Last updated: October 30, 2025
August in Seoul, South Korea brings a vibrant mix of heat and humidity, characterizing the height of summer. With maximum temperatures soaring up to 38°C (101°F), the month averages around 26°C (80°F), offering a warm but surprisingly comfortable backdrop for outdoor explorations. However, the weather can be quite variable, as 16 days of precipitation accumulate to about 269 mm (10.6 in), creating a lush and verdant cityscape. High humidity levels hovering around 91% add to the tropical feel, making it essential for visitors and locals alike to stay hydrated and prepared for sudden rain showers. Experience the dynamic weather patterns of August, where the warmth is punctuated by refreshing summer storms in this bustling metropolis!
In August, Seoul, South Korea, experiences the height of summer, characterized by warm to hot temperatures that invite both locals and tourists to enjoy outdoor activities. With a minimum temperature around 16°C (61°F) and an average of 26°C (80°F), the city basks in a pleasant warmth. However, the real heat peaks as temperatures can soar to a sizzling 38°C (101°F), making it one of the hottest months of the year. This trend of rising temperatures is evident as summer transitions from July's already high averages, while August promises longer, sun-filled days perfect for exploring vibrant street markets or relaxing in the beautiful parks. As the month wraps up, the gradual shift towards cooler September temperatures begins, gently signaling the end of the sweltering season.
In August, Seoul experiences some of its heaviest rainfall, with an astonishing 269 mm (10.6 in) of precipitation over 16 days. This month showcases the peak of the monsoon season, following the intense downpours of July, which already brought 252 mm (9.9 in) across 15 days. Notably, August's precipitation marks a significant increase, making it one of the wettest months of the year. Combined with the amounts from July, the summer months highlight a trend of escalating rainfall, contributing to the region's lush landscapes and vibrant greenery. As the summer heat lingers, these consistent rain showers play a crucial role in shaping the local climate and ecosystems, setting the stage for a refreshing transition into the cooler autumn months ahead.
In Seoul, South Korea, August brings a peak in humidity, mirroring July's high at an average of 91%. This summer month is characterized by oppressively sticky air, making it one of the most humid times of the year. Following a gradual increase from 71% in January, humidity levels surge through the spring, culminating in the muggy summer months of June and July. Despite a slight decrease to 77% in September, the trend showcases how the city’s humidity can influence the climate, making it essential for locals and visitors alike to prepare for the sweaty conditions ahead during these peak summer months. The consistent high humidity levels can be attributed to the tropical monsoon climate, which plays a significant role in Seoul's weather patterns throughout the year.
In August, Seoul experiences its peak UV Index, soaring to an extreme level of 11. With a burn time of just 10 minutes, this month underscores the critical need for sun protection, as the exposure category remains at its highest intensity. Interestingly, this follows July, which shares the same extreme rating, highlighting a consistent trend in intense sunlight during the summer months. As the season transitions into September, the UV Index drops to 9, yet it still signifies very high levels of intensity. Such fluctuations illustrate the importance of staying vigilant about sun safety during these warmer months. For more detailed information, check out the Seoul UV Index.
UV Risk Categories
In August, Seoul basks in the glow of 289 hours of sunshine, continuing a summer trend that peaks in the previous months. From January's chilly 199 hours, the city steadily embraces more sunlight, reaching its annual high of 317 hours in June. As summer wanes, sunshine hours gradually taper, with July witnessing a slight dip to 294 hours before August’s slight decline. The consistent warmth of summer fosters an inviting atmosphere for both locals and visitors, making this vibrant city an ideal hotspot during these sun-drenched weeks. As the days grow shorter into autumn, the shift in light serves as a gentle reminder of summer's fleeting beauty.
In August, Seoul experiences a 30% chance of sunny weather, placing it among the months with the lowest likelihood of sunshine. This trend aligns with the preceding July, which also sees a modest 30% chance, suggesting that the summer months may be more cloud-laden than sunny. Notably, the chances of clear skies begin to improve in September, when the likelihood rises to 41%. Overall, August contributes to a pattern of fluctuating sunshine probabilities throughout the year, with a marked increase in brightness as autumn approaches.
In August, Seoul enjoys approximately 13 hours of daylight, marking a slight decline from the peak summer months of June and July, when days stretch to their longest at 14 hours. This gradual decrease reflects the transition towards autumn, as daylight hours begin to shorten after the summer solstice. Interestingly, this pattern of longer days in late spring and early summer gradually tapers off, with a notable shift starting in September, when sunlight dips to 12 hours. Overall, August embodies a moment of balance, where the days remain long enough to relish the warmth of summer while hinting at the approaching changes of the fall season.
August in Seoul experiences a gentle breeze, with an average wind speed of 2.2 m/s (approximately 5 mph), slightly higher than the more languid winds of July, which drop to 1.8 m/s. This mild gustiness heralds the transition from summer to early autumn, as the city begins to cool slightly. Notably, throughout the summer months, wind speeds tend to be at their lowest, with June and July showcasing calm conditions. However, as the calendar shifts toward September, a modest increase in wind velocity to 2.4 m/s re-emerges, hinting at the refreshing breezes that accompany the fall season. Overall, the August winds in Seoul serve as a subtle reminder of nature’s cyclical rhythm, bridging the warmth of summer with the crispness of fall.
Weather in Seoul varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Seoul, focusing on differences in temperature, rainfall, humidity, and UV levels.
The weather in August and January presents a striking contrast. August experiences warm temperatures, with averages around 26°C (80°F) and highs soaring up to 38°C (101°F), accompanied by high humidity levels of 91% and substantial rainfall of 269 mm (10.6 in) over 16 days. In stark contrast, January sees frigid conditions, with average temperatures dropping to -2°C (28°F) and lows plummeting to -18°C (1°F), along with minimal precipitation of just 19 mm (0.8 in) across only 2 days and a humidity level of 71%. This drastic difference highlights the seasonal extremes, making August a time of heat and moisture, while January is characterized by cold and dryness. For more detailed information on January weather, you can visit Seoul weather in January.
August and February present a stark contrast in weather conditions. In August, temperatures soar with a minimum of 16°C (61°F) and an average of 26°C (80°F), peaking at a sweltering 38°C (101°F). This month is characterized by high humidity at 91% and significant rainfall, totaling 269 mm (10.6 inches) over 16 days. In contrast, February brings much colder temperatures, with a minimum of -14°C (7°F), an average of 0°C (32°F), and a maximum of 18°C (65°F). Precipitation is minimal in February, totaling only 22 mm (0.8 inches) across just 4 days, coupled with lower humidity at 65%. For a detailed look at February's climate, you can visit Seoul weather in February.
August and March present strikingly contrasting weather patterns. In August, temperatures soar with a minimum of 16°C (61°F) and can reach a sweltering maximum of 38°C (101°F), while the average temperature settles around 26°C (80°F). High humidity at 91% coupled with significant rainfall of 269 mm (10.6 in) over 16 days creates a hot and humid environment. In stark comparison, March features much cooler temperatures, ranging from a chilling minimum of -7°C (20°F) to a mild maximum of 21°C (70°F) and an average of 7°C (44°F). Precipitation is light at 46 mm (1.8 in) over just 5 days, with a lower humidity level of 65%. For more detailed information, you can check Seoul weather in March.
When comparing the weather in August and April, the contrast is quite striking. August is characterized by high temperatures, with a minimum of 16°C (61°F) and an average of 26°C (80°F), peaking at a sweltering 38°C (101°F). In addition to the heat, the month sees substantial rainfall, totaling 269 mm (10.6 in) over 16 days, along with a high humidity level of 91%. In stark contrast, April experiences much cooler temperatures, with a minimum of 0°C (32°F) and an average of 12°C (54°F), reaching a maximum of 28°C (82°F). Precipitation in April is significantly lower at 55 mm (2.2 in) over just 6 days, and the humidity levels are more moderate at 75%. For more detailed insights on April's weather, visit Seoul weather in April.
In comparing the weather patterns of August and May, it becomes evident that August is significantly warmer and more humid. The minimum temperature in August hovers around 16°C (61°F), with an average high of 26°C (80°F), while May sees much cooler temperatures, with a minimum of 6°C (43°F) and an average high of 18°C (64°F). Additionally, August experiences considerably more precipitation, with 269 mm (10.6 in) falling over 16 days, compared to May's 111 mm (4.4 in) across just 9 days. The humidity levels also peak in August at 91%, slightly higher than May's 81%. For more specific details on May's weather, you can check out Seoul weather in May.
August weather in Seoul is characterized by higher temperatures and increased humidity compared to June. With average temperatures reaching 26°C (80°F) and maximums hitting 38°C (101°F), August feels notably warmer; in contrast, June sees a milder average of 22°C (72°F) with a maximum of 35°C (94°F). Precipitation also plays a significant role in August, with 269 mm (10.6 in) over 16 days, while June experiences lighter rainfall of 86 mm (3.4 in) spread over just 8 days. Additionally, the humidity levels peak at 91% in August, compared to 85% in June, making the summer months feel more oppressive. For more detailed information, check out Seoul weather in June.
When comparing the weather in August and July, both months exhibit warm temperatures, but August tends to be slightly hotter on average. While July has a minimum temperature of 18°C (64°F), August's minimum temperature drops to 16°C (61°F). Interestingly, the average temperature remains consistent at 26°C (79°F) in both months, although August reaches a higher maximum temperature of 38°C (101°F) compared to July's 36°C (97°F). Precipitation levels are notably higher in August, with 269 mm (10.6 in) over 16 days, compared to July's 252 mm (9.9 in) over 15 days. Humidity remains constant at 91% in both months, contributing to a muggy atmosphere. For more details on July weather, visit Seoul weather in July.
August and September present contrasting weather patterns. In August, temperatures are considerably higher, with a minimum of 16°C (61°F) and a sweltering maximum of 38°C (101°F), along with high humidity of 91%. This month is marked by substantial rainfall, averaging 269 mm (10.6 in) over 16 days. In contrast, September sees a notable decrease in temperature, with a minimum of 10°C (50°F) and a maximum of 31°C (88°F), creating a more comfortable climate with an average of 21°C (70°F). Rainfall also decreases significantly to 133 mm (5.2 in) over 9 days, and humidity drops to 77%. For more details, check out Seoul weather in September.
August and October present a stark contrast in weather conditions. In August, temperatures soar, with averages around 26°C (80°F) and maximums reaching up to 38°C (101°F), accompanied by high humidity levels of 91%. This month also sees significant rainfall, with precipitation occurring on 16 days totaling 269 mm (10.6 in). In comparison, October experiences much cooler temperatures, with averages dropping to 14°C (58°F) and min temperatures plummeting to 0°C (32°F). Rainfall decreases notably, with only 63 mm (2.5 in) across 6 days and humidity levels easing to 79%. For more detailed information, you can check Seoul weather in October.
August and November present striking contrasts in weather. In August, temperatures range from a minimum of 16°C (61°F) to a scorching maximum of 38°C (101°F), with an average of 26°C (80°F). This month also sees high humidity levels at 91% and considerable rainfall, with precipitation totaling 269 mm (10.6 in) across 16 days. Conversely, November experiences a much cooler climate, with temperatures ranging from a minimum of -7°C (21°F) to a maximum of 21°C (70°F) and an average of just 7°C (45°F). The month is significantly drier, with only 54 mm (2.1 in) of precipitation over just 5 days and humidity at a lower 80%. For more details about the weather during this time, check out Seoul weather in November.
August in Seoul is characterized by hot and humid conditions, with temperatures ranging from a minimum of 16°C (61°F) to a scorching maximum of 38°C (101°F) and an average of 26°C (80°F). The month typically experiences significant rainfall, totaling 269 mm (10.6 in) over about 16 days, and the humidity often reaches 91%, making the air feel quite oppressive.
In contrast, December brings a stark change in weather, with much colder temperatures that range from a minimum of -15°C (5°F) to a maximum of 12°C (54°F), averaging just -1°C (31°F). Precipitation is minimal during this month, totaling only 22 mm (0.9 in) over about 4 days, and although the humidity is lower than in August at 74%, the cold air can feel quite biting. For more information about December weather in Seoul, visit Seoul weather in December.
August in Seoul is characterized by hot, humid conditions that set it apart from the cooler months of the year. With an average temperature of around 26°C (80°F), the heat can peak dramatically, reaching up to 38°C (101°F), making it one of the hottest months. The city experiences a significant amount of rain during this time, receiving 269 mm (10.6 in) across approximately 16 days, leading to high humidity levels averaging 91%. This combination of heat and moisture creates a unique environment that can feel quite oppressive, encouraging locals and visitors alike to seek refuge in air-conditioned spaces. For a deeper understanding of how these summer months fit into the broader weather patterns, explore the detailed insights available at Seoul Climate.