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Monthly climate in Yeomsan, South Korea

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Yeomsan features a humid subtropical climate (Cfa). Temperatures typically range between 3 °C (38 °F) and 27 °C (80 °F) through the year, but rarely can drop to -8 °C (17 °F) or can rise to as high as 32 °C (89 °F). The average annual precipitation amounts to about 1302 mm (51.2 inches) and receives 101 rainy days on the 1 mm (0.04 inches) threshold annually. Yeomsan enjoys an average of 3149 hours of sunshine throughout the year, and daylight varies from 9 hours 48 minutes to 14 hours 28 minutes per day.

Monthly average temperatures in Yeomsan, South Korea

The warmest months in Yeomsan are July, August and September, with daily mean temperatures ranging from 23 to 27 °C (73 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 6 °C (38 - 43 °F) throughout the day. On average each year, Yeomsan experiences 49 days above 25 °C (77.0 °F) and 14 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Yeomsan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum13°C
(55°F)		13°C
(55°F)		15°C
(59°F)		21°C
(70°F)		23°C
(73°F)		26°C
(79°F)		31°C
(87°F)		32°C
(89°F)		28°C
(83°F)		26°C
(78°F)		19°C
(67°F)		15°C
(59°F)
Mean maximum9°C
(48°F)		9°C
(49°F)		13°C
(56°F)		18°C
(65°F)		22°C
(71°F)		24°C
(76°F)		29°C
(84°F)		31°C
(87°F)		27°C
(81°F)		23°C
(74°F)		18°C
(65°F)		12°C
(55°F)
Average high5°C
(41°F)		5°C
(41°F)		8°C
(47°F)		13°C
(55°F)		18°C
(64°F)		22°C
(72°F)		26°C
(79°F)		28°C
(83°F)		24°C
(75°F)		19°C
(66°F)		13°C
(57°F)		7°C
(46°F)
Daily mean3°C
(38°F)		3°C
(38°F)		7°C
(44°F)		11°C
(52°F)		16°C
(61°F)		21°C
(69°F)		25°C
(77°F)		27°C
(80°F)		23°C
(73°F)		18°C
(64°F)		12°C
(53°F)		6°C
(43°F)
Average low2°C
(36°F)		2°C
(35°F)		5°C
(42°F)		10°C
(50°F)		15°C
(59°F)		19°C
(67°F)		23°C
(74°F)		26°C
(78°F)		21°C
(71°F)		16°C
(61°F)		10°C
(50°F)		4°C
(40°F)
Mean minimum-3°C
(28°F)		-2°C
(28°F)		2°C
(36°F)		6°C
(44°F)		11°C
(53°F)		16°C
(62°F)		21°C
(70°F)		23°C
(73°F)		19°C
(66°F)		12°C
(53°F)		5°C
(42°F)		-1°C
(30°F)
Minimum-8°C
(17°F)		-4°C
(25°F)		-1°C
(31°F)		5°C
(41°F)		9°C
(49°F)		15°C
(60°F)		20°C
(68°F)		21°C
(70°F)		18°C
(65°F)		10°C
(50°F)		4°C
(39°F)		-4°C
(26°F)

Compare climate in Yeomsan with other places

Compare temperature, precipitation, sunshine, UV index in Yeomsan, South Korea with other places around the world.

Monthly average precipitation in Yeomsan, South Korea

Yeomsan usually has the most precipitation in July, August and September, with an average of 12 rainy days and 220 mm (8.7 inches) of precipitation per month. The driest months in Yeomsan are January, February and November. On average, 40 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Yeomsan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)38 (1.5)38 (1.5)71 (2.8)69 (2.7)104 (4.1)147 (5.8)228 (9.0)192 (7.6)241 (9.5)82 (3.2)45 (1.8)47 (1.9)
Average precipitation days (≥ 1 mm)8776981213115510

Monthly sunshine hours in Yeomsan, South Korea

The sunniest months in Yeomsan are May, June and August, when the sun shines an average of 10 hours 0 minutes a day. Least sunny months in Yeomsan: January, November and December receive an average of 6 hours 37 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Yeomsan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours174230276289305310297305259265227207
Mean daily daylight hours10h 3m10h 53m11h 58m13h 4m14h 0m14h 28m14h 14m13h 25m12h 22m11h 16m10h 18m9h 48m

Solar UV radiation in Yeomsan, South Korea

Yeomsan experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure. January, February and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Yeomsan UV Index data.

Average daily maximum UV levels by month for Yeomsan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)3579911121210753