Jeju City climate — normals and trends

Q: What is the climate of Jeju City?

Jeju City has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.3 °C and it receives 1,365 mm of precipitation per year.

Q: What is the hottest day ever recorded in Jeju City?

The hottest day measured in Jeju City between 1940 and 2025 was 10 August 2013, reaching 31.9 °C.

Q: What is the coldest day in Jeju City?

The coldest day measured in Jeju City between 1940 and 2025 was 16 February 1977, at -3.6 °C.

Q: Does it snow in Jeju City?

Yes. Jeju City gets on average 19.1 cm of snow per year and has around 2 frost days.

Q: Has the climate of Jeju City warmed?

Yes: Jeju City warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Jeju City?

The wettest day measured in Jeju City between 1940 and 2025 was 2 September 2020, with 217 mm of rain in 24 hours.

Q: What was the windiest day in Jeju City?

The windiest day measured in Jeju City between 1940 and 2025 was 17 September 1959, with winds reaching 94.6 km/h.

Q: What is the warmest month in Jeju City?

The warmest month in Jeju City is August (26.2 °C on average); the coldest is January (5.7 °C).

Q: How much does it rain in Jeju City?

Jeju City receives on average 1,365 mm of precipitation per year, spread over about 133 rainy days.

Q: Is it sunny in Jeju City?

Jeju City gets on average 8.0 hours of sunshine per day, roughly 2,920 hours per year over 1940-2025.

Jeju City (South Korea) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.3 °C and it receives 1,365 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 (26.2 °C on average) and the coldest is January (5.7 °C). Rainfall peaks in June.

Jeju City averages 2 frost days, 2 hot days (≥ 30 °C) and 133 rainy days per year.

Jeju City has warmed by +1.3 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.

The number of frost days there went from about 3 to 1 per year over the period.

The hottest day of the period reached 31.9 °C (on 10 August 2013) and the coldest -3.6 °C (on 16 February 1977).

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

Jeju CityJeju-do

coords: 33.51°, 126.52°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJuneDriest monthDecember

Mean daily temperature

15.3°C

Average daily high

16.8°C

Average daily low

13.7°C

Annual rainfall

1,365mm

Sunshine / day

8.0h

Mean relative humidity

76%

Average peak wind

23.6km/h

Seasonal range

20.5°C

Frost days (< 0 °C)

2 d/yr

Hot days (≥ 30 °C)

2 d/yr

Rainy days (≥ 1 mm)

133 d/yr

Annual snowfall

19.1 cm

Average feels-like high

16.2 °C

Average feels-like low

11.7 °C

Average peak gust

38.3 km/h

Tropical nights (≥ 20 °C)

95 d/yr

Solar radiation

14.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.3 °C

since 1940

+0.2 °C per decade · r² = 0.41 · 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

31.9 °C

10 August 2013

Coldest day

-3.6 °C

16 February 1977

Wettest day

217 mm

2 September 2020

Windiest day

94.6 km/h

17 September 1959

Strongest gust

169.6 km/h

28 August 2012

Hottest feels-like

40.6 °C

10 August 2013

Coldest feels-like

-13.9 °C

24 January 2016

Snowiest day

14.8 cm

31 December 2010

Sunniest day

13.7 h

19 June 1948

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	31.1 °C23 August 2025	-0.2 °C7 February 2025	16.8 °C	1,132 mm	20	1
2024	31.5 °C21 August 2024	0.4 °C23 January 2024	17.4 °C	1,750 mm	30	0
2023	29.9 °C21 August 2023	-2.6 °C24 January 2023	16.6 °C	1,479 mm	0	2
2022	30.8 °C13 August 2022	0.8 °C17 February 2022	16.1 °C	1,077 mm	10	0
2021	29.4 °C6 August 2021	-1.9 °C8 January 2021	16.7 °C	1,444 mm	0	3
2020	30.2 °C16 August 2020	0.4 °C30 December 2020	15.8 °C	1,432 mm	2	0
2019	29.7 °C31 July 2019	1.6 °C10 February 2019	16.0 °C	1,602 mm	0	0
2018	30.0 °C25 July 2018	-1.1 °C27 January 2018	15.9 °C	1,376 mm	2	9
2017	31.1 °C23 August 2017	0.9 °C11 February 2017	15.9 °C	1,004 mm	10	0
2016	31.0 °C12 August 2016	-3.5 °C24 January 2016	16.3 °C	1,681 mm	14	2
2015	29.9 °C4 August 2015	0.1 °C8 February 2015	15.7 °C	1,567 mm	0	0
2014	30.1 °C24 July 2014	0.7 °C4 February 2014	15.7 °C	1,600 mm	1	0
2013	31.9 °C10 August 2013	-1.6 °C7 February 2013	15.8 °C	1,091 mm	23	4
2012	29.8 °C17 August 2012	-0.5 °C2 February 2012	15.1 °C	1,839 mm	0	3
2011	29.6 °C31 July 2011	-2.1 °C15 January 2011	15.2 °C	1,129 mm	0	4
2010	30.8 °C22 August 2010	-0.7 °C13 January 2010	15.7 °C	1,383 mm	5	1
2009	29.3 °C20 August 2009	-1.2 °C24 January 2009	15.8 °C	1,318 mm	0	2
2008	30.3 °C28 July 2008	1.0 °C17 January 2008	15.7 °C	1,285 mm	3	0
2007	30.3 °C9 August 2007	1.6 °C1 February 2007	16.2 °C	1,214 mm	1	0
2006	30.2 °C2 August 2006	-1.1 °C3 February 2006	15.7 °C	1,471 mm	4	2
2005	29.7 °C13 August 2005	-0.1 °C18 December 2005	15.4 °C	845 mm	0	1
2004	30.6 °C12 August 2004	-1.9 °C21 January 2004	15.9 °C	1,114 mm	2	2
2003	29.1 °C6 August 2003	-0.4 °C29 January 2003	15.4 °C	1,487 mm	0	1
2002	28.8 °C27 August 2002	2.2 °C9 February 2002	15.5 °C	1,706 mm	0	0
2001	30.0 °C28 July 2001	-1.0 °C15 January 2001	15.6 °C	1,359 mm	1	2
2000	29.8 °C23 August 2000	0.3 °C29 February 2000	15.1 °C	1,171 mm	0	0
1999	28.4 °C1 August 1999	0.3 °C3 February 1999	15.5 °C	1,777 mm	0	0
1998	30.1 °C11 August 1998	-0.1 °C24 January 1998	16.2 °C	1,363 mm	1	1
1997	29.3 °C1 September 1997	-0.1 °C22 January 1997	15.6 °C	1,306 mm	0	1
1996	30.1 °C3 August 1996	-0.8 °C2 February 1996	15.1 °C	1,061 mm	2	1
1995	30.1 °C13 August 1995	0.7 °C5 February 1995	15.0 °C	1,208 mm	2	0
1994	30.7 °C8 August 1994	0.5 °C24 January 1994	15.8 °C	1,063 mm	7	0
1993	27.7 °C24 August 1993	0.9 °C27 January 1993	14.7 °C	1,625 mm	0	0
1992	28.9 °C30 July 1992	1.9 °C31 January 1992	15.4 °C	1,139 mm	0	0
1991	28.4 °C25 July 1991	-2.2 °C23 February 1991	15.1 °C	1,673 mm	0	3
1990	30.2 °C4 August 1990	-0.8 °C24 January 1990	15.9 °C	1,510 mm	3	4
1989	29.2 °C12 August 1989	0.3 °C29 January 1989	15.3 °C	1,526 mm	0	0
1988	28.9 °C19 July 1988	0.7 °C23 January 1988	15.0 °C	1,140 mm	0	0
1987	29.1 °C29 August 1987	-0.5 °C13 January 1987	15.2 °C	1,688 mm	0	2
1986	29.2 °C19 August 1986	-1.2 °C4 January 1986	14.5 °C	1,561 mm	0	2
1985	29.2 °C1 August 1985	-1.0 °C29 January 1985	15.0 °C	1,833 mm	0	3
1984	28.7 °C27 July 1984	-1.9 °C4 February 1984	14.6 °C	1,101 mm	0	5
1983	29.8 °C3 August 1983	0.1 °C18 February 1983	15.3 °C	1,660 mm	0	0
1982	28.7 °C6 August 1982	-0.5 °C29 January 1982	15.1 °C	1,426 mm	0	3
1981	29.9 °C2 August 1981	-3.1 °C26 February 1981	14.6 °C	1,303 mm	0	3
1980	28.3 °C30 August 1980	-0.6 °C30 January 1980	14.5 °C	1,846 mm	0	4
1979	28.9 °C31 July 1979	-1.2 °C1 February 1979	15.4 °C	1,408 mm	0	2
1978	29.5 °C16 August 1978	-0.5 °C16 February 1978	15.3 °C	1,284 mm	0	2
1977	29.3 °C6 August 1977	-3.6 °C16 February 1977	15.1 °C	1,759 mm	0	13
1976	29.7 °C12 August 1976	-0.6 °C27 December 1976	14.7 °C	1,341 mm	0	3
1975	29.2 °C19 August 1975	0.1 °C20 February 1975	15.4 °C	1,623 mm	0	0
1974	29.4 °C14 August 1974	-1.4 °C25 February 1974	14.5 °C	1,377 mm	0	4
1973	29.4 °C28 August 1973	-0.7 °C24 December 1973	15.2 °C	1,225 mm	0	1
1972	28.6 °C2 August 1972	1.4 °C29 February 1972	15.5 °C	1,926 mm	0	0
1971	29.5 °C26 July 1971	-1.2 °C4 January 1971	15.1 °C	1,122 mm	0	2
1970	30.0 °C5 August 1970	-2.6 °C5 January 1970	14.5 °C	1,379 mm	1	4
1969	29.6 °C9 August 1969	0.2 °C25 February 1969	14.9 °C	1,356 mm	0	0
1968	28.7 °C20 July 1968	-1.0 °C20 February 1968	15.0 °C	1,381 mm	0	5
1967	30.0 °C15 August 1967	-2.0 °C15 January 1967	15.2 °C	1,122 mm	2	5
1966	31.0 °C5 August 1966	-0.2 °C12 February 1966	15.4 °C	1,176 mm	8	2
1965	29.3 °C19 August 1965	-0.5 °C12 January 1965	14.9 °C	1,466 mm	0	2
1964	29.7 °C4 September 1964	0.3 °C12 February 1964	15.9 °C	1,117 mm	0	0
1963	28.8 °C16 August 1963	-1.9 °C15 January 1963	14.8 °C	1,756 mm	0	7
1962	29.1 °C30 July 1962	0.5 °C27 January 1962	14.9 °C	1,450 mm	0	0
1961	29.7 °C10 August 1961	-1.3 °C1 February 1961	15.9 °C	1,168 mm	0	3
1960	29.9 °C2 August 1960	-0.9 °C24 January 1960	15.7 °C	1,553 mm	0	2
1959	29.5 °C24 August 1959	-2.1 °C16 January 1959	15.8 °C	1,542 mm	0	5
1958	29.8 °C30 July 1958	-1.6 °C16 January 1958	15.5 °C	1,360 mm	0	4
1957	28.0 °C27 August 1957	-1.4 °C11 February 1957	14.4 °C	1,707 mm	0	3
1956	29.2 °C25 July 1956	-0.7 °C9 January 1956	14.3 °C	1,873 mm	0	5
1955	28.8 °C17 August 1955	-1.0 °C16 January 1955	15.2 °C	1,097 mm	0	5
1954	30.1 °C10 August 1954	0.3 °C22 February 1954	15.3 °C	1,527 mm	1	0
1953	30.3 °C16 August 1953	0.2 °C17 January 1953	15.2 °C	1,201 mm	4	0
1952	29.0 °C2 August 1952	-0.8 °C2 February 1952	15.0 °C	1,582 mm	0	4
1951	29.6 °C12 August 1951	-0.1 °C13 January 1951	15.2 °C	1,528 mm	0	1
1950	28.3 °C16 August 1950	0.4 °C12 March 1950	15.3 °C	1,396 mm	0	0
1949	28.1 °C25 August 1949	1.0 °C8 January 1949	15.0 °C	1,756 mm	0	0
1948	28.7 °C6 August 1948	0.3 °C23 February 1948	15.7 °C	952 mm	0	0
1947	30.3 °C13 August 1947	-0.8 °C15 February 1947	14.3 °C	1,190 mm	3	3
1946	29.1 °C14 July 1946	-0.3 °C8 March 1946	15.6 °C	687 mm	0	1
1945	29.0 °C28 August 1945	-1.0 °C18 January 1945	14.7 °C	1,303 mm	0	4
1944	27.8 °C11 August 1944	0.4 °C16 February 1944	14.6 °C	974 mm	0	0
1943	28.0 °C15 August 1943	-2.8 °C12 January 1943	14.3 °C	1,144 mm	0	5
1942	29.0 °C31 July 1942	-1.8 °C12 February 1942	14.6 °C	570 mm	0	8
1941	27.6 °C9 August 1941	-2.0 °C31 January 1941	14.5 °C	838 mm	0	6
1940	27.7 °C20 August 1940	-0.2 °C26 January 1940	14.5 °C	788 mm	0	1

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

18.6 °C

+1.8 °C

Hot days (≥ 30 °C)

20 d/yr

+18

Frost days (< 0 °C)

1 d/yr

-1

Annual rainfall

1132 mm

-233 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	8.2 °C	+0.9 °C	50 mm	-23 mm
Feb	6.8 °C	-1.1 °C	90 mm	+17 mm
Mar	12.2 °C	+1.5 °C	88 mm	+1 mm
Apr	15.8 °C	+1.0 °C	54 mm	-53 mm
May	18.4 °C	+0.1 °C	122 mm	+4 mm
Jun	23.3 °C	+1.7 °C	141 mm	-66 mm
Jul	28.5 °C	+2.6 °C	86 mm	-98 mm
Aug	29.7 °C	+2.2 °C	168 mm	+24 mm
Sep	27.8 °C	+3.6 °C	173 mm	+20 mm
Oct	22.8 °C	+3.3 °C	88 mm	+10 mm
Nov	16.2 °C	+1.5 °C	41 mm	-36 mm
Dec	12.3 °C	+2.5 °C	33 mm	-32 mm

The year's extremes

Hottest day

31.1 °C

23 Aug 2025

Coldest day

-0.2 °C

7 Feb 2025

Wettest day

55.5 mm

9 May 2025

Windiest day

52.9 km/h

3 Mar 2025

Strongest gust

85.7 km/h

3 Mar 2025

Hottest feels-like

38.6 °C

2 Aug 2025

Coldest feels-like

-9.9 °C

7 Feb 2025

Snowiest day

5.5 cm

4 Feb 2025

Sunniest day

13.3 h

6 Jul 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 Jeju City?

Jeju City has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.3 °C and it receives 1,365 mm of precipitation per year.

What is the hottest day ever recorded in Jeju City?

The hottest day measured in Jeju City between 1940 and 2025 was 10 August 2013, reaching 31.9 °C.

What is the coldest day in Jeju City?

The coldest day measured in Jeju City between 1940 and 2025 was 16 February 1977, at -3.6 °C.

Does it snow in Jeju City?

Yes. Jeju City gets on average 19.1 cm of snow per year and has around 2 frost days.

Has the climate of Jeju City warmed?

Yes: Jeju City warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Jeju City?

The wettest day measured in Jeju City between 1940 and 2025 was 2 September 2020, with 217 mm of rain in 24 hours.

What was the windiest day in Jeju City?

The windiest day measured in Jeju City between 1940 and 2025 was 17 September 1959, with winds reaching 94.6 km/h.

What is the warmest month in Jeju City?

The warmest month in Jeju City is August (26.2 °C on average); the coldest is January (5.7 °C).

How much does it rain in Jeju City?

Jeju City receives on average 1,365 mm of precipitation per year, spread over about 133 rainy days.

Is it sunny in Jeju City?

Jeju City gets on average 8.0 hours of sunshine per day, roughly 2,920 hours per year over 1940-2025.

What is the biggest single-day snowfall in Jeju City?

The heaviest 24-hour snowfall measured in Jeju City between 1940 and 2025 was 31 December 2010, with 14.8 cm.

Are there tropical nights in Jeju City?

Yes: Jeju City has on average 95 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Jeju City?

In Jeju City, between 1940 and 2025, the highest apparent temperature reached 40.6 °C on 10 August 2013, and the lowest was -13.9 °C on 24 January 2016.

Compare Jeju City with another city

Pick a second city: its normals will be set against these, indicator by indicator.

Nearby cities

The climate around Jeju City

Other cities — South Korea

All cities in South Korea →