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Monthly climate in Hongch'on, South Korea

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Hongch'on features a humid continental climate (Dwa). Temperatures typically range between -3 °C (27 °F) and 24 °C (76 °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 1136 mm (44.7 inches) and receives 95 rainy days on the 1 mm (0.04 inches) threshold annually. Hongch'on enjoys an average of 3126 hours of sunshine throughout the year, and daylight varies from 9 hours 35 minutes to 14 hours 42 minutes per day.

Monthly average temperatures in Hongch'on, South Korea

The warmest months in Hongch'on are June, July and August, with daily mean temperatures ranging from 21 to 24 °C (70 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to -1 °C (27 - 31 °F) throughout the day. On average each year, Hongch'on experiences 74 days above 25 °C (77.0 °F) and 101 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hongch'on. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum13°C
(55°F)		17°C
(63°F)		20°C
(68°F)		26°C
(79°F)		30°C
(87°F)		32°C
(90°F)		35°C
(95°F)		37°C
(99°F)		29°C
(84°F)		27°C
(81°F)		20°C
(69°F)		12°C
(53°F)
Mean maximum9°C
(48°F)		12°C
(54°F)		18°C
(65°F)		25°C
(77°F)		28°C
(82°F)		29°C
(85°F)		33°C
(91°F)		33°C
(92°F)		28°C
(82°F)		25°C
(77°F)		19°C
(66°F)		10°C
(50°F)
Average high2°C
(36°F)		4°C
(40°F)		11°C
(53°F)		17°C
(62°F)		22°C
(72°F)		26°C
(78°F)		28°C
(83°F)		28°C
(83°F)		24°C
(75°F)		18°C
(65°F)		11°C
(52°F)		3°C
(38°F)
Daily mean-3°C
(27°F)		-1°C
(31°F)		6°C
(43°F)		11°C
(52°F)		16°C
(62°F)		21°C
(70°F)		24°C
(76°F)		24°C
(76°F)		19°C
(67°F)		13°C
(56°F)		6°C
(43°F)		-1°C
(30°F)
Average low-7°C
(19°F)		-6°C
(22°F)		1°C
(33°F)		5°C
(41°F)		11°C
(52°F)		16°C
(61°F)		21°C
(70°F)		21°C
(71°F)		15°C
(60°F)		8°C
(47°F)		1°C
(35°F)		-6°C
(22°F)
Mean minimum-17°C
(2°F)		-13°C
(8°F)		-6°C
(21°F)		-1°C
(30°F)		5°C
(41°F)		12°C
(54°F)		17°C
(62°F)		16°C
(62°F)		9°C
(49°F)		0°C
(33°F)		-5°C
(23°F)		-17°C
(2°F)
Minimum-20°C
(-4°F)		-18°C
(-0°F)		-10°C
(14°F)		-3°C
(27°F)		3°C
(37°F)		10°C
(50°F)		14°C
(58°F)		14°C
(57°F)		7°C
(45°F)		-1°C
(30°F)		-7°C
(19°F)		-24°C
(-11°F)

Compare climate in Hongch'on with other places

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

Monthly average precipitation in Hongch'on, South Korea

Hongch'on usually has the most precipitation in July, August and September, with an average of 13 rainy days and 211 mm (8.3 inches) of precipitation per month. The driest months in Hongch'on are January, February and December. On average, 25 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hongch'on. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)25 (1.0)27 (1.1)63 (2.5)71 (2.8)109 (4.3)78 (3.1)237 (9.3)255 (10.0)140 (5.5)57 (2.3)50 (2.0)23 (0.9)
Average precipitation days (≥ 1 mm)34789915168655

Monthly sunshine hours in Hongch'on, South Korea

The sunniest months in Hongch'on are May, June and July, when the sun shines an average of 9 hours 44 minutes a day. Least sunny months in Hongch'on: January, November and December receive an average of 7 hours 15 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hongch'on. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours198239273280302312281262252253231238
Mean daily daylight hours9h 51m10h 46m11h 57m13h 10m14h 11m14h 42m14h 27m13h 33m12h 23m11h 11m10h 8m9h 35m

Solar UV radiation in Hongch'on, South Korea

Hongch'on 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 Hongch'on UV Index data.

Average daily maximum UV levels by month for Hongch'on. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)346991111129743