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Monthly climate in Byeollyang, South Korea

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Byeollyang features a humid subtropical climate (Cwa). Temperatures typically range between 3 °C (37 °F) and 27 °C (81 °F) through the year, but rarely can drop to -10 °C (15 °F) or can rise to as high as 33 °C (92 °F). The average annual precipitation amounts to about 1409 mm (55.5 inches) and receives 87 rainy days on the 1 mm (0.04 inches) threshold annually. Byeollyang enjoys an average of 3179 hours of sunshine throughout the year, and daylight varies from 9 hours 50 minutes to 14 hours 26 minutes per day.

Monthly average temperatures in Byeollyang, South Korea

The warmest months in Byeollyang are July, August and September, with daily mean temperatures ranging from 23 to 27 °C (73 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 5 °C (37 - 41 °F) throughout the day. On average each year, Byeollyang experiences 64 days above 25 °C (77.0 °F) and 33 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Byeollyang. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum15°C
(60°F)		16°C
(61°F)		18°C
(65°F)		20°C
(69°F)		27°C
(81°F)		28°C
(83°F)		33°C
(91°F)		33°C
(92°F)		29°C
(85°F)		27°C
(81°F)		21°C
(70°F)		16°C
(60°F)
Mean maximum12°C
(53°F)		13°C
(55°F)		16°C
(62°F)		19°C
(67°F)		24°C
(76°F)		27°C
(80°F)		30°C
(86°F)		32°C
(90°F)		28°C
(84°F)		26°C
(78°F)		20°C
(68°F)		13°C
(56°F)
Average high6°C
(43°F)		7°C
(46°F)		12°C
(54°F)		16°C
(61°F)		20°C
(69°F)		24°C
(75°F)		27°C
(80°F)		29°C
(84°F)		25°C
(77°F)		21°C
(69°F)		15°C
(59°F)		8°C
(47°F)
Daily mean3°C
(37°F)		4°C
(40°F)		9°C
(49°F)		13°C
(56°F)		18°C
(65°F)		22°C
(71°F)		25°C
(78°F)		27°C
(81°F)		23°C
(73°F)		18°C
(64°F)		12°C
(53°F)		5°C
(41°F)
Average low0°C
(33°F)		1°C
(34°F)		6°C
(43°F)		11°C
(52°F)		16°C
(60°F)		20°C
(68°F)		24°C
(75°F)		26°C
(78°F)		21°C
(70°F)		15°C
(60°F)		9°C
(48°F)		2°C
(36°F)
Mean minimum-6°C
(22°F)		-4°C
(25°F)		2°C
(35°F)		6°C
(42°F)		11°C
(53°F)		17°C
(63°F)		21°C
(70°F)		22°C
(73°F)		17°C
(63°F)		9°C
(49°F)		4°C
(39°F)		-4°C
(24°F)
Minimum-10°C
(15°F)		-7°C
(19°F)		-1°C
(31°F)		4°C
(40°F)		10°C
(51°F)		16°C
(61°F)		20°C
(68°F)		21°C
(70°F)		16°C
(61°F)		6°C
(44°F)		2°C
(35°F)		-7°C
(20°F)

Compare climate in Byeollyang with other places

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

Monthly average precipitation in Byeollyang, South Korea

Byeollyang usually has the most precipitation in June, July and September, with an average of 11 rainy days and 230 mm (9.1 inches) of precipitation per month. The driest months in Byeollyang are January, November and December. On average, 27 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Byeollyang. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)31 (1.2)37 (1.5)87 (3.4)95 (3.8)135 (5.3)179 (7.0)267 (10.5)174 (6.9)246 (9.7)110 (4.3)26 (1.0)23 (0.9)
Average precipitation days (≥ 1 mm)347778141312543

Monthly sunshine hours in Byeollyang, South Korea

The sunniest months in Byeollyang are May, June and August, when the sun shines an average of 9 hours 51 minutes a day. Least sunny months in Byeollyang: January, February and December receive an average of 7 hours 26 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Byeollyang. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours197239273280306300275299256268241239
Mean daily daylight hours10h 5m10h 54m11h 58m13h 3m13h 59m14h 26m14h 12m13h 24m12h 21m11h 16m10h 19m9h 50m

Solar UV radiation in Byeollyang, South Korea

Byeollyang 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 Byeollyang UV Index data.

Average daily maximum UV levels by month for Byeollyang. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)45791011121210753