September Weather in Pyongyang, North Korea

Last updated: August 21, 2025

September in Pyongyang, North Korea brings a varied climate, characterized by warm days and cool nights. The maximum temperature can reach a comfortable 31°C (88°F), while the average settles around a pleasant 21°C (70°F), dropping to a cooler 6°C (43°F) at night. With humidity levels at 77%, the air can feel quite humid, especially with a total precipitation of 119 mm (4.7 in) spread over 8 days of rain. Visitors and locals alike should prepare for the blend of warm weather and occasional showers, making September a month of dynamic weather patterns in the heart of North Korea.

September Temperature in Pyongyang

In September, Pyongyang experiences a noticeable transition as summer fades into autumn. The temperatures begin to cool down, with a minimum of 6°C (43°F) and an average around 21°C (70°F), offering a comfortable climate for outdoor activities. The peak temperatures can reach a maximum of 31°C (88°F), a warm farewell to summer heat. This gradual decrease in temperature from the sweltering highs of August creates a refreshing shift, making September an inviting month to explore the city's rich culture and history before the chill of winter settles in. The month embodies a harmonious balance between warmth and mildness, perfect for both locals and visitors alike.

September Weather in Pyongyang: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Pyongyang, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pyongyang, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec242942546472787869564227
Data source: Temperature data for Pyongyang generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Pyongyang

In Pyongyang, September marks a significant shift in precipitation patterns as the summer rains begin to taper off. With 119 mm (4.7 in) of rainfall spread over 8 days, the month experiences a noticeable decrease from the previous month’s peak, yet it remains one of the wetter months of the year. This rainfall delivers a refreshing reprieve from the sweltering summer heat, contributing to the lush landscapes that characterize the city as autumn approaches. As temperatures cool and the days shorten, September stands out as a transitional period where mother nature balances the last remnants of summer's bounty with the impending crispness of fall.

September Precipitation Trends in Pyongyang

The chart displays monthly precipitation patterns in Pyongyang, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Pyongyang, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec13183150112136182269119474424
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Pyongyang

In September, Pyongyang experiences a noticeable drop in humidity, settling at 77% after the sweltering peaks of the summer months, where humidity soared to a staggering 90% in August. This decline marks a transition point as the city shifts from the intense humidity of the warm season. Although September's levels remain relatively high compared to the winter months, which hover around 65% to 69%, the decrease signals the onset of autumn. As the year progresses, humidity levels generally fluctuate, peaking in the summer and tapering off into the cooler months, showcasing the region's distinct climatic patterns.

September Average Humidity in Pyongyang

This chart illustrates the average monthly humidity levels in Pyongyang, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Pyongyang is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%62%60%67%76%83%88%90%77%80%76%69%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Pyongyang

As summer transitions into autumn, September in Pyongyang, North Korea, sees a UV Index of 9, categorized as very high. This marks a slight decline from August's extreme levels, yet it still necessitates caution for outdoor activities. With a burn time of just 15 minutes, residents and visitors alike should be mindful of sun exposure, particularly during midday. The trend throughout the year shows a peak during the summer months, illustrating how essential sun protection remains as the season shifts. For those planning a visit, understanding the UV index is crucial for a safe experience—learn more at Pyongyang UV Index.

Maximum UV Index Levels in Pyongyang for September

The chart shows the monthly maximum UV Index (UVI) for Pyongyang in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Pyongyang typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec345891010119642
Data source: Pyongyang September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Pyongyang

As the warmth of summer gently transitions into the crispness of autumn, September brings a notable 282 hours of sunshine to Pyongyang. This continuation of sunny days marks a slight dip from the vibrant days of July and June, which basked in over 313 hours of sunlight. Nonetheless, September's ample sunshine still reflects a remarkably bright summer, standing well above the sun-drenched months of January and February, which struggle with just 200 and 242 hours, respectively. The gradual decrease in sunlight hours as the year progresses hints at the inevitable shift towards the cooler months, yet the sunny days of September offer an inviting farewell to summer, making it a delightful time for outdoor activities amid the rapidly changing season.

Monthly Sunshine Duration in Pyongyang: September Highlighted

The September sunshine duration represents the total number of hours Pyongyang experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec200h242h286h294h314h318h313h290h282h261h230h232h
Data source: Pyongyang September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Pyongyang During September

As September unfolds in Pyongyang, North Korea, the likelihood of sunny weather presents a promising shift in the seasonal cycle, with a 48% chance of sunshine gracing the city. This marks a notable improvement compared to the depths of summer, when the sunniest days dwindled to 34% in August and 37% in July. Following this late-summer lull, September stands out as a transitional month, not quite matching the early autumn brightness seen in October (50% chance of sun), but still offering a glimmer of hope for clearer skies ahead. Overall, the gradual increase in sunshine from late summer to early autumn demonstrates a rhythm in Pyongyang's weather patterns, inviting residents and visitors alike to enjoy the lingering warmth and light of the season.

Percentage of Sunny Days in September in Pyongyang

The chart illustrates the percentage of sunny days in Pyongyang throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Pyongyang experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec55%68%49%49%43%40%37%34%48%50%58%63%
Data source: Pyongyang September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Pyongyang in September

As summer transitions to autumn in Pyongyang, September experiences a notable decrease in daylight duration, with the sun shining for approximately 12 hours each day. This marks a decline from the peak of 14 hours reached in June through August, highlighting a gradual shift in the seasons. The increasing brevity of daylight serves as a precursor to the shorter days of October and November, where daylight further diminishes to 11 and 10 hours respectively. This pattern not only indicates the onset of cooler weather but also invites residents to embrace the rich cultural activities that accompany the changing landscape of North Korea during this time of year.

Average Daylight Hours in Pyongyang for September

The chart illustrates the variation in daylight duration in Pyongyang throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 45m10h 43m11h 57m13h 13m14h 18m14h 50m14h 34m13h 37m12h 24m11h 8m10h 2m9h 27m
Data source: Pyongyang daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Pyongyang

As the summer heat wanes, September in Pyongyang brings a gentle change in the air, with average wind speeds settling at 2.6 m/s (6 mph). This slight uptick from the calms of July and August, where the wind barely stirred at around 2.2-2.3 m/s (5 mph), signals the onset of autumn. The winds in September tend to be more invigorating than the preceding months, offering a refreshing contrast as the city transitions into the cooler fall season. Although these speeds are relatively moderate compared to the winter months, they provide a pleasant breeze that sweeps through the streets, making this an ideal time for outdoor activities and enjoying the vibrant landscapes of North Korea.

Average September Wind Speed in Pyongyang

The chart displays monthly wind speed patterns in Pyongyang, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.23.42.83.13.12.42.22.32.6 m/s2.82.93.2
Data source: Pyongyang September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Pyongyang Compares to Other Months

Weather in Pyongyang varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Pyongyang, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January present strikingly contrasting weather conditions. In September, temperatures fluctuate from a mild minimum of 6°C (43°F) to a warm average of 21°C (70°F), peaking at a hot 31°C (88°F). The month experiences considerable rainfall, with an average precipitation of 119 mm (4.7 in) over approximately 8 days and humidity levels at 77%. In stark contrast, January plunges into the cold, with temperatures ranging from a frigid minimum of -19°C (-1°F) to an average of -4°C (25°F), with a maximum barely reaching 11°C (51°F). Precipitation is minimal at just 13 mm (0.5 in) over 2 days, and humidity drops to 65%. For more detailed information, you can check Pyongyang weather in January.

September and February showcase striking contrasts in weather patterns. In September, temperatures range from a mild 6°C (43°F) to a warm 31°C (88°F), with an average of 21°C (70°F) and relatively high humidity at 77%. This month experiences about 119 mm (4.7 in) of rainfall over eight days, contributing to a lush, vibrant atmosphere. In contrast, February features much colder conditions, with temperatures dropping as low as -17°C (2°F) and averaging -2°C (29°F). The maximum temperature reaches 17°C (63°F), and precipitation is minimal at just 18 mm (0.7 in) over four days, accompanied by lower humidity levels of 61%. For more details on February weather, check Pyongyang weather in February.

In comparing the weather between September and March, it's clear there is a significant contrast. September greets us with warmer temperatures, ranging from a chilly 6°C (43°F) at night to a pleasant average of 21°C (70°F) during the day, occasionally peaking at 31°C (88°F). With 119 mm (4.7 in) of precipitation over about 8 days, this month also exhibits a higher humidity level of 77%. In stark contrast, March is much cooler, with temperatures dipping to a minimum of -9°C (17°F), averaging only 6°C (42°F), and reaching a maximum of 21°C (70°F) — though it doesn’t often get that warm. Precipitation is significantly lower in March, at just 31 mm (1.2 in) over approximately 4 days, accompanied by a reduced humidity level of 60%. For a more detailed overview, you can visit Pyongyang weather in March.

September and April present quite contrasting weather patterns. In September, temperatures range from a minimum of 6°C (43°F) to a maximum of 31°C (88°F), with an average of 21°C (70°F), making it warm and pleasant. The month sees a fair amount of rainfall, with 119 mm (4.7 in) of precipitation over 8 days and a humidity level of 77%. In contrast, April experiences cooler temperatures, starting at a minimum of -2°C (28°F) and peaking at 26°C (79°F), with an average of 12°C (54°F). precipitation is much lower at 50 mm (2.0 in) over just 6 days, and humidity is relatively lower at 67%. For more details on April weather, you can refer to Pyongyang weather in April.

When comparing the weather in September and May, we observe a few notable differences. September generally boasts a wider temperature range, with average highs reaching 31°C (88°F) compared to May's maximum of 34°C (93°F). Both months experience roughly the same level of precipitation, with September recording 119 mm (4.7 in) and May slightly less at 112 mm (4.4 in), occurring over an equal number of days (8). Humidity levels are similar as well, with September at 77% and May at 76%. Overall, while both months are characterized by warm temperatures and comparable rainfall, September has a slight edge in terms of humidity and overall warmth during daytime. For more detailed insights, you can check Pyongyang weather in May.

When comparing weather conditions in September and June, it's evident that both months offer warm temperatures, but with distinct differences. In September, the minimum temperature dips to 6°C (43°F), while the average temperature rises to a comfortable 21°C (70°F) and can peak at 31°C (88°F). This month sees around 119 mm (4.7 in) of precipitation over approximately 8 days and experiences humidity levels of 77%. In contrast, June presents slightly milder temperature extremes, with minimums at 12°C (54°F), an average of 22°C (72°F), and a maximum of 33°C (91°F). The rainfall is marginally higher at 136 mm (5.3 in) spread over 10 days, accompanied by increased humidity at 83%. For more detailed insights into June's weather specifics, you can check Pyongyang weather in June.

When comparing the weather in September and July, notable differences emerge. September experiences a wider range of temperatures, with minimums dropping to 6°C (43°F) and maximums reaching 31°C (88°F), while the average sits around 21°C (70°F). In contrast, July is significantly warmer, characterized by minimums of 17°C (63°F), average temperatures of 26°C (79°F), and maximums soaring to 36°C (96°F). Additionally, July sees higher precipitation at 182 mm (7.2 in) over 14 days, compared to September's 119 mm (4.7 in) across 8 days. Humidity levels are also higher in July at 88%, compared to September's 77%. For more detailed insights, you can check Pyongyang weather in July.

When comparing the weather in September to that of August, September exhibits a notable decrease in temperature and humidity. The minimum temperature in September drops to 6°C (43°F) compared to 13°C (56°F) in August, while the average temperature falls from 26°C (79°F) in August to 21°C (70°F) in September. Additionally, September experiences less precipitation, with 119 mm (4.7 in) over 8 days, in contrast to August's 269 mm (10.6 in) over 17 days. This shift results in a more comfortable humidity level of 77% in September versus the higher 90% experienced in August. For those interested in a more detailed exploration of August weather, refer to Pyongyang weather in August.

September and October present a notable shift in weather patterns. In September, temperatures range from a minimum of 6°C (43°F) to a maximum of 31°C (88°F), with an average of 21°C (70°F). The month experiences substantial rainfall, totaling 119 mm (4.7 in) over 8 days, and humidity levels hover at 77%. In contrast, October sees a cooler climate, with temperatures dropping to a minimum of 0°C (32°F) and averaging 14°C (57°F), peaking at 29°C (85°F). Precipitation also decreases significantly to 47 mm (1.9 in) over just 6 days, and humidity rises slightly to 80%. For a more detailed look at October weather, visit Pyongyang weather in October.

September and November present strikingly different weather patterns. In September, temperatures range from a minimum of 6°C (43°F) to a maximum of 31°C (88°F), with an average temperature of 21°C (70°F). This month is relatively humid, with an average humidity of 77% and 119 mm (4.7 in) of precipitation over 8 days. In contrast, November experiences much cooler temperatures, with a minimum of -9°C (16°F), an average of 6°C (42°F), and a maximum of 21°C (71°F). The month sees less precipitation, totaling 44 mm (1.7 in) over just 5 days, and retains a similar humidity level of 76%. For more detailed weather information, you can check Pyongyang weather in November.

September weather in Pyongyang is characterized by a warm and pleasant climate, with average temperatures ranging from a mild 21°C (70°F) to a high of 31°C (88°F). The month experiences around 119 mm (4.7 in) of precipitation over approximately 8 days, accompanied by relatively high humidity at 77%. In stark contrast, December sees a significant drop in temperatures, with averages plunging to around -3°C (27°F) and maximums reaching only 10°C (50°F). Precipitation decreases considerably to 24 mm (0.9 in) spread over just 4 days, while humidity levels fall to 69%. This shift from warm September days to the cold, crisp air of December highlights the dramatic seasonal changes in the region. For more details on December weather, visit Pyongyang weather in December.

Compare Pyongyang's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Pyongyang

As September unfolds in Pyongyang, the city experiences a refreshing transition from the sweltering summer heat. The days start to cool with comfortable averages, while the humidity levels linger, adding a hint of moisture to the air. Unlike the scorching peak months, September welcomes a more balanced weather pattern, characterized by moderate temperatures and occasional rain. This shift not only nourishes the landscape but also offers visitors a captivating glimpse into the city’s vibrant autumn colors. For a deeper understanding of how September fits into the broader climatic trends, explore more at Pyongyang Climate.