Last updated: October 30, 2025
September in Suncheon, South Korea, presents a delightful blend of warmth and moisture, as temperatures range from a pleasant 10°C (51°F) at night to a peak of 31°C (87°F) during the day, averaging around 21°C (71°F). This month sees significant rainfall, with a total precipitation of 241 mm (9.5 in) over approximately 14 days, contributing to a high humidity level of 80%. Visitors can expect a lush, vibrant landscape as the region transitions into autumn, offering a unique experience enriched by the combination of mild temperatures and the refreshing scents of nature's bounty.
In September, Suncheon, South Korea begins to transition from the sweltering heat of summer to the more temperate conditions of autumn. With a minimum temperature of 10°C (51°F) and an average of 21°C (71°F), it's pleasantly mild, making it an ideal time for outdoor activities. The maximum reaches 31°C (87°F), evidencing the lingering warmth of summer before crisp fall days take hold. This month showcases a notable trend of cooling temperatures, which precede the sharp dip into the chillier months of October and November. As the days progress, the delightful climate invites both locals and visitors to relish the vibrant landscapes of Suncheon, dotted with the early hues of autumn.
September brings a peak in rainfall in Suncheon, South Korea, with precipitation reaching 241 mm (9.5 in) over 14 days. This makes it one of the wetter months of the year, following a particularly intense rainy season during July and August. Compared to the preceding months, September's rainfall reflects a shift as the summer monsoon transitions into autumn, contributing significantly to the region's overall annual totals. As the humidity starts to wane, residents can expect a mix of cooler temperatures alongside these substantial downpours, making it a vibrant time for the region's lush landscape.
As summer fades into autumn, September in Suncheon, South Korea, sees a noticeable decline in humidity, settling at 80%. This marks a shift from the intense humidity of the peak summer months, where levels soared to an impressive 95% in July and remained high at 93% in August. The transition to September reflects a gradual cooling trend, with humidity dipping below the summer highs yet remaining elevated compared to the dryer months of late autumn. This decrease not only enhances the comfort of outdoor activities but also signals the onset of a more temperate season, creating a perfect backdrop for enjoying the rich natural beauty of Suncheon as it begins to transition into its stunning fall foliage.
In September, Suncheon, South Korea experiences a very high UV Index of 10, which means sun protection is essential for outdoor activities. As summer transitions to autumn, the UV levels show a slight decline from the extreme conditions of July and August, where the index peaked at 12. Despite this drop, the burn time remains relatively short at just 15 minutes, indicating that the sun is still powerful. Overall, September maintains a consistent pattern of high UV exposure following a summer marked by increasingly dangerous levels. To stay safe from the sun's rays, it’s important to plan accordingly and embrace protective measures. For more detailed information on UV exposure throughout the year, visit the Suncheon UV Index.
UV Risk Categories
As summer fades, September in Suncheon, South Korea welcomes a gentle shift in its sunshine hours, offering a balance of warmth and comfort with 237 hours of sunlight. This month marks a transition from the peak of summer, which boasted a vibrant 276 hours in August, to the cooler embrace of autumn. The trend illustrates a consistent yearly pattern, where sunlight gradually diminishes after the sun-soaked months of May and June, which lead the year with 296 and 288 hours, respectively. As October arrives, the sunshine picks up slightly again, allowing for a moderate 260 hours, suggesting that the region maintains a pleasant ambiance well into the fall. This rhythmic ebb and flow of daylight offers residents and visitors alike the perfect opportunity to embrace the natural beauty of Suncheon's changing seasons.
In September, Suncheon, South Korea experiences a moderate 28% chance of sunny weather, making it one of the more unpredictable months for sunshine. This figure ties with July and August, both of which reveal a trend of diminishing sunlight as the summer months transition to early fall. The likelihood of sunny days begins to pick up again in October, when it rises to 55%, signaling a change as autumn unfolds. Overall, September sits comfortably in the middle of the annual spectrum, hinting at possible clear skies but also reminding visitors to prepare for those cloudier days.
As September unfolds in Suncheon, South Korea, residents enjoy a pleasant 12 hours of daylight, marking a gentle transition from the long, sunlit days of summer. This month reflects a gradual tapering of daylight hours, following the peak of 14 hours in June and July. As autumn approaches, the daylight duration steadily declines, mirroring the shift in seasons where vibrant foliage begins to replace the lush greens of summer. This rhythm of daylight not only influences daily life in Suncheon but also sets the stage for cozy, shorter days ahead, as the landscape transitions into the rich hues of fall.
As September arrives in Suncheon, South Korea, the gentle breeze picks up slightly, with an average wind speed of 2.4 m/s (5 mph). This marks a subtle increase from the calm of summer, where wind speeds dipped to their lowest in August at 1.8 m/s (4 mph). The transition into fall hints at a more dynamic atmosphere, reminiscent of the earlier months of the year. Notably, January through April already saw stronger winds, averaging around 2.6-2.8 m/s (6 mph). As the year progresses, Suncheon experiences a gradual increase and then a minor dip in wind speeds, creating a rhythm that complements the changing seasons. This delicate balance in September fosters a serene yet invigorating environment, perfect for enjoying the beauty of autumn.
Weather in Suncheon varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Suncheon, focusing on differences in temperature, rainfall, humidity, and UV levels.
September is characterized by warm temperatures, ranging from a mild minimum of 10°C (51°F) to a scorching maximum of 31°C (87°F), with an average of 21°C (71°F). The month experiences significant rainfall, with 241 mm (9.5 in) over about 14 days, contributing to a high humidity level of 80%. In contrast, January brings a stark change, plunging temperatures down to a minimum of -16°C (4°F) and an average of just 1°C (34°F), peaking at 15°C (59°F). Precipitation in January is much lower at 32 mm (1.3 in) across only 3 days, with humidity at 71%. For more specific information, check Suncheon weather in January.
September and February present strikingly contrasting weather patterns. In September, temperatures range from a mild 10°C (51°F) to a warm 31°C (87°F), with an average of 21°C (71°F). This month also experiences significant precipitation, totaling 241 mm (9.5 in) over 14 days, coupled with high humidity levels of 80%. In contrast, February features much colder temperatures, with lows around -12°C (10°F) and an average of just 3°C (37°F), peaking at a maximum of 23°C (73°F). Rainfall is minimal in February, with only 37 mm (1.4 in) over just 4 days, and humidity levels are lower at 68%. For a closer look at February weather specifics, you can visit Suncheon weather in February.
When comparing the weather in September and March, it's clear that they present contrasting conditions. September enjoys warmer temperatures, with a minimum of 10°C (51°F) and an average of 21°C (71°F), peaking at a maximum of 31°C (87°F). However, it also sees significant precipitation, with 241 mm (9.5 in) falling over 14 days and humidity levels averaging 80%. In contrast, March is notably cooler, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 24°C (76°F), and an average of 8°C (47°F). The month experiences much less rainfall, totaling 87 mm (3.4 in) over just 7 days, along with lower humidity at 67%. For more information on this seasonal transition, you can check Suncheon weather in March.
September and April present starkly contrasting weather patterns. In September, temperatures range from a minimum of 10°C (51°F) to a maximum of 31°C (87°F), with an average of 21°C (71°F). This month experiences significant rainfall, totaling 241 mm (9.5 in) and spanning about 14 rainy days, coupled with high humidity levels of 80%. In contrast, April sees much cooler temperatures, with a minimum of -1°C (30°F), an average of 13°C (56°F), and a maximum of 27°C (82°F). The precipitation in April is much lower at 88 mm (3.5 in) over just 7 days, along with humidity slightly lower at 78%. For more specific details about April weather, you can visit Suncheon weather in April.
September and May exhibit distinct weather characteristics. September tends to be warmer, with average temperatures around 21°C (71°F), peaking at a maximum of 31°C (87°F). However, it also brings considerable rainfall, with 241 mm (9.5 in) over 14 days, contributing to a high humidity level of 80%. In contrast, May presents cooler conditions, with an average temperature of 18°C (65°F) and a maximum of 32°C (90°F), although it enjoys less precipitation, totaling 128 mm (5.0 in) over just 8 days, accompanied by slightly higher humidity at 85%. For more detailed insights on May's climate, check out Suncheon weather in May.
In comparing September and June weather, both months feature similar average temperatures, hovering around 21-22°C (71°F). However, September experiences a broader temperature range with a minimum of 10°C (51°F) and a maximum of 31°C (87°F), whereas June has a slightly warmer minimum of 12°C (53°F) and a peak at 32°C (90°F).
Precipitation levels are notably different, with September receiving 241 mm (9.5 in) over 14 days, contrasted with June's 185 mm (7.3 in) over just 10 days. Additionally, humidity is higher in June at 87%, compared to 80% in September. For more detailed insights, check Suncheon weather in June.
In comparing the weather conditions of September and July, September offers a more moderate temperature range, with a minimum of 10°C (51°F) and a maximum of 31°C (87°F), averaging around 21°C (71°F). This contrasts sharply with July, which experiences warmer temperatures, with a minimum of 17°C (63°F) and a peak reaching 35°C (95°F), averaging 25°C (77°F). Additionally, while September receives 241 mm (9.5 in) of precipitation over 14 days, July is wetter, with 305 mm (12.0 in) over 16 days, contributing to a higher humidity of 95% in July compared to September's 80%. For more detailed insights on July weather, you can check Suncheon weather in July.
In comparing the weather between September and August, September presents a noticeable drop in temperature, with a minimum of 10°C (51°F) compared to August's milder 17°C (63°F). The average temperature in September is 21°C (71°F), significantly cooler than August's 26°C (80°F), while the maximum temperatures also reflect this trend, reaching 31°C (87°F) in September as opposed to 35°C (95°F) in August. Precipitation levels are fairly similar, with September experiencing 241 mm (9.5 in) of rainfall over 14 days, slightly more than August's 238 mm (9.4 in) across 17 days. Additionally, September's humidity is lower at 80%, compared to August's higher level of 93%. For more details about August weather conditions, check out Suncheon weather in August.
In September, temperatures generally ranged from a minimum of 10°C (51°F) to a maximum of 31°C (87°F), with an average temperature of 21°C (71°F). The month was characterized by significant rainfall, totaling 241 mm (9.5 in) over 14 days, and high humidity levels at 80%. In contrast, October brings a notable drop in temperatures, with a minimum of 1°C (34°F) and an average of 16°C (60°F), peaking at 29°C (84°F). The precipitation also decreases sharply to 109 mm (4.3 in) over just 5 days, while humidity remains relatively low at 78%. For more details on the October weather conditions, you can check this link: Suncheon weather in October.
September and November exhibit strikingly different weather patterns. In September, temperatures range from a minimum of 10°C (51°F) to a maximum of 31°C (87°F), with an average of 21°C (71°F). The month is marked by significant rainfall, totaling 241 mm (9.5 in) over 14 days, and high humidity at 80%. In contrast, November ushers in cooler temperatures with lows dropping to -4°C (26°F) and an average of 9°C (48°F), while the daytime highs reach a milder 23°C (74°F). Precipitation significantly decreases to just 31 mm (1.2 in) across 3 days, with humidity slightly lower at 76%. This transition reflects the shift from a late-summer climate to a cooler, drier autumn. For more details, check Suncheon weather in November.
In September, the weather is warm and humid, with average temperatures hovering around 21°C (71°F) and highs reaching up to 31°C (87°F). During this month, Suncheon experiences significant rainfall, with precipitation of 241 mm (9.5 in) over 14 days, contributing to a humidity level of 80%. In stark contrast, December brings a much colder climate, with average temperatures dropping to 2°C (36°F) and nighttime lows plunging to -11°C (12°F). This winter month only sees about 24 mm (0.9 in) of precipitation across just 3 days, and humidity decreases slightly to 73%. For more details, you can visit Suncheon weather in December.
As summer gradually gives way to autumn, September in Suncheon showcases a delightful transition marked by milder temperatures and increased humidity. With daytime highs that still flirt with the warmth of summer, mornings and evenings bring a refreshing chill, making it an ideal time for outdoor activities. However, expect occasional rainfall throughout the month, as the region experiences a notable amount of precipitation spread over multiple days. This unique blend of warmth and moisture sets September apart from the hotter, drier summer months, offering a more comfortable and vibrant atmosphere. For more detailed insights into the weather patterns, check out Suncheon Climate.