Seogwipo climate

Name: Seogwipo
Address: KR

Seogwipo is warmest in August, with average highs of 29 °C, and coldest in January, when nights average 3.9 °C. August is the wettest month (270 mm) and December the driest (58 mm). Figures are 1991–2020 climate normals.

Across a full year Seogwipo averages 1,719 mm of rain, 97 days above 25 °C and 3 days below freezing.

South Korea · population 178,552 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 29 °C
Coldest month January 3.9 °C
Driest month December 58 mm
Wettest month August 270 mm
Least cloud October 48 % cloud
Hottest on record August 35 °C
Coldest on record January -4.2 °C
Warmest sea August 27 °C

What to expectSeogwipo through the year

Seogwipo has a clear annual cycle: average daily highs run from 7.9 °C in January to 29 °C in August, a swing of 21 °C in mean temperature across the year.

Counted across a normal year, 97 days a year reach 25 °C, 21 of them reach 30 °C, 3 nights drop below freezing. The warmest reading in the 1991–2020 record is 35 °C, in August.

Rain is strongly seasonal. August averages 270 mm against 58 mm in December — 4.7 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Seogwipo is warmest in August at 27 °C and coldest in March at 15 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	7.9 °C	61 mm	74 %
February	9.2 °C	68 mm	69 %
March	12.8 °C	106 mm	63 %
April	17.5 °C	141 mm	62 %
May	21.9 °C	156 mm	64 %
June	24.9 °C	251 mm	76 %
July	28.5 °C	248 mm	73 %
August	29.4 °C	270 mm	64 %
September	25.9 °C	197 mm	59 %
October	21.2 °C	94 mm	48 %
November	15.8 °C	68 mm	56 %
December	10.2 °C	58 mm	66 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	7.9 °C	3.9 °C	5.9 °C	18.8 °C	-4.2 °C	0	0	1
February	9.2 °C	4.5 °C	6.7 °C	19.7 °C	-2.6 °C	0	0	1
March	12.8 °C	7.1 °C	9.7 °C	22.0 °C	-0.2 °C	0	0	0
April	17.5 °C	11.3 °C	14.2 °C	25.3 °C	3.1 °C	0	0	0
May	21.9 °C	15.6 °C	18.5 °C	28.6 °C	8.7 °C	2	0	0
June	24.9 °C	19.8 °C	22.1 °C	30.8 °C	14.4 °C	15	0	0
July	28.5 °C	24.3 °C	26.1 °C	34.1 °C	18.1 °C	28	9	0
August	29.4 °C	25.1 °C	27.0 °C	34.8 °C	18.6 °C	31	12	0
September	25.9 °C	21.7 °C	23.5 °C	31.2 °C	14.9 °C	19	1	0
October	21.2 °C	16.6 °C	18.6 °C	28.3 °C	7.9 °C	2	0	0
November	15.8 °C	11.2 °C	13.4 °C	24.2 °C	2.4 °C	0	0	0
December	10.2 °C	6.1 °C	8.1 °C	19.7 °C	-2.1 °C	0	0	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	61 mm	8	10 h/day	74 %	70 %	21 km/h	16.7 °C
February	68 mm	8	11 h/day	69 %	70 %	21 km/h	15.4 °C
March	106 mm	10	12 h/day	63 %	72 %	20 km/h	15.3 °C
April	141 mm	9	13 h/day	62 %	74 %	18 km/h	16.1 °C
May	156 mm	10	14 h/day	64 %	77 %	16 km/h	17.9 °C
June	251 mm	13	14 h/day	76 %	85 %	16 km/h	21.1 °C
July	248 mm	16	14 h/day	73 %	89 %	17 km/h	24.8 °C
August	270 mm	18	13 h/day	64 %	85 %	17 km/h	27.4 °C
September	197 mm	13	12 h/day	59 %	81 %	18 km/h	26.0 °C
October	94 mm	6	11 h/day	48 %	74 %	18 km/h	23.6 °C
November	68 mm	7	10 h/day	56 %	72 %	19 km/h	21.5 °C
December	58 mm	8	10.0 h/day	66 %	70 %	21 km/h	18.8 °C

How Seogwipo compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Seogwipo	29 °C	3.9 °C	1,719 mm	97
Jeju City · South Korea	29 °C	4.4 °C	1,456 mm	82
Mokpo · South Korea	28 °C	-0.3 °C	1,244 mm	65
Yeosu · South Korea	28 °C	-0.2 °C	1,406 mm	67
Suncheon · South Korea	29 °C	-2.2 °C	1,520 mm	106
Gwangju · South Korea	29 °C	-3.0 °C	1,246 mm	107
Gwangyang · South Korea	29 °C	-2.5 °C	1,527 mm	95

Planning a trip? See the best time to visit Seogwipo.

QuestionsCommon questions about Seogwipo’s climate

When is the best time to visit Seogwipo?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, October sit closest to 20 °C on average, August is the warmest month and December the driest. The month-by-month table above has the full picture.

How hot does Seogwipo get?

In August, the warmest month, daily highs average 29 °C. About 21 days a year pass 30 °C. The highest value in the 1991–2020 record is 35 °C.

How cold does it get in winter?

Nights average 3.9 °C in January, the coldest month. A normal year has 3 nights below freezing.

Which month is wettest in Seogwipo?

August, averaging 270 mm over 18 days with rain. The driest month is December with 58 mm. The year as a whole averages 1,719 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Seogwipo rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 33.253°, 126.562° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.