Last updated: October 30, 2025
In Goseong, South Korea, September brings a mix of warm temperatures and significant rainfall. The maximum daily temperature can reach a steamy 31°C (88°F), while the average settles at a comfortable 23°C (74°F). Mornings often start pleasantly cool, with minimums around 15°C (59°F). However, the month is characterized by substantial precipitation, totaling 238 mm (9.4 in) across 13 days. Relative humidity lingers at a high 80%, contributing to the lush landscape and vibrant atmosphere of the region. September is a transitional month, rich with the beauty of late summer and the promise of autumn.
In September, Goseong, South Korea, experiences a delightful transition towards autumn, marked by mild temperatures that create an inviting atmosphere. With a minimum of 15°C (59°F) and an average of 23°C (74°F), the days warm up pleasantly, peaking at a maximum of 31°C (88°F). This month showcases the gradual cool-down following the intense summer heat, as the scorching highs in July and August begin to fade. The weather is perfect for outdoor activities, inviting residents and visitors alike to savor the changing season amidst picturesque landscapes. Overall, September strikes a harmonious balance, offering both warmth and a hint of fall's approach.
In September, Goseong, South Korea, experiences a significant uptick in precipitation, with a remarkable 238 mm (9.4 in) of rainfall recorded over 13 days. This makes September one of the wettest months of the year, following the peak monsoon season in July, which sees 248 mm (9.7 in). The consistent rainfall during this time signals the transition into autumn, contributing to the region's lush landscapes. Interestingly, while rainfall decreases notably in October, the patterns established in September highlight the critical role of late summer rains in sustaining Goseong's environment leading into the cooler months.
In September, Goseong, South Korea, experiences a humidity level of 80%, which shows a notable decline from the sweltering summer months, where humidity peaked at 95% in July and remained high at 93% in August. This gradual decrease reflects the transition from the hot, muggy summer to the more temperate autumn season. However, the humidity is still relatively high when compared to the drier winter months, where levels drop to around 72% in January. Overall, September serves as a bridge between the intense moisture of summer and the crisp air that follows, making it a unique time to appreciate Goseong’s shifting climate.
As September arrives in Goseong, South Korea, the UV Index remains significant at 10, indicating a very high exposure category. This is a slight dip from the extreme levels seen in the peak summer months of July and August, where the UV Index reached 12. With a burn time of just 15 minutes, this month still calls for caution when basking under the sun. Interestingly, as we transition into autumn, the UV Index will gradually decrease further to 7 by October, marking a shift toward more moderate sun conditions. To ensure safety while enjoying the outdoors this September, remember to stay informed about the UV levels; for detailed insights, visit Goseong UV Index.
UV Risk Categories
As September unfolds in Goseong, South Korea, the sun continues to shine, offering an impressive 241 hours of sunlight—a notable transition from the summer's peak brilliance. Following the vibrant months of June and August, which basked in 290-plus hours of sunlight, September marks a gentle decline as the autumn chill begins to creep in. This month bridges the gap between the long sunny days of summer and the cooler months ahead, carving out a space where clear skies and mild temperatures create a perfect backdrop for outdoor adventures. While sunlight gradually diminishes into the fall, September still shines brightly in the annual cycle, reminding residents and visitors alike of the lingering warmth of summer.
In September, Goseong, South Korea, experiences a 32% chance of sunny weather, which is a slight uptick from the peak summer months of July and August, where the odds dip to 19% and 29% respectively. While this percentage suggests that sunny days are possible, they remain relatively modest compared to other months. Following the summer’s humidity, the likelihood of sunshine begins to improve, paving the way for clearer skies in October, where the chance rises significantly to 55%. Overall, September marks a transitional period, hinting at better weather to come while still feeling the lingering effects of summer's heat and unpredictability.
In Goseong, South Korea, September marks a transition in daylight duration, with the sun gracing the skies for approximately 12 hours each day. This month’s daylight is a gentle decline from the peaks of summer, where July and June enjoyed the longest days at 14 hours. Following the vibrant summer months, September signals a gradual shift towards autumn, as daylight dwindles to 12 hours, paving the way for October's further decrease to 11 hours. The rhythmic ebb and flow of daylight throughout the year in Goseong illustrates the progression of seasons, inviting residents and visitors alike to savor the lingering warmth of early fall before the shorter days of winter approach.
As September arrives in Goseong, South Korea, the winds pick up momentum, averaging 3.3 m/s (7 mph)—a notable increase that echoes the breezier conditions of the earlier spring months. This gentle uptick is a refreshing contrast to the calmer summer days, where wind speeds hovered around 2.5 to 2.9 m/s, providing a welcome shift for locals and visitors alike. September’s invigorating air heralds the transition into fall, mirroring the natural rhythm of the seasons. Following September, the winds tend to mellow again in October and November, stabilizing around 2.6 m/s—a reminder of winter's approach. Overall, the wind patterns in Goseong reflect a dynamic interplay between the lingering warmth of summer and the crisp enthusiasm of autumn, offering a delightful backdrop for outdoor activities and a deeper connection to nature.
Weather in Goseong varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Goseong, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January weather present a stark contrast. In September, temperatures range from a minimum of 15°C (59°F) to a maximum of 31°C (88°F), with an average of 23°C (74°F). This month also experiences significant rainfall, with 238 mm (9.4 in) of precipitation spread over 13 days, contributing to a high humidity level of 80%. In contrast, January sees much colder weather, with temperatures dipping to a minimum of -11°C (13°F) and an average temperature of just 2°C (36°F), peaking at a maximum of 16°C (60°F). The precipitation drops dramatically to 27 mm (1.1 in) over just 3 days, and the humidity level is a bit lower at 72%. For more specific details, you can check Goseong weather in January.
September and February showcase stark differences in weather patterns. In September, temperatures range from a mild 15°C (59°F) at night to a warm 31°C (88°F) during the day, with an average temperature of 23°C (74°F). The month is also quite humid, with an average of 80% humidity and considerable precipitation of 238 mm (9.4 in) over 13 days, indicating a lush and wet environment.
In contrast, February experiences much cooler temperatures, with a minimum of -10°C (15°F) and a maximum of 19°C (66°F), resulting in an average of only 4°C (40°F). The precipitation is significantly lower at 31 mm (1.2 in) over just 3 days, and the humidity is reduced to 67%, creating a much drier atmosphere. For more detailed information, you can explore Goseong weather in February.
In comparing the weather of September and March, September is markedly warmer and more humid. With temperatures ranging from a minimum of 15°C (59°F) to a maximum of 31°C (88°F) and an average of 23°C (74°F), it offers a sultry atmosphere with a humidity level of 80%. Additionally, this month experiences considerable rainfall, totaling 238 mm (9.4 in) over about 13 days. In contrast, March presents a cooler climate, with temperatures ranging from 0°C (33°F) to 22°C (72°F) and an average of 10°C (51°F). Precipitation is significantly lower, at 74 mm (2.9 in) over just 7 days, accompanied by reduced humidity at 65%. For a closer look at how March weather unfolds, you can check Goseong weather in March.
September generally brings warmer weather compared to April, with average temperatures reaching around 23°C (74°F) and maximums climbing to 31°C (88°F). In contrast, April experiences cooler conditions, with an average temperature of 15°C (59°F) and highs of 24°C (75°F). Additionally, September is significantly wetter, recording about 238 mm (9.4 in) of precipitation over 13 days, while April sees only 87 mm (3.4 in) of rainfall over just 6 days. Humidity levels in September are higher at 80%, compared to 75% in April. For more detailed information on the weather in April, you can check Goseong weather in April.
When comparing September and May weather, one can observe notable differences in temperature, precipitation, and humidity. September boasts a wider temperature range with a minimum of 15°C (59°F), reaching an average of 23°C (74°F) and peaking at 31°C (88°F). In contrast, May starts cooler, with minimum temperatures around 11°C (51°F) and an average of 19°C (67°F), maxing out at 30°C (86°F). Additionally, September experiences significantly higher precipitation, with 238 mm (9.4 in) falling over 13 days, while May records only 102 mm (4.0 in) over 6 days. Humidity levels are fairly similar, at 80% in September and 83% in May, making both months feel somewhat humid. For more detailed information on the weather in May, you can check Goseong weather in May.
In comparing the weather of September and June, both months feature similar average temperatures, with June presenting a slightly warmer minimum temperature of 16°C (62°F) compared to September's 15°C (59°F). However, September tends to reach higher maximum temperatures, averaging 31°C (88°F) against June's 30°C (86°F). Precipitation is significantly higher in September, with 238 mm (9.4 in) falling over 13 days, while June experiences only 162 mm (6.4 in) across 8 days. Humidity levels are slightly lower in June at 87%, compared to September's 80%. For a more detailed look at June weather, visit Goseong weather in June.
In comparing the weather between July and September, July tends to be hotter with average temperatures reaching around 26°C (79°F) and maximums soaring to 36°C (97°F). In contrast, September sees slightly cooler weather, averaging 23°C (74°F) with maximums of 31°C (88°F). Both months experience significant precipitation, with July recording 248 mm (9.7 in) over 15 days and September slightly lower at 238 mm (9.4 in) across 13 days. Humidity levels also differ, being more intense in July at 95% compared to 80% in September. For a detailed look at July weather, you can check Goseong weather in July.
In September, the weather begins to transition into cooler temperatures, with a minimum of 15°C (59°F) and an average high of 31°C (88°F), compared to August's warmer averages, which include a minimum of 21°C (70°F) and a peak of 37°C (98°F). While September experiences more rainfall, totaling 238 mm (9.4 in) over 13 days, August also sees substantial precipitation at 157 mm (6.2 in) but spans a longer period of 16 days. Additionally, September's humidity is slightly lower at 80%, compared to the higher 93% humidity levels of August. For a closer look at climate specifics, visit Goseong weather in August.
In September, the weather is characterized by warmer temperatures, with a minimum of 15°C (59°F) and a maximum of 31°C (88°F), making it feel quite summery. However, this month also brings significant rainfall, averaging 238 mm (9.4 in) over 13 days, along with high humidity levels of 80%. In contrast, October sees a notable drop in temperatures, with averages ranging from a minimum of 6°C (43°F) to a maximum of 29°C (84°F). Precipitation significantly decreases to 95 mm (3.7 in) across just 5 days, and humidity is slightly lower at 77%. The transition from September to October brings a shift towards cooler and drier conditions. For more specific insights on the weather in October, you can check out Goseong weather in October.
September and November exhibit striking contrasts in weather patterns. In September, temperatures range from a minimum of 15°C (59°F) to a maximum of 31°C (88°F), with an average of 23°C (74°F). This month also experiences significant rainfall, totaling 238 mm (9.4 in) over 13 days, coupled with high humidity levels of 80%. In comparison, November sees much cooler temperatures, with a minimum of 1°C (34°F) and an average of 11°C (52°F), while the maximum reaches 23°C (73°F). Rainfall is minimal in November, amounting to just 21 mm (0.8 in) over only 2 days, and humidity slightly decreases to 75%. For more details on November weather, you can check Goseong weather in November.
In September, the weather is notably warmer, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 31°C (88°F) and an average of 23°C (74°F). The month is also characterized by high humidity at 80% and significant rainfall, receiving 238 mm (9.4 in) over 13 days. In stark contrast, December experiences much colder temperatures, with a minimum of -7°C (20°F) and a maximum of 17°C (63°F), averaging just 4°C (39°F). Precipitation drops dramatically to 19 mm (0.8 in) over only 3 days, and humidity decreases to 73%. For more detailed information about December weather, check out Goseong weather in December.
As September unfolds in Goseong, the weather ushers in a transition that sets it apart from the sweltering summer months. With a comfortable average temperature of 23°C, visitors can enjoy the pleasant warmth without the extreme heat that characterizes July and August. However, this month also brings a notable increase in precipitation, with rain gracing the area for over half the month, adding to the lush landscape. The high humidity level of 80% can make it feel a bit sticky, yet it also enhances the vibrant colors of autumn on the horizon. For those planning a trip, understanding the unique nuances of September's climate can be essential in making the most of your visit. Dive deeper into Goseong's weather patterns by visiting Goseong Climate.