Koch'ang climate — normals and trends

Q: What is the climate of Koch'ang?

Koch'ang has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 13.0 °C and it receives 1,234 mm of precipitation per year.

Q: What is the hottest day ever recorded in Koch'ang?

The hottest day measured in Koch'ang between 1940 and 2025 was 2 August 2018, reaching 36.1 °C.

Q: What is the coldest day in Koch'ang?

The coldest day measured in Koch'ang between 1940 and 2025 was 8 January 2021, at -17.0 °C.

Q: Does it snow in Koch'ang?

Yes. Koch'ang gets on average 25.0 cm of snow per year and has around 82 frost days.

Q: Has the climate of Koch'ang warmed?

Yes: Koch'ang warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Koch'ang?

The wettest day measured in Koch'ang between 1940 and 2025 was 31 August 1958, with 174 mm of rain in 24 hours.

Q: What was the windiest day in Koch'ang?

The windiest day measured in Koch'ang between 1940 and 2025 was 28 August 2012, with winds reaching 60.8 km/h.

Q: What is the warmest month in Koch'ang?

The warmest month in Koch'ang is August (25.9 °C on average); the coldest is January (-0.2 °C).

Q: How much does it rain in Koch'ang?

Koch'ang receives on average 1,234 mm of precipitation per year, spread over about 113 rainy days.

Q: Is it sunny in Koch'ang?

Koch'ang gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.

Koch'ang (South Korea) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.0 °C and it receives 1,234 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 (25.9 °C on average) and the coldest is January (-0.2 °C). Rainfall peaks in July.

Koch'ang averages 82 frost days, 25 hot days (≥ 30 °C) and 113 rainy days per year.

Koch'ang has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.

The number of frost days there went from about 93 to 71 per year over the period.

The hottest day of the period reached 36.1 °C (on 2 August 2018) and the coldest -17.0 °C (on 8 January 2021).

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

Koch'angJeollabuk-do

coords: 35.43°, 126.70°
period: 1940–2025 · 86 yrs

DfaHot-summer humid continentalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthJanuary

Mean daily temperature

13.0°C

Average daily high

17.1°C

Average daily low

9.2°C

Annual rainfall

1,234mm

Sunshine / day

8.6h

Mean relative humidity

75%

Average peak wind

15.8km/h

Seasonal range

26.1°C

Frost days (< 0 °C)

82 d/yr

Hot days (≥ 30 °C)

25 d/yr

Rainy days (≥ 1 mm)

113 d/yr

Annual snowfall

25.0 cm

Average feels-like high

16.7 °C

Average feels-like low

7.8 °C

Average peak gust

36.6 km/h

Tropical nights (≥ 20 °C)

69 d/yr

Solar radiation

15.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.8 °C

since 1940

+0.2 °C per decade · r² = 0.53 · p = < 0.001

19402025

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

36.1 °C

2 August 2018

Coldest day

-17.0 °C

8 January 2021

Wettest day

174 mm

31 August 1958

Windiest day

60.8 km/h

28 August 2012

Strongest gust

151.9 km/h

28 August 2012

Hottest feels-like

43.2 °C

2 August 1996

Coldest feels-like

-21.7 °C

8 January 2021

Snowiest day

12.7 cm

8 January 1998

Sunniest day

13.9 h

29 June 1951

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	35.3 °C11 July 2025	-11.2 °C5 February 2025	14.5 °C	1,411 mm	57	77
2024	35.1 °C19 September 2024	-6.6 °C23 January 2024	15.2 °C	1,264 mm	63	55
2023	34.5 °C8 August 2023	-14.7 °C25 January 2023	14.4 °C	1,559 mm	38	78
2022	34.4 °C29 July 2022	-10.9 °C19 December 2022	13.7 °C	822 mm	33	86
2021	33.6 °C21 July 2021	-17.0 °C8 January 2021	14.4 °C	1,153 mm	36	61
2020	33.7 °C25 August 2020	-10.0 °C31 December 2020	13.8 °C	1,402 mm	27	56
2019	33.4 °C10 August 2019	-7.0 °C27 January 2019	13.8 °C	1,193 mm	23	75
2018	36.1 °C2 August 2018	-11.2 °C27 January 2018	13.7 °C	1,100 mm	47	72
2017	34.5 °C5 August 2017	-7.3 °C17 January 2017	13.6 °C	875 mm	31	86
2016	33.4 °C11 August 2016	-12.5 °C24 January 2016	14.2 °C	1,142 mm	42	71
2015	34.4 °C7 August 2015	-8.5 °C3 January 2015	14.0 °C	981 mm	18	69
2014	34.5 °C31 July 2014	-8.9 °C19 December 2014	13.6 °C	1,042 mm	10	82
2013	34.2 °C7 August 2013	-9.7 °C3 January 2013	13.6 °C	1,062 mm	44	85
2012	35.8 °C1 August 2012	-12.0 °C26 January 2012	13.0 °C	1,469 mm	30	90
2011	34.1 °C19 July 2011	-13.0 °C2 January 2011	13.0 °C	1,199 mm	28	95
2010	33.4 °C9 August 2010	-11.4 °C14 January 2010	13.4 °C	1,107 mm	36	80
2009	32.6 °C19 June 2009	-8.9 °C24 January 2009	13.6 °C	983 mm	13	69
2008	33.1 °C10 August 2008	-8.7 °C6 December 2008	13.7 °C	819 mm	30	78
2007	33.0 °C25 August 2007	-5.2 °C19 January 2007	14.0 °C	1,481 mm	29	62
2006	33.9 °C4 August 2006	-9.7 °C4 February 2006	13.7 °C	1,166 mm	31	75
2005	33.6 °C5 August 2005	-12.6 °C18 December 2005	13.1 °C	953 mm	34	98
2004	34.5 °C11 August 2004	-11.9 °C24 January 2004	14.0 °C	1,054 mm	40	68
2003	31.7 °C22 August 2003	-11.2 °C6 January 2003	13.4 °C	1,549 mm	10	71
2002	34.1 °C27 July 2002	-5.0 °C6 January 2002	13.4 °C	1,285 mm	16	60
2001	33.4 °C2 August 2001	-15.2 °C15 January 2001	13.4 °C	1,072 mm	28	72
2000	32.9 °C29 August 2000	-8.0 °C22 January 2000	13.2 °C	1,347 mm	35	84
1999	33.3 °C11 August 1999	-10.0 °C21 December 1999	13.7 °C	1,594 mm	22	64
1998	32.3 °C7 August 1998	-8.6 °C24 January 1998	14.4 °C	1,645 mm	20	61
1997	33.1 °C23 July 1997	-10.3 °C22 January 1997	13.4 °C	1,180 mm	36	78
1996	34.5 °C2 August 1996	-8.3 °C27 January 1996	12.7 °C	1,259 mm	34	89
1995	33.8 °C14 August 1995	-7.9 °C31 January 1995	13.0 °C	945 mm	26	81
1994	35.7 °C18 July 1994	-8.7 °C24 January 1994	14.2 °C	699 mm	53	82
1993	30.2 °C11 August 1993	-7.4 °C22 January 1993	12.7 °C	1,326 mm	2	83
1992	31.8 °C30 August 1992	-7.4 °C20 January 1992	13.2 °C	1,031 mm	17	69
1991	33.4 °C20 August 1991	-11.5 °C23 February 1991	13.0 °C	1,503 mm	5	75
1990	33.0 °C4 August 1990	-12.7 °C27 January 1990	13.9 °C	1,242 mm	29	56
1989	32.7 °C31 July 1989	-7.3 °C29 January 1989	13.4 °C	1,674 mm	14	55
1988	32.6 °C8 August 1988	-7.4 °C11 February 1988	12.8 °C	852 mm	18	84
1987	30.7 °C28 July 1987	-6.9 °C11 January 1987	12.9 °C	1,455 mm	3	83
1986	32.4 °C2 August 1986	-10.8 °C6 January 1986	12.2 °C	1,505 mm	13	86
1985	33.4 °C28 July 1985	-12.6 °C18 December 1985	12.7 °C	1,782 mm	34	89
1984	33.8 °C9 August 1984	-10.9 °C24 January 1984	12.4 °C	1,173 mm	26	102
1983	32.7 °C3 August 1983	-11.9 °C14 February 1983	13.1 °C	1,422 mm	18	84
1982	32.5 °C10 August 1982	-8.3 °C29 January 1982	12.9 °C	1,136 mm	16	84
1981	33.0 °C26 July 1981	-12.0 °C23 January 1981	12.3 °C	1,360 mm	18	91
1980	30.3 °C20 July 1980	-12.8 °C9 February 1980	11.9 °C	1,745 mm	1	84
1979	32.1 °C31 July 1979	-10.3 °C5 February 1979	13.2 °C	1,274 mm	16	73
1978	34.6 °C28 July 1978	-8.7 °C1 February 1978	13.4 °C	1,080 mm	41	75
1977	33.2 °C28 July 1977	-11.9 °C6 January 1977	13.0 °C	1,093 mm	17	77
1976	32.1 °C22 August 1976	-10.2 °C24 January 1976	12.4 °C	1,249 mm	12	78
1975	33.7 °C30 July 1975	-13.5 °C24 December 1975	13.3 °C	1,332 mm	35	86
1974	33.0 °C19 August 1974	-8.5 °C24 January 1974	12.2 °C	1,693 mm	13	90
1973	33.4 °C17 July 1973	-8.6 °C24 December 1973	13.2 °C	1,036 mm	33	81
1972	33.7 °C20 July 1972	-7.5 °C3 January 1972	13.1 °C	1,737 mm	14	69
1971	32.4 °C27 July 1971	-12.9 °C11 February 1971	12.7 °C	1,487 mm	15	84
1970	32.0 °C14 August 1970	-10.5 °C5 January 1970	12.6 °C	1,201 mm	24	93
1969	32.8 °C9 August 1969	-10.9 °C16 January 1969	12.3 °C	1,447 mm	15	88
1968	30.9 °C25 July 1968	-12.5 °C8 February 1968	12.7 °C	921 mm	9	86
1967	33.3 °C24 August 1967	-14.9 °C16 January 1967	12.8 °C	929 mm	40	93
1966	32.9 °C8 August 1966	-8.6 °C24 January 1966	13.0 °C	983 mm	26	83
1965	32.3 °C19 August 1965	-15.0 °C17 January 1965	12.5 °C	1,243 mm	26	98
1964	33.9 °C18 August 1964	-8.4 °C4 January 1964	13.5 °C	1,155 mm	37	89
1963	32.0 °C9 August 1963	-15.9 °C14 February 1963	12.3 °C	1,820 mm	22	97
1962	33.7 °C31 July 1962	-10.2 °C2 February 1962	12.6 °C	1,381 mm	19	92
1961	33.5 °C18 August 1961	-12.4 °C19 January 1961	13.7 °C	1,314 mm	46	83
1960	35.2 °C21 August 1960	-11.2 °C31 December 1960	13.4 °C	1,370 mm	48	82
1959	35.2 °C4 August 1959	-12.7 °C18 January 1959	13.2 °C	1,349 mm	34	73
1958	32.7 °C30 July 1958	-16.4 °C28 January 1958	13.0 °C	1,804 mm	32	75
1957	32.5 °C18 August 1957	-8.8 °C11 February 1957	12.1 °C	1,597 mm	8	98
1956	34.9 °C31 July 1956	-11.4 °C25 December 1956	11.9 °C	2,211 mm	30	109
1955	32.7 °C18 August 1955	-9.4 °C11 January 1955	13.0 °C	946 mm	40	85
1954	34.4 °C24 August 1954	-9.3 °C29 January 1954	13.0 °C	1,442 mm	23	85
1953	35.1 °C16 August 1953	-11.8 °C19 January 1953	13.1 °C	1,137 mm	40	86
1952	33.3 °C16 August 1952	-8.4 °C3 February 1952	12.7 °C	1,124 mm	23	91
1951	35.4 °C19 August 1951	-11.7 °C13 January 1951	13.0 °C	816 mm	34	76
1950	32.7 °C25 July 1950	-9.3 °C7 January 1950	12.8 °C	1,173 mm	22	90
1949	31.3 °C24 July 1949	-10.2 °C9 January 1949	12.4 °C	1,158 mm	13	76
1948	30.7 °C11 August 1948	-8.3 °C18 January 1948	13.1 °C	1,447 mm	7	62
1947	31.4 °C23 August 1947	-13.2 °C20 December 1947	11.3 °C	1,047 mm	8	102
1946	34.4 °C19 August 1946	-10.5 °C2 January 1946	12.8 °C	732 mm	42	99
1945	30.2 °C3 August 1945	-16.0 °C29 January 1945	11.4 °C	1,082 mm	2	102
1944	32.3 °C6 August 1944	-8.9 °C16 December 1944	12.1 °C	1,008 mm	6	112
1943	30.7 °C15 August 1943	-11.0 °C12 January 1943	12.3 °C	946 mm	4	89
1942	32.1 °C12 August 1942	-11.7 °C17 January 1942	12.2 °C	554 mm	27	96
1941	31.5 °C8 August 1941	-12.3 °C25 January 1941	11.8 °C	777 mm	2	98
1940	31.3 °C31 July 1940	-14.0 °C5 February 1940	11.7 °C	963 mm	1	106

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?

Year

Across the whole year

Average daily high

18.9 °C

+1.8 °C

Hot days (≥ 30 °C)

57 d/yr

+32

Frost days (< 0 °C)

77 d/yr

-5

Annual rainfall

1411 mm

+177 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	5.1 °C	+1.7 °C	30 mm	-4 mm
Feb	4.4 °C	-1.0 °C	28 mm	-9 mm
Mar	13.2 °C	+2.7 °C	46 mm	-10 mm
Apr	18.6 °C	+1.7 °C	60 mm	-24 mm
May	21.6 °C	-0.3 °C	108 mm	+12 mm
Jun	27.1 °C	+1.8 °C	248 mm	+85 mm
Jul	31.7 °C	+3.4 °C	242 mm	-24 mm
Aug	30.9 °C	+1.5 °C	221 mm	+22 mm
Sep	27.5 °C	+2.1 °C	235 mm	+78 mm
Oct	21.9 °C	+2.1 °C	145 mm	+91 mm
Nov	15.0 °C	+1.9 °C	15 mm	-38 mm
Dec	8.2 °C	+1.9 °C	34 mm	-2 mm

The year's extremes

Hottest day

35.3 °C

11 Jul 2025

Coldest day

-11.2 °C

5 Feb 2025

Wettest day

96.2 mm

17 Jul 2025

Windiest day

35.2 km/h

13 Apr 2025

Strongest gust

81.7 km/h

9 May 2025

Hottest feels-like

42.8 °C

8 Jul 2025

Coldest feels-like

-16.1 °C

10 Jan 2025

Snowiest day

4.3 cm

28 Jan 2025

Sunniest day

13.4 h

23 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Koch'ang?

Koch'ang has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 13.0 °C and it receives 1,234 mm of precipitation per year.

What is the hottest day ever recorded in Koch'ang?

The hottest day measured in Koch'ang between 1940 and 2025 was 2 August 2018, reaching 36.1 °C.

What is the coldest day in Koch'ang?

The coldest day measured in Koch'ang between 1940 and 2025 was 8 January 2021, at -17.0 °C.

Does it snow in Koch'ang?

Yes. Koch'ang gets on average 25.0 cm of snow per year and has around 82 frost days.

Has the climate of Koch'ang warmed?

Yes: Koch'ang warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Koch'ang?

The wettest day measured in Koch'ang between 1940 and 2025 was 31 August 1958, with 174 mm of rain in 24 hours.

What was the windiest day in Koch'ang?

The windiest day measured in Koch'ang between 1940 and 2025 was 28 August 2012, with winds reaching 60.8 km/h.

What is the warmest month in Koch'ang?

The warmest month in Koch'ang is August (25.9 °C on average); the coldest is January (-0.2 °C).

How much does it rain in Koch'ang?

Koch'ang receives on average 1,234 mm of precipitation per year, spread over about 113 rainy days.

Is it sunny in Koch'ang?

Koch'ang gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.

What is the biggest single-day snowfall in Koch'ang?

The heaviest 24-hour snowfall measured in Koch'ang between 1940 and 2025 was 8 January 1998, with 12.7 cm.

Are there tropical nights in Koch'ang?

Yes: Koch'ang has on average 69 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Koch'ang?

In Koch'ang, between 1940 and 2025, the highest apparent temperature reached 43.2 °C on 2 August 1996, and the lowest was -21.7 °C on 8 January 2021.

Compare Koch'ang with another city

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