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Monthly climate in Wonsan, North Korea

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Wonsan features a humid continental climate (Dwa). Temperatures typically range between -2 °C (29 °F) and 25 °C (77 °F) through the year, but rarely can drop to -18 °C (0 °F) or can rise to as high as 34 °C (94 °F). The average annual precipitation amounts to about 1432 mm (56.4 inches) and receives 99 rainy days on the 1 mm (0.04 inches) threshold annually. Wonsan enjoys an average of 3188 hours of sunshine throughout the year, and daylight varies from 9 hours 27 minutes to 14 hours 51 minutes per day.

Monthly average temperatures in Wonsan, North Korea

The warmest months in Wonsan are July, August and September, with daily mean temperatures ranging from 20 to 25 °C (69 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to 0 °C (29 - 33 °F) throughout the day. On average each year, Wonsan experiences 46 days above 25 °C (77.0 °F) and 72 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Wonsan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum9°C
(48°F)		11°C
(53°F)		17°C
(62°F)		25°C
(77°F)		28°C
(82°F)		31°C
(88°F)		34°C
(93°F)		34°C
(94°F)		29°C
(85°F)		24°C
(75°F)		20°C
(69°F)		10°C
(51°F)
Mean maximum6°C
(44°F)		9°C
(48°F)		15°C
(59°F)		22°C
(71°F)		25°C
(78°F)		28°C
(82°F)		31°C
(88°F)		32°C
(89°F)		27°C
(81°F)		23°C
(73°F)		18°C
(65°F)		9°C
(48°F)
Average high1°C
(35°F)		3°C
(38°F)		8°C
(47°F)		14°C
(58°F)		19°C
(67°F)		23°C
(73°F)		26°C
(79°F)		27°C
(80°F)		23°C
(73°F)		17°C
(63°F)		11°C
(52°F)		3°C
(38°F)
Daily mean-2°C
(29°F)		-0°C
(32°F)		5°C
(42°F)		11°C
(51°F)		16°C
(61°F)		20°C
(68°F)		24°C
(76°F)		25°C
(77°F)		20°C
(69°F)		14°C
(58°F)		8°C
(46°F)		0°C
(33°F)
Average low-5°C
(24°F)		-3°C
(26°F)		2°C
(36°F)		7°C
(45°F)		12°C
(55°F)		17°C
(64°F)		22°C
(72°F)		23°C
(73°F)		18°C
(65°F)		12°C
(54°F)		5°C
(41°F)		-2°C
(28°F)
Mean minimum-12°C
(10°F)		-10°C
(14°F)		-3°C
(27°F)		2°C
(36°F)		8°C
(47°F)		14°C
(57°F)		19°C
(66°F)		19°C
(67°F)		14°C
(58°F)		5°C
(41°F)		-2°C
(29°F)		-11°C
(12°F)
Minimum-18°C
(0°F)		-13°C
(9°F)		-7°C
(20°F)		2°C
(35°F)		7°C
(44°F)		13°C
(56°F)		17°C
(62°F)		17°C
(63°F)		12°C
(55°F)		3°C
(37°F)		-4°C
(25°F)		-16°C
(4°F)

Compare climate in Wonsan with other places

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

Monthly average precipitation in Wonsan, North Korea

Wonsan usually has the most precipitation in July, August and September, with an average of 14 rainy days and 274 mm (10.8 inches) of precipitation per month. The driest months in Wonsan are January, February and December. On average, 24 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Wonsan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)23 (0.9)29 (1.1)60 (2.3)66 (2.6)123 (4.8)105 (4.1)246 (9.7)375 (14.7)200 (7.9)113 (4.4)72 (2.8)21 (0.8)
Average precipitation days (≥ 1 mm)3466810141811973

Monthly sunshine hours in Wonsan, North Korea

The sunniest months in Wonsan are May, June and July, when the sun shines an average of 9 hours 58 minutes a day. Least sunny months in Wonsan: 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 Wonsan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours196239277290308312297275269248233238
Mean daily daylight hours9h 44m10h 42m11h 57m13h 13m14h 18m14h 51m14h 35m13h 38m12h 24m11h 8m10h 1m9h 27m

Solar UV radiation in Wonsan, North Korea

Wonsan experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure. January, February and December are in the Low / 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 Wonsan UV Index data.

Average daily maximum UV levels by month for Wonsan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)346891010118642