Last updated: October 30, 2025
In September, Chungju, South Korea experiences a transition into autumn with an average temperature of 20°C (68°F). Daytime highs can reach a maximum of 29°C (85°F), while nights cool down to a minimum of 7°C (45°F). This month is characterized by significant rainfall, accumulating to 157 mm (6.2 in) over 9 days, contributing to a humidity level of 77%. As the season shifts, visitors can expect a mix of warm days and refreshing, crisp evenings, making it an ideal time to explore this beautiful region.
In September, Chungju, South Korea, transitions into a pleasantly mild climate as summer gives way to autumn. The temperatures begin to drop, with minimums around 7°C (45°F) and averages hovering at a comfortable 20°C (68°F). Daytime highs can still reach a balmy 29°C (85°F), making it an ideal time to enjoy outdoor activities without the sweltering heat of summer. This month marks a gentle shift, with cooler evenings hinting at the approaching fall, while still offering warm days that allow residents and visitors alike to savor the beauty of the changing season. As the leaves begin to turn, September in Chungju is a delightful blend of warmth and crispness, perfect for embracing the harvest season.
In September, Chungju, South Korea, experiences a substantial precipitation amount of 157 mm (6.2 in) over approximately 9 rainy days, marking a significant transition from the intense summer rains of July and August. This month typically sees a notable decline from the peak summer downpours, yet it remains one of the wetter periods of the year. Compared to earlier months, such as June (88 mm) and May (104 mm), September's rainfall showcases a shift towards cooler, wetter autumn conditions. The pattern reflects the region's typical climate progression, where the summer's relentless onslaught gives way to a more moderate, yet still moisture-rich environment, preparing Chungju for the crisp autumn ahead.
In September, Chungju, South Korea experiences a notable shift in humidity, averaging 77%. This marks a decline from the peak summer humidity levels of 91% seen in both July and August, signaling the transition into the more temperate autumn months. While September's humidity remains relatively high compared to the winter months, it reflects a gradual cooling trend that paves the way for the approaching fall. Interestingly, the humidity begins to stabilize, hovering in the mid-to-high seventies through October, before it returns to higher levels as winter draws near. This month serves as a bridge between the sultry heat of summer and the crispness of autumn, offering residents a brief respite from the peak moisture of summer while still feeling a hint of its lingering effects.
As September rolls into Chungju, South Korea, residents can expect a UV Index of 10, categorizing it as very high exposure. This marks a slight decline from the peak levels of 12 observed in August, but caution is still essential, with a burn time of just 15 minutes for fair-skinned individuals. Throughout the summer months, the UV index escalated dramatically, reaching extremes that necessitated vigilant sun protection. In comparison, the months ahead, particularly October, will see a notable drop to a UV Index of 7, indicating a shift toward more moderate sunlight exposure. These trends underscore the importance of adapting sun safety measures as we transition through the seasons. For more detailed insights on UV levels in this region, visit Chungju UV Index.
UV Risk Categories
In September, Chungju, South Korea, enjoys a bounty of sunshine, with 251 hours of bright, delightful days—just below the peak summer months. This slight dip from the robust 304 hours in May and 310 hours in June signals the transition into fall, where warm hues start to paint the landscape. The city's sunlit hours in September still outshine the cooler months like January and February, which struggle with just 199 and 239 hours, respectively. As autumn approaches, Chungju continues to bask in favorable sunshine, serving as a vibrant reminder of the summer's lingering warmth before the day's light yields to the chilly embrace of winter.
In Chungju, South Korea, the likelihood of sunny weather in September stands at a moderate 35%, which reflects a slight uptick in sunshine compared to the summer months of July and August, where the chances dip to 28% and 25%, respectively. This transitional month hints at a subtle shift toward clearer skies, yet still falls below the sunnier possibilities of late autumn, particularly in October with a 46% chance. With each passing month from the winter through to September, the overall trend highlights that as the year progresses, there remains a promising return to brighter days, especially as Chungju shifts gears into the fall season.
In Chungju, South Korea, the daylight duration showcases a rhythmic dance of seasons throughout the year. As September arrives, daylight @12 hours begins its gentle descent after a peak in the summer months, where the sun graced the city with a generous 14 hours of light from May to August. The transition into fall signals shorter days ahead, as daylight tapers off toward the 11 hours of October. This gradual reduction hints at the approaching winter months, where daylight lingers only 9 hours in January and December. The pattern not only emphasizes the warmth and vitality of summer but also invites a cozy embrace of autumn’s early evenings.
In September, the wind in Chungju, South Korea begins to awaken from the calmer summer months, averaging 2.2 m/s (5 mph). This slight increase signals a transition, as the gentle breezes are more noticeable after the languid July and August where winds hovered around 1.7 to 1.9 m/s. With autumn on the horizon, the September winds invite a refreshing change, setting the stage for the cooling temperatures and vibrant fall colors ahead. Throughout the year, wind speeds tend to fluctuate, peaking in the winter and early spring months, but September's modest rise offers a pleasant reminder of nature's shifting rhythms as it eases into the landscape of autumn.
Weather in Chungju varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Chungju, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is relatively mild with temperatures ranging from a chilly 7°C (45°F) at night to a warm 29°C (85°F) during the day, averaging around 20°C (68°F). The month sees significant rainfall, with 157 mm (6.2 in) of precipitation over 9 days and a humidity level of 77%. In contrast, January presents a starkly different climate, with temperatures plunging to a minimum of -18°C (-1°F) and a maximum of only 11°C (53°F), averaging about -2°C (28°F). Precipitation is much lower in this winter month, totaling just 23 mm (0.9 in) over 4 days, while humidity hovers at 71%. For more details on January’s weather, please visit Chungju weather in January.
The weather in September is marked by a wide temperature range, with a minimum of 7°C (45°F) and a pleasant average of 20°C (68°F), reaching a maximum of 29°C (85°F). However, it also features substantial precipitation, totaling 157 mm (6.2 in) over about 9 rainy days, resulting in a relatively high humidity of 77%. In contrast, February presents a starkly different climate, with much colder conditions—temperatures plummet to a minimum of -17°C (1°F) and an average of 0°C (32°F), peaking at 19°C (67°F). February sees significantly less rain, with only 33 mm (1.3 in) falling over 4 days and a lower humidity of 66%. For a deeper look into February weather specifically, refer to Chungju weather in February.
September and March display notable contrasts in weather patterns. In September, temperatures range from a minimum of 7°C (45°F) to a comfortable average of 20°C (68°F), peaking at a warm 29°C (85°F). This month experiences a considerable amount of rainfall, with 157 mm (6.2 in) over approximately 9 days, and humidity levels are relatively high at 77%. Conversely, March is much cooler, with temperatures dipping as low as -7°C (19°F) and averaging around 7°C (44°F), while peaking at a mild 21°C (71°F). Precipitation in March is also lower, totaling 64 mm (2.5 in) over just 6 days, accompanied by a lower humidity of 64%. For more details, you can view Chungju weather in March.
September and April present distinctly different weather patterns. September features warmer temperatures, with a minimum of 7°C (45°F) and an average of 20°C (68°F), peaking at a maximum of 29°C (85°F). In contrast, April starts cooler, with temperatures ranging from -3°C (26°F) to a maximum of 27°C (81°F) and an average of 12°C (53°F). While September experiences higher precipitation at 157 mm (6.2 in) over 9 days, April sees less rainfall, totaling 80 mm (3.2 in) across 7 days. Humidity levels are slightly higher in September at 77% compared to April's 74%. For a detailed look at April weather, you can refer to Chungju weather in April.
In September, the weather tends to be warmer with average temperatures around 20°C (68°F) and a maximum of 29°C (85°F), while May has a slightly cooler average of 17°C (63°F) and a peak temperature of 31°C (88°F). Both months experience similar humidity levels, with September at 77% and May at 79%. However, September sees more rainfall, with 157 mm (6.2 in) over 9 days compared to May's 104 mm (4.1 in) across the same number of days. For more detailed information on May's weather, check Chungju weather in May.
When comparing the weather in September and June, we see distinct differences in temperature and precipitation patterns. September typically has a minimum temperature of 7°C (45°F) and can reach a maximum of 29°C (85°F), averaging around 20°C (68°F). It also experiences higher precipitation at 157 mm (6.2 in) over 9 days, coupled with a humidity level of 77%. In contrast, June starts off warmer with minimum temperatures around 10°C (50°F) and peaks at 33°C (91°F), while averaging 21°C (71°F). Additionally, June has lower precipitation at 88 mm (3.5 in) spread over 8 days, and a slightly higher humidity of 82%. For more detailed information, you can check Chungju weather in June.
When comparing the weather of September and July, notable differences emerge in temperature and precipitation patterns. September typically experiences milder temperatures with a minimum of 7°C (45°F) and an average of 20°C (68°F), peaking at 29°C (85°F). In contrast, July is significantly warmer, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F) and an average of 25°C (76°F). Regarding precipitation, September sees less rainfall, totaling 157 mm (6.2 in) over about 9 days, compared to July's higher total of 242 mm (9.5 in) over 16 days. Additionally, July's humidity levels are higher at 91%, while September has a slightly lower humidity of 77%. For more detailed insights, check out Chungju weather in July.
In comparing the weather patterns of September and August, September exhibits a notable decrease in temperatures, with minimums dropping to 7°C (45°F) compared to August's minimum of 15°C (59°F). The average temperature in September is more moderate at 20°C (68°F), while August boasts a warmer average of 25°C (78°F) and can even peak at a sweltering 36°C (98°F). Rainfall is also reduced in September, with 157 mm (6.2 in) over 9 days, as opposed to August’s heavier precipitation of 264 mm (10.4 in) over 17 days. Additionally, September's humidity level of 77% is lower than August's 91%, making for a more comfortable atmosphere. For further details on August weather, you can visit Chungju weather in August.
In September, the weather features a pleasant average temperature of 20°C (68°F), with maximums reaching up to 29°C (85°F), while experiencing significant rainfall of 157 mm (6.2 in) over 9 days. The humidity remains relatively high at 77%. In contrast, October brings cooler temperatures, with an average of 14°C (57°F) and nighttime lows dropping to -1°C (30°F). Though the maximum temperature remains similar at 29°C (84°F), October sees a notable decrease in precipitation, totaling 71 mm (2.8 in) over just 5 days, while humidity slightly increases to 78%. For more detailed information, you can check Chungju weather in October.
September weather is characterized by a warm embrace, with temperatures ranging from a mild 7°C (45°F) at night to a high of 29°C (85°F) during the day. With an average temperature of 20°C (68°F) and 157 mm (6.2 in) of rainfall spread over 9 days, it showcases the transition from summer to autumn. In contrast, November brings a significant chill, with temperatures plummeting to a minimum of -7°C (20°F) and an average of just 7°C (44°F). While the maximum reaches up to 20°C (68°F), the overall sensation is much colder, and precipitation drops to 50 mm (1.9 in) over only 6 days. Interestingly, November also has slightly higher humidity at 80%. For more detailed insights on November weather, you can visit Chungju weather in November.
September and December showcase starkly contrasting weather patterns. In September, temperatures range from a mild 7°C (45°F) to a warm 29°C (85°F), with an average of 20°C (68°F). The month experiences significant rainfall, totaling 157 mm (6.2 in) over 9 days, and humidity levels hover around 77%. Conversely, December turns much colder, with temperatures plummeting to a minimum of -18°C (1°F) and peaking at 12°C (54°F), averaging -1°C (31°F). Rainfall is considerably less, at just 26 mm (1.0 in) over 5 days, while humidity remains relatively stable at 76%. For more details on December weather, you can visit Chungju weather in December.
As September unfolds in Chungju, the transition from summer to autumn is palpable. With warm temperatures lingering, the month showcases a delightful blend of sunny days and refreshing coolness, making it distinct from the sweltering heat of July and August. The increased humidity at 77% can bring occasional rain, contributing to the 157 mm of precipitation over about nine days, freshening the landscapes and enhancing the beauty of the region. This balance of warmth and moisture not only marks a shift in the weather patterns but also heralds the upcoming fall season. For a detailed overview of the weather throughout the year, explore Chungju Climate.