Last updated: August 21, 2025
September in Hongqiao, China showcases a delightful transition into autumn, with average temperatures hovering around 15°C (60°F). Daytime highs reach a pleasant 23°C (74°F), while nighttime lows dip to 5°C (42°F), inviting a cozy ambiance. This month is characterized by substantial precipitation, totaling 220 mm (8.7 in) across 29 rainy days, contributing to a humidity level of 90%. Whether you're exploring the lush scenery or enjoying local culture, September's weather offers a refreshing backdrop for all activities in this vibrant city.
In September, Hongqiao experiences a delightful transition into autumn, marked by a mild climate that embraces cool mornings and comfortable afternoons. The minimum temperature settles at around 5°C (42°F), while the average hovers at a pleasant 15°C (60°F), peaking at a comfortable 23°C (74°F). This month signifies a gradual cooling trend from the warmer summer days, as the temperatures dip slightly from August's higher averages. The crisp air invites outdoor activities, making it an ideal time to enjoy the vibrant changes in foliage, all while reveling in the softer sunlight that characterizes early autumn in this bustling region.
In September, Hongqiao experiences a significant jump in precipitation, with a total of 220 mm (8.7 in) spread across 29 rainy days. This marks a notable decline from the record high levels seen in July and August, which can often leave the city drenched. However, September's rainfall is still substantial, indicating the lingering effects of the monsoon season. The month serves as a transitional period, where the heavy rains begin to taper off, preparing the region for the milder and drier months ahead. As autumn approaches, the increase in precipitation not only enriches the landscape but also emphasizes the dynamic weather patterns characteristic of Hongqiao.
September in Hongqiao, China, marks the end of summer's peak humidity, as it clings to a sultry 90%—the same level witnessed in August. This high humidity persists as a climatic signature leading into the autumn months, with the air remaining thick and sticky. Interestingly, while humidity typically fluctuates throughout the year, September's levels mirror those of July and August, suggesting a prolonged humid season. As the year transitions, a gradual decline in humidity is expected, with October dipping to 86%. This pattern highlights the region's distinctive seasonal shifts, where the cooler weather of autumn slowly emerges from the lingering embrace of summer's warmth.
As summer transitions to autumn, September in Hongqiao, China, still showcases a formidable UV Index of 14, categorizing it as extreme and maintaining a burn time of just 10 minutes. This trend reflects a slight decrease from the peak levels experienced in July, yet it underscores the persistent need for sun protection as the UV intensity remains markedly high. Throughout the year, Hongqiao exhibits noteworthy fluctuations in UV levels, with the UV Index soaring to a high of 16 in July, before tapering off slightly in September. For anyone out and about, it’s crucial to stay vigilant against the sun’s rays. To plan your sun-safe activities, check the detailed forecast at Hongqiao UV Index.
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September in Hongqiao, China, brings a delightful respite with 257 hours of sunshine, setting the stage for a transitional month as summer wanes and autumn approaches. Following the peak sunshine of 339 hours in March, the months of April and May maintain generous sunlight, showcasing a trend of brightness that gradually diminishes toward autumn. While June and July see a noticeable dip, with 286 and 241 hours respectively, the sunlight in September strikes a balance, offering a comforting blend of warmth without the intensity of summer. This continuity of sunshine through the months, with September falling in the middle range, illuminates the vibrant spirit of the season, inviting residents and visitors alike to savor the mild weather before the cooler days of October.
September in Hongqiao, China, marks a transition into a period of less predictable weather, as the likelihood of sunny days dips to 18%. This decrease stands in stark contrast to the earlier months of the year, particularly February, where the sun shines with notable frequency at 81%. Following a peak during spring, the summer months bring significant cloud cover and rain, drastically lowering the chances of sun to as low as 10%. As September arrives, the remnants of summer clouds persist, resulting in a moderate likelihood of sun ahead of the more favorable conditions that begin to appear in October at 34%. This trend emphasizes the importance of planning for potentially overcast or rainy days as autumn approaches in Hongqiao.
In Hongqiao, China, September marks a transition as daylight begins to wane, offering approximately 12 hours of sunny splendor. This month reflects a gradual decrease from the long, sun-drenched days of summer, which consistently boast 13 hours of daylight from June to August. As the year progresses into October, daylight further diminishes, paralleling the subtle shift in seasons. Interestingly, this January-to-October journey showcases a rhythmic dance of light, highlighting the balance between the prolonged brightness of spring and summer, and the shorter, cozy days of fall and winter ahead. As September arrives, it's a gentle reminder of summer's end while still relishing those ample sunlit hours.
In September, the winds in Hongqiao, China maintain a gentle whisper, averaging 1.3 m/s (3 mph). This consistency in low wind speed reflects the tail end of a calm summer, following slightly higher gusts earlier in the year that peaked at 2.4 m/s (5 mph) in April. As autumn approaches, the transition becomes apparent; September's breeze echoes the soft lull of the previous months, hinting at the shifting patterns ahead. As leaves begin to turn, this subtle shift promises a welcome coolness while maintaining a tranquil atmosphere, bridging the warm summer days and the brisk fall winds to come.
Weather in Hongqiao varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Hongqiao, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is considerably warmer, with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 23°C (74°F) and an average of 15°C (60°F). This month also brings significant rainfall, with a staggering 220 mm (8.7 in) of precipitation falling over 29 days, contributing to a high humidity level of 90%. In contrast, January experiences much colder temperatures, with a minimum of -8°C (17°F) and a maximum of 16°C (61°F), averaging just 4°C (39°F). The precipitation in January is minimal, totaling only 17 mm (0.7 in) over just 4 days, accompanied by a lower humidity level of 65%. For more detailed information about January weather, you can visit Hongqiao weather in January.
When comparing the weather in September and February, there are notable contrasts in temperature and precipitation. September boasts a much warmer climate with average temperatures of 15°C (60°F), peaking at 23°C (74°F), while February experiences cooler conditions, averaging just 5°C (42°F) with a maximum of 19°C (67°F). Additionally, September is characterized by high humidity levels at 90% and significant rainfall, receiving 220 mm (8.7 in) over 29 days. In stark contrast, February sees minimal precipitation of only 18 mm (0.7 in) over just 4 days and lower humidity at 69%. For more detailed insights into weather conditions during February, you can check Hongqiao weather in February.
In comparing the weather of September and March, we see notable differences. September boasts a milder climate with average temperatures ranging from 5°C (42°F) to a maximum of 23°C (74°F), whereas March experiences colder temperatures, dipping as low as -4°C (25°F) at night, with an average of 9°C (49°F). Additionally, September is characterized by high humidity at 90% and significant precipitation, with around 220 mm (8.7 in) falling over 29 days, making it a wetter month. In contrast, March is much drier, with only 21 mm (0.8 in) of rain across just 6 days and a humidity level of 46%. For more details, you can check Hongqiao weather in March.
September weather is characterized by a wider temperature range, with minimums around 5°C (42°F) and maximums reaching 23°C (74°F). The month is quite humid, with average humidity levels at 90% and significant precipitation totaling 220 mm (8.7 in) over 29 days. In contrast, April experiences generally cooler temperatures, with minimums of 0°C (32°F) and peaks at 25°C (76°F). Precipitation is much lighter in April, with only 38 mm (1.5 in) falling over just 8 days and humidity levels at a more moderate 54%. For more details on April weather, check Hongqiao weather in April.
In comparing the weather between September and May, notable differences emerge. September generally features a broader range of temperatures, with a minimum of 5°C and a maximum of 23°C, averaging around 15°C. However, this month is also characterized by high precipitation, with 220 mm falling over 29 days, resulting in a humidity level of 90%. In contrast, May sees slightly cooler temperatures, with a minimum of 2°C and a maximum of 27°C, while maintaining an average similar to September at 15°C. Precipitation in May is significantly lower at 79 mm over just 13 days, leading to a more comfortable humidity level of 71%. For a closer look at the specifics of May weather, visit Hongqiao weather in May.
September experiences cooler overall temperatures compared to June, with average highs reaching 23°C (74°F) versus June's 28°C (83°F). The minimum temperatures in September start at 5°C (42°F), while June's minimum is slightly warmer at 9°C (49°F). Both months see significant rainfall, but September has a higher total precipitation of 220 mm (8.7 in) over 29 days, compared to June's 207 mm (8.2 in) over 23 days. Additionally, September tends to feel more humid with 90% humidity versus June's 82%. For more details about the weather in June, you can check out Hongqiao weather in June.
When comparing the weather in September to July, notable differences can be observed. September generally features a wider temperature range with a minimum of 5°C (42°F) and a maximum of 23°C (74°F), resulting in an average of 15°C (60°F). In contrast, July is warmer, with temperatures ranging from a minimum of 10°C (49°F) to a maximum of 25°C (77°F) and an average of 17°C (62°F). Both months experience significant rainfall, with September receiving 220 mm (8.7 in) and July slightly wetter at 299 mm (11.8 in), both spread over 29 days. Humidity levels are similar, with September at 90% and July at 89%. For more detailed insights into July weather, you can check Hongqiao weather in July.
September experiences cooler temperatures compared to August, with minimums dropping from 8°C (47°F) to 5°C (42°F) and maximums decreasing from 26°C (79°F) to 23°C (74°F). The average temperature in September is 15°C (60°F), while in August it is slightly warmer at 17°C (62°F). Although September has slightly less total precipitation at 220 mm (8.7 in) compared to 289 mm (11.4 in) in August, it has more rainy days, with 29 days of precipitation versus 27 in August. Humidity remains consistent at 90% for both months, contributing to a moist atmosphere. For more detailed insights on the August weather, you can visit Hongqiao weather in August.
In September, the weather is characterized by a mild average temperature of 15°C (60°F), with daytime highs reaching up to 23°C (74°F). However, this month also experiences significant rainfall, totaling 220 mm (8.7 in) over 29 days, accompanied by high humidity levels of 90%. In contrast, October sees a slight drop in temperatures, with an average of 12°C (55°F) and a minimum of 3°C (38°F). The precipitation also decreases significantly to 105 mm (4.1 in) over 19 days, and humidity levels taper off to 86%. For more details on October’s weather, you can visit Hongqiao weather in October.
September and November present a striking contrast in weather conditions. In September, temperatures range from a mild 5°C (42°F) at night to a comfortable 23°C (74°F) during the day, with an average of 15°C (60°F). However, it is also the wettest month with 220 mm (8.7 in) of precipitation spread over 29 days, leading to a high humidity level of 90%. Conversely, November experiences a significant drop in temperatures, with a minimum of -3°C (28°F) and an average of 8°C (46°F), peaking at 19°C (66°F). The month sees substantially less rain, at just 20 mm (0.8 in) over 6 days, and humidity decreases slightly to 85%. For more detailed information on November weather, you can visit Hongqiao weather in November.
September and December present starkly contrasting weather patterns. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 23°C (74°F), with an average temperature of 15°C (60°F). This month is characterized by high humidity at 90% and significant rainfall, totaling 220 mm (8.7 in) over 29 days, resulting in a rather wet atmosphere. Conversely, December sees a drop in temperatures, with minimums plummeting to -5°C (23°F) and maximums peaking at 16°C (61°F), averaging just 5°C (41°F). The precipitation is considerably lower, only 9 mm (0.4 in) over 2 days, and the humidity decreases to 73%. For more details, you can check Hongqiao weather in December.
As September unfolds in Hongqiao, the weather takes on a unique character compared to other months. With an average temperature sitting at a mild 15°C, it offers a refreshing contrast to the sweltering heat of summer, yet the lingering humidity of 90% can make the air feel heavy. Frequent rain showers contribute to an impressive 220 mm of precipitation, often drenching the area across nearly every day of the month. This transition period into autumn also means cooler nights, with temperatures dipping as low as 5°C. For those interested in understanding the complete spectrum of what to expect, check out Hongqiao Climate.