Last updated: August 21, 2025
September in Hongqiao, China showcases a captivating blend of warm temperatures and occasional rainfall. With maximum daily highs reaching up to 39°C (102°F) and an average temperature around 27°C (81°F), the climate remains pleasantly warm throughout the month. The nights cool down to a minimum of 17°C (62°F), providing a comfortable respite from the daytime heat. Rainfall is a frequent visitor, with 65 mm (2.5 in) expected over 10 days, contributing to a humidity level of 67%. This combination of heat and moisture creates a vibrant atmosphere, making September an intriguing time for visitors and locals alike.
As September unfolds in Hongqiao, China, the transition from the sweltering summer months to the cooler autumn days begins to take shape. With a minimum temperature of 17°C (62°F) and an average of 27°C (81°F), the warmth remains palpable, yet the oppressive heat of July and August gradually subsides. This month features a maximum temperature peaking at 39°C (102°F), hinting at the lingering summer vibes. However, compared to the soaring heights of the previous months, the shift indicates a welcome refreshment in the air, paving the way for crisp autumn days ahead. As the temperature trends downward, September offers a delightful mix of warmth and gradual coolness, showcasing the dynamic climate of this vibrant region.
In September, Hongqiao, China, experiences a noticeable shift in precipitation patterns as the summer months draw to a close. With an average of 65 mm (2.5 in) of rainfall over 10 days, the month marks a decline from the heavier rains of August and June, which often see more significant precipitation. This drop in rainfall aligns with the transition toward autumn, where the intensity and frequency of showers become less prevalent compared to the earlier, wetter months. The overall trend highlights a gradual tapering of the rainy season, setting the stage for the drier conditions that usually accompany October and November.
In September, humidity levels in Hongqiao, China experience a noticeable decline, dropping to 67% after a peak during the summer months, when July and August recorded their highest figures at 89% and 87%, respectively. This decrease marks a transition away from the stifling heat and moisture of summer, hinting at the arrival of a milder autumn. Interestingly, as temperatures begin to cool in October and November, humidity stabilizes at the same 67% level, suggesting a consistent yet comfortable atmosphere. The gradual rise in humidity from January’s moderate 66% to the late spring high of 86% illustrates a seasonal pattern, peaking in the sultry summer before settling into a more refreshing balance as the year progresses.
As September rolls into Hongqiao, the UV Index settles at 10, indicating a very high exposure category. This marks a slight decrease from the extreme levels experienced during the summer months, yet still calls for caution. With a burn time of just 15 minutes, it's essential to protect your skin during outdoor activities. The month transitions from the sweltering highs of summer, where indices reached up to 13, to more manageable—but still powerful—levels as we head into autumn. Overall, September's UV conditions remind us that even as the seasons change, sun safety remains a priority. For more details on sun exposure and safety measures, check out Hongqiao UV Index.
UV Risk Categories
In September, Hongqiao basks in a pleasant 250 hours of sunshine, marking a transition from the peak summer brilliance of August, which boasts an impressive 324 hours. This decline in sunlight hours is part of a noticeable trend as the vibrant summer months give way to the more temperate conditions of autumn. Comparing the sunshine data throughout the year, it’s evident that the sunniest months fall between May and August, with July reaching a peak of 307 hours. As September arrives, the daylight begins to taper off, hinting at the approaching cooler months, yet it still offers ample sunshine for outdoor activities and a warm farewell to summer.
As September rolls in, Hongqiao, China, welcomes a refreshing increase in sunny weather, with a 58% chance of sunshine that outshines the summer months. This marks a notable uptick compared to the gloomy days of April and June, where the chances plummeted to as low as 10% and 18%, respectively. Following a relatively muted August, September’s sunny disposition not only brightens the skyline but also uplifts spirits, making it an ideal time for outdoor activities. This trend suggests that as summer wanes, residents and visitors alike can look forward to more pleasant, sun-kissed days in the heart of autumn.
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 wind in Hongqiao, China, maintains a gentle pace with an average speed of 2.0 m/s (4 mph), mirroring the calm breezes of the preceding summer months. This consistency highlights a transition from the slightly more spirited gusts of July at 2.5 m/s (6 mph), reflecting the peak of summer winds. As the city edges closer to autumn, the winds begin to stabilize, with September's breeziness tying with the equally serene speeds in most other months, except for the brisker start of October at 2.9 m/s (7 mph). Overall, September's mild winds create a soothing atmosphere, perfect for enjoying the tail end of summer before the refreshing autumnal breezes begin to take hold.
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 characterized by warm temperatures, with averages around 27°C (81°F) and highs reaching up to 39°C (102°F). The humidity is relatively high at 67%, and there's a total precipitation of 65 mm (2.5 inches) over approximately 10 days. In contrast, January brings a stark change, with much cooler conditions where temperatures range from a low of -5°C (24°F) to a high of 23°C (74°F), averaging just 7°C (45°F). Precipitation is lighter in January at 43 mm (1.7 inches) over 8 days, and humidity remains slightly lower at 66%. For more details, you can check Hongqiao weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a mild 17°C (62°F) to a scorching high of 39°C (102°F), with an average of 27°C (81°F). The month sees 65 mm (2.5 in) of precipitation over about 10 days and maintains a humidity level of 67%. In contrast, February experiences much cooler temperatures, with a minimum of -4°C (26°F) and an average of just 9°C (48°F), peaking at 27°C (81°F). This month also has higher precipitation at 79 mm (3.1 in) spread across 12 days, along with increased humidity levels of 72%. For a closer look at February weather in Hongqiao, visit Hongqiao weather in February.
September and March exhibit stark contrasts in weather patterns. In September, temperatures range from a mild 17°C (62°F) at night to a scorching 39°C (102°F) during the day, with an average of 27°C (81°F). This month experiences relatively low precipitation, totaling 65 mm (2.5 in) spread over about 10 days, along with a humidity level of 67%. Conversely, March brings much cooler temperatures, with lows plummeting to 4°C (39°F) and daytime highs averaging 14°C (58°F), reaching up to 31°C (88°F). This month sees a significant increase in rainfall, totaling 156 mm (6.2 in) over approximately 20 days, and higher humidity at 81%. For a more detailed look at March weather, visit Hongqiao weather in March.
When comparing the weather between September and April, notable differences emerge. September boasts warmer temperatures, with an average of 27°C (81°F) and highs reaching up to 39°C (102°F). In contrast, April features a cooler average of 19°C (66°F), with maximum temperatures peaking at 33°C (92°F). While September experiences 65 mm (2.5 in) of precipitation over about 10 days, April is significantly wetter, seeing 151 mm (5.9 in) across 17 days. Additionally, humidity is higher in April at 82%, compared to September's 67%. For more details about April's weather conditions, you can check Hongqiao weather in April.
September and May present contrasting weather conditions. In September, temperatures range from a mild minimum of 17°C (62°F) to a scorching maximum of 39°C (102°F), with an average of 27°C (81°F). Precipitation is relatively low at 65 mm (2.5 in) over about 10 days, coupled with a humidity level of 67%. In stark contrast, May sees cooler temperatures, with a minimum of 10°C (51°F) and an average of 23°C (74°F), peaking at 36°C (97°F). However, it experiences significantly higher precipitation at 221 mm (8.7 in) across 17 days and elevated humidity at 86%. For more details, see Hongqiao weather in May.
In comparing the weather between September and June, both months share a similar average temperature of around 27°C (81°F). However, September typically experiences slightly warmer maximum temperatures, peaking at 39°C (102°F) compared to June's maximum of 36°C (97°F). Precipitation levels are notably higher in June, with 239 mm (9.4 in) falling over 17 days, in contrast to September's 65 mm (2.5 in) over 10 days. Additionally, June has a higher humidity level at 86%, which can make the heat feel more intense, while September’s humidity stands at 67%. For more detailed information, check out Hongqiao weather in June.
When comparing the weather in September to that of July, we observe notable differences. September experiences a minimum temperature of 17°C and an average temperature of 27°C, making it slightly cooler than July, which has a minimum of 20°C and an average of 30°C. Both months can reach a maximum temperature of 39°C, but July has significantly higher precipitation, totaling 178 mm over 12 days, compared to September's 65 mm over 10 days. The humidity is also noticeably higher in July at 89%, compared to 67% in September. For more detailed information, you can check Hongqiao weather in July.
In comparison to August, September experiences slightly cooler temperatures, with average highs of 27°C (81°F) compared to August's warmer average of 30°C (86°F). The minimum temperatures in September are also lower, at 17°C (62°F), whereas August's minimums start at 22°C (71°F). August is marked by higher humidity levels at 87%, contrasted with September's relatively lower humidity of 67%. Additionally, September sees less precipitation, recording 65 mm (2.5 inches) over about 10 days, while August experiences 115 mm (4.5 inches) across 14 days. For more details, you can visit Hongqiao weather in August.
September typically features warmer temperatures compared to October, with an average of 27°C (81°F) and highs reaching up to 39°C (102°F). In contrast, October sees a noticeable drop in average temperature to 19°C (67°F), with minimums plummeting to 9°C (49°F). While both months experience similar humidity levels of 67%, October tends to have slightly more precipitation, averaging 73 mm over 11 days, compared to September’s 65 mm over 10 days. For more detailed information, you can check Hongqiao weather in October.
September's weather is characterized by warm temperatures, with a minimum of 17°C (62°F) and an average of 27°C (81°F), reaching highs of up to 39°C (102°F). This month experiences moderate humidity at 67% and sees around 65 mm (2.5 in) of precipitation over 10 days. In contrast, November brings a notable drop in temperatures, with a minimum of 5°C (41°F) and an average of 15°C (58°F), while highs reach 30°C (86°F). Despite slightly lower rainfall at 84 mm (3.3 in) over 9 days, the humidity increases to 75%, contributing to a cooler, more damp atmosphere. For more detailed insights on November weather, check out Hongqiao weather in November.
September and December present a stark contrast in weather conditions. In September, temperatures range from a minimum of 17°C (62°F) to a scorching maximum of 39°C (102°F), with an average of 27°C (81°F). This month also sees higher humidity at 67% and more precipitation, totaling 65 mm (2.5 in) over about 10 days. Conversely, December experiences much cooler temperatures, with a minimum of -2°C (28°F) and a maximum of 23°C (74°F), yielding an average of only 9°C (48°F). The month brings less rainfall, with only 45 mm (1.8 in) falling over 9 days, and a slightly higher humidity level of 75%. For more details, you can check Hongqiao weather in December.
As summer bids farewell, September in Hongqiao ushers in a notable shift in weather, presenting a delightful transition from the sweltering heat of the preceding months. With an average temperature that comfortably rests at 27°C, days become more pleasant, though occasional spikes can still reach up to a sizzling 39°C. Unlike the more parched summer months, September experiences a moderate level of precipitation, with rain gracing the region on about 10 days, bringing a refreshing balance to the otherwise warm climate. Coupled with a humidity level of 67%, this month provides a unique atmosphere that feels both vibrant and invigorating. For those looking to understand this intriguing climate pattern further, you can explore more at Hongqiao Climate.