Last updated: August 21, 2025
September in Wuxi, China, presents a dynamic climate with temperatures ranging from a mild 17°C (63°F) at night to a sweltering 39°C (102°F) during the day, averaging around 27°C (81°F). This month witnesses approximately 59 mm (2.3 in) of rainfall across 9 days, contributing to a humidity level of 67% that can make the heat feel even more intense. As summer fades into autumn, Wuxi’s weather offers a unique blend of warmth and occasional showers, making it an intriguing month for both locals and visitors.
In September, Wuxi, China, experiences a delightful transition as summer begins to wane. Temperatures range from a comfortable 17°C (63°F) at night to a warm 39°C (102°F) during the day, with an average of 27°C (81°F). This month marks a gradual decline from the intense heat of July and August, yet retains a lingering warmth that's ideal for enjoying the city's beautiful outdoor spaces. As the days shorten and cool breezes start to blow, September offers a harmonious blend of warmth and refreshing air, making it a perfect time to explore Wuxi's scenic landscapes and vibrant culture.
In September, Wuxi experiences a noticeable dip in precipitation, receiving 59 mm (2.3 in) over just 9 days. This marks a transition from the summer’s heavier rains, with August's 107 mm (4.2 in) still fresh in memory. The tapering off of rainfall reflects the gradual shift toward autumn, as the wet months of June and July, which saw 200 mm (7.9 in) and 177 mm (7.0 in) respectively, begin to recede. The relatively modest rainfall in September sets the stage for a drier October, hinting at the end of the monsoon influence in the region. This trend underscores a seasonal pattern where Wuxi balances between lush summer downpours and the quieter, drier days of fall.
In September, Wuxi, China, experiences a noticeable dip in humidity, dropping to 67%, a welcome relief as the summer heat begins to wane. This decline marks a significant shift from the height of the summer months, where humidity levels soared to a peak of 89% in July. Following an extended period of oppressive moisture, September's more moderate humidity creates a pleasant transition into autumn. As the year progresses, humidity levels stabilize around 67% in both September and October, suggesting a gradual shift towards cooler and drier conditions, further enhancing the region's comfort as it moves into the fall season. This seasonal ebb and flow of humidity offers insight into Wuxi's climate dynamics, underscoring the importance of September as a turning point in the yearly weather cycle.
As summer gives way to autumn in September, Wuxi, China, experiences a notable shift in its UV Index, dropping to 10, signaling a very high exposure category with a burn time of 15 minutes. This decline from the extreme levels of July and August marks a slight reprieve but still necessitates caution for those spending time outdoors. The UV Index is consistently high during these months, underscoring the importance of sun protection practices. As we look forward to the gradual decrease in UV radiation into October, it remains crucial to stay informed and prepared. For more detailed insights, check the full report at Wuxi UV Index.
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September in Wuxi, China, boasts 250 hours of sunshine, marking a delightful transition into autumn. After a summer of basking in the generous light of 306 hours in July and 321 hours in August, the sun begins to share its warmth with a gentle touch. This month reflects a notable drop in daylight compared to the peak summer months, yet it remains a vibrant period for outdoor activities, encouraged by the lingering warmth and brightness. Following a gradual decline from the summer highs, the sunlight hours in September ensure that residents and visitors can still enjoy the beauty of this scenic city before the cooler days of October arrive, which sees a further reduction to 184 hours. The trend in Wuxi's sunshine hours emphasizes the city's transition through a rich tapestry of seasons, where each month brings its own character, perfect for those who relish the changing moods of nature.
September in Wuxi, China, marks a notable return to sunny days, boasting a 55% chance of sunshine that rivals the clear skies seen in January and December. This month stands out distinctly as the summer fades, leaving behind a lingering warmth that is less common in the preceding months, where chances of sun dip below 40%. The gradual rise in sunlight from the depths of winter through the spring's lackluster offerings sets the stage for a more vibrant September, making it an ideal time to enjoy the outdoors as the weather transitions into the cooler autumn months.
As summer fades into autumn, September in Wuxi, China, brings a gentle shift in daylight duration, seeing about 12 hours of light each day. This marks a slight decrease from the sun-soaked heights of 13 hours during the peak summer months of June through August. The steady transition showcases a graceful rhythm to the seasons, where daylight gradually diminishes in preparation for the cooler months ahead. As nature begins its shift, the days remain plentiful enough to enjoy the lingering warmth, before the daylight further recedes to 11 hours in October, paving the way for the cozy embrace of fall.
As September unfolds in Wuxi, China, the gentle winds begin to soften, with an average wind speed of 1.8 m/s (4 mph). This marks a slight dip from the breezy months of July and August, which boasted stronger gusts at 2.6 m/s and 2.0 m/s, respectively. The trend reflects a modest seasonal transition, transitioning from the heightened warmth of summer towards the crispness of autumn. Historically, September winds are among the calmer of the year, creating a serene atmosphere perfect for outdoor strolls and enjoying the changing scenery. The blend of tranquility in the air and the beauty of the city beckons both locals and visitors to embrace the charm of early autumn in Wuxi.
Weather in Wuxi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Wuxi, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present strikingly contrasting weather patterns. In September, temperatures range from a mild 17°C (63°F) at night to a scorching high of 39°C (102°F) during the day, with an average of 27°C (81°F). The month sees around 59 mm (2.3 in) of rainfall over 9 days and a humidity level of 67%. Conversely, January experiences much cooler conditions, with temperatures dropping to a minimum of -3°C (26°F) and a maximum of 23°C (74°F), averaging only 7°C (45°F). Despite a similar number of rainy days at 9, January's precipitation totals around 56 mm (2.2 in), and humidity remains slightly lower at 66%. For more details, check out Wuxi weather in January.
September and February present striking contrasts in weather. In September, temperatures are generally warm, with a minimum of 17°C (63°F) and an average of 27°C (81°F), peaking at a sweltering 39°C (102°F). The month experiences some humidity at 67% and sees around 59 mm (2.3 in) of precipitation over 9 days. In contrast, February is much colder, with temperatures ranging from a chilly minimum of -4°C (26°F) to an average of 9°C (49°F), and a maximum of 27°C (81°F). This month has higher precipitation at 77 mm (3.0 in) spread over 12 days and slightly elevated humidity at 72%. For more insights on February conditions, check out Wuxi weather in February.
In comparing the weather between September and March, it's clear that September is significantly warmer, with average temperatures reaching 27°C (81°F) and maximums peaking at 39°C (102°F). In contrast, March sees much cooler temperatures, with an average of 14°C (58°F) and maximums only hitting 31°C (88°F). Additionally, March experiences notably higher rainfall, totaling 143 mm (5.6 in) over 19 days compared to September's 59 mm (2.3 in) over 9 days. The humidity is also higher in March, at 81%, compared to September's 67%. For more detailed information, you can check Wuxi weather in March.
September and April present contrasting weather patterns. In September, temperatures range from a comfortable 17°C (63°F) to a sizzling 39°C (102°F), with an average of 27°C (81°F), ideal for outdoor activities. However, it is also marked by moderate humidity at 67% and some precipitation, averaging 59 mm (2.3 in) over about 9 days. In contrast, April experiences cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 33°C (92°F), leading to an average of 19°C (66°F). April is significantly wetter, receiving 125 mm (4.9 in) of rain over 17 days, coupled with higher humidity levels at 82%. For more detailed information, visit Wuxi weather in April.
In comparing the weather patterns of September and May, September generally offers warmer temperatures, ranging from a minimum of 17°C (63°F) to a maximum of 39°C (102°F), with an average of 27°C (81°F). In contrast, May presents cooler conditions, with temperatures starting at a minimum of 11°C (51°F) and reaching a maximum of 37°C (99°F), averaging 24°C (75°F). However, May tends to be much wetter, receiving a significant 183 mm (7.2 in) of precipitation over 16 days, compared to September's 59 mm (2.3 in) over just 9 days. Additionally, May's humidity is notably higher at 86%, compared to September's 67%. For more detailed information, check Wuxi weather in May.
In September, the weather features a similar minimum temperature of 17°C (63°F) as June, with an average high of 27°C (81°F) that feels pleasantly warm. However, September can reach higher maximum temperatures of up to 39°C (102°F), indicating sporadic heatwaves. Precipitation is significantly lower in September at 59 mm (2.3 in) over 9 days, compared to June’s much wetter conditions, which see 200 mm (7.9 in) spread across 16 days. Additionally, humidity drops in September to 67%, down from June’s more oppressive 86%. For a detailed look at the conditions, check out Wuxi weather in June.
September weather in Wuxi is generally milder than in July, with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 39°C (102°F), compared to July's warmer range of 21°C (69°F) to 39°C (103°F). Additionally, September experiences less rainfall, totaling 59 mm (2.3 in) over 9 days, whereas July sees significantly higher precipitation at 177 mm (7.0 in) across 11 days. Humidity levels are also lower in September at 67%, while July maintains a much stickier environment with humidity peaking at 89%. For more detailed information, you can check Wuxi weather in July.
In comparing the weather between August and September, significant differences emerge. September experiences slightly lower temperatures, with minimums of 17°C (63°F) and an average of 27°C (81°F), compared to August's minimum of 22°C (72°F) and average of 30°C (87°F). While the maximum temperature in September reaches up to 39°C (102°F), August sees a peak of 40°C (104°F). Humidity levels are also notably different, dropping from 87% in August to 67% in September, contributing to a more comfortable feel during the latter month. However, September has fewer precipitation days, totaling 9, which is a reduction from August's 14 days of rain, despite receiving 59 mm (2.3 in) compared to August's 107 mm (4.2 in). For more detailed insights, you can check Wuxi weather in August.
In September, the weather features warm temperatures, with a minimum of 17°C (63°F) and an average high of 27°C (81°F), alongside occasional peaks reaching up to 39°C (102°F). The month sees about 59 mm (2.3 in) of precipitation over 9 days, maintaining a consistent humidity level of 67%. In contrast, October brings cooler conditions, with temperatures dropping to a minimum of 10°C (51°F) and an average of 20°C (68°F), while still allowing for highs up to 38°C (100°F). Precipitation increases slightly to 74 mm (2.9 in) over 11 days, with humidity remaining constant at 67%. For more detailed insights, you can check out Wuxi weather in October.
In comparing the weather between September and November, significant differences become apparent. September features warmer temperatures, with a minimum of 17°C (63°F) and an average of 27°C (81°F), peaking at a scorching 39°C (102°F). In contrast, November sees much cooler conditions, with a minimum of just 6°C (42°F) and an average of 15°C (59°F), while the high reaches a comfortable 30°C (86°F). Additionally, September experiences 59 mm (2.3 in) of rainfall over about 9 days, whereas November has slightly more precipitation at 76 mm (3.0 in) across 11 days. Humidity levels also rise from 67% in September to 75% in November, contributing to a noticeably different feel in the air. For more detailed information, you can refer to Wuxi weather in November.
September and December display contrasting weather patterns, reflecting the transition from summer to winter. In September, temperatures range from a minimum of 17°C (63°F) to a maximum of 39°C (102°F), with an average of 27°C (81°F), creating a hot and humid environment with 59 mm (2.3 in) of precipitation over 9 days. On the other hand, December experiences much cooler conditions, with temperatures dipping as low as -2°C (28°F) and peaking at 25°C (78°F), averaging around 9°C (48°F). Although it receives slightly less rainfall at 49 mm (1.9 in) over 10 days, December's humidity is higher at 75%. For more insights on December weather, visit Wuxi weather in December.
As September rolls into Wuxi, the weather begins to showcase a captivating transition, setting itself apart from the hotter summer months. While temperatures still manage to reach sweltering highs, the average climate becomes noticeably more comfortable, inviting outdoor activities and adventures. Unlike the heavy rains typical of earlier months, September sees a decrease in precipitation, though humidity remains a consistent companion. This balance of warmth and occasional showers makes September a delightful time to explore Wuxi's natural beauty. For a detailed look into the climate trends throughout the year, visit Wuxi Climate.