July Weather in Daejeon, South Korea

Last updated: October 30, 2025

July in Daejeon, South Korea, showcases a hot and humid summer climate, with temperatures reaching a maximum of 38°C (100°F). The month's average temperature hovers around 26°C (78°F), while the minimum temperature dips to a comfortable 17°C (62°F). Rainfall is significant, with a total precipitation of 214 mm (8.4 in) spread across approximately 16 days, contributing to the region's high humidity levels of 91%. This combination of heat and moisture makes July a distinctive, albeit challenging, time for residents and visitors alike in this vibrant city.

July Temperature in Daejeon

In July, Daejeon, South Korea, experiences a notable shift in temperatures, embracing the peak of summer with a minimum of 17°C (62°F) and an average soaring to 26°C (78°F). With maximum temperatures reaching a blistering 38°C (100°F), the month stands out as one of the hottest of the year, signaling a vibrant and energetic atmosphere in the city. This marked increase follows a progressive warming trend seen from June, where the temperatures start to rise significantly, inviting residents and visitors alike to enjoy outdoor activities and the lively summer festivities. As July transitions into August, the warmth persists, continuing to captivate those who seek the thrills of summer in this dynamic South Korean locale.

July Weather in Daejeon: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Daejeon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Daejeon, July typically has an average temperature of 26°C (78°F), with highs reaching up to 38°C (100°F) and lows dropping to around 17°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec313446556573788070594634
Data source: Temperature data for Daejeon generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Daejeon

In July, Daejeon experiences a significant surge in precipitation, with an impressive total of 214 mm (8.4 in), marking it as the wettest month of the year. This considerable rainfall is spread across 16 days, reflecting the peak of the monsoon season when torrential downpours become common. The jump from 97 mm in June emphasizes the dramatic escalation in moisture as summer progresses, setting a clear trend of increased rainfall during the mid-summer months. As August follows closely with 221 mm, it is evident that July's heavy showers are part of a broader pattern of significant monsoonal precipitation, drastically balancing the generally drier months earlier in the year.

July Precipitation Trends in Daejeon

The chart displays monthly precipitation patterns in Daejeon, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Daejeon, July typically receives around 214 mm (8.4 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec233664668297214221177683626
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Daejeon

In July, Daejeon, South Korea, experiences its peak humidity, reaching a notable 91%. This marks a significant increase from the earlier months of the year, where humidity levels gradually rose from 71% in January to 85% in June. The summer months, particularly June and July, showcase a consistent trend of rising humidity, likely contributing to the sultry atmosphere typical of this season. Interestingly, August maintains this high humidity level, indicating that the heat and moisture in the air linger, influencing both the climate and the daily experiences of Daejeon’s residents. As the seasons transition, humidity starts to decline in September, hinting at the cooler, more comfortable months ahead.

July Average Humidity in Daejeon

This chart illustrates the average monthly humidity levels in Daejeon, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Daejeon is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec71%65%65%75%81%85%91%91%77%79%80%74%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Daejeon

In July, Daejeon experiences one of its peak UV Index levels at 11, falling into the extreme exposure category, with a burn time of just 10 minutes. This is on par with June's intensity and sets the stage for the subsequent month of August, which escalates to an index of 12. As the summer progresses, both June and July showcase the heightened risks associated with sun exposure, emphasizing the need for precautions. Notably, after the milder months of winter and early spring, where UV levels were moderate to high, the dramatic rise beginning in April reveals how the sun's strength increasingly factors into outdoor activities. For a comprehensive understanding of the UV trends in this vibrant city, visit Daejeon UV Index.

Maximum UV Index Levels in Daejeon for July

The chart shows the monthly maximum UV Index (UVI) for Daejeon in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in Daejeon typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579911111210753
Data source: Daejeon July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

July Sunshine in Daejeon

In July, the vibrant city of Daejeon, South Korea, basks in the warmth of 265 hours of sunshine, a delightful peak of summer that invites outdoor adventures and gatherings. While July's sunlit days are slightly shorter than the preceding months of May and June, they offer a refreshing contrast to the sweltering heat that often envelopes the region. As the summer progresses into August, Daejeon maintains its sunny disposition with 273 hours of sunlight, showcasing a trend of abundant brightness during these warmer months. This fluctuation, alongside the gradual decrease of hours towards autumn, paints a picture of a city that thrives under the sun, with each month building upon the last to create a tapestry of sunny days that Daejeon residents cherish.

Monthly Sunshine Duration in Daejeon: July Highlighted

The July sunshine duration represents the total number of hours Daejeon experiences direct sunlight during the month of July, excluding cloudy or obstructed periods. This chart compares the sunshine duration of July with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec194h236h276h279h303h301h265h273h243h258h229h236h
Data source: Daejeon July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Daejeon During July

In Daejeon, South Korea, July is characterized by the lowest likelihood of sunny weather, with only a 26% chance of sunshine. This marks a notable decline from the spring months—where March, April, and May hover around the mid-40% mark—and continues the downward trend seen in June. As the summer progresses into August, this chance eases slightly to 28%, yet the overall tendency indicates a period of increased cloudiness and potential rainfall. In contrast, the transition into the autumn months sees a resurgence in sunny days, with October and November boasting more favorable conditions, at 51% and 59%, respectively. Thus, if you're a sun seeker, you might want to plan your visit to Daejeon for later in the year!

Percentage of Sunny Days in July in Daejeon

The chart illustrates the percentage of sunny days in Daejeon throughout the year, with July highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Daejeon experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec45%49%40%42%37%36%26%28%37%51%59%60%
Data source: Daejeon July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Daejeon in July

In July, Daejeon basks in 14 hours of daylight, mirroring the sun-drenched months of May and June. This peak sunlight period showcases a gradual rise from January's meager 9 hours to a vibrant summer glow, indicating the city's transition into the heart of summer. As daylight begins to wane in August, with 13 hours, it hints at the impending shift towards shorter days. The trend reflects a predictable cycle of increasing daylight leading up to summer’s zenith, followed by a gradual decline as autumn approaches. This rhythm not only marks the changing seasons but also invites residents and visitors alike to relish the longer days of July, creating perfect opportunities for outdoor pursuits and summer festivities.

Average Daylight Hours in Daejeon for July

The chart illustrates the variation in daylight duration in Daejeon throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 58m10h 50m11h 57m13h 7m14h 5m14h 34m14h 19m13h 28m12h 22m11h 14m10h 14m9h 43m
Data source: Daejeon daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Daejeon

In Daejeon, South Korea, the month of July experiences a mild breeze with an average wind speed of 2.1 m/s (5 mph), consistent with the lighter winds observed in June and projected to continue into August. This period of low wind speed marks a notable dip compared to the slightly breezier spring months, where winds hovered around 3.0 m/s (7 mph) in April. Overall, the summer months see a significant decrease in wind activity, creating a tranquil atmosphere ideal for enjoying outdoor activities while the gentle breezes offer just enough refreshment during the warm weather. As summer transitions into autumn, wind speeds gradually pick up again, hinting at a return to the seasonal variability that characterizes Daejeon's climate.

Average July Wind Speed in Daejeon

The chart displays monthly wind speed patterns in Daejeon, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.83.32.53.02.92.12.1 m/s2.12.92.12.52.7
Data source: Daejeon July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Daejeon Compares to Other Months

Weather in Daejeon varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Daejeon, focusing on differences in temperature, rainfall, humidity, and UV levels.

July and January present stark contrasts in weather conditions. In July, temperatures range from a mild 17°C (62°F) to a scorching high of 38°C (100°F), with an average of 26°C (78°F) and significant humidity at 91%. This month also experiences ample rainfall, with 214 mm (8.4 in) of precipitation spread over 16 days. In contrast, January is marked by frigid temperatures, with lows plummeting to -19°C (-2°F) and average highs only reaching 13°C (57°F). Precipitation in January is minimal, totaling just 23 mm (0.9 in) over 4 days, and the humidity is relatively lower at 71%. For more details, you can check Daejeon weather in January.

July and February present starkly contrasting weather conditions. In July, temperatures soar with a minimum of 17°C (62°F) and an average of 26°C (78°F), peaking at a sweltering 38°C (100°F). This month also sees considerable rainfall, with 214 mm (8.4 in) falling over 16 days, accompanied by high humidity levels of 91%. In contrast, February is much colder, with temperatures dipping to a minimum of -15°C (6°F) and averaging just 1°C (34°F), reaching a maximum of 21°C (71°F). Precipitation is minimal at 35 mm (1.4 in) over just 4 days, and the humidity is lower at 65%. For more details on February's weather, you can visit Daejeon weather in February.

When comparing the weather between July and March, there is a striking contrast in temperatures and conditions. July boasts a warm average temperature of 26°C (78°F), with peaks reaching as high as 38°C (100°F), while March is much cooler, with an average of just 8°C (46°F) and a maximum of 24°C (75°F). Additionally, July experiences significantly higher precipitation, totaling 214 mm (8.4 in) over 16 rainy days, compared to March's 63 mm (2.5 in) across only 7 days. Humidity levels also differ, with July's humidity at a high 91%, while March maintains a more comfortable 65%. For more detailed information, check out Daejeon weather in March.

In comparing the weather of July and April, a striking contrast emerges. July boasts a much warmer climate, with temperatures ranging from a minimum of 17°C (62°F) to a scorching maximum of 38°C (100°F), and an average of 26°C (78°F). This month also experiences significant rainfall, with 214 mm (8.4 in) spread over 16 days, contributing to high humidity levels at 91%. In contrast, April presents a cooler atmosphere with temperatures fluctuating between -1°C (30°F) and a maximum of 29°C (85°F), averaging only 13°C (56°F). Rainfall is considerably lighter during this month, totaling 66 mm (2.6 in) across just 6 days, and humidity levels are lower at 75%. For a more detailed look at the weather during April, check out Daejeon weather in April.

When comparing the weather in July and May, it's clear that July is significantly warmer and more humid. In July, temperatures range from a minimum of 17°C (62°F) to a maximum of 38°C (100°F), with an average temperature of 26°C (78°F). In contrast, May has much cooler temperatures, with a minimum of 4°C (39°F), an average of 18°C (65°F), and a maximum of 31°C (89°F). Additionally, July experiences higher rainfall—214 mm (8.4 in) over 16 days—compared to May's 82 mm (3.2 in) over just 9 days. The humidity also peaks in July at 91%, slightly above May’s 81%. For more details on May weather, check Daejeon weather in May.

When comparing the weather in June and July, it is evident that July is significantly warmer and more humid. In June, temperatures range from a minimum of 11°C (52°F) to a maximum of 35°C (95°F), with an average of 23°C (73°F). In contrast, July sees much higher temperatures, with a minimum of 17°C (62°F), an average of 26°C (78°F), and a peak reaching up to 38°C (100°F). Additionally, July experiences a substantial increase in precipitation, logging 214 mm (8.4 in) across 16 days, compared to June's 97 mm (3.8 in) over just 8 days. The humidity also rises in July to 91%, making it a notably stickier month. For more detailed information, you can check Daejeon weather in June.

In comparing July and August weather, both months exhibit a strikingly similar pattern, with July featuring an average temperature of 26°C (78°F) and August slightly warmer at an average of 27°C (80°F). The temperature peaks in August also reach a high of 39°C (102°F), just above July's maximum of 38°C (100°F). Precipitation levels are comparable, with July receiving 214 mm (8.4 in) and August slightly higher at 221 mm (8.7 in), both occurring over 16 days. The humidity remains steady at 91% for both months, contributing to a muggy climate. For more detailed insights, you can check out Daejeon weather in August.

In July, the weather tends to be quite hot, with average temperatures reaching around 26°C (78°F) and soaring highs of up to 38°C (100°F). This month also sees significant precipitation, with around 214 mm (8.4 in) of rain over 16 days, contributing to a high humidity level of 91%. In contrast, September offers a more comfortable climate, with cooler temperatures averaging 21°C (70°F) and maximums peaking at 30°C (87°F). Precipitation in September is less frequent, totaling 176 mm (6.9 in) over just 9 days, and humidity drops to a more moderate 77%. For a closer look at September's climate specifics, check out Daejeon weather in September.

July and October present a stark contrast in weather conditions. July boasts warm temperatures, with a minimum of 17°C (62°F) and an average of 26°C (78°F), soaring up to a maximum of 38°C (100°F). In addition, this summer month experiences high humidity levels at 91% and significant precipitation of 214 mm (8.4 in) over 16 days. In contrast, October brings cooler temperatures, ranging from a minimum of 0°C (33°F) to an average of 15°C (59°F) and a maximum of 31°C (88°F). The month is characterized by much lower precipitation—only 68 mm (2.7 in) over just 5 days—and a reduction in humidity to 79%. For more detailed insights on October weather, you can visit Daejeon weather in October.

In July, temperatures soar with a minimum of 17°C (62°F) and an average high of 26°C (78°F), peaking at sweltering 38°C (100°F). The month is characterized by high humidity at 91% and frequent rainfall, with 214 mm (8.4 in) of precipitation spread over 16 days. In stark contrast, November brings a sharp drop in temperatures, with a minimum of -4°C (24°F) and a milder average of 8°C (47°F), reaching a maximum of 21°C (70°F). The month sees significantly less precipitation, totaling only 36 mm (1.4 in) across just 5 days, and a decrease in humidity to 80%. For more details, check out Daejeon weather in November.

July and December present a stark contrast in weather conditions. July boasts warm temperatures with minimums of 17°C (62°F) and maximums reaching up to 38°C (100°F), alongside high humidity at 91% and significant precipitation totaling 214 mm (8.4 in) over 16 days. In contrast, December experiences a much colder climate, with temperatures plummeting to a minimum of -14°C (6°F) and an average of just 1°C (34°F). Precipitation is minimal in December, amounting to only 26 mm (1.0 in) over just 4 days, and humidity stands at a lower 74%. For more detailed insights about December's weather, you can visit Daejeon weather in December.

Compare Daejeon's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in Daejeon

July in Daejeon brings a stark contrast to the city's other months, characterized by sizzling temperatures that can soar up to 38°C (100°F), making it one of the hottest periods of the year. The average temperature sits at a balmy 26°C (78°F), inviting residents and visitors to engage in summer activities, albeit with the backdrop of high humidity that averages a sweltering 91%. With frequent precipitation over 16 days, the month also injects a refreshing twist, providing a much-needed respite from the heat. This combination of heat and moisture creates a uniquely sticky atmosphere, making July distinctly different from the more temperate seasons. For a deeper dive into the weather trends, explore the Daejeon Climate.