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Monthly climate in Wonju, South Korea

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Wonju features a humid continental climate (Dwa). Temperatures typically range between -3 °C (28 °F) and 25 °C (77 °F) through the year, but rarely can drop to -24 °C (-11 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 1204 mm (47.4 inches) and receives 101 rainy days on the 1 mm (0.04 inches) threshold annually. Wonju enjoys an average of 3129 hours of sunshine throughout the year, and daylight varies from 9 hours 37 minutes to 14 hours 40 minutes per day.

Monthly average temperatures in Wonju, South Korea

The warmest months in Wonju are June, July and August, with daily mean temperatures ranging from 21 to 25 °C (71 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to 0 °C (28 - 32 °F) throughout the day. On average each year, Wonju experiences 85 days above 25 °C (77.0 °F) and 102 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Wonju. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum12°C
(54°F)		19°C
(66°F)		21°C
(70°F)		27°C
(81°F)		31°C
(88°F)		33°C
(91°F)		35°C
(95°F)		37°C
(99°F)		29°C
(85°F)		28°C
(83°F)		20°C
(68°F)		12°C
(53°F)
Mean maximum9°C
(49°F)		13°C
(55°F)		19°C
(66°F)		25°C
(78°F)		29°C
(84°F)		30°C
(87°F)		32°C
(91°F)		34°C
(93°F)		28°C
(83°F)		26°C
(78°F)		19°C
(66°F)		11°C
(51°F)
Average high2°C
(36°F)		5°C
(41°F)		12°C
(54°F)		17°C
(64°F)		23°C
(73°F)		26°C
(80°F)		28°C
(83°F)		29°C
(84°F)		24°C
(76°F)		19°C
(66°F)		12°C
(53°F)		4°C
(39°F)
Daily mean-3°C
(28°F)		-0°C
(32°F)		6°C
(44°F)		12°C
(53°F)		17°C
(63°F)		21°C
(71°F)		25°C
(77°F)		25°C
(77°F)		20°C
(68°F)		13°C
(56°F)		6°C
(43°F)		-1°C
(30°F)
Average low-7°C
(20°F)		-5°C
(23°F)		1°C
(34°F)		5°C
(42°F)		11°C
(52°F)		16°C
(62°F)		21°C
(70°F)		22°C
(71°F)		15°C
(60°F)		8°C
(47°F)		1°C
(34°F)		-5°C
(23°F)
Mean minimum-15°C
(5°F)		-13°C
(10°F)		-5°C
(24°F)		-1°C
(30°F)		5°C
(41°F)		12°C
(54°F)		17°C
(63°F)		17°C
(62°F)		9°C
(48°F)		0°C
(33°F)		-5°C
(23°F)		-16°C
(4°F)
Minimum-20°C
(-3°F)		-17°C
(2°F)		-6°C
(21°F)		-3°C
(27°F)		2°C
(37°F)		10°C
(50°F)		15°C
(59°F)		13°C
(56°F)		6°C
(44°F)		-1°C
(30°F)		-7°C
(20°F)		-24°C
(-11°F)

Compare climate in Wonju with other places

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

Monthly average precipitation in Wonju, South Korea

Wonju usually has the most precipitation in July, August and September, with an average of 14 rainy days and 218 mm (8.6 inches) of precipitation per month. The driest months in Wonju are January, February and December. On average, 27 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Wonju. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)24 (0.9)32 (1.2)64 (2.5)83 (3.3)110 (4.3)92 (3.6)242 (9.5)258 (10.2)154 (6.1)67 (2.6)52 (2.1)25 (1.0)
Average precipitation days (≥ 1 mm)4477109161710665

Monthly sunshine hours in Wonju, South Korea

The sunniest months in Wonju are April, May and June, when the sun shines an average of 9 hours 49 minutes a day. Least sunny months in Wonju: January, November and December receive an average of 7 hours 16 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Wonju. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours198239273280303309279264250257232238
Mean daily daylight hours9h 53m10h 47m11h 57m13h 9m14h 10m14h 40m14h 25m13h 32m12h 23m11h 12m10h 9m9h 37m

Solar UV radiation in Wonju, South Korea

Wonju 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 4. For more detailed information, check out our hourly Wonju UV Index data.

Average daily maximum UV levels by month for Wonju. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)3469911111210743