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Monthly climate in Daejeon, South Korea

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Daejeon features a humid continental climate (Dwa).Temperatures typically range between -1 °C (31 °F) and 27 °C (80 °F) through the year, but rarely can drop to -19 °C (-2 °F) or can rise to as high as 39 °C (102 °F).The average annual precipitation amounts to about 1108 mm (43.6 inches) and receives 93 rainy days on the 1 mm (0.04 inches) threshold annually.Daejeon enjoys an average of 3094 hours of sunshine throughout the year, and daylight varies from 9 hours 43 minutes to 14 hours 34 minutes per day.

Monthly average temperatures in Daejeon, South Korea §

The warmest months in Daejeon are June, July and August, with daily mean temperatures ranging from 23 to 27 °C (73 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 1 °C (31 - 34 °F) throughout the day. On average each year, Daejeon experiences 101 days above 25 °C (77.0 °F) and 84 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Daejeon, 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 13°C
(57°F)		 21°C
(71°F)		 24°C
(75°F)		 29°C
(85°F)		 31°C
(89°F)		 35°C
(95°F)		 38°C
(100°F)		 39°C
(102°F)		 30°C
(87°F)		 31°C
(88°F)		 21°C
(70°F)		 16°C
(61°F)
Mean maximum 11°C
(52°F)		 15°C
(59°F)		 21°C
(70°F)		 27°C
(82°F)		 30°C
(87°F)		 33°C
(91°F)		 34°C
(93°F)		 36°C
(97°F)		 30°C
(86°F)		 27°C
(82°F)		 21°C
(69°F)		 13°C
(56°F)
Average high 4°C
(40°F)		 6°C
(44°F)		 14°C
(57°F)		 19°C
(66°F)		 24°C
(75°F)		 28°C
(83°F)		 29°C
(85°F)		 31°C
(87°F)		 26°C
(78°F)		 20°C
(69°F)		 14°C
(57°F)		 6°C
(42°F)
Daily mean -1°C
(31°F)		 1°C
(34°F)		 8°C
(46°F)		 13°C
(56°F)		 18°C
(65°F)		 23°C
(73°F)		 26°C
(78°F)		 27°C
(80°F)		 21°C
(70°F)		 15°C
(59°F)		 8°C
(47°F)		 1°C
(34°F)
Average low -5°C
(23°F)		 -3°C
(26°F)		 2°C
(36°F)		 7°C
(45°F)		 13°C
(55°F)		 18°C
(65°F)		 22°C
(72°F)		 23°C
(74°F)		 17°C
(64°F)		 10°C
(50°F)		 3°C
(38°F)		 -3°C
(27°F)
Mean minimum -12°C
(10°F)		 -11°C
(13°F)		 -3°C
(26°F)		 1°C
(33°F)		 7°C
(45°F)		 13°C
(57°F)		 19°C
(66°F)		 19°C
(66°F)		 11°C
(53°F)		 3°C
(37°F)		 -3°C
(27°F)		 -11°C
(13°F)
Minimum -19°C
(-2°F)		 -15°C
(6°F)		 -5°C
(24°F)		 -1°C
(30°F)		 4°C
(39°F)		 11°C
(52°F)		 17°C
(62°F)		 16°C
(61°F)		 9°C
(49°F)		 0°C
(33°F)		 -4°C
(24°F)		 -14°C
(6°F)

Compare climate in Daejeon with other places

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

Monthly average precipitation in Daejeon, South Korea §

Daejeon usually has the most precipitation in July, August and September, with an average of 13 rainy days and 204 mm (8.0 inches) of precipitation per month.The driest months in Daejeon are January, February and December. On average, 28 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Daejeon, 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) 23 (0.9) 35 (1.4) 63 (2.5) 66 (2.6) 82 (3.2) 97 (3.8) 214 (8.4) 221 (8.7) 176 (6.9) 68 (2.7) 36 (1.4) 26 (1.0)
Average precipitation days (≥ 1 mm) 4 4 7 6 9 8 16 16 9 5 5 4

Monthly sunshine hours in Daejeon, South Korea §

The sunniest months in Daejeon are April, May and June, when the sun shines an average of 9 hours 42 minutes a day.Least sunny months in Daejeon: January, November and December receive an average of 7 hours 9 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Daejeon, 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 193 236 275 279 303 300 265 273 243 258 228 236
Mean daily daylight hours 9h 58m 10h 50m 11h 57m 13h 7m 14h 5m 14h 34m 14h 19m 13h 28m 12h 22m 11h 14m 10h 14m 9h 43m

Solar UV radiation in Daejeon, South Korea §

Daejeon 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 Daejeon UV Index data.

Average daily maximum UV levels by month for Daejeon, 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 5 7 9 9 11 11 12 10 7 5 3