Last updated: August 21, 2025
In September, Changchun, China experiences a delightful transition into mild autumn, with maximum temperatures peaking at 29°C (84°F) and an average temperature of 14°C (58°F). The days begin to cool down, with nighttime temperatures dipping to a refreshing 0°C (33°F). While the month sees 11 days of precipitation, accumulating to about 92 mm (3.6 in), the humidity remains relatively high at 85%, creating a crisp, invigorating atmosphere. This blend of pleasant warmth and occasional rain makes September an ideal time to explore the vibrant landscapes of Changchun.
September in Changchun, China marks the transition into autumn, presenting a notable shift in temperatures. As summer's warmth begins to wane, daily highs average around 29°C (84°F), inviting pleasant outdoor activities during the day. The evenings, however, bring a refreshing coolness, with minimum temperatures dipping to about 0°C (33°F). This month acts as a bridge, showcasing the last flushes of summer warmth while hinting at the crispness of fall, with an overall average of 14°C (58°F). Such variations create a comfortable climate ideal for exploration, making September a delightful time to experience the natural beauty and vibrant culture of Changchun.
In September, Changchun experiences a notable shift in precipitation, recording 92 mm (3.6 in) of rainfall over 11 days. This amount showcases a decrease from the intense summer months of July and August, where heavy rains consistently drenched the city. However, it's still significantly higher than the drier winter months. This transitional period hints at the onset of autumn, as the rains begin to taper off leading into October, where precipitation plummets to just 22 mm (0.9 in). Such trends indicate that while September remains moderately wet, it serves as a bridge to the crisp, dry days of fall that follow.
In September, Changchun experiences a notable shift in humidity, with levels reaching 85%. This slight decrease from the peak of 87% in August signals the transition from the hot summer months into the more temperate embrace of autumn. September's humidity remains relatively high, continuing a trend established during the summer, yet it marks the beginning of a gradual decline as the city moves towards October's average of 80%. This fluctuation in humidity can often create a palpable freshness in the air, inviting residents and visitors alike to savor the contrasting seasons in this charming northeastern city of China.
As September rolls in Changchun, China, residents can expect a high UV Index of 6, indicating a shift towards more intense sun exposure after the scorching summer months. With a recommended burn time of 25 minutes, it's essential to remain vigilant while enjoying the outdoors. This month marks a decline from the very high levels observed in July and August, yet it's still significant compared to earlier in the year; for instance, January starts off with a low UV Index of just 2. As the seasons transition, becoming aware of these UV trends is crucial for skin protection. For more detailed insights, visit Changchun UV Index.
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As September arrives in Changchun, the city basks in 283 hours of sunshine, a delightful continuation of the bright summer days. This month marks a slight dip in sunlight compared to the sun-drenched heights of July, which boasts 343 hours. However, September still enjoys a generous amount of sun, significantly more than the winter months ahead, which see fewer hours like 187 in January and 220 in November. The gradual decrease in sunlight from the summer peak indicates the transition into autumn, but September's brightness ensures that the warmth of summer lingers a little longer, captivating residents and visitors alike with its golden charm.
In September, Changchun, China, experiences a 41% chance of sunny weather, marking a slight improvement from the summer months when July and August see considerably less sunshine, at 30% and 36% respectively. This transitional month hints at the upcoming autumn, where the likelihood of clear skies begins to rise again, as evidenced by the 65% chance in October. The trend suggests that while September might not be the sunniest month, it offers a refreshing shift from the cloudier days of summer, making it a pleasant time for outdoor activities before the colder months set in.
As September arrives in Changchun, daylight begins to wane, offering a gentle transition from the warmth of summer to the crispness of autumn. With 12 hours of daylight, the month marks a noticeable dip from the sun-drenched 15 hours enjoyed in the peak of June through August. This gradual decrease reflects a typical trend as the year progresses, where daylight hours steadily diminish from the long days of summer, culminating in a brief period of balance before plunging into the shorter days of October and beyond. September's daylight serves as a reminder of nature's rhythms, inviting residents to savor the remaining sunlit moments before winter's embrace.
As September arrives in Changchun, the winds remain gentle, with an average speed of 2.9 m/s (7 mph), mirroring the breezy conditions of the previous month. This consistency in wind speed echoes the slightly calming trend seen throughout the summer, where July recorded the lowest average at 2.8 m/s. The seasonal transition from late summer to early autumn maintains a moderate breeze that offers a pleasant backdrop to the city's vibrant landscape. As the air cools and prepares for the crispness of fall, September's winds serve as a gentle reminder of nature's rhythm, hinting at the change to come while ensuring that the days remain refreshingly lively.
Weather in Changchun varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Changchun, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by mild temperatures, with a minimum of 0°C (33°F) and an average of 14°C (58°F), peaking at a comfortable 29°C (84°F). This month experiences significant precipitation, totaling 92 mm (3.6 in) over about 11 days, accompanied by high humidity levels at 85%. In stark contrast, January brings frigid conditions, where temperatures plunge to a minimum of -37°C (-35°F) and average around -20°C (-3°F), reaching a maximum of -3°C (26°F). This winter month sees minimal precipitation, with only 4 mm (0.1 in) and no rainy days, along with lower humidity at 75%. For more details on winter conditions, you can check Changchun weather in January.
When comparing the weather in September and February, the differences are stark. September enjoys milder temperatures, with an average of 14°C (58°F), peaking at a warm 29°C (84°F), while February is much colder, averaging -15°C (5°F) and with maximum temperatures only reaching 8°C (47°F). Additionally, September experiences more precipitation, totaling 92 mm (3.6 in) over 11 days, compared to a mere 5 mm (0.2 in) over just one day in February. The humidity is also higher in September at 85%, whereas February has relatively lower humidity at 70%. For a deeper look into February's weather, you can visit Changchun weather in February.
When comparing the weather in September to that of March, the differences are striking. September typically enjoys a much warmer climate, with average temperatures around 14°C (58°F) and maximums reaching up to 29°C (84°F), along with a high humidity of 85%. In contrast, March is characterized by significantly colder temperatures, where the average dips to -3°C (27°F), and lows can plummet to as low as -26°C (-14°F), making it essential to bundle up. Additionally, September sees more precipitation, totaling 92 mm (3.6 in) over about 11 days, while March is relatively dry, experiencing only 12 mm (0.5 in) across just 2 days. For those looking for detailed information, check out Changchun weather in March.
When comparing the weather in September and April, significant differences emerge. September typically presents warmer temperatures, with a minimum of 0°C (33°F) and an average high reaching 29°C (84°F). In contrast, April starts off cooler, with temperatures dropping to a minimum of -9°C (16°F), though it can still peak at a comfortable 26°C (80°F). Additionally, September experiences significantly higher precipitation, averaging 92 mm (3.6 in) over 11 days, while April sees only 32 mm (1.3 in) of rain across 4 days. Humidity also plays a role, with September averaging 85%, making it feel more muggy compared to April's 59%. For more details on April weather specifics, you can refer to Changchun weather in April.
In comparing the weather of September and May, several notable differences emerge. In September, temperatures range from a minimum of 0°C (33°F) to a maximum of 29°C (84°F), with an average of 14°C (58°F). This month also experiences more precipitation, totaling 92 mm (3.6 in) over 11 days, and higher humidity levels at 85%. Conversely, May sees slightly cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 32°C (89°F), yet it maintains the same average temperature of 14°C (58°F). Precipitation is significantly lower in May at 43 mm (1.7 in) spread over only 7 days, and the humidity is more comfortable at 61%. For more details on what to expect in May, visit Changchun weather in May.
In comparing the weather between September and June, September typically experiences cooler temperatures with a minimum of 0°C (33°F) and an average of 14°C (58°F), while June boasts a warmer minimum of 6°C (43°F) and an average of 19°C (67°F). June can reach maximum highs of up to 36°C (98°F), contrasting sharply with September's maximum of 29°C (84°F). Additionally, June sees more precipitation, averaging 116 mm (4.6 in) over 15 days compared to September's 92 mm (3.6 in) over 11 days. Despite this, September is slightly more humid, averaging 85%, while June has a humidity level of 79%. For more detailed information about June's weather patterns, you can visit Changchun weather in June.
When comparing the weather between September and July, notable differences in temperature and precipitation emerge. September experiences a broader temperature range, with nighttime lows dipping to 0°C (33°F) and daytime highs reaching up to 29°C (84°F), resulting in a cooler average temperature of 14°C (58°F). Conversely, July is significantly warmer, with an average temperature of 23°C (74°F) and maximum highs of 35°C (95°F), making it the peak of summer. However, July also sees more rainfall, totaling 148 mm (5.8 in) over 15 days, compared to September's 92 mm (3.6 in) across 11 days. Humidity levels are slightly similar, with September at 85% and July at 84%. For a deeper insight into July's weather specifics, you can explore Changchun weather in July.
In comparing the weather between September and August, September tends to be cooler, with average temperatures ranging from a minimum of 0°C (33°F) to a maximum of 29°C (84°F), while August typically experiences a milder range with minimums of 4°C (40°F) and maximums of 30°C (87°F). Additionally, September is drier with 92 mm (3.6 in) of precipitation on 11 days, compared to August's 170 mm (6.7 in) across 17 days. Despite the slight difference in humidity, which remains relatively high at 85% in September compared to 87% in August, the overall weather indicates that September marks a transition towards cooler and less rainy conditions. For more details, you can visit Changchun weather in August.
September weather is characterized by warmer temperatures, with an average of 14°C (58°F) and highs reaching up to 29°C (84°F). The month experiences significant precipitation, totaling 92 mm (3.6 in) over 11 rainy days, along with relatively high humidity at 85%. In contrast, October brings a notable drop in temperatures, averaging around 5°C (41°F) and peaking at 26°C (78°F). Precipitation decreases sharply to just 22 mm (0.9 in) spread over 4 days, while humidity drops slightly to 80%. For more detailed information, check out Changchun weather in October.
September weather in Changchun is characterized by mild temperatures, ranging from a minimum of 0°C (33°F) to a maximum of 29°C (84°F), with an average of 14°C (58°F). The month sees relatively high humidity at 85% and experiences about 92 mm (3.6 inches) of precipitation over approximately 11 days. In stark contrast, November brings much colder conditions, with temperatures plummeting to a minimum of -25°C (-13°F) and an average of -7°C (20°F). The maximum temperature only reaches 14°C (57°F), and the month is considerably drier, recording just 17 mm (0.7 inches) of precipitation over 3 days and lower humidity at 61%. For more details about the specific weather conditions in November, visit Changchun weather in November.
In September, the weather is relatively mild with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 29°C (84°F) and an average of 14°C (58°F). This month sees about 92 mm (3.6 in) of precipitation over 11 days, resulting in high humidity levels at 85%. In contrast, December brings a stark shift, with temperatures plunging to a minimum of -31°C (-24°F) and an average of -18°C (1°F), peaking at just 5°C (42°F). The precipitation significantly drops to only 6 mm (0.2 in) over just 1 day, accompanied by a decrease in humidity to 60%. For more details about the December climate, visit Changchun weather in December.
As September arrives in Changchun, the transition from the warmth of summer to the crispness of autumn becomes evident. Average temperatures dip significantly, providing a refreshing contrast to the peak summer heat, with occasional warm days still lingering. However, this month also sees increased precipitation, making it one of the wetter periods, often accompanied by high humidity that adds to the atmosphere. The blend of mild days and rainy spells fosters a vibrant autumnal ambiance, setting the stage for the stunning fall foliage to come. For more detailed insights into the seasonal climate, visit Changchun Climate.