Last updated: October 30, 2025
September in Gangneung, South Korea, offers a blend of mild temperatures and substantial rainfall, creating a unique atmosphere for visitors. With maximum temperatures reaching up to 28°C (83°F) and an average of 18°C (65°F), the days are pleasantly warm, while evenings cool down to a refreshing 8°C (48°F). This month sees an average precipitation of 205 mm (8.1 in) spread across approximately 13 days, making it one of the wetter periods of the year. Coupled with a notable humidity level of 77%, September provides a lush and vibrant backdrop, perfect for exploring the natural beauty and cultural offerings of this coastal gem.
In September, Gangneung, South Korea, experiences a delightful transition as summer gives way to the crispness of autumn. The temperatures reach a minimum of 8°C (48°F) and an average of 18°C (65°F), while peaking at a comfortable 28°C (83°F). This month marks a shift from the steamy summer highs of the previous months, creating a perfect backdrop for outdoor activities and scenic vistas. As the days cool down, the vibrant fall foliage begins to emerge, inviting both locals and tourists to embrace the pleasant conditions and immerse themselves in the natural beauty that surrounds this coastal city.
September in Gangneung, South Korea, showcases a notable transition in rainfall patterns as summer wanes. With 205 mm (8.1 in) of precipitation over 13 days, it follows closely behind the deluge of the preceding months, July and August, which exhibit record highs of 243 mm (9.6 in) and 246 mm (9.7 in) respectively. This shift indicates a gradual decrease in humidity, yet still provides ample moisture as the region begins to embrace fall. Compared to earlier months, September's precipitation underscores a steady decline from the peak of summer, laying the groundwork for the dryer months ahead, with October showing a further reduction to 132 mm (5.2 in). The remnants of summer’s intense rain continue to influence the landscape, painting a picture of a region rich in seasonal contrast.
In September, Gangneung experiences a notable shift in humidity as summer transitions to autumn. With an average humidity of 77%, the air remains relatively moist, though it marks a decline from the sweltering highs of 91% seen in July and August. This decrease introduces a more comfortable atmosphere, making outdoor adventures more enjoyable. Overall, September's humidity illustrates a gradual tapering off in moisture levels as the year progresses, following the trend of increasing humidity from the start of the year until the peak summer months. As temperatures begin to cool, the change in humidity sets the stage for a delightful fall season in this coastal city.
As summer fades into fall, September in Gangneung, South Korea, presents a notable shift in solar exposure. The UV Index settles at a very high level of 10, indicating that while the harshest rays of summer recede, caution is still essential for sunbathers and outdoor enthusiasts alike. With a burn time of just 15 minutes, it’s a reminder to stay sun-safe. This month marks a transition from the peak summer extremes, which reached an astounding UV Index of 12 in August, to a more moderate yet potent sun exposure. Observing this trend, it's clear that while September brings cooler temperatures, the sun remains a significant force to reckon with. For more detailed insights, visit Gangneung UV Index.
UV Risk Categories
September in Gangneung, South Korea, is a charming transition month, basking in 250 hours of sunshine. While the days become shorter as autumn approaches, this figure reflects a gentle decline from the sun-drenched summer peak of 312 hours in June and 303 hours in May. Despite the drop, September maintains a vibrant glow, outshining the cooler months that follow, with October and November trailing at 248 and 235 hours, respectively. As nature shifts into its fall hues, September remains a delightful haven for sun-seekers, offering a final embrace of warmth before winter settles in.
September in Gangneung, South Korea, sees a 32% chance of sunny weather, a figure that aligns with the trend of dwindling sunshine as summer fades. Following the peak of summer, where the likelihood of sunny days drops to just 19% in August, September offers a slight rebound, providing a modest hope for clear skies. However, this percentage remains low compared to the sunnier months of winter, such as November and December, which boast chances of 63% and 64% respectively. As autumn approaches, sun seekers may need to temper their expectations, but the cool, crisp air can still make for enjoyable, albeit less sunny, days.
As autumn begins to embrace Gangneung, South Korea, September ushers in a gentle decline in daylight, offering about 12 hours of sunlit hours each day. This month marks a transition from the lush, long days of summer, where daylight peaked at 14 hours in June, July, and August, gradually tapering as the days shorten. The trend reveals a natural rhythm of brightness, where the increasing daylight from winter's mere 9 hours in January builds to spring and summer's warmth, before a subtle retreat begins again in September. This cyclical change sets the stage for the cozy embrace of autumn, inviting residents and visitors alike to savor the softer light and shifting seasons.
As September unfolds in Gangneung, South Korea, the wind begins to stir gently, averaging 2.3 m/s (5 mph). This slight increase from the summer's calmest months, particularly July's lull of 1.7 m/s (4 mph), marks a transition toward the more invigorating autumn breezes. Interestingly, the winds remain steady into October, holding at the same average speed, before picking up again in November and December, where they return to the season's stronger gusts at 3.7 m/s (8 mph) and 3.8 m/s (8 mph) respectively. This trend illustrates a gradual shift from the tranquil summer air to the renewed energy of the fall, inviting residents and visitors alike to embrace the seasonal change that dances through the coastal city.
Weather in Gangneung varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Gangneung, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January showcase stark contrasts in weather. In September, temperatures range from a mild 8°C (48°F) at night to a warm 28°C (83°F) during the day, with an average of 18°C (65°F). The month also experiences considerable rainfall, totaling 205 mm (8.1 in) over 13 days, and high humidity levels at 77%. In contrast, January plunges into the cold, with minimum temperatures dropping to a chilling -19°C (-2°F) and a maximum of only 9°C (49°F), resulting in an average temperature of -3°C (28°F). Precipitation is much lighter, at 40 mm (1.6 in), occurring over just 4 days, and humidity is slightly lower at 71%. For a detailed look at what to expect, check out Gangneung weather in January.
In comparing the weather between September and February, it's clear that the two months present starkly different climates. September boasts a mild temperature range, with minimums around 8°C (48°F) and maximums reaching 28°C (83°F), accompanied by significant precipitation of 205 mm (8.1 in) over 13 days, leading to a humidity level of 77%. In contrast, February is much colder, with temperatures plunging to a minimum of -17°C (1°F) and an average of -1°C (31°F), while maxing out at 16°C (62°F). The precipitation is considerably lower at 28 mm (1.1 in) over just 4 days, resulting in a lower humidity of 66%. For more detailed insights on February weather, you can visit Gangneung weather in February.
September and March present contrasting weather patterns. In September, temperatures range from a minimum of 8°C (48°F) to a comfortable average of 18°C (65°F), peaking at 28°C (83°F). This month also sees considerable precipitation, with 205 mm (8.1 in) falling over 13 days, accompanied by high humidity levels of 77%. In stark contrast, March experiences much colder temperatures, with a minimum of -12°C (10°F) and an average of just 5°C (42°F), though it can reach up to 20°C (69°F) on warmer days. Precipitation in March is notably lower at 85 mm (3.4 in) over 9 days, with a humidity level of 64%. For more details on the climate during this time, check out Gangneung weather in March.
When comparing the weather in September and April, significant differences are evident. September features a warmer climate, with average temperatures around 18°C (65°F) and highs reaching up to 28°C (83°F), while April's temperatures are cooler, averaging 11°C (51°F) with a maximum of 27°C (81°F). Humidity levels are slightly higher in September at 77%, compared to April's 74%. Additionally, September experiences more precipitation, with 205 mm (8.1 in) over 13 days, whereas April has only 94 mm (3.7 in) of rainfall spread over 9 days. For more detailed insights on April weather, you can check Gangneung weather in April.
In comparing the weather between September and May, it becomes clear that September tends to be warmer overall, with average temperatures reaching 18°C (65°F) and maximums soaring up to 28°C (83°F). In contrast, May experiences slightly lower temperatures, averaging 16°C (61°F) and peaking at 30°C (87°F), although its minimum temperature is a cooler 4°C (39°F). September also sees significantly more precipitation, with 205 mm (8.1 in) falling over 13 days, compared to May's 90 mm (3.5 in) over just 8 days. Humidity remains relatively similar in both months, with September at 77% and May slightly higher at 79%. For more detailed insights, you can visit Gangneung weather in May.
September weather typically features a broader temperature range, with minimums dropping to 8°C (48°F) and maximums reaching up to 28°C (83°F), leading to an average temperature of 18°C (65°F). In contrast, June experiences slightly warmer temperatures, with minimums at 9°C (49°F) and maximums hitting 31°C (87°F), resulting in an average of 20°C (67°F). Rainfall in September is significantly higher, with 205 mm (8.1 in) of precipitation over approximately 13 days, compared to June's more moderate 85 mm (3.3 in) over 10 days. Humidity levels are also slightly elevated in September at 77%, while June maintains a humidity of 82%. For more details on the weather during June, check out Gangneung weather in June.
In comparing the weather between September and July, September tends to be cooler, with average temperatures ranging from a minimum of 8°C (48°F) to a maximum of 28°C (83°F), while July experiences warmer temperatures, with a minimum of 13°C (57°F) and a maximum of 33°C (93°F). July also has higher humidity levels at 91%, compared to September's 77%, making it feel more oppressive during the peak summer month. Additionally, although September has slightly less rainfall, totaling 205 mm (8.1 in) over 13 days, July sees more precipitation at 243 mm (9.6 in) across 17 days, leading to wetter conditions. For more detailed information, you can check Gangneung weather in July.
In September, the weather sees a notable drop in temperature, with minimums of 8°C (48°F) compared to August's milder lows of 15°C (58°F). The average temperature in September is 18°C (65°F), significantly cooler than August's 23°C (75°F), and the maximum temperatures also decrease, with September reaching a high of 28°C (83°F) versus August's peak of 33°C (92°F). Precipitation is somewhat less in September at 205 mm (8.1 in), though it still occurs over 13 days, compared to August's higher total of 246 mm (9.7 in) over 20 days. Humidity remains high in both months, but August is slightly more humid at 91%, while September averages 77%. For a closer look at August weather specifics, check out Gangneung weather in August.
September and October present notable differences in weather patterns. In September, temperatures range from a minimum of 8°C (48°F) to a maximum of 28°C (83°F), with an average temperature of 18°C (65°F). The month also sees significant rainfall, accumulating 205 mm (8.1 in) over approximately 13 days, contributing to a humidity level of 77%.
In contrast, October experiences cooler conditions, with temperatures dipping to a minimum of 0°C (33°F) and an average of 12°C (55°F), while still reaching a high of 27°C (80°F). Rainfall decreases to 132 mm (5.2 in) over just 10 days, and humidity remains slightly higher at 78%. For more detailed insights on October weather, visit Gangneung weather in October.
September and November exhibit contrasting weather patterns, reflecting the transition from late summer to early winter. In September, temperatures range from a mild 8°C (48°F) at night to a warm 28°C (83°F) during the day, with an average of 18°C (65°F). The month is relatively wet, receiving 205 mm (8.1 in) of rainfall over 13 days, while humidity levels hover around 77%. In contrast, November brings a noticeable chill, with temperatures dropping to a minimum of -7°C (20°F) and peaking at 19°C (67°F), averaging just 6°C (44°F). Precipitation significantly decreases to 47 mm (1.9 in) over 6 days, and humidity remains slightly elevated at 80%. For detailed insights, you can check Gangneung weather in November.
September and December present markedly different weather conditions. In September, temperatures range from a mild minimum of 8°C (48°F) to a warm maximum of 28°C (83°F), with an average of 18°C (65°F). This month also experiences considerable rainfall, totaling 205 mm (8.1 in) over 13 days, accompanied by a high humidity level of 77%. In contrast, December sees temperatures plummet, with a minimum of -19°C (-3°F) and a maximum of just 13°C (55°F), yielding an average temperature of -1°C (31°F). Precipitation decreases significantly to only 21 mm (0.8 in) on just 3 days, and humidity remains relatively low at 76%. Such a stark contrast highlights the transition from the gentle warmth of early autumn to the harsh chill of winter. For more detailed information, check out Gangneung weather in December.
September in Gangneung marks a transition into autumn, bringing mild temperatures and increased humidity compared to the preceding summer months. As the heat of July and August begins to wane, average temperatures settle at a comfortable level, allowing for pleasant outdoor activities. However, this month also sees frequent rainfall, with several days contributing to overall precipitation that can lead to a lush landscape. The unique blend of warm days and cooler evenings, coupled with higher humidity, sets September apart from the drier and hotter summer months. For a deeper understanding of how these weather patterns compare throughout the year, check out Gangneung Climate.