September Weather in Changbai, China

Last updated: August 21, 2025

In September, Changbai, China experiences a dynamic weather shift, with temperatures ranging from a pleasant maximum of 26°C (78°F) to a brisk minimum of -2°C (28°F), averaging around 13°C (55°F). This transitional month sees 79 mm (3.1 in) of precipitation spread over 8 days, contributing to a humidity level of 79% that enhances the region's lush landscape. As the leaves begin to change, visitors can expect a blend of warm afternoons and cooler evenings, making it an ideal time for exploring the natural beauty of this mountainous area.

September Temperature in Changbai

As September dawns in Changbai, China, the weather begins its gentle transition from the warmth of summer to the cool embrace of autumn. Temperatures during this month display a marked drop from the summer highs, with lows around -2°C (28°F), but still enjoying a comfortable average of 13°C (55°F) and a pleasant high reaching 26°C (78°F). This shift heralds the arrival of crisp air, pleasant for outdoor adventures, and showcases a delightful balance between lingering warmth and the onset of colder days. With temperatures steadily decreasing as the month progresses, September serves as a preview of the colder months ahead, making it a perfect time to experience the stunning natural beauty of Changbai before winter's chill sets in.

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

The chart illustrates September temperature patterns in Changbai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Changbai, 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).
JanFebMarAprMayJunJulAugSepOctNovDec392740515968665541257
Data source: Temperature data for Changbai 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 Changbai

In September, Changbai experiences a noticeable dip in precipitation, receiving 79 mm (3.1 in) of rain over 8 days. This marks a continuation of the trend from August, where the region sees its highest rainfall of the year at 187 mm (7.4 in). As summer transitions into autumn, the reduced precipitation in September signifies the gradual drying out of the region, following a peak in rainfall during the summer months. The decrease not only hints at changing weather patterns but also sets the stage for the cooler and drier months ahead, contributing to the overall annual precipitation cycle in Changbai.

September Precipitation Trends in Changbai

The chart displays monthly precipitation patterns in Changbai, 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 Changbai, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec143042521091009718779564424
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Changbai

In September, the humidity in Changbai, China averages a comfortable 79%, marking a gradual decline from the peak levels of summer. This month reflects a transition as the sweltering August humidity of 89% recedes, providing a more pleasant environment for outdoor activities. Overall, the data illustrates a distinct trend of rising humidity from the dry winter months, peaking in the sultry summer before tapering off in early autumn. Following September, October sees a slight increase to 80%, hinting at a lingering warmth, while the overall humidity remains significantly higher than in the cooler months of winter. This rhythmic pattern showcases the region's seasonal shifts, making September a balance of warmth and humidity before the onset of fall.

September Average Humidity in Changbai

This chart illustrates the average monthly humidity levels in Changbai, 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 Changbai is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%71%63%65%73%83%87%89%79%80%69%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Changbai

As September unfolds in Changbai, China, the UV Index reflects a notable shift with a value of 8, categorizing it as very high. This marks a slight decrease from the extreme levels reached during the peak summer months of June, July, and August, when the index consistently hit 11. However, sunseekers should still remain vigilant, as the burn time reduces to just 15 minutes—a reminder that even as summer wanes, the potential for skin damage remains potent. Such patterns emphasize the importance of sun protection as we transition into fall. For a detailed understanding of the UV Index throughout the year, visit Changbai UV Index.

Maximum UV Index Levels in Changbai for September

The chart shows the monthly maximum UV Index (UVI) for Changbai 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 Changbai typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec347991111118632
Data source: Changbai 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 Changbai

As summer fades and September arrives in Changbai, the region experiences a blend of warmth and shifting light. With 281 hours of sunshine, September stands out as a month of transition, slightly lower than the peak of summer but still basking in a generous glow. The gradual decline from the vibrant 334 hours in July to this figure signals the changing seasons, while remaining markedly brighter than the drearier winter months. This sunlight trend highlights the region's lush landscapes and bountiful harvests, making September a picturesque time for outdoor exploration and appreciation of nature's fading brilliance before autumn fully embraces Changbai.

Monthly Sunshine Duration in Changbai: September Highlighted

The September sunshine duration represents the total number of hours Changbai 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.
JanFebMarAprMayJunJulAugSepOctNovDec201h240h290h296h306h324h334h290h281h266h235h234h
Data source: Changbai September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Changbai During September

In Changbai, China, the likelihood of sunny weather experiences a notable decline as summer gives way to autumn. September marks a significant dip, with only a 28% chance of sunshine, making it one of the cloudier months of the year. This trend follows a downward trajectory from the summer months, where sunshine probabilities lingered in the low thirties, peaking at 37% in May. As the days grow shorter and the chill of fall approaches, residents and visitors can expect increasingly overcast conditions, contrasting sharply with the brighter skies of earlier months. Thus, September serves as a turning point, signaling the onset of a cloudier season in Changbai's weather pattern.

Percentage of Sunny Days in September in Changbai

The chart illustrates the percentage of sunny days in Changbai 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 Changbai experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec49%54%54%48%37%31%33%29%28%53%47%49%
Data source: Changbai September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Changbai in September

In Changbai, China, the transition into September marks a subtle yet significant shift in daylight duration, as the days begin to shorten, with an average of 12 hours of daylight. Following a peak in June with 15 hours of sunlight, there is a gradual decline as the summer months wane. July and August maintain a similar level of daylight, but as September approaches, daylight slips down to 12 hours, indicating a preview of autumn's arrival. This trend of decreasing daylight continues into the later months, with October and November dropping to 11 and 9 hours respectively. The cyclical nature of daylight throughout the year highlights the captivating dance between seasons, with September serving as a gentle reminder of the cooler months ahead.

Average Daylight Hours in Changbai for September

The chart illustrates the variation in daylight duration in Changbai throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 32m10h 35m11h 56m13h 19m14h 30m15h 6m14h 48m13h 46m12h 26m11h 3m9h 51m9h 13m
Data source: Changbai daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Changbai

As the summer winds down, September in Changbai, China embraces a gentle breeze, with an average wind speed of 1.7 m/s (4 mph). This marks a noticeable dip from the more robust winds of earlier months, such as March through May, where speeds hovered around 2.3 to 2.6 m/s (5 to 6 mph). The trend continues from the light air of the summer, peaking in July with just 1.4 m/s (3 mph). As the autumn approaches, the wind begins to pick up slightly again in October, hinting at the crisp freshness to come. Overall, September's calm winds offer a serene transition into fall, providing a perfect backdrop for nature lovers to enjoy the beauty of Changbai's mountainous landscapes as the leaves begin to change.

Average September Wind Speed in Changbai

The chart displays monthly wind speed patterns in Changbai, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.92.62.62.31.71.41.81.7 m/s1.92.72.6
Data source: Changbai September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Changbai Compares to Other Months

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

September and January present remarkably contrasting weather conditions. In September, temperatures range from a minimum of -2°C (28°F) to a maximum of 26°C (78°F), with an average of 13°C (55°F). The month experiences a fair amount of precipitation, totaling 79 mm (3.1 in) over 8 days, accompanied by relatively high humidity at 79%. In stark contrast, January's temperatures plummet, with a minimum of -36°C (-33°F) and an average of -16°C (4°F), peaking at just 2°C (36°F). This winter month sees significantly less precipitation, accumulating only 14 mm (0.6 in) over 3 days and maintaining a humidity level of 78%. For more detailed information on the weather during this chilly month, check out Changbai weather in January.

September and February present a stark contrast in weather patterns. In September, temperatures range from a cool -2°C (28°F) at night to a warm 26°C (78°F) during the day, with an average of 13°C (55°F). This month experiences moderate precipitation of 79 mm (3.1 in) over about 8 days, alongside a humidity level of 79%. In contrast, February is much colder, with minimum temperatures plummeting to -35°C (-31°F) and an average temperature of -13°C (9°F), peaking at only 8°C (46°F). Precipitation drops significantly to 29 mm (1.2 in) over just 5 days, and humidity is relatively lower at 71%. For more detailed insights into the February climate, you can explore Changbai weather in February.

September and March exhibit stark contrasts in weather patterns. In September, temperatures range from a chilly minimum of -2°C (28°F) to a pleasant maximum of 26°C (78°F), with an average of 13°C (55°F), leading to a relatively humid atmosphere at 79%. Over the course of the month, precipitation totals reach 79 mm (3.1 in) over about 8 days. In contrast, March is much colder, with temperatures dipping as low as -21°C (-5°F) and averaging -3°C (27°F) while peaking at a maximum of 18°C (65°F). The month has a lower precipitation level of 42 mm (1.6 in), also spread over 8 days, accompanied by decreased humidity at 62%. For more details on the weather in March, you can check Changbai weather in March.

When comparing the weather in September and April, several key differences emerge. September generally features milder temperatures, with an average of 13°C (55°F) and a maximum reaching up to 26°C (78°F), while April has a cooler average of only 4°C (40°F), though it can also peak at 26°C (79°F). Precipitation is slightly higher in September at 79 mm (3.1 in) over 8 days, compared to April's 52 mm (2.1 in) over 9 days. Additionally, September boasts higher humidity at 79%, in contrast to April's 65%. For further details on April conditions, check out Changbai weather in April.

In September, temperatures range from a minimum of -2°C (28°F) to a maximum of 26°C (78°F), with an average of 13°C (55°F). The month sees 79 mm (3.1 in) of precipitation over approximately 8 days, accompanied by relatively high humidity at 79%. In contrast, May experiences slightly cooler temperatures, with a minimum of -3°C (27°F) and a maximum of 29°C (85°F), while the average sits at 10°C (51°F). Precipitation is higher at 109 mm (4.3 in), spread over 15 days, and humidity is lower at 73%. For a detailed look at the weather in May in Changbai, you can visit Changbai weather in May.

When comparing the weather in September and June, we can see notable differences in temperature and precipitation patterns. September typically experiences a broader temperature range, with minimums dropping to -2°C (28°F) and maximums reaching up to 26°C (78°F). In contrast, June boasts slightly milder temperatures, with minimums around 2°C (35°F) and maximums peaking at 28°C (83°F). Precipitation is also more frequent in June, occurring on 16 days and totaling 100 mm (3.9 in), compared to September's 79 mm (3.1 in) over just 8 days. Additionally, humidity levels are relatively high in both months, with June at 83% and September at 79%, making both months feel quite moist. For a more detailed look at June weather, you can visit Changbai weather in June.

In comparing the weather of September and July, we notice distinct differences in temperature and precipitation patterns. September experiences a cooler range, with minimum temperatures dropping to -2°C (28°F) and maximums reaching 26°C (78°F), averaging around 13°C (55°F). The month also sees moderate precipitation of 79 mm (3.1 in) over 8 days, with humidity levels at 79%. In contrast, July is significantly warmer, showcasing minimum temperatures of 7°C (46°F) and maximums peaking at 32°C (90°F), with an average of 20°C (68°F). Precipitation is slightly higher in July at 97 mm (3.8 in) over 14 days, accompanied by higher humidity levels at 87%. For more details on July weather, you can visit Changbai weather in July.

In comparing the weather between September and August, September exhibits cooler temperatures, with a minimum of -2°C (28°F), an average of 13°C (55°F), and a maximum of 26°C (78°F). In contrast, August features a warmer range, with temperatures ranging from a minimum of 1°C (34°F) to a high of 32°C (91°F) and an average of 19°C (66°F). Precipitation also varies significantly; September receives 79 mm (3.1 in) over about 8 days, while August is much wetter with 187 mm (7.4 in) spread across 18 days. Additionally, the humidity in August is slightly higher at 89%, compared to 79% in September. For a more detailed look at the August climate, you can refer to Changbai weather in August.

September and October exhibit notable differences in weather patterns. September temperatures range from a minimum of -2°C (28°F) to a maximum of 26°C (78°F), with an average of 13°C (55°F). The month experiences around 79 mm (3.1 in) of precipitation over 8 days, coupled with a humidity level of 79%. In contrast, October sees a drop in average temperatures, with a minimum of -10°C (14°F) and a cooler average of 5°C (41°F), while still reaching a maximum of 24°C (75°F). Precipitation decreases to 56 mm (2.2 in) over the same number of days, with humidity slightly increasing to 80%. For more detailed insights on October weather in the region, you can check Changbai weather in October.

In September, the weather is markedly milder, with temperatures ranging from a chilly minimum of -2°C (28°F) to a warm maximum of 26°C (78°F) and an average of 13°C (55°F). This month experiences a higher level of humidity at 79% and moderate precipitation of 79 mm (3.1 in) over about 8 days. In contrast, November brings significantly colder temperatures, with a minimum of -26°C (-14°F) and an average temperature of -4°C (25°F), while the maximum only reaches 13°C (56°F). Precipitation in November is lower at 44 mm (1.7 in) spread over 7 days, and the humidity decreases to 69%. For more detailed weather information, you can check out Changbai weather in November.

The weather in September contrasts significantly with that of December. In September, temperatures range from a mild minimum of -2°C (28°F) to a warm maximum of 26°C (78°F), with an average of 13°C (55°F). This month also sees approximately 79 mm (3.1 in) of precipitation over roughly 8 days, coupled with high humidity at 79%. In stark contrast, December experiences frigid temperatures, with a minimum of -32°C (-25°F) and a maximum of just 4°C (39°F); the average temperature plummets to -14°C (7°F). Precipitation significantly decreases to 24 mm (0.9 in) over only 6 days, and humidity drops slightly to 75%. For more details about December weather, visit Changbai weather in December.

Compare Changbai's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Changbai

As September unfolds in Changbai, the weather begins to showcase a gentle transition from summer warmth to autumn's embrace. With temperatures averaging around a comfortable 13°C (55°F), the month offers a refreshing shift from the peak summer heat, making it an ideal time for outdoor activities. However, this time of year also brings increased humidity and precipitation, with around 79 mm falling over 8 days, a contrast to the drier summer months. Travelers can expect a remarkable change in landscape as the foliage starts to turn, providing a picturesque backdrop for exploration. For those looking to plan their visit, understanding the nuances of September weather can enhance the experience; more information can be found at Changbai Climate.