Last updated: October 30, 2025
In September, Changwon, South Korea experiences a captivating blend of warm days and refreshing rain, with maximum temperatures reaching up to 30°C (87°F) and an average of 22°C (72°F). The month brings a minimum of 12°C (53°F), creating comfortable conditions for outdoor activities. However, be prepared for the rain, as precipitation totals 232 mm (9.1 in) over 11 days, contributing to a humidity level of 80% that enhances the lush, green landscapes typical of this time of year. Whether you are exploring the city or enjoying nature, September offers a vibrant backdrop for unforgettable experiences.
In September, Changwon experiences a delightful transition from the sweltering summer heat to the mild embrace of autumn. Temperatures typically range from a pleasant 12°C (53°F) at night to a comfortable 30°C (87°F) during the day, with an average of 22°C (72°F). This month marks a significant drop from the intense summer highs, offering a more refreshing climate perfect for outdoor activities. The gradual cooling sets the stage for a serene landscape as the leaves begin to change, making it an ideal time for both locals and visitors to explore the city's natural beauty and vibrant culture. As September unfolds, the inviting temperatures are sure to enhance the experience of this charming South Korean city.
In September, Changwon, South Korea, experiences a notable uptick in precipitation, totaling 232 mm (9.1 in) over approximately 11 days of rain. This marks a continuation of the monsoon season, building upon the heavy summer rains that peak in July with 258 mm (10.2 in). The rainfall in September is significant but slightly reduced compared to the previous month, August, which brings 190 mm (7.5 in) in rain over the same number of days. As the month progresses, the shift toward drier conditions becomes evident, foreshadowing the lighter rainfalls typical of October and beyond. Overall, September sets the stage for a transition, with its substantial precipitation helping to replenish local water sources as the region prepares for cooler, drier months ahead.
In September, Changwon experiences a noticeable dip in humidity levels, dropping to 80% after the sweltering heat of summer. This month marks a transition as the air begins to feel more comfortable following the peak humidity of 95% in July and 93% in August. The slight reduction in humidity not only alleviates the summer's oppressive warmth but also signals the approach of autumn, when humidity gradually continues to decline into the following months. Overall, the humidity patterns in Changwon highlight the region's shift from the humid summer months towards the more temperate conditions of early fall, creating a refreshing change for residents and visitors alike.
As summer fades, September in Changwon, South Korea, maintains a very high UV Index of 10, requiring just 15 minutes of exposure before risking sunburn. This month marks a slight decline from the peak levels of 12 observed in July and August but still emphasizes the importance of sun protection. Compared to earlier months, such as April and May, where the UV Index also reached 10, September's warmth signals a transition toward milder autumn days, while still demanding vigilance against harmful rays. As you enjoy the beautiful weather, remember to stay protected. For more information, check the full details on the Changwon UV Index.
UV Risk Categories
As the warm embrace of September settles over Changwon, South Korea, the city enjoys an average of 241 hours of sunshine, making it a delightful precursor to the crisp autumn days ahead. Although this sunshine count dips compared to the height of summer in August, which boasts a vibrant 290 hours, it remains in line with reliable patterns observed throughout the year. As summer transitions into autumn, September still holds onto a generous amount of sun, serving as a reminder of the warmth that lingers before the cooler months arrive. This gradual decline in sunshine hours is part of a broader trend that sees daylight gradually diminishing, yet September retains a charm that keeps it vibrant and engaging for both locals and visitors alike.
In September, Changwon, South Korea experiences a 30% chance of sunny weather, reflecting a slight increase from the summertime lows of July and August, which plummet to 19% and 26% respectively. This moderate likelihood indicates a shift as the region transitions into autumn, providing a refreshing change from the earlier months marked by more overcast skies. While September's sunshine percentage is still lower than the annual averages seen in January (59%) and October (55%), it suggests a gentle move towards clearer days as the year progresses. This trend highlights Changwon's variable weather patterns, offering a blend of sunny opportunities amidst the softening warmth of early fall.
In Changwon, South Korea, September marks a transition into autumn with a daylight duration of 12 hours. Following the peak of summer in June, July, and August—each basking in 14 hours of sunlight—September witnesses a gradual decrease in daylight as the days begin to shorten. This change signals the approach of cooler weather, as October further dips to 11 hours. The trend from early spring, which starts at 11 hours in March and peaks at 14 hours in May, reflects the dynamic rhythm of the seasons, with daylight intensifying in the warmer months and receding as the year winds down. By December, daylight dwindles to just 9 hours, offering a stark contrast to the abundant sunlight enjoyed just months prior.
As September arrives in Changwon, South Korea, the gentle breeze of autumn begins to stir, with an average wind speed of 3.0 m/s (7 mph). This slight uptick from the calm of summer months—where winds were typically around 2.5 m/s (6 mph)—marks a refreshing transition into the fall season. Historically, September's winds mirror the swift yet soft whispers of the spring months, reminding residents that the changes of nature are ever-present. As the air cools and the foliage changes, the subtle increase in wind speed offers a delightful reminder of the shifting seasons, inviting all to embrace the crispness that lies ahead.
Weather in Changwon varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Changwon, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present striking contrasts in weather conditions. In September, temperatures range from a mild 12°C (53°F) at night to a warm average of 22°C (72°F) during the day, peaking at 30°C (87°F). This month also experiences significant rainfall, with 232 mm (9.1 in) spread over 11 days and a high humidity level of 80%. In contrast, January's climate is much colder, with temperatures dipping between -11°C (13°F) and a maximum of 16°C (61°F), averaging just 2°C (36°F). Precipitation is minimal, totaling only 29 mm (1.1 in) over just 3 days, and humidity levels drop to 72%. For a closer look at January's weather in Changwon, you can visit Changwon weather in January.
In September, the weather is characterized by milder temperatures, with minimums around 12°C (53°F), average highs of 22°C (72°F), and maximums reaching up to 30°C (87°F). The month experiences significant rainfall, totaling 232 mm (9.1 in) over roughly 11 days, accompanied by high humidity levels of 80%. In contrast, February brings much colder conditions, with minimum temperatures dropping to -9°C (16°F) and an average of 4°C (40°F). The maximum temperature can reach a similar high of 22°C (72°F), yet overall, February is considerably drier, receiving only 38 mm (1.5 in) of precipitation across just 4 days and lower humidity at 67%. For more details on February weather, you can check Changwon weather in February.
In September, temperatures are notably warmer with a minimum of 12°C (53°F) and an average of 22°C (72°F), peaking at 30°C (87°F). However, this month is also characterized by high humidity levels of 80% and significant rainfall, with 232 mm (9.1 in) over 11 days. In contrast, March features much cooler temperatures, with a minimum of -3°C (28°F) and a maximum of 24°C (75°F), leading to an average of 9°C (49°F). Rainfall in March is considerably lower, totaling just 86 mm (3.4 in) over 8 days and accompanied by a more comfortable humidity level of 65%. For more detailed information, you can check Changwon weather in March.
In comparing the weather of September and April, we can see notable differences. September experiences a warmer climate with average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 30°C (87°F), while April has a cooler average temperature, peaking at 26°C (80°F) but starting as low as 1°C (33°F). Additionally, September is much wetter, with precipitation measuring 232 mm (9.1 in) over 11 days compared to April's 93 mm (3.7 in) spread across just 6 days. Humidity levels are also slightly higher in September at 80%, compared to April's 75%. For more detailed information on April weather, check out Changwon weather in April.
When comparing the weather in September and May, several key differences stand out. September tends to be warmer overall, with average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 30°C (87°F), compared to May, where temperatures range from a minimum of 6°C (43°F) to a maximum of 33°C (92°F). Despite May having the potential for higher maximum temperatures, September experiences significantly more rainfall, with 232 mm (9.1 in) of precipitation over 11 days, whereas May has only 96 mm (3.8 in) over 9 days. The humidity levels are slightly lower in September at 80% compared to May's 83%. For more detailed information on May weather, check out Changwon weather in May.
In comparing the weather of September and June, both months exhibit similar average temperatures around 22°C (72°F), but they diverge in several aspects. June typically boasts higher maximum temperatures, reaching up to 34°C (93°F), compared to September's peak of 30°C (87°F). Additionally, June experiences slightly less precipitation, with 162 mm (6.4 in) over 10 days, while September is wetter with 232 mm (9.1 in) of rain over 11 days. Humidity levels are also higher in June at 87%, compared to September’s 80%. For a detailed look at weather conditions during June, you can visit Changwon weather in June.
When comparing the weather in September to that of July, notable differences emerge. September experiences a cooler temperature range with minimums around 12°C (53°F) and maximums peaking at 30°C (87°F), averaging 22°C (72°F). In contrast, July is significantly warmer, with minimums at 17°C (63°F) and maximums often reaching 35°C (96°F), averaging 26°C (78°F). Furthermore, both months see significant rainfall, with September receiving 232 mm (9.1 in) over 11 days and July slightly wetter at 258 mm (10.2 in) across 15 days. Additionally, humidity is notably higher in July at 95% compared to September's 80%. For more detailed insights, you can check Changwon weather in July.
In comparing the weather between September and August, September experiences a noticeable drop in temperature, with average highs around 30°C (87°F) compared to August's peak of 37°C (98°F). While September's minimum temperature begins at a cooler 12°C (53°F), August starts at a warmer 17°C (63°F). Additionally, September sees higher overall precipitation, with 232 mm (9.1 in) falling over 11 days, whereas August has 190 mm (7.5 in) spread across 15 days. The humidity levels also shift slightly, with September at 80% compared to August's 93%, indicating a less muggy environment as summer transitions into fall. For more detailed information on August weather, visit Changwon weather in August.
September and October present a noticeable shift in weather patterns. September boasts a warmer climate, with average temperatures around 22°C (72°F) and maximums reaching up to 30°C (87°F), alongside significant rainfall of 232 mm (9.1 in) over 11 days, contributing to a humid atmosphere at 80%. In contrast, October sees cooler temperatures, with averages dropping to 17°C (62°F) and minimums dipping to 4°C (39°F). The precipitation also decreases significantly to 97 mm (3.8 in), occurring on just 6 days, and humidity levels slightly fall to 77%. For more details on the October weather, you can visit Changwon weather in October.
September weather typically showcases warmer temperatures, with averages around 22°C (72°F) and highs reaching up to 30°C (87°F). The month experiences considerable rainfall, with about 232 mm (9.1 in) spread over 11 days and a high humidity level of 80%. In contrast, November brings a significant chill, with minimum temperatures dipping to -2°C (30°F) and average temperatures around 10°C (51°F). The precipitation drops dramatically to 23 mm (0.9 in) over just 3 days, and humidity levels decrease slightly to 75%. For more specific details on November conditions, check out Changwon weather in November.
In September, the weather is generally warm, with average temperatures ranging from a mild 12°C (53°F) at night to a comfortable 30°C (87°F) during the day, accompanied by high humidity levels of 80%. However, this month also sees a significant amount of rainfall, averaging 232 mm (9.1 in) over approximately 11 days. In contrast, December brings a stark transformation, with much colder temperatures ranging from a low of -8°C (18°F) to a high of 18°C (65°F) and a considerable drop in precipitation, only 20 mm (0.8 in) over 3 days. The humidity also decreases to 73%, making December feel quite crisp compared to the balmy September climate. For more detailed weather information, you can visit Changwon weather in December.
As September unfolds in Changwon, the weather offers a refreshing reprieve from the hot summer months. With average temperatures settling around a comfortable 22°C (72°F), it creates a pleasant atmosphere perfect for outdoor activities. While you may experience increased humidity levels, the city's lush surroundings thrive. However, be prepared for rainy spells, as September averages around 11 days of precipitation, bringing a total of approximately 232 mm (9.1 in) of rain, making it one of the wetter months. This blend of warmth and moisture sets September apart from the drier summer weeks, ushering in a vibrant early autumn. For more insights into the weather patterns and climate specifics, check out Changwon Climate.