Climate Insights for Daejeon

Seo-gu, South Korea

Hottest
August
31°C peak88°F peak
Coldest
January
-5°C low23°F low
Wettest
July
242 mm rain9.5 in rain
Best to Visit
May
Mild temps & low rain

Climate Overview

The climate in Daejeon is temperate. The average annual temperature is 14°C and approximately 1,141 mm of precipitation falls per year. July is the wettest month, receiving around 242 mm of rainfall. Daejeon is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, December, February, when temperatures can drop to -5°C. Light snow can occur between January and December.The climate in Daejeon is temperate. The average annual temperature is 57°F and approximately 44.9 in of precipitation falls per year. July is the wettest month, receiving around 9.5 in of rainfall. Daejeon is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, December, February, when temperatures can drop to 23°F. Light snow can occur between January and December.

Temperature

-10°0°10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 4°Average: -1°Min: -5°FebMax: 7°Average: 2°Min: -3°MarMax: 14°Average: 8°Min: 3°AprMax: 20°Average: 14°Min: 8°MayMax: 24°Average: 19°Min: 13°JunMax: 28°Average: 23°Min: 19°JulMax: 30°Average: 26°Min: 23°AugMax: 31°Average: 27°Min: 23°SepMax: 26°Average: 22°Min: 18°OctMax: 20°Average: 15°Min: 11°NovMax: 14°Average: 8°Min: 3°DecMax: 5°Average: 1°Min: -3°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°F90°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 39°FAverage: 31°FMin: 23°FFebMax: 44°FAverage: 35°FMin: 27°FMarMax: 57°FAverage: 46°FMin: 37°FAprMax: 67°FAverage: 57°FMin: 47°FMayMax: 75°FAverage: 65°FMin: 56°FJunMax: 83°FAverage: 74°FMin: 66°FJulMax: 86°FAverage: 79°FMin: 73°FAugMax: 88°FAverage: 80°FMin: 74°FSepMax: 80°FAverage: 72°FMin: 65°FOctMax: 68°FAverage: 59°FMin: 51°FNovMax: 56°FAverage: 46°FMin: 38°FDecMax: 42°FAverage: 34°FMin: 26°F
Max
Average
Min

Daejeon has a wide annual temperature range, spanning 36°C from the coldest to warmest months. The warmest month is August, when average highs reach 31°C and the mean temperature sits around 27°C. The coldest month is January, when overnight lows fall to -5°C and the daily average is -1°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.Daejeon has a wide annual temperature range, spanning 65°F from the coldest to warmest months. The warmest month is August, when average highs reach 88°F and the mean temperature sits around 80°F. The coldest month is January, when overnight lows fall to 23°F and the daily average is 31°F. On average, daily temperatures fluctuate by about 17°F between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 13°F shift in average temperatures.

Precipitation

0mm50mm100mm150mm200mm250mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 25mmSnow: 7mmFebPrecipitation: 37mmSnow: 6mmMarPrecipitation: 53mmSnow: 5mmAprPrecipitation: 69mmSnow: 0mmMayPrecipitation: 86mmSnow: 0mmJunPrecipitation: 126mmSnow: 0mmJulPrecipitation: 242mmSnow: 0mmAugPrecipitation: 178mmSnow: 0mmSepPrecipitation: 168mmSnow: 0mmOctPrecipitation: 85mmSnow: 0mmNovPrecipitation: 40mmSnow: 1mmDecPrecipitation: 30mmSnow: 3mm
Precipitation
Snow
0in2in4in6in8in10inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 1inSnow (in): 3inFebPrecipitation: 1.4inSnow (in): 2inMarPrecipitation: 2.1inSnow (in): 2inAprPrecipitation: 2.7inSnow (in): 0inMayPrecipitation: 3.4inSnow (in): 0inJunPrecipitation: 5inSnow (in): 0inJulPrecipitation: 9.5inSnow (in): 0inAugPrecipitation: 7inSnow (in): 0inSepPrecipitation: 6.6inSnow (in): 0inOctPrecipitation: 3.3inSnow (in): 0inNovPrecipitation: 1.6inSnow (in): 0inDecPrecipitation: 1.2inSnow (in): 1in
Precipitation
Snow (in)

Daejeon is a moderately rainy area, receiving approximately 1,141 mm of precipitation annually, which averages out to around 95 mm per month. The wettest month is July, averaging 242 mm of rainfall. August and September also tend to see above-average precipitation. The driest month is January, with just 25 mm. That's 217 mm less than July, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and December, totalling around 22cm annually. January is the snowiest month with approximately 7cm.Daejeon is a moderately rainy area, receiving approximately 44.9 in of precipitation annually, which averages out to around 3.7 in per month. The wettest month is July, averaging 9.5 in of rainfall. August and September also tend to see above-average precipitation. The driest month is January, with just 1 in. That's 8.5 in less than July, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and December, totalling around 9in annually. January is the snowiest month with approximately 3in.

Wind

0km/h5km/h10km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 9km/hFebWind Speed: 10km/hMarWind Speed: 9km/hAprWind Speed: 10km/hMayWind Speed: 9km/hJunWind Speed: 8km/hJulWind Speed: 8km/hAugWind Speed: 8km/hSepWind Speed: 8km/hOctWind Speed: 8km/hNovWind Speed: 8km/hDecWind Speed: 9km/h
Wind Speed
0mph5mph10mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 5mphFebWind Speed: 6mphMarWind Speed: 6mphAprWind Speed: 6mphMayWind Speed: 6mphJunWind Speed: 5mphJulWind Speed: 5mphAugWind Speed: 5mphSepWind Speed: 5mphOctWind Speed: 5mphNovWind Speed: 5mphDecWind Speed: 5mph
Wind Speed

Daejeon is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.Daejeon is mildly breezy, with an average annual wind speed of 5mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is April, averaging 6mph, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 5mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1mph between the calmest and windiest months.

Best Time to Visit

Jan-1°31°F
Feb2°35°F
Mar8°46°F
Apr14°57°F
May19°65°F
Jun23°74°F
Jul26°79°F
Aug27°80°F
Sep22°72°F
Oct15°59°F
Nov8°46°F
Dec1°34°F

The best time to visit Daejeon is during May, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 86 mm per month. By contrast, August can be uncomfortably hot with highs reaching 31°C, while January is the coldest period with lows dropping to -5°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.The best time to visit Daejeon is during May, when the weather is most comfortable for travellers. During these months, average temperatures hover around 65°F with modest rainfall averaging 3.4 in per month. By contrast, August can be uncomfortably hot with highs reaching 88°F, while January is the coldest period with lows dropping to 23°F. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Daejeon based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Daejeon based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
-5 °C23 °F
4 °C39 °F
9 km/h5 mph
25 mm1 in
7 cm3 in
Feb
-3 °C27 °F
7 °C44 °F
10 km/h6 mph
37 mm1.4 in
6 cm2 in
Mar
3 °C37 °F
14 °C57 °F
9 km/h6 mph
53 mm2.1 in
5 cm2 in
Apr
8 °C47 °F
20 °C67 °F
10 km/h6 mph
69 mm2.7 in
0 cm0 in
May
13 °C56 °F
24 °C75 °F
9 km/h6 mph
86 mm3.4 in
0 cm0 in
Jun
19 °C66 °F
28 °C83 °F
8 km/h5 mph
126 mm5 in
0 cm0 in
Jul
23 °C73 °F
30 °C86 °F
8 km/h5 mph
242 mm9.5 in
0 cm0 in
Aug
23 °C74 °F
31 °C88 °F
8 km/h5 mph
178 mm7 in
0 cm0 in
Sep
18 °C65 °F
26 °C80 °F
8 km/h5 mph
168 mm6.6 in
0 cm0 in
OctCurrent
11 °C51 °F
20 °C68 °F
8 km/h5 mph
85 mm3.3 in
0 cm0 in
Nov
3 °C38 °F
14 °C56 °F
8 km/h5 mph
40 mm1.6 in
1 cm0 in
Dec
-3 °C26 °F
5 °C42 °F
9 km/h5 mph
30 mm1.2 in
3 cm1 in