1 mm)
109 d/yr
Annual snowfall
45.5 cm
Average feels-like high
13.7 °C
Average feels-like low
3.6 °C
Average peak gust
34.7 km/h
Tropical nights (≥ 20 °C)
38 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.56 · 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
37.2 °C
1 August 2018
Coldest day
-30.3 °C
1 February 1941
Wettest day
202 mm
7 August 2002
Windiest day
40.7 km/h
4 May 2016
Strongest gust
115.9 km/h
7 May 1946
Hottest feels-like
42.9 °C
1 August 2018
Coldest feels-like
-35.4 °C
1 February 1941
Snowiest day
21.2 cm
28 February 1956
Sunniest day
14.5 h
23 June 1948
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 | +2.2 °C | 20 mm | -5 mm |
| Feb | 2.1 °C | -0.4 °C | 5 mm | -26 mm |
| Mar | 11.1 °C | +2.4 °C | 54 mm | +1 mm |
| Apr | 17.5 °C | +1.5 °C | 92 mm | +5 mm |
| May | 20.4 °C | -0.7 °C | 103 mm | +10 mm |
| Jun | 26.2 °C | +1.6 °C | 140 mm | +5 mm |
| Jul | 29.8 °C | +2.9 °C | 198 mm | -110 mm |
| Aug | 29.4 °C | +1.8 °C | 251 mm | +34 mm |
| Sep | 25.2 °C | +1.8 °C | 284 mm | +144 mm |
| Oct | 18.5 °C | +1.0 °C | 144 mm | +93 mm |
| Nov | 12.0 °C | +2.3 °C | 20 mm | -27 mm |
| Dec | 3.7 °C | +1.5 °C | 49 mm | +17 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 Hongch’ŏn?
Hongch’ŏn has a hot-summer humid continental, dry winter climate (Köppen Dwa). Over 1940-2025, the average annual temperature is 10.2 °C and it receives 1,221 mm of precipitation per year.
What is the hottest day ever recorded in Hongch’ŏn?
The hottest day measured in Hongch’ŏn between 1940 and 2025 was 1 August 2018, reaching 37.2 °C.
What is the coldest day in Hongch’ŏn?
The coldest day measured in Hongch’ŏn between 1940 and 2025 was 1 February 1941, at -30.3 °C.
Does it snow in Hongch’ŏn?
Yes. Hongch’ŏn gets on average 45.5 cm of snow per year and has around 122 frost days.
Has the climate of Hongch’ŏn warmed?
Yes: Hongch’ŏn warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hongch’ŏn?
The wettest day measured in Hongch’ŏn between 1940 and 2025 was 7 August 2002, with 202 mm of rain in 24 hours.
What was the windiest day in Hongch’ŏn?
The windiest day measured in Hongch’ŏn between 1940 and 2025 was 4 May 2016, with winds reaching 40.7 km/h.
What is the warmest month in Hongch’ŏn?
The warmest month in Hongch’ŏn is August (23.7 °C on average); the coldest is January (-5.6 °C).
How much does it rain in Hongch’ŏn?
Hongch’ŏn receives on average 1,221 mm of precipitation per year, spread over about 109 rainy days.
Is it sunny in Hongch’ŏn?
Hongch’ŏn gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Hongch’ŏn?
The heaviest 24-hour snowfall measured in Hongch’ŏn between 1940 and 2025 was 28 February 1956, with 21.2 cm.
Are there tropical nights in Hongch’ŏn?
Yes: Hongch’ŏn has on average 38 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hongch’ŏn?
In Hongch’ŏn, between 1940 and 2025, the highest apparent temperature reached 42.9 °C on 1 August 2018, and the lowest was -35.4 °C on 1 February 1941.
Compare Hongch’ŏn with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hongch’ŏn