Okcheon climate — normals and trends
Okcheon (South Korea) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.4 °C and it receives 1,106 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 (25.6 °C on average) and the coldest is January (-2.0 °C). Rainfall peaks in July.
Okcheon averages 101 frost days, 33 hot days (≥ 30 °C) and 102 rainy days per year.
Okcheon has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The number of frost days there went from about 114 to 88 per year over the period.
The hottest day of the period reached 38.8 °C (on 1 August 2018) and the coldest -22.7 °C (on 16 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
OkcheonNorth Chungcheong
- coords
- 36.30°, 127.57°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.4°C
Average daily high
17.3°C
Average daily low
8.0°C
Annual rainfall
1,106mm
Sunshine / day
8.7h
Mean relative humidity
70%
Average peak wind
14.1km/h
Seasonal range
27.6°C
Frost days (< 0 °C)
101 d/yr
Hot days (≥ 30 °C)
33 d/yr
Rainy days (≥ 1 mm)
102 d/yr
Annual snowfall
20.9 cm
Average feels-like high
16.2 °C
Average feels-like low
6.6 °C
Average peak gust
34.4 km/h
Tropical nights (≥ 20 °C)
59 d/yr
Solar radiation
14.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °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
38.8 °C
1 August 2018
Coldest day
-22.7 °C
16 January 1967
Wettest day
174 mm
18 July 1964
Windiest day
42.6 km/h
31 August 2002
Strongest gust
124.6 km/h
28 August 1986
Hottest feels-like
43.5 °C
13 August 2018
Coldest feels-like
-27.2 °C
3 February 1969
Snowiest day
13.3 cm
3 February 1957
Sunniest day
14.0 h
20 June 1944
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 | 4.6 °C | +2.2 °C | 17 mm | -10 mm |
| Feb | 4.3 °C | -0.7 °C | 12 mm | -21 mm |
| Mar | 13.6 °C | +2.6 °C | 51 mm | -6 mm |
| Apr | 20.3 °C | +2.2 °C | 55 mm | -26 mm |
| May | 22.8 °C | -0.4 °C | 95 mm | +5 mm |
| Jun | 28.6 °C | +1.9 °C | 312 mm | +176 mm |
| Jul | 32.0 °C | +3.2 °C | 178 mm | -64 mm |
| Aug | 31.5 °C | +1.9 °C | 77 mm | -101 mm |
| Sep | 27.0 °C | +1.7 °C | 229 mm | +95 mm |
| Oct | 20.9 °C | +1.3 °C | 219 mm | +167 mm |
| Nov | 14.5 °C | +2.2 °C | 16 mm | -29 mm |
| Dec | 6.6 °C | +1.6 °C | 32 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 Okcheon?
Okcheon has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.4 °C and it receives 1,106 mm of precipitation per year.
What is the hottest day ever recorded in Okcheon?
The hottest day measured in Okcheon between 1940 and 2025 was 1 August 2018, reaching 38.8 °C.
What is the coldest day in Okcheon?
The coldest day measured in Okcheon between 1940 and 2025 was 16 January 1967, at -22.7 °C.
Does it snow in Okcheon?
Yes. Okcheon gets on average 20.9 cm of snow per year and has around 101 frost days.
Has the climate of Okcheon warmed?
Yes: Okcheon warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Okcheon?
The wettest day measured in Okcheon between 1940 and 2025 was 18 July 1964, with 174 mm of rain in 24 hours.
What was the windiest day in Okcheon?
The windiest day measured in Okcheon between 1940 and 2025 was 31 August 2002, with winds reaching 42.6 km/h.
What is the warmest month in Okcheon?
The warmest month in Okcheon is August (25.6 °C on average); the coldest is January (-2.0 °C).
How much does it rain in Okcheon?
Okcheon receives on average 1,106 mm of precipitation per year, spread over about 102 rainy days.
Is it sunny in Okcheon?
Okcheon gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Okcheon?
The heaviest 24-hour snowfall measured in Okcheon between 1940 and 2025 was 3 February 1957, with 13.3 cm.
Are there tropical nights in Okcheon?
Yes: Okcheon has on average 59 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Okcheon?
In Okcheon, between 1940 and 2025, the highest apparent temperature reached 43.5 °C on 13 August 2018, and the lowest was -27.2 °C on 3 February 1969.
Compare Okcheon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Okcheon