Suncheon climate

Name: Suncheon
Address: KR

Suncheon is warmest in August, with average highs of 29 °C, and coldest in January, when nights average -2.2 °C. July is the wettest month (315 mm) and December the driest (28 mm). Figures are 1991–2020 climate normals.

Across a full year Suncheon averages 1,520 mm of rain, 106 days above 25 °C and 70 days below freezing.

South Korea · population 276,375 · 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 -2.2 °C
Driest month December 28 mm
Wettest month July 315 mm
Least cloud October 44 % cloud
Hottest on record July 38 °C
Coldest on record January -14 °C

What to expectSuncheon through the year

Suncheon has a clear annual cycle: average daily highs run from 5.7 °C in January to 29 °C in August, a swing of 25 °C in mean temperature across the year.

Counted across a normal year, 106 days a year reach 25 °C, 25 of them reach 30 °C, 70 nights drop below freezing. The warmest reading in the 1991–2020 record is 38 °C, in July.

Rain is strongly seasonal. July averages 315 mm against 28 mm in December — 11 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	5.7 °C	30 mm	53 %
February	8.0 °C	43 mm	53 %
March	12.7 °C	78 mm	55 %
April	18.3 °C	121 mm	57 %
May	23.0 °C	140 mm	61 %
June	26.0 °C	208 mm	74 %
July	28.5 °C	315 mm	77 %
August	29.2 °C	290 mm	68 %
September	25.8 °C	155 mm	61 %
October	20.8 °C	65 mm	44 %
November	14.2 °C	46 mm	45 %
December	7.8 °C	28 mm	46 %

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	5.7 °C	-2.2 °C	1.2 °C	16.5 °C	-14.1 °C	0	0	25
February	8.0 °C	-0.8 °C	3.0 °C	19.2 °C	-10.3 °C	0	0	18
March	12.7 °C	3.1 °C	7.4 °C	22.9 °C	-4.4 °C	0	0	6
April	18.3 °C	8.5 °C	13.0 °C	26.6 °C	-1.2 °C	1	0	0
May	23.0 °C	13.8 °C	18.1 °C	32.5 °C	5.6 °C	8	0	0
June	26.0 °C	18.6 °C	21.9 °C	33.6 °C	11.2 °C	20	1	0
July	28.5 °C	22.8 °C	25.2 °C	37.9 °C	15.3 °C	27	9	0
August	29.2 °C	23.3 °C	25.9 °C	35.4 °C	16.5 °C	29	13	0
September	25.8 °C	18.4 °C	21.8 °C	33.3 °C	10.1 °C	19	1	0
October	20.8 °C	11.8 °C	15.9 °C	27.9 °C	0.9 °C	2	0	0
November	14.2 °C	5.4 °C	9.3 °C	24.9 °C	-4.4 °C	0	0	2
December	7.8 °C	-0.4 °C	3.2 °C	17.5 °C	-9.6 °C	0	0	19

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	30 mm	4	10 h/day	53 %	66 %	16 km/h
February	43 mm	5	11 h/day	53 %	64 %	16 km/h
March	78 mm	7	12 h/day	55 %	68 %	16 km/h
April	121 mm	8	13 h/day	57 %	70 %	15 km/h
May	140 mm	8	14 h/day	61 %	75 %	14 km/h
June	208 mm	11	14 h/day	74 %	82 %	13 km/h
July	315 mm	18	14 h/day	77 %	88 %	13 km/h
August	290 mm	17	13 h/day	68 %	86 %	13 km/h
September	155 mm	10	12 h/day	61 %	81 %	12 km/h
October	65 mm	5	11 h/day	44 %	74 %	13 km/h
November	46 mm	5	10 h/day	45 %	73 %	14 km/h
December	28 mm	4	9.8 h/day	46 %	69 %	15 km/h

How Suncheon 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
Suncheon	29 °C	-2.2 °C	1,520 mm	106
Gwangyang · South Korea	29 °C	-2.5 °C	1,527 mm	95
Yeosu · South Korea	28 °C	-0.2 °C	1,406 mm	67
Gwangju · South Korea	29 °C	-3.0 °C	1,246 mm	107
Chinju · South Korea	29 °C	-3.7 °C	1,432 mm	105
Mokpo · South Korea	28 °C	-0.3 °C	1,244 mm	65
Jeonju · South Korea	29 °C	-3.8 °C	1,214 mm	105

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

QuestionsCommon questions about Suncheon’s climate

When is the best time to visit Suncheon?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, September 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 Suncheon get?

In August, the warmest month, daily highs average 29 °C. About 25 days a year pass 30 °C. The highest value in the 1991–2020 record is 38 °C.

How cold does it get in winter?

Nights average -2.2 °C in January, the coldest month. A normal year has 70 nights below freezing.

Which month is wettest in Suncheon?

July, averaging 315 mm over 18 days with rain. The driest month is December with 28 mm. The year as a whole averages 1,520 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 Suncheon 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
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.