Last updated: October 30, 2025
September in Suwon, South Korea is characterized by a delightful blend of warmth and moisture, with average temperatures hovering around 22°C (71°F). The month can peak at a balmy 31°C (88°F), making it ideal for outdoor exploration, while nights may cool down to a refreshing low of 9°C (48°F). Rain is a frequent companion during this time, with 136 mm (5.4 in) of precipitation spread over 9 days, contributing to a humidity level of 77%, which adds a lush ambiance to the scenery. Visitors can expect a vibrant atmosphere filled with both sunshine and occasional showers, perfect for experiencing the charm of Suwon.
As September unfolds in Suwon, South Korea, the city transitions into a delightful autumn atmosphere. The temperatures begin to cool, with minimums dropping to around 9°C (48°F), providing a refreshing respite from the sweltering summer heat. Daytime averages hover at a comfortable 22°C (71°F), inviting outdoor explorations through the vibrant foliage. Peaks reach a pleasant 31°C (88°F), allowing for warm afternoons that still encourage people to enjoy the outdoors before the chill of fall sets in. This month marks a significant shift in the climate, setting the stage for cozy sweater weather and picturesque seasonal changes.
In September, Suwon experiences a notable shift in weather as rainfall peaks during the transition from summer to autumn. With a total precipitation of 136 mm (5.4 in) spread across 9 days, the month sees a substantial drop from the intense summer rains of July and August, which recorded 235 mm and 255 mm, respectively. This marked decrease signals a gradual shift, as September's rainfall is less than half of that from the previous two months, yet it remains significant compared to the drier months that follow. As the season progresses, the skies begin to clear, with October typically bringing just 62 mm (2.5 in) of rain over only 5 days. The varying precipitation patterns highlight the initial lingering effects of summer's moisture before autumn ushers in crisp, drier air.
In September, Suwon experiences a notable shift in humidity, averaging 77%. This marks a decline from the intense high of 91% seen in both July and August, as the summer heat starts to wane. While the humidity remains relatively high compared to the winter months, it reflects a transitional phase where the balmy summer air gradually gives way to cooler autumn breezes. Following September, humidity levels will fluctuate slightly, with October seeing a slight rise to 79%. Overall, the month serves as a bridge between the oppressive dampness of summer and the more moderate conditions that define the later fall season, illustrating the region's evolving climate patterns.
As September rolls into Suwon, South Korea, residents and visitors alike should prepare for a very high UV Index of 9, indicative of the lingering summer sun. This month follows the intense heat of July and August, both carrying an extreme UV index of 11, but now with a slight reprieve in burn time—only 15 minutes of unprotected sun exposure is enough to cause skin damage. Looking back at the trends from earlier months, there’s a clear escalation in UV levels as the year progresses, peaking during the peak summer months before tapering in October. As always, taking precautions against UV exposure remains essential; for more insights, visit Suwon UV Index.
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As September unfolds in Suwon, South Korea, residents enjoy an impressive 261 hours of sunshine, making it a delightful transition from the radiant summer months. Following a peak in May and June, where the city basked in 315 and 318 hours respectively, September showcases a gentle decline in sunlight, yet still outshines the earlier months of the year. This trend highlights a favorable stretch of sunny days, continuing the momentum of the summer while hinting at the cooler embrace of autumn. With the sun gradually waning, September offers a golden opportunity to savor the warmth before the shorter days set in, inviting both locals and visitors to revel in the lingering brilliance of the season.
As September rolls around in Suwon, South Korea, the chance of sunny weather hovers at 39%, which is slightly lower than the summer months of July and August, both known for their high humidity and frequent rain. This pattern suggests that while the oppressive heat of summer begins to wane, a fair amount of cloud cover still lingers, leading to a transitional period before the cooler autumn days set in. Interestingly, September's sunlight probability marks an uptick from the preceding months, hinting at a gradual return to clearer skies. In comparison to the winter months, which feature higher chances of sunshine later in the year, September serves as a bridge, where fleeting warm days can still surprise residents amid the shifting seasons.
In Suwon, South Korea, September marks a gentle transition from the long, sun-soaked days of summer to the cooler embrace of autumn. With approximately 12 hours of daylight, this month showcases a gradual decrease from the peak summer months of June to August, where sunlight reached 14 hours. As the seasons shift, September’s daylight reflects a delicate balance, offering just enough sunshine to enjoy outdoor activities while hinting at the approaching chill of October, which sees a further dip to 11 hours. This evolving daylight pattern not only highlights nature's rhythm but also sets the stage for the vibrant colors of fall that soon follow.
As September rolls into Suwon, South Korea, the winds begin to whisper a gentle transition from summer’s warmth. With an average wind speed of 2.7 m/s (6 mph), September maintains a delicate balance, slightly stronger than the summer months but still mild compared to the breezier days of early winter and the start of spring. This shift is inviting, creating a refreshing atmosphere perfect for outdoor activities. The steady yet soft winds hint at the changing seasons, echoing nature's subtle call for transformation as Suwon prepares for the vibrant hues and cooler breezes of autumn.
Weather in Suwon varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Suwon, focusing on differences in temperature, rainfall, humidity, and UV levels.
The weather conditions in September and January present a stark contrast. In September, temperatures range from a mild 9°C (48°F) at night to a warm average of 22°C (71°F), peaking at a scorching 31°C (88°F) during the day. This month is also characterized by relatively high humidity at 77%, along with significant rainfall measured at 136 mm (5.4 in) over 9 days. In stark contrast, January brings frigid temperatures, with lows plunging to -17°C (2°F) and an average temperature of -2°C (29°F), reaching a maximum of 13°C (55°F). Precipitation is minimal in January, totaling just 21 mm (0.8 in) over only 2 days, and humidity decreases to 71%. For more detailed information on January weather patterns, you can refer to Suwon weather in January.
September and February present contrasting weather conditions. September enjoys mild temperatures with an average of 22°C (71°F), peaking at a warm 31°C (88°F), while February is significantly colder, with an average of 0°C (33°F) and maximum temperatures reaching only 18°C (65°F). The humidity in September is notably higher at 77%, compared to February's more comfortable 65%. Additionally, September experiences much more precipitation, with 136 mm (5.4 in) over 9 days, whereas February has just 23 mm (0.9 in) spread across only 4 days. For more insights on February weather, visit Suwon weather in February.
September and March exhibit markedly different weather patterns. In September, temperatures range from a mild 9°C (48°F) at night to a warm average of 22°C (71°F) during the day, peaking at a high of 31°C (88°F). This month also experiences significant precipitation, totaling 136 mm (5.4 in) across 9 days, coupled with a higher humidity level of 77%. In contrast, March is much cooler, with nighttime temperatures dipping to -6°C (21°F) and an average of 7°C (44°F), reaching highs of 21°C (70°F). The total precipitation in March is significantly lower at 47 mm (1.9 in) over just 5 days, and humidity is also lower at 65%. For more detailed information, you can visit Suwon weather in March.
September and April present contrasting weather patterns, reflecting the transition between summer and autumn to early spring. In September, temperatures range from a minimum of 9°C (48°F) to a warm average of 22°C (71°F), peaking at 31°C (88°F). The month is also characterized by higher humidity at 77% and significant precipitation, with 136 mm (5.4 in) falling over 9 days. In contrast, April experiences cooler temperatures, with a minimum of -1°C (30°F) and an average of 12°C (54°F), reaching a maximum of 28°C (82°F). Rainfall is considerably lighter in April, totaling 54 mm (2.1 in) over just 5 days, accompanied by slightly lower humidity at 75%. For a more detailed look at the weather specifics in April, check out Suwon weather in April.
September and May present contrasting yet appealing weather conditions. In September, the temperatures range from a cooler minimum of 9°C (48°F) to a warm average of 22°C (71°F), peaking at a maximum of 31°C (88°F). Despite the warmth, the month experiences substantial precipitation, totaling 136 mm (5.4 in) over 9 days, with humidity levels hovering around 77%. In contrast, May has a slightly cooler temperature range, with minimums of 6°C (42°F) and an average of 18°C (64°F), while also reaching a maximum of 31°C (89°F). Rainfall in May is less frequent, amounting to 98 mm (3.9 in) over 8 days, and the humidity is a touch higher at 81%. For more detailed insights, check out Suwon weather in May.
Comparing the weather in September and June reveals some interesting contrasts. In September, temperatures range from a minimum of 9°C (48°F) to a maximum of 31°C (88°F), averaging about 22°C (71°F). This month experiences higher precipitation levels of 136 mm (5.4 inches) over approximately 9 days, making it considerably wetter than June. With a humidity level of 77%, September has a more varied climate, often mixing warm days with rainy spells.
In contrast, June features milder temperatures, with a minimum of 12°C (53°F) and a maximum of 33°C (91°F), also averaging around 22°C (72°F). The rainfall in June is notably less, at 80 mm (3.1 inches) over about 7 days, and the humidity is slightly higher at 85%. For more detailed insights into June weather, you can check Suwon weather in June. Overall, while both months share a similar average temperature, September tends to be wetter and cooler at its lowest point, while June remains drier and warmer.
When comparing the weather in September to that of July, one can see distinct differences. September experiences cooler temperatures, with a minimum of 9°C (48°F) and an average of 22°C (71°F), while July is significantly warmer, featuring a minimum temperature of 18°C (65°F) and an average of 26°C (79°F). Additionally, July tends to be wetter with 235 mm (9.3 in) of precipitation over 14 days, compared to September's 136 mm (5.4 in) spread across 9 days. Humidity levels are also higher in July at 91%, compared to September's 77%, contributing to a more sultry atmosphere. For a closer look at July's conditions, visit Suwon weather in July.
In comparing the weather of September and August, we see a notable shift in temperatures and precipitation. September experiences a cooler range, with minimum temperatures dropping to 9°C (48°F) and maximums reaching 31°C (88°F), whereas August is considerably warmer, with minimums at 16°C (61°F) and highs soaring to 38°C (101°F). Additionally, September has a lower average precipitation of 136 mm (5.4 in) over 9 days, while August is much wetter, accumulating 255 mm (10.1 in) across 14 days. Humidity levels are also higher in August at 91%, compared to September's 77%, contributing to a more uncomfortable feel during the summer's peak. For more detailed information on August weather, visit Suwon weather in August.
In comparing the weather between September and October, one can see notable transitions as autumn sets in. September features warmer temperatures, with a minimum of 9°C and an average of 22°C, peaking at a high of 31°C. This month also experiences significant rainfall, totaling 136 mm over 9 days, coupled with a humidity level of 77%. In contrast, October brings a marked drop in temperature, with a minimum of 1°C and an average of 15°C, while still reaching highs of 29°C. Precipitation is reduced to 62 mm over just 5 days, and humidity slightly increases to 79%. For more detailed insights into October's climate, you can explore Suwon weather in October.
September is characterized by significantly warmer temperatures, with a minimum of 9°C (48°F) and an average high of 31°C (88°F), making it feel much more summery. In contrast, November brings a notable chill, featuring temperatures that can drop to -5°C (23°F) and an average of 8°C (46°F). While September sees more rainfall (136 mm over 9 days) and relatively high humidity at 77%, November experiences much lighter precipitation of 54 mm over just 5 days and slightly higher humidity at 80%. For more detailed insights on November weather, you can visit Suwon weather in November.
In September, the weather is notably warmer and more humid, with average temperatures around 22°C (71°F) and maximums reaching as high as 31°C (88°F). The month also experiences significant rainfall, totaling 136 mm (5.4 in) over approximately 9 days. In contrast, December brings a dramatic shift, characterized by much colder temperatures, with averages plummeting to around 0°C (33°F) and lows dipping down to -14°C (8°F). Precipitation is limited to just 26 mm (1.0 in) over 5 days, and humidity decreases slightly to 74%. For more details on climate conditions during this season, check out Suwon weather in December.
As summer transitions to autumn, September in Suwon presents a unique tapestry of weather compared to the other months of the year. The temperatures remain relatively warm, offering a pleasant average that allows for both comfortable days and cool evenings. However, the notable increase in rainfall—along with a higher humidity level—marks a shift from the drier summer months. With precipitation occurring on about nine days, this month serves as a gentle reminder that fall is on the horizon. For a deeper understanding of how Suwon's climate shifts with the seasons, explore more at Suwon Climate.