nomadseason

Monthly climate in Hyesan, North Korea

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Hyesan features a subarctic climate (Dwc). Temperatures typically range between -16 °C (4 °F) and 20 °C (68 °F) through the year, but rarely can drop to -36 °C (-33 °F) or can rise to as high as 32 °C (91 °F). The average annual precipitation amounts to about 834 mm (32.8 inches) and receives 117 rainy days on the 1 mm (0.04 inches) threshold annually. Hyesan enjoys an average of 3296 hours of sunshine throughout the year, and daylight varies from 9 hours 13 minutes to 15 hours 6 minutes per day.

Monthly average temperatures in Hyesan, North Korea

The warmest months in Hyesan are June, July and August, with daily mean temperatures ranging from 15 to 20 °C (59 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -16 to -13 °C (4 - 9 °F) throughout the day. On average each year, Hyesan experiences 26 days above 25 °C (77.0 °F) and 177 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hyesan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum2°C
(36°F)		8°C
(46°F)		18°C
(65°F)		26°C
(79°F)		29°C
(85°F)		28°C
(83°F)		32°C
(90°F)		32°C
(91°F)		26°C
(78°F)		24°C
(75°F)		13°C
(56°F)		4°C
(39°F)
Mean maximum-1°C
(31°F)		2°C
(37°F)		13°C
(55°F)		21°C
(70°F)		27°C
(80°F)		25°C
(77°F)		30°C
(86°F)		29°C
(84°F)		24°C
(76°F)		20°C
(69°F)		12°C
(53°F)		2°C
(35°F)
Average high-9°C
(16°F)		-6°C
(21°F)		3°C
(38°F)		10°C
(51°F)		16°C
(62°F)		21°C
(69°F)		25°C
(77°F)		23°C
(74°F)		19°C
(67°F)		11°C
(53°F)		2°C
(35°F)		-8°C
(18°F)
Daily mean-16°C
(4°F)		-13°C
(9°F)		-3°C
(27°F)		4°C
(40°F)		10°C
(51°F)		15°C
(59°F)		20°C
(68°F)		19°C
(66°F)		13°C
(55°F)		5°C
(41°F)		-4°C
(25°F)		-14°C
(7°F)
Average low-22°C
(-7°F)		-20°C
(-4°F)		-9°C
(16°F)		-2°C
(29°F)		4°C
(40°F)		10°C
(50°F)		15°C
(59°F)		15°C
(59°F)		8°C
(46°F)		-1°C
(31°F)		-9°C
(17°F)		-19°C
(-3°F)
Mean minimum-29°C
(-21°F)		-30°C
(-21°F)		-19°C
(-2°F)		-10°C
(15°F)		-2°C
(29°F)		4°C
(40°F)		9°C
(49°F)		8°C
(47°F)		1°C
(34°F)		-8°C
(18°F)		-21°C
(-5°F)		-29°C
(-20°F)
Minimum-36°C
(-33°F)		-35°C
(-31°F)		-21°C
(-5°F)		-16°C
(3°F)		-3°C
(27°F)		2°C
(35°F)		7°C
(46°F)		1°C
(34°F)		-2°C
(28°F)		-10°C
(14°F)		-26°C
(-14°F)		-32°C
(-25°F)

Compare climate in Hyesan with other places

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

Monthly average precipitation in Hyesan, North Korea

Hyesan usually has the most precipitation in May, June and August, with an average of 16 rainy days and 132 mm (5.2 inches) of precipitation per month. The driest months in Hyesan are January, February and December. On average, 23 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hyesan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)14 (0.6)29 (1.2)42 (1.6)52 (2.1)109 (4.3)100 (3.9)97 (3.8)187 (7.4)79 (3.1)56 (2.2)44 (1.7)24 (0.9)
Average precipitation days (≥ 1 mm)3589151614188876

Monthly sunshine hours in Hyesan, North Korea

The sunniest months in Hyesan are May, June and July, when the sun shines an average of 10 hours 28 minutes a day. Least sunny months in Hyesan: 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 Hyesan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours200239290296305323334290280265235234
Mean daily daylight hours9h 32m10h 35m11h 56m13h 19m14h 30m15h 6m14h 48m13h 46m12h 26m11h 3m9h 51m9h 13m

Solar UV radiation in Hyesan, North Korea

Hyesan experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 11, which corresponds to the Extreme category of sun exposure. January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Hyesan UV Index data.

Average daily maximum UV levels by month for Hyesan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)347991111118632