Last updated: October 30, 2025
July in Osan, South Korea offers a warm and humid experience, with temperatures soaring to a maximum of 36°C (98°F) and averaging around 26°C (79°F). The month is characterized by significant rainfall, totaling 235 mm (9.3 in) over 14 days, contributing to a high humidity level of 91%. Visitors and locals alike can expect a mixture of showers and sultry days, making it essential to stay hydrated and prepared for the heat while enjoying the vibrant summer atmosphere.
In Osan, South Korea, July brings a surge of warmth, marking the height of summer with minimum temperatures around 18°C (65°F) and averaging 26°C (79°F). The heat peaks in the afternoons, reaching highs of a sweltering 36°C (98°F), making it one of the hottest months of the year. Compared to earlier months like June, where the maximum temperature hovers around 33°C (91°F), July's warmth is a clear trend as the region transitions fully into summer. This seasonal heat invites locals and visitors alike to enjoy outdoor activities, although the humidity can make it feel even warmer. As the month progresses, the temperatures gradually start to cool, hinting at the arrival of autumn, but for now, July's vibrancy and heat dominate the climate scene.
In July, Osan, South Korea experiences a remarkable surge in rainfall, with precipitation reaching 235 mm (9.3 in) over the month, making it one of the wettest times of the year. The frequency of rain also peaks during this month, with precipitation occurring on 14 days, which is twice the number of days seen in the earlier months. This trend is a stark contrast to the drier winter months, where rainfall is minimal, with January and February averaging just 21 mm and 23 mm, respectively. Following July, precipitation remains high in August, but begins to taper off in September, indicating a seasonal transition typical of the region. The shift from minimal winter rain to the intense monsoon-like conditions of summer vividly characterizes Osan's climate throughout the year.
July marks a peak in humidity levels in Osan, South Korea, reaching 91%, a trend that continues into August. This summer intensity follows a gradual rise from January's 71%, culminating in the increasingly muggy months of late spring and early summer. The humidity escalates steadily, jumping to 81% in May and climbing to 85% in June. As the sweltering heat of July sets in, residents and visitors alike experience the highest moisture levels of the year, creating a distinctly humid atmosphere that's characteristic of Osan’s summer months. After August, a noticeable decline commences, with humidity levels dropping to 77% by September, signaling a gradual shift towards the comfortable autumn months.
In Osan, South Korea, July marks a peak in sun intensity with a UV Index of 11, categorizing it as extreme. During this scorching month, the risk of harm from unprotected sun exposure significantly escalates, with a mere 10 minutes leading to potential skin damage. Following months of steady increases, beginning with a moderate index in January, the UV levels surge to dangerous heights by mid-summer. This trend underscores the importance of taking protective measures, as the sun's power won't ease up until August, when the UV Index remains equally intense at 11. For those planning outdoor activities, staying informed about the UV Index is crucial. Explore more about the light levels in this region at Osan UV Index.
UV Risk Categories
July in Osan, South Korea basks in a delightful 293 hours of sunshine, a slight dip from the vibrant rays of June. This month continues the trend of summer brilliance, following the peak of sun-filled days in May and June. Although July sees a decrease, it still boasts ample sunlight, making it a fantastic time for outdoor activities and exploration. As we transition into August, the sun shines on with 290 hours, making the summer months particularly bright and enjoyable. Overall, the sunshine hours highlight a gradual decline after the early summer peak but still offer plenty of warmth and light for residents and visitors alike.
As July approaches in Osan, South Korea, residents and visitors can expect a noticeable dip in the likelihood of sunny weather, with only 30% chance of sunshine. This decline follows a generally consistent trend throughout the spring and early summer months, where May and June also show lower probabilities of clear skies at 38% and 39% respectively. Interestingly, this trend contrasts sharply with the brighter prospects of the winter months, such as December, which boasts a 63% chance of sun. As the summer heat intensifies, the weather tends to become more unpredictable, making July one of the less favorable months for sun-seekers in Osan.
In Osan, South Korea, July enjoys a splendid 14 hours of daylight, mirroring the bright conditions of June. This peak summer month continues the trend of gradually increasing daylight that began in the early months of the year, reaching a high of 14 hours in both May and June. As the days slowly shorten leading into August, daylight decreases to 13 hours, but still provides ample time to bask in the warm summer sun. This pattern reflects a gradual transition from the shorter days of winter to the extended daylight of summer, ultimately emphasizing the vibrant and lively atmosphere that characterizes the sun-filled days of July.
In July, the wind in Osan, South Korea experiences a notable dip, with an average speed of just 2.0 m/s (4 mph). This decrease continues a trend observed since early summer, where wind speeds have consistently been lower compared to the spring months. In fact, from June's 2.2 m/s, July showcases the least breeze of the year, highlighting the warm and still atmosphere typical of the season. As the country moves into August, a slight recovery to 2.3 m/s (5 mph) is anticipated, but July's calm winds often invite stifling heat, prompting many to seek shade and refreshment during the peak summer days.
Weather in Osan varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Osan, focusing on differences in temperature, rainfall, humidity, and UV levels.
July and January present stark contrasts in weather patterns. In July, temperatures soar with a minimum of 18°C (65°F), averaging around 26°C (79°F), and peaking at a scorching 36°C (98°F). This month is characterized by high humidity at 91% and substantial rainfall, totaling 235 mm (9.3 in) over about 14 days. In contrast, January offers a frigid experience, with temperatures dropping dramatically to a minimum of -17°C (2°F), an average of -2°C (29°F), and a maximum of 13°C (55°F). Precipitation is minimal, recorded at only 21 mm (0.8 in) across just 2 days, and humidity is lower at 71%. For more details on January weather, you can check Osan weather in January.
July and February present stark contrasts in weather conditions. In July, temperatures range significantly from a minimum of 18°C (65°F) to a scorching maximum of 36°C (98°F), with an average of 26°C (79°F). The month is characterized by high humidity at 91% and substantial precipitation, totaling 235 mm (9.3 in) over 14 days. In contrast, February experiences much colder temperatures, with a minimum of -15°C (4°F) and an average around 0°C (33°F), peaking at only 18°C (65°F). It sees minimal precipitation at just 23 mm (0.9 in) over 4 days and a lower humidity level of 65%. These differences highlight how July is typically hot and wet, while February is cold and dry. For more detailed information, check out Osan weather in February.
The weather in July is significantly warmer and more humid compared to March. In July, temperatures range from a minimum of 18°C (65°F) to a maximum of 36°C (98°F), with an average of 26°C (79°F) and high humidity levels at 91%. This month also experiences considerable precipitation, with around 235 mm (9.3 in) falling over 14 days. In contrast, March has a much cooler climate, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 21°C (70°F) and an average of 7°C (44°F). Precipitation is significantly lower at 47 mm (1.9 in) over just 5 days, and the humidity is more manageable at 65%. For more detailed information, you can visit Osan weather in March.
July and April present stark contrasts in weather. In July, temperatures soar with a minimum of 18°C (65°F) and an average of 26°C (79°F), peaking at 36°C (98°F), accompanied by high humidity levels at 91%. The month is also marked by significant precipitation, totaling 235 mm (9.3 in) over 14 days. In contrast, April offers a much cooler climate, with temperatures ranging from a chilly minimum of -1°C (30°F) to a pleasant maximum of 28°C (82°F) and an average of 12°C (54°F). Precipitation is considerably less in April, at just 54 mm (2.1 in) over 5 days, coupled with lower humidity at 75%. For more details on April's weather, you can visit Osan weather in April.
In comparing the weather between May and July, a noticeable contrast in temperatures and precipitation can be observed. July boasts significantly higher temperatures, with a minimum of 18°C (65°F) and an average of 26°C (79°F), reaching a maximum of 36°C (98°F). In contrast, May features a much cooler climate, with temperatures ranging from a minimum of 6°C (42°F) to an average of 18°C (64°F) and a maximum of 31°C (89°F). Precipitation levels are also higher in July, with 235 mm (9.3 in) over 14 days, compared to May’s 98 mm (3.9 in) over 8 days. Additionally, July experiences higher humidity at 91%, while May's humidity sits at 81%. For more detailed information, you can visit Osan weather in May.
In comparing the weather between June and July, July experiences much warmer temperatures, with average highs reaching 36°C (98°F) compared to June's maximum of 33°C (91°F). The minimum temperatures also significantly rise, from 12°C (53°F) in June to 18°C (65°F) in July, leading to a more humid climate in July at 91%, compared to June's 85%. Additionally, July sees a considerable increase in precipitation, with 235 mm (9.3 in) over 14 days, contrasted with June's 80 mm (3.1 in) over just 7 days. For a more detailed look at the weather patterns for June, you can check Osan weather in June.
In comparing the weather of July and August, we see that both months experience high humidity levels, remaining steady at 91%. July has a slightly lower average temperature of 26°C (79°F) compared to August's average of 27°C (80°F). While July's maximum temperature peaks at 36°C (98°F), August sees a higher maximum of 38°C (101°F). Precipitation also increases in August, with 255 mm (10.1 in) compared to July's 235 mm (9.3 in), despite both months having rain on 14 days. For more detailed insights, check out Osan weather in August.
In July, the weather is characterized by warm temperatures, with an average of 26°C (79°F) and peaks reaching up to 36°C (98°F), along with high humidity levels at 91%. The month is also marked by significant rainfall, totaling 235 mm (9.3 in) over approximately 14 days. In contrast, September brings a noticeable shift with cooler temperatures, featuring a minimum of 9°C (48°F) and an average of 22°C (71°F), while maximums reach 31°C (88°F). Precipitation decreases to 136 mm (5.4 in) over 9 days, and humidity drops to 77%. This transition from July's sweltering hot and humid climate to September's milder, more comfortable weather is quite pronounced. For more details on the weather in September, you can visit Osan weather in September.
In July, the weather is characterized by warm temperatures with an average of 26°C (79°F), reaching highs of up to 36°C (98°F). The month experiences significant rainfall, with approximately 235 mm (9.3 in) of precipitation spread over 14 days and a high humidity level of 91%. In contrast, October brings a cooler climate, with average temperatures dropping to 15°C (59°F) and nighttime lows dipping to around 1°C (33°F). Rainfall is considerably less, totaling 62 mm (2.5 in) over just 5 days, and humidity decreases to 79%. For more details on October weather, you can check Osan weather in October.
July and November present stark contrasts in weather. In July, temperatures soar with a minimum of 18°C (65°F) and an average high of 26°C (79°F), reaching peaks of up to 36°C (98°F). This month is characterized by high humidity levels at 91% and significant rainfall, totaling 235 mm (9.3 in) over about 14 days. In contrast, November brings a notable drop in temperatures, with a minimum of -5°C (23°F) and an average of 8°C (46°F), while highs reach 21°C (70°F). Precipitation is much lower at 54 mm (2.1 in) spread over just 5 days, and humidity sits at a cool 80%. For more detailed information about the weather in November, you can visit Osan weather in November.
In July, the weather is characterized by warm temperatures ranging from a minimum of 18°C (65°F) to a maximum of 36°C (98°F), with an average of 26°C (79°F). This month experiences significant rainfall, totaling 235 mm (9.3 in) across 14 days, and high humidity levels at 91%. In stark contrast, December sees frigid temperatures, with a minimum of -14°C (8°F) and a maximum of 13°C (56°F), averaging around 0°C (33°F). Precipitation drops to just 26 mm (1.0 in) over 5 days, and humidity decreases to 74%. The weather difference reflects the dramatic seasonal shift, making July warm and humid while December is cold and relatively dry. For more details on December weather, you can visit Osan weather in December.
July in Osan is characterized by a tropical climate that sets it apart from other months, with its high humidity and significantly increased precipitation. While temperatures soar, reaching maximums that can exceed 36°C (98°F), the average remains comfortably warm at about 26°C (79°F). The summer rains arrive frequently, with nearly half the month experiencing rainfall, making it the wettest period of the year. This combination of heat and humidity creates a unique atmosphere that differs dramatically from the drier, milder seasons. For more insights into Osan's weather patterns and how they compare throughout the year, explore the detailed information available at Osan Climate.