Last updated: October 30, 2025
September in Ganghwa-gun, South Korea showcases a delightful early fall transition, with maximum temperatures reaching a warm 30°C (86°F) and an average temperature of 22°C (72°F). As the month progresses, nighttime brings cooler air, dipping to a minimum of 11°C (53°F). This period is characterized by moderate rainfall, with a total precipitation of 146 mm (5.7 in) spread over 8 days, and humidity levels approximately at 77%, creating a refreshing yet moist atmosphere. Overall, visitors can expect a blend of warm days and cool nights, perfect for enjoying the natural beauty and cultural experiences this picturesque region has to offer.
As September rolls in, Ganghwa-gun begins to experience a delightful transition from the sweltering summer to the cool embrace of autumn. With temperatures ranging from a minimum of 11°C (53°F) to a comfortable average of 22°C (72°F) and peaking at around 30°C (86°F), this month offers an inviting climate for outdoor activities. The gradual cooling trend is noticeable, signaling the end of the intense heat seen in July and August. This shift allows residents and visitors alike to enjoy the vibrant fall colors and changing landscapes without the oppressive humidity of summer, making it a perfect time to explore the region's natural beauty.
In September, Ganghwa-gun experiences a significant dip in rainfall compared to the preceding summer months, yet the precipitation remains notable at 146 mm (5.7 in) over 8 days. This marks a continued trend from the earlier monsoon season, characterized by high rainfall, particularly in July and August, which saw 204 mm (8.0 in) and 244 mm (9.6 in), respectively. As the region transitions into autumn, September's showers offer a softer touch, contributing to the lush landscape while hinting at the drier months ahead. This gradual decline in both precipitation quantity and frequency sets the stage for October's expected 56 mm (2.2 in), reinforcing the seasonal shift in Ganghwa-gun's climate.
As summer fades, September in Ganghwa-gun, South Korea, brings a noticeable shift in humidity levels, settling at 77%. This marks a decrease from the peak months of July and August, where humidity soared to 91%. The transition into autumn reveals a return to more comfortable conditions, yet September remains relatively humid compared to earlier months like January and February, which recorded 71% and 65% respectively. This gradual decline from the midsummer high suggests that while the oppressive humidity of summer eases, it retains enough moisture to hint at the lingering warmth of the season. As the months progress towards October, humidity begins to stabilize around 79%, indicating the ebb and flow of Ganghwa-gun's climate as it shifts into the cooler autumn months.
As we transition into September in Ganghwa-gun, South Korea, residents and visitors can expect a noteworthy UV Index of 9, indicating a very high exposure category, with a burn time of just 15 minutes. This marks a slight decrease from the extreme levels seen in July and August, which both peaked at a UV Index of 11, necessitating heightened sun protection. The trend throughout the summer showed a significant escalation in UV exposure, emphasizing the need for vigilance during outdoor activities. With October approaching, the index is projected to drop to 6, signaling a return to high exposure conditions. For detailed insights on sun safety and UV levels throughout the year, check the Ganghwa-gun UV Index.
UV Risk Categories
September in Ganghwa-gun, South Korea, brings a delightful blend of warmth and vibrant sunshine, with an impressive 265 hours of sunlight gracing the skies. This month marks a transition from the peak summer sun of 320 hours in June to the cooler embrace of autumn, creating a gentle decline that complements the changing seasons. Notably, September still enjoys substantial daylight compared to the earlier months, reflecting a summer that lingers joyfully into fall. As the days begin to shorted, the glorious light invites locals and visitors alike to revel in outdoor activities and the breathtaking landscapes that Ganghwa-gun has to offer.
In Ganghwa-gun, South Korea, the likelihood of enjoying sunny weather in September hovers around 43%, presenting a modest chance for sunshine as summer transitions into fall. This month's probability for clear skies shows a slight increase compared to the peak summer months of July and August, which dip to 34% and 35%, respectively. As the year progresses towards autumn, the chance of sunny days gradually rises, with October and November reflecting better odds at 46% and 61%. This trend suggests that while September may not be the sunniest month, it lays the groundwork for an improvement in weather, making it a pleasant time for outdoor activities and exploration.
In Ganghwa-gun, South Korea, September marks a gentle transition from the long, sunlit days of summer to the shorter daylight hours of autumn. With an average of 12 hours of daylight, this month reflects a noticeable decline from the 14 hours experienced during the peak of summer in June, July, and even August. As the days gradually shorten, the shift from vibrant summer to the mellow hues of fall becomes evident, creating a beautiful backdrop for outdoor activities. Following September, daylight will continue to retreat, dipping to 11 hours in October before settling at 10 hours in November, heralding the arrival of winter. Thus, September serves as a key pivot point in the daylight cycle, blending the essence of summer's warmth with the upcoming cooler months.
In September, Ganghwa-gun experiences a gentle breeze with an average wind speed of 3.0 m/s (7 mph), providing a refreshing ambiance as summer transitions into autumn. This slight uptick in wind speed compared to the more languid summer months indicates a subtle shift in the seasonal atmosphere. As temperatures begin to cool, the winds, which have generally been softer and slower during July and August, regain a bit of their vigor, reminiscent of the early spring months. This month’s winds, while not as brisk as those in the mid-year peaks, still contribute to the picturesque landscape, making it a perfect time for outdoor exploration amidst the breathtaking natural beauty of Ganghwa-gun.
Weather in Ganghwa-gun varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ganghwa-gun, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present drastically different weather conditions. In September, temperatures range from a mild 11°C (53°F) at night to a warm average of 22°C (72°F) and can peak at 30°C (86°F). The month also sees significant rainfall, with 146 mm (5.7 in) over about 8 days, and humidity levels hovering around 77%. In contrast, January experiences a stark drop in temperature, with a minimum of -17°C (2°F) and an average of -2°C (29°F), only reaching a maximum of 11°C (53°F). Precipitation is scarce, totaling just 18 mm (0.7 in) over 2 days, and humidity is lower at 71%. For more details about the weather in January, visit Ganghwa-gun weather in January.
September and February present stark contrasts in weather. September boasts warmer temperatures with a minimum of 11°C (53°F) and an average of 22°C (72°F), peaking at a comfortable 30°C (86°F). This month also experiences significant rainfall, averaging 146 mm (5.7 in) over about 8 days, coupled with high humidity at 77%. In contrast, February is much colder, with temperatures ranging from a chilly -14°C (7°F) to a max of 14°C (57°F) and an average of 0°C (32°F). Precipitation is minimal in February, totaling just 21 mm (0.8 in) over 3 days, and humidity drops to 65%. For more insights on February weather, visit Ganghwa-gun weather in February.
When comparing the weather in September and March, it’s clear that the two months present stark contrasts. September enjoys a warmer climate, with average temperatures ranging from a minimum of 11°C (53°F) to a maximum of 30°C (86°F), making it more conducive for outdoor activities. In contrast, March has a chillier atmosphere, with temperatures fluctuating between -6°C (21°F) and 18°C (65°F); the average temperature barely reaches 6°C (44°F). Precipitation levels are also different, as September experiences about 146 mm (5.7 in) spread over 8 days, while March has significantly less rain, totaling approximately 40 mm (1.6 in) over just 4 days. Furthermore, September's humidity is higher at 77%, compared to the more comfortable 65% in March. For more detailed information on March weather, you can refer to Ganghwa-gun weather in March.
When comparing the weather of September and April, significant differences emerge. September tends to be much warmer, with average temperatures ranging from a minimum of 11°C (53°F) to a maximum of 30°C (86°F). In contrast, April's temperatures are considerably cooler, beginning at a minimum of 0°C (33°F) and peaking at around 25°C (78°F). Additionally, September experiences higher precipitation levels at 146 mm (5.7 in) over about 8 days, while April's rainfall is relatively light at 49 mm (1.9 in) across 6 days. Humidity levels are quite similar, with September at 77% and April slightly lower at 75%. For more detailed insights on April's weather, you can visit Ganghwa-gun weather in April.
When comparing the weather in September and May, September generally offers warmer temperatures with a minimum of 11°C (53°F) and an average of 22°C (72°F), peaking at a maximum of 30°C (86°F). In contrast, May features cooler temperatures, starting with a minimum of 7°C (45°F), an average of 17°C (63°F), and a maximum of 28°C (83°F). Both months experience similar levels of precipitation, with September receiving about 146 mm (5.7 in) and May slightly less at 105 mm (4.1 in), each recording around 8 rainy days. However, September exhibits a slightly lower humidity at 77%, compared to May’s 81%. For more insights, visit Ganghwa-gun weather in May.
When comparing the weather in September to that of June, we observe some notable differences. September tends to have slightly cooler temperatures, with a minimum of 11°C (53°F) and a maximum of 30°C (86°F), while June starts warmer, with minimums around 14°C (57°F) and maximums reaching 33°C (92°F). Precipitation in September is significantly higher at 146 mm (5.7 in), compared to June's 73 mm (2.9 in), yet both months experience rain on about 8 days. Furthermore, humidity levels are high in both months, but June has a slightly higher average humidity at 85%, compared to September's 77%. For more details, you can check Ganghwa-gun weather in June.
In comparing the weather of September and July, notable differences emerge. September experiences milder temperatures, with a minimum of 11°C (53°F) and a maximum of 30°C (86°F), resulting in an average of 22°C (72°F). In contrast, July boasts warmer conditions, featuring a minimum of 18°C (65°F) and reaching highs of 35°C (96°F) and an average of 26°C (78°F). Additionally, July tends to be more humid at 91%, compared to September's 77%. Precipitation is also higher in July, with 204 mm (8.0 in) over 13 days, while September records 146 mm (5.7 in) across 8 days. For more details, visit Ganghwa-gun weather in July.
When comparing the weather in September to that of August, there are notable differences in both temperature and precipitation. September experiences a cooler range of temperatures, with a minimum of 11°C and a maximum of 30°C, leading to a more comfortable average of 22°C. In contrast, August is significantly warmer, characterized by a minimum of 16°C and soaring daytime highs of up to 36°C, resulting in an average temperature of 26°C. Additionally, September sees less rainfall, with 146 mm of precipitation over 8 days, while August is much wetter, experiencing 244 mm over 15 days. Humidity levels also drop from 91% in August to 77% in September, making the latter month feel more pleasant overall. For a more detailed look at August weather, you can check Ganghwa-gun weather in August.
In comparing the weather of September and October, we observe a significant drop in temperature as autumn takes hold. September boasts a minimum temperature of 11°C (53°F) and an average of 22°C (72°F), with highs reaching up to 30°C (86°F). The month also sees considerable precipitation at 146 mm (5.7 in) over 8 days, accompanied by a humidity level of 77%. In contrast, October experiences much cooler conditions, with a minimum temperature plummeting to 1°C (34°F) and an average of 15°C (59°F), while the maximum temperature is still fairly mild at 28°C (83°F). Rainfall decreases to 56 mm (2.2 in) over just 6 days, and humidity rises slightly to 79%. For further details, refer to Ganghwa-gun weather in October.
In September, the weather is warm and pleasant, with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 30°C (86°F) and an average of 22°C (72°F). The month also experiences significant rainfall, with 146 mm (5.7 in) of precipitation over 8 days, and humidity levels of 77% create a lush, vibrant atmosphere. In contrast, November ushers in much cooler temperatures, with a minimum of -6°C (21°F) and an average of 8°C (46°F). Although the maximum temperature can reach 20°C (69°F), the month sees only 45 mm (1.8 in) of precipitation over just 5 days and slightly higher humidity at 80%. For more detailed insights about November weather, visit Ganghwa-gun weather in November.
September and December present stark contrasts in weather characteristics. In September, temperatures range from a mild 11°C (53°F) at night to a warm 30°C (86°F) during the day, with an average of 22°C (72°F). This month also sees considerable rainfall, with 146 mm (5.7 in) of precipitation over approximately 8 days, contributing to a relatively high humidity level of 77%.
In contrast, December experiences much colder temperatures, dipping to a chilling minimum of -14°C (6°F) and averaging around 0°C (32°F), with a maximum of 12°C (54°F). Precipitation is significantly lower, at just 21 mm (0.8 in) over 5 days, and humidity decreases slightly to 74%. For a deeper look at weather specifics for Ganghwa-gun, you can visit Ganghwa-gun weather in December.
As September arrives in Ganghwa-gun, the weather begins to shift, bringing a delightful respite from the summer heat. With average temperatures settling around a comfortable 22°C (72°F), it's a month that gracefully balances warm days with cooler nights. The significant humidity of 77% and the occasional rain, totaling 146 mm over about 8 days, add a refreshing touch to the landscape, enhancing the rich colors of autumn. This transitional period makes September a unique month in Ganghwa-gun's climate, contrasting with the scorching summer and paving the way for the crispness of fall. For a deeper dive into the seasonal trends, check out the extensive insights at Ganghwa-gun Climate.