Last updated: October 30, 2025
In August, Incheon, South Korea experiences a warm and humid climate, characterized by a maximum temperature of 36°C (97°F) and an average temperature of 27°C (80°F), providing a typical summer atmosphere. With a minimum temperature dipping to 17°C (63°F), visitors can expect a comfortable range for outdoor activities. However, be prepared for significant rainfall, as the city accumulates approximately 256 mm (10.1 in) of precipitation over about 15 rainy days, resulting in a humidity level that averages 91%. This blend of heat and moisture creates a vibrant, if sometimes soggy, summer in Incheon.
In August, Incheon, South Korea experiences a warm embrace as summer reaches its peak. With average temperatures soaring to 27°C (80°F), it’s a time of vibrant warmth and outdoor activities. The month boasts a minimum temperature of 17°C (63°F), making mornings and evenings pleasantly mild, while highs can reach a sizzling 36°C (97°F), providing the perfect backdrop for beach visits and festivals. This warm trend seamlessly follows July's heatwave and heralds the gradual transition into autumn, showcasing Incheon's dynamic climate. As the summer sun bathes the city, August is undoubtedly a high point in Incheon's annual temperature spectrum, inviting locals and visitors alike to soak in its warmth before the cooler months set in.
In August, Incheon experiences its peak precipitation, with an impressive 256 mm (10.1 in) of rain falling over 15 days. This marks a sharp increase from July's substantial 232 mm (9.1 in), indicating that the monsoon season is in full swing. The trend of rising rainfall begins early summer, with June recording 77 mm (3.0 in), while May sees a more moderate 107 mm (4.2 in). This cumulative effect reveals how August serves as the culmination of the wet season, underlining the region's subtropical climate characterized by heavy summer rains. As the monsoon tapers off in September, precipitation decreases significantly to 133 mm (5.2 in), heralding a transition into the drier months ahead.
In Incheon, South Korea, humidity levels follow a notable seasonal trend, peaking during the summer months. August, with its remarkable humidity rate of 91%, mirrors July's equally steamy conditions, reflecting the sultry heat of summer that envelops the region. The humidity steadily rises from the milder winter months of January and February, where levels dip to 71% and 65%, respectively. As spring blooms into summer, humidity escalates, reaching 81% in May and climbing swiftly to 85% by June. This consistent increase underscores Incheon’s transition into a tropical-like climate during the summer, before tapering off in the fall with September at 77% and October at 79%. As the year progresses, these fluctuations provide a fascinating glimpse into the changing weather patterns experienced in this vibrant city.
In August, Incheon experiences an extreme UV Index of 11, necessitating vigilant sun protection as the burn time is a mere 10 minutes. This surge reflects a trend observed from earlier months, as both July and August share the highest UV levels of the year, indicating a peak in sun intensity. The progression from a moderate UV Index of 3 in January to an extreme 11 in August underscores the shifting dynamics of seasonal sun exposure. As summer reaches its zenith, residents and visitors are urged to take proactive measures against UV radiation. For a deeper dive into the UV Index trends throughout the year, check out Incheon UV Index.
UV Risk Categories
In Incheon, South Korea, August basks in a warm glow, receiving a commendable 289 hours of sunshine. This amount of sunlight continues a trend of plentiful brightness throughout the summer, peaking in June with 317 hours before slightly tapering off in July. Despite this decline, August still maintains an impressive level of sunshine, reflecting a vibrant summer atmosphere that carries over from June and July. As the year progresses into the cooler months, Incheon experiences a gradual decrease in sunlight, with September dropping to 262 hours and November further dipping to 231 hours. This contrasting shift offers a rich tapestry of seasonal changes, showcasing Incheon’s diverse climate.
In August, the chances of sunny weather in Incheon, South Korea, drop to a modest 33%, reflecting a trend of diminishing sunshine as summer peaks. July sees the lowest likelihood at 32%, suggesting that the monsoon season can bring about cloudier days. The sunny disposition begins to improve again in September, with the likelihood climbing to 42%, indicating a gradual transition toward clearer skies as the city moves into autumn. This pattern highlights that while August may not be the sunniest month, the subsequent arrival of fall brings a resurgence of sunny days, making it a time of change in Incheon’s weather landscape.
In Incheon, South Korea, August marks a transition in daylight hours, with approximately 13 hours of sunshine, slightly reducing from the peak of 14 hours seen in the summer months of June and July. As the summer wanes, the gradual decrease in daylight hints at the approaching autumn, signaling shorter days ahead. Following the vibrant long days of late spring and summer, August still offers ample sunlight, allowing residents and visitors alike to enjoy the beautiful landscapes and cultural festivities that characterize this lively season. As the calendar turns to September, daylight will continue its gentle decline, reminding us of the cyclical rhythm of nature.
In August, the wind in Incheon, South Korea, tends to be gentle, averaging around 2.6 m/s (6 mph). This slight increase from the summer lows of July's 2.3 m/s reflects a pattern of gradually shifting breezes as the region transitions from the heat of mid-summer to the cooler autumn months. Notably, August's wind speed is among the lower averages for the year, consistent with the trend of diminishing winds seen in June and July. As the month progresses, one can expect a refreshing yet mild breeze, setting the stage for the invigorating winds that typically return in September. This transitional calm serves as a lovely backdrop for enjoying the late summer days in Incheon.
Weather in Incheon varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Incheon, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present strikingly different weather patterns. In August, temperatures range from a minimum of 17°C (63°F) to a scorching maximum of 36°C (97°F), with an average of 27°C (80°F). This month is also characterized by high humidity at 91% and substantial rainfall, totaling 256 mm (10.1 in) over about 15 days. In contrast, January's weather features a stark drop in temperature, with lows reaching -16°C (3°F) and highs peaking at just 12°C (54°F), averaging -2°C (29°F). Precipitation is minimal in January, measuring only 17 mm (0.7 in) across a mere 2 days, and the humidity is lower at 71%. For more detailed insights, you can check Incheon weather in January.
August and February present striking contrasts in weather. August boasts warmer temperatures, ranging from a minimum of 17°C (63°F) to a scorching maximum of 36°C (97°F), with an average of 27°C (80°F). The month is also characterized by high humidity at 91% and significant rainfall, totaling 256 mm (10.1 in) over approximately 15 days. In stark contrast, February features much colder conditions, with temperatures dipping as low as -14°C (6°F) and averaging around 0°C (32°F), peaking at a comfortable 15°C (59°F). Additionally, February experiences minimal precipitation of just 21 mm (0.8 in) over only 4 days and has lower humidity at 65%. For more specific insights, you can check out Incheon weather in February.
August offers a warm and humid climate, with temperatures ranging from a minimum of 17°C (63°F) to a scorching maximum of 36°C (97°F) and an average of 27°C (80°F). This month also sees a significant amount of rainfall, with precipitation totaling 256 mm (10.1 in) over 15 days, resulting in high humidity levels of 91%. In contrast, March experiences much cooler temperatures, with a minimum of -6°C (21°F) and a maximum of 19°C (66°F), averaging just 6°C (44°F). The precipitation in March is significantly lower, totaling 44 mm (1.7 in) over only 5 days, and the humidity is also more comfortable at 65%. For those interested in more detailed weather information, check out Incheon weather in March.
When comparing the weather in August and April, it's clear that August is characterized by significantly higher temperatures and humidity levels. In August, the average temperature reaches a warm 27°C (80°F) with maximums soaring to 36°C (97°F), while April offers a much cooler climate with averages around 12°C (54°F) and maximums of 25°C (78°F). Additionally, August experiences frequent rainfall, with precipitation occurring on 15 days and totaling 256 mm (10.1 in), contrasted with April's milder weather, which sees only 49 mm (1.9 in) of rain over 6 days. The humidity in August peaks at an oppressive 91%, while April maintains a more comfortable 75%. For more details on April's weather, you can visit Incheon weather in April.
August weather is significantly warmer and more humid compared to May, with average temperatures soaring to 27°C (80°F), peaking at 36°C (97°F). In contrast, May features cooler temperatures with an average of 17°C (63°F) and a maximum of 28°C (82°F). Additionally, August experiences higher precipitation, with 256 mm (10.1 in) over 15 days, whereas May sees considerably less rain at 107 mm (4.2 in) across 8 days. The humidity also rises in August to 91%, compared to 81% in May. For more details, you can check Incheon weather in May.
In comparing the weather between August and June, August presents a much warmer climate with average temperatures reaching 27°C (80°F), peaking at 36°C (97°F), while June's averages are cooler at 22°C (71°F) with maximums around 31°C (88°F). Additionally, August experiences significantly more precipitation, totaling 256 mm (10.1 in) over 15 days, compared to June's 77 mm (3.0 in) over 9 days. The humidity levels are also slightly higher in August at 91%, compared to June's 85%. For more details, you can check Incheon weather in June.
In comparing the weather between July and August, both months exhibit high humidity levels of 91%, making them equally sultry. However, August tends to be slightly warmer, with average temperatures reaching 27°C (80°F), compared to July's average of 26°C (78°F). Additionally, August experiences a greater range of temperatures, with maximums hitting 36°C (97°F), while July's peak is a bit lower at 35°C (95°F). Precipitation also increases slightly in August, totaling 256 mm (10.1 in) over 15 days, compared to July's 232 mm (9.1 in) over 14 days. For more detailed information on July weather, you can refer to Incheon weather in July.
August and September present a noticeable contrast in weather patterns. August features warmer temperatures, with averages around 27°C (80°F) and maximums soaring up to 36°C (97°F), alongside high humidity levels at 91%. Precipitation is also significant, with 256 mm (10.1 in) of rain over 15 days. In contrast, September sees a drop in average temperatures to 22°C (72°F), with maximums reaching 31°C (87°F) and minimums at 11°C (53°F). Rainfall decreases to 133 mm (5.2 in) over just 9 days, and humidity levels also fall to 77%. For more detailed information, consider checking Incheon weather in September.
August and October present strikingly different weather patterns. In August, temperatures soar, with a minimum of 17°C (63°F), an average of 27°C (80°F), and highs reaching up to 36°C (97°F). The month is also quite wet, with 256 mm (10.1 in) of rain over 15 days and a high humidity level of 91%. In contrast, October cools down significantly, featuring a minimum temperature of 2°C (36°F), an average of 15°C (60°F), and a maximum of 28°C (82°F). The precipitation drops to 59 mm (2.3 in) over just 6 days, accompanied by lower humidity at 79%. For more details, check out Incheon weather in October.
August weather is characterized by high temperatures, with averages reaching up to 27°C (80°F) and maximums soaring to 36°C (97°F). The month is also marked by significant precipitation of 256 mm (10.1 in) across 15 days, resulting in high humidity levels of 91%. In stark contrast, November brings much cooler temperatures, with averages around 8°C (47°F) and maximums peaking at 21°C (69°F). The precipitation drops significantly to 53 mm (2.1 in) over just 5 days, accompanied by a more comfortable humidity level of 80%. For a detailed overview of November weather, you can visit Incheon weather in November.
August and December present starkly contrasting weather conditions. In August, temperatures soar with a minimum of 17°C (63°F), an average of 27°C (80°F), and a maximum that can reach up to 36°C (97°F). The month is characterized by high humidity at 91% and considerable rainfall, totaling 256 mm (10.1 in) over about 15 days. In sharp contrast, December features a much colder climate, with temperatures plummeting to a minimum of -14°C (7°F) and an average of 0°C (33°F), peaking at just 12°C (54°F). Precipitation in December is minimal, with only 24 mm (0.9 in) occurring over 5 days and humidity dropping to 74%. For more details, you can check Incheon weather in December.
August in Incheon stands out as a hot and humid month, characterized by high temperatures and significant rainfall. With an average temperature hovering around a balmy 27°C, residents and visitors experience the peak of summer heat, often witnessing maximums soaring to 36°C. The month is also marked by intense humidity, reaching levels of 91%, creating a sultry atmosphere that can make the warm days feel even hotter. Additionally, the city faces considerable precipitation, with rainfall occurring on about half of the days in August. This combination of factors makes August notably more oppressive compared to other months, as the city transitions towards the cooler, drier days of autumn. For more detailed insights on Incheon’s weather patterns, check out Incheon Climate.