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Monthly climate in Onam, Gyeonggi-do, South Korea

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Onam features a humid continental climate (Dwa).Temperatures typically range between -3 °C (26 °F) and 25 °C (78 °F) through the year, but rarely can drop to -20 °C (-3 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 1208 mm (47.6 inches) and receives 97 rainy days on the 1 mm (0.04 inches) threshold annually.Onam enjoys an average of 3145 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 Onam, Gyeonggi-do, South Korea §

The warmest months in Onam are June, July and August, with daily mean temperatures ranging from 21 to 25 °C (71 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to -1 °C (26 - 30 °F) throughout the day. On average each year, Onam experiences 86 days above 25 °C (77.0 °F) and 103 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Onam, Gyeonggi-do, South Korea.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 12°C
(53°F)		 17°C
(62°F)		 20°C
(68°F)		 27°C
(80°F)		 31°C
(88°F)		 34°C
(94°F)		 35°C
(95°F)		 37°C
(99°F)		 29°C
(85°F)		 27°C
(82°F)		 20°C
(67°F)		 11°C
(52°F)
Mean maximum 9°C
(48°F)		 12°C
(53°F)		 18°C
(65°F)		 25°C
(77°F)		 29°C
(84°F)		 30°C
(87°F)		 33°C
(92°F)		 34°C
(93°F)		 28°C
(83°F)		 25°C
(78°F)		 19°C
(66°F)		 10°C
(50°F)
Average high 2°C
(35°F)		 4°C
(40°F)		 11°C
(53°F)		 17°C
(63°F)		 22°C
(73°F)		 26°C
(80°F)		 29°C
(84°F)		 29°C
(84°F)		 25°C
(77°F)		 19°C
(66°F)		 11°C
(53°F)		 3°C
(38°F)
Daily mean -3°C
(26°F)		 -1°C
(30°F)		 6°C
(43°F)		 11°C
(53°F)		 17°C
(63°F)		 21°C
(71°F)		 25°C
(77°F)		 25°C
(78°F)		 20°C
(69°F)		 13°C
(56°F)		 6°C
(43°F)		 -1°C
(30°F)
Average low -8°C
(19°F)		 -6°C
(22°F)		 1°C
(34°F)		 6°C
(43°F)		 11°C
(53°F)		 17°C
(63°F)		 22°C
(71°F)		 22°C
(72°F)		 16°C
(61°F)		 8°C
(47°F)		 1°C
(34°F)		 -6°C
(22°F)
Mean minimum -16°C
(4°F)		 -14°C
(8°F)		 -5°C
(23°F)		 -1°C
(30°F)		 5°C
(42°F)		 12°C
(55°F)		 18°C
(64°F)		 17°C
(64°F)		 9°C
(49°F)		 -0°C
(32°F)		 -6°C
(22°F)		 -15°C
(6°F)
Minimum -20°C
(-3°F)		 -17°C
(2°F)		 -8°C
(19°F)		 -3°C
(28°F)		 3°C
(38°F)		 12°C
(53°F)		 16°C
(60°F)		 14°C
(58°F)		 7°C
(45°F)		 -2°C
(28°F)		 -8°C
(18°F)		 -16°C
(3°F)

Compare climate in Onam with other places

Compare temperature, precipitation, sunshine, UV index in Onam, Gyeonggi-do, South Korea with other places around the world.

Monthly average precipitation in Onam, Gyeonggi-do, South Korea §

Onam usually has the most precipitation in July, August and September, with an average of 14 rainy days and 227 mm (8.9 inches) of precipitation per month.The driest months in Onam 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 Onam, Gyeonggi-do, South Korea.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 22 (0.9) 24 (0.9) 53 (2.1) 69 (2.7) 124 (4.9) 92 (3.6) 252 (9.9) 287 (11.3) 142 (5.6) 62 (2.5) 58 (2.3) 23 (0.9)
Average precipitation days (≥ 1 mm) 2 4 6 6 10 11 16 18 9 6 5 4

Monthly sunshine hours in Onam, Gyeonggi-do, South Korea §

The sunniest months in Onam are May, June and July, when the sun shines an average of 9 hours 45 minutes a day.Least sunny months in Onam: January, November and December receive an average of 7 hours 10 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Onam, Gyeonggi-do, South Korea.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 197 239 276 281 305 310 282 274 256 257 228 233
Mean daily daylight hours 9h 51m 10h 46m 11h 57m 13h 10m 14h 12m 14h 42m 14h 27m 13h 33m 12h 23m 11h 11m 10h 8m 9h 35m

Solar UV radiation in Onam, Gyeonggi-do, South Korea §

Onam 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 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 Onam UV Index data.

Average daily maximum UV levels by month for Onam, Gyeonggi-do, South Korea.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 4 6 8 9 10 11 11 9 6 4 3