Last updated: August 21, 2025
September in Wonsan, North Korea offers a pleasant climate, with maximum temperatures reaching 29°C (85°F) and an average of 20°C (69°F). As the summer heat begins to wane, temperatures can dip to a refreshing 12°C (55°F) during the cooler nights. This month, travelers should prepare for a moderate 200 mm (7.9 in) of rainfall spread across approximately 11 days, contributing to the region's lush scenery. The humidity level hovers around 77%, creating a comfortable yet slightly moist atmosphere perfect for exploring the coastal beauty and vibrant local culture.
In September, Wonsan, North Korea, experiences a delightful transition into autumn, marked by milder temperatures that offer a refreshing break from the summer heat. With minimums around 12°C (55°F), average temperatures reaching 20°C (69°F), and maximums peaking at 29°C (85°F), the weather is pleasantly warm, ideal for outdoor activities. This month showcases a gradual decline from the sweltering summer months, providing a comfortable climate that invites exploration and sightseeing. As the season shifts, locals and visitors alike can enjoy the vibrant fall landscapes, making September an attractive time to experience Wonsan's unique charm.
September in Wonsan, North Korea, typically marks a significant shift in precipitation patterns, characterized by a notable decline from the peak summer rains. With an average rainfall of 200 mm (7.9 in) over approximately 11 days, September remains one of the wetter months, yet it represents a transitional phase as the intense downpours of August taper off. This month showcases a substantial drop compared to August's staggering 375 mm (14.7 in), indicating a gradual return to the drier conditions of autumn. As the summer heat fades, September's rain not only replenishes the region but also sets the stage for October's further decrease to 113 mm (4.4 in), highlighting a clear trend of diminishing rainfall as the year progresses.
In Wonsan, North Korea, the humidity levels showcase a notable trend as the year progresses. Starting from a comfortable 65% in January, humidity steadily decreases to 61% in February before gently hovering around the 60s in March and April. As spring gives way to summer, a noticeable rise occurs, with May seeing a jump to 76%, which continues to soar, peaking at 90% in August. However, by September, humidity begins to recede, settling at 77%. This decline indicates a transition as the region heads into autumn, yet levels remain significantly higher than those experienced in the earlier months of the year. With October's humidity rising again to 80%, the patterns suggest that Wonsan's maritime climate keeps the air damp, particularly during the peak summer months.
In September, Wonsan experiences a UV Index of 8, categorizing the sun's rays as very high. This indicates a need for caution, as the burn time is a brisk 15 minutes. Following the peak of summer, where the UV Index reached an extreme 11 in August, September marks a slight decrease, yet still demands attention for sun safety. As the months roll on, the UV levels show a gradual decline from June's maximum ratings, allowing for a brief respite before autumn settles in. Remember to protect your skin, as the sun's intensity remains high during this transition period. For more detailed information, you can refer to the Wonsan UV Index.
UV Risk Categories
In September, Wonsan basks in a warm embrace of 269 hours of sunlight, marking a gentle decline from the summer peak. Following the bright days of July and June, which boasted a generous 297 and 312 hours respectively, September signals the gradual transition into autumn. The month continues to offer ample sunshine, yet hints at the cooler, cloudier days ahead, as daylight dwindles from the vibrant 309 hours recorded in May. With the curtains of summer drawn, September showcases nature's beauty, wrapped in golden hues, as the city prepares for the softer light of October, which sees sunlight reduced to 248 hours. This rhythmic ebb and flow of daylight paints a vivid portrait of the changing seasons in this coastal gem.
In Wonsan, North Korea, the likelihood of sunny weather takes an interesting turn as the seasons progress. After a significant drop in sunshine from May through August, where the chances dwindle to as low as 25%, September sees a notable rebound with a 43% chance of sunny days. This increase hints at a refreshing transition into autumn, where the likelihood of sunshine begins to stabilize again, climbing slightly to 46% in October. Interestingly, this trend suggests that while summer may be marked by clouds and rain, early autumn offers a more promising glimpse of the sun, making September a viable option for those seeking clearer skies in Wonsan.
As summer transitions into autumn, September in Wonsan, North Korea, brings a gentle reduction in daylight hours, averaging 12 hours of sunlight. This marks a subtle decline from the peak of 14 hours enjoyed during the summer months of June, July, and August. Following the lively vibrancy of summer, days become gradually shorter, hinting at the impending cooler months. The trend shows a gradual ebb of daylight, starting from January's mere 9 hours, ultimately reaching its maximum in the lush warmth of May. This rhythmic shift underscores the transition of Wonsan's seasons, as daylight wanes in preparation for the more subdued days of October and November.
As September unfolds in Wonsan, the winds begin to pick up slightly, averaging 3.2 m/s (7 mph). This marks a modest increase from the summer months, where July and August experienced some of the calmest breezes of the year. The shift in wind speed indicates a subtle transition towards the autumn season, setting the stage for cooler days ahead. Overall, the year reveals a trend of brisker winds returning during the fall and winter months, with January and December bringing the highest speeds of 5.0 m/s (11 mph). Thus, September's gentle breezes serve as a gentle reminder of the seasonal changes on the horizon, bridging the serene summer with the energetic gusts of fall.
Weather in Wonsan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Wonsan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by milder temperatures, with daily averages around 20°C (69°F) and highs reaching up to 29°C (85°F). However, it also experiences considerable rainfall, totaling 200 mm (7.9 in) over approximately 11 days, paired with high humidity levels at 77%. In stark contrast, January brings a dramatic shift, with temperatures plummeting to a minimum of -18°C (0°F) and an average of -2°C (29°F). Precipitation is significantly lower at just 23 mm (0.9 in) over only 3 days, and humidity drops to 65%. For further details on how conditions in January affect Wonsan, you can check Wonsan weather in January.
September and February present a stark contrast in weather conditions. In September, temperatures range from a mild 12°C (55°F) to a warm 29°C (85°F), with an average of 20°C (69°F). This month sees significant precipitation, totaling 200 mm (7.9 in) over 11 days, and high humidity at 77%. In contrast, February experiences much colder temperatures, with a minimum of -13°C (9°F) and a maximum of 11°C (53°F), averaging around 0°C (32°F). Precipitation is notably lower at just 29 mm (1.1 in) during only 4 days, and humidity is at 61%. For more details on the February weather conditions, you can check Wonsan weather in February.
September and March present a stark contrast in weather patterns. In September, the temperatures are much warmer, ranging from a cool 12°C (55°F) to a balmy maximum of 29°C (85°F), with an average of 20°C (69°F). This month also sees significant rainfall, totaling 200 mm (7.9 in) across 11 days, coupled with high humidity levels at 77%. In comparison, March has much colder temperatures, with a minimum of -7°C (20°F) and a maximum of just 17°C (62°F), averaging around 5°C (42°F). Precipitation is notably lower in March, amounting to 60 mm (2.3 in) over only 6 days, and the humidity is also reduced to 60%. For more detailed insights, you can check Wonsan weather in March.
In September, the weather is generally warmer with temperatures ranging from a minimum of 12°C (55°F) to a maximum of 29°C (85°F), creating a pleasant average of 20°C (69°F). The month experiences higher precipitation, totaling 200 mm (7.9 in) over approximately 11 days, along with a humidity level of 77%. In contrast, April is significantly cooler, with temperatures starting at a low of 2°C (35°F) and peaking at 25°C (77°F), averaging around 11°C (51°F). It sees much less rainfall at 66 mm (2.6 in) spread across about 6 days, accompanied by a lower humidity of 67%. For a closer look at April weather in Wonsan, you can visit Wonsan weather in April.
When comparing the weather in September and May, September tends to be warmer overall, with average temperatures reaching 20°C (69°F) compared to May's 16°C (61°F). Maximum temperatures in September can climb to 29°C (85°F), while May's peak reaches 28°C (82°F). September also experiences significantly more rainfall, with an average precipitation of 200 mm (7.9 in) over 11 days, compared to May’s 123 mm (4.8 in) over 8 days. Despite this, both months maintain similar humidity levels, with September at 77% and May slightly lower at 76%. For a detailed look at weather conditions during this time, check out Wonsan weather in May.
In comparing September and June weather, both months exhibit relatively mild average temperatures, with June experiencing slightly warmer extremes. September boasts a minimum temperature of 12°C (55°F) and a maximum of 29°C (85°F), while June starts at a minimum of 13°C (56°F) and peaks at 31°C (88°F). Precipitation levels are notably higher in September, with 200 mm (7.9 in) over 11 days, compared to June's 105 mm (4.1 in) across 10 days. Additionally, humidity tends to be higher in June at 83%, in contrast to September's 77%. For more specific details on June weather in Wonsan, you can visit Wonsan weather in June.
When comparing the weather in September to July, notable differences emerge in both temperature and precipitation. September tends to be milder, with average temperatures ranging from a minimum of 12°C (55°F) to a maximum of 29°C (85°F), while July is significantly warmer, featuring averages from 17°C (62°F) to a maximum of 34°C (93°F). Additionally, September experiences about 200 mm (7.9 in) of rainfall over 11 days, which is slightly less than July's higher precipitation at 246 mm (9.7 in) across 14 days. The humidity is also lower in September at 77%, compared to the more humid July, which reaches 88%. For further details, you can check Wonsan weather in July.
In comparing the weather between August and September, we see a notable transition in conditions. September experiences cooler temperatures with a minimum of 12°C (55°F) and an average of 20°C (69°F), while August is warmer, boasting a minimum of 17°C (63°F) and an average of 25°C (77°F). The maximum temperatures in August reach up to 34°C (94°F), significantly higher than September's peak of 29°C (85°F). Additionally, September sees a reduction in precipitation, totaling 200 mm (7.9 in) over 11 days compared to August's 375 mm (14.7 in) over 18 days. Humidity also decreases from August's 90% to 77% in September, reflecting a shift towards drier conditions. For a closer look at the weather trends in August, you can visit Wonsan weather in August.
September weather is characterized by milder temperatures, with an average of 20°C (69°F) and highs reaching up to 29°C (85°F), making it feel quite warm. However, it also brings notable rainfall, with 200 mm (7.9 in) of precipitation over 11 days, resulting in a humidity level of 77%. In contrast, October marks a significant shift, with cooler temperatures averaging 14°C (58°F) and maximums dropping to 24°C (75°F). Precipitation decreases to 113 mm (4.4 in) over 9 days, and humidity slightly increases to 80%, creating a crisp autumn atmosphere. For more detailed insight into October weather, you can visit Wonsan weather in October.
September brings a warm and humid climate, with temperatures ranging from a mild 12°C (55°F) at night to a hot 29°C (85°F) during the day. The month also experiences significant rainfall, with 200 mm (7.9 in) of precipitation over 11 days. In contrast, November ushers in a much cooler environment, featuring temperatures that can plummet to -4°C (25°F) at night but can still reach a maximum of 20°C (69°F) during the day. The precipitation decreases considerably to 72 mm (2.8 in) over just 7 days, and the humidity remains similar at 76%. For more details on November weather, visit Wonsan weather in November.
September and December weather present a striking contrast in climate dynamics. In September, temperatures range from a mild 12°C (55°F) at night to a warm 29°C (85°F) during the day, accompanied by significant rainfall of 200 mm (7.9 in) spread over 11 days and high humidity at 77%. In contrast, December sees much colder temperatures, with lows plunging to -16°C (4°F) and a max of only 10°C (51°F), alongside minimal precipitation of just 21 mm (0.8 in) across 3 days. The humidity also drops to 69%, creating a drier and chillier atmosphere. For more specific information on December weather, check out Wonsan weather in December.
September marks a dynamic transition in Wonsan's weather, shifting from the warmth of summer to the cooler embrace of autumn. With average temperatures around 20°C (69°F), this month feels notably milder compared to the height of summer, making it a comfortable time for outdoor activities. However, frequent rainfall—spreading over 11 days and accumulating around 200 mm—adds a refreshing yet unpredictable element, contrasting sharply with the drier months preceding it. The humidity often remains high at 77%, enhancing the coastal haze but also invigorating the lush landscapes. For a deeper insight into the climate of Wonsan throughout the year, explore Wonsan Climate.