Last updated: August 21, 2025
In Wuxi, China, September welcomes a mix of warmth and humidity, with average temperatures hovering around 25°C (77°F), peaking at a sweltering 37°C (98°F). The month sees an occasional respite from the heat, as minimum temperatures dip to a comfortable 16°C (60°F). Rainfall is a notable feature, with 98 mm (3.9 in) of precipitation spread across about 9 days, contributing to an overall humidity level of 75%. As the summer wanes, September offers a vibrant climate for both locals and visitors, blending summer's warmth with hints of autumn.
In September, Wuxi experiences a delightful transition as summer begins to wane. With minimum temperatures averaging around 16°C (60°F) and maximums peaking at 37°C (98°F), the days remain warm, though evenings offer a refreshing respite. The average temperature settles at a comfortable 25°C (77°F), making it an ideal time for outdoor activities and explorations. This month marks a notable shift from the intense heat of July and August, yet it still retains a vibrancy that invites visitors to enjoy the lingering summer warmth before embracing the cooler autumn months ahead. The climate is perfect for enjoying the natural beauty of Wuxi, particularly as the leaves start to hint at the colors of fall.
In September, Wuxi experiences a noteworthy precipitation amount of 98 mm (3.9 in), marking a transition as the city shifts from the peak summer rains of July and August into the milder autumn months. With rain occurring over 9 days, this represents a decline from the wetter summer, yet it still contributes significantly to the overall annual rainfall. Compared to the deluge of July with 272 mm and August’s 157 mm, September maintains a moderate level, reflecting a gradual decrease in total precipitation as the region prepares for the cooler temperatures ahead. This trend signifies a shift in Wuxi's weather patterns, providing a perfect backdrop for the onset of autumn.
In Wuxi, China, September brings a noticeable shift in humidity as it cools off from the summer months. With an average humidity of 75%, this month marks a decline from the peak levels seen in July and August, when humidity reached 90% and 88%, respectively. This drop suggests a transition towards the more temperate conditions of autumn, although the air remains relatively moist compared to the start of the year. Despite this decrease, September's humidity is still higher than in the colder months ahead, positioning it within the context of Wuxi's overall humid climate, where levels typically fluctuate from 70% to 90% throughout the year.
As September rolls into Wuxi, China, residents and visitors alike should prepare for a notable drop in the UV Index compared to the sweltering summer months. With a UV Index of 10, categorized as very high, exposure time requiring caution returns to 15 minutes—a refreshing change from the extreme levels of 11 seen from May through August. This significant decline reflects the gradual transition towards milder autumn conditions, yet vigilance is still essential as September maintains relatively high UV levels. Those engaging in outdoor activities should remember to apply sunscreen and seek shade during peak hours. To stay updated and safeguard your skin, visit Wuxi UV Index.
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As summer gradually gives way to autumn, September shines warmly in Wuxi, China, delivering an impressive 254 hours of sunlight. This marks a slight decrease from the sun-drenched days of August, which boasted a stellar 295 hours. However, September still outshines the earlier months, showcasing a strong continuum of light following the peak summer months. Notably, daylight hours take a step back from July's and August's zenith, yet they remain significantly bright compared to January's mere 149 hours. This trend hints at a subtle transition, embracing the lingering warmth of summer while gently easing into the cozier embrace of fall. The vibrant atmosphere of September offers a perfect balance, inviting both outdoor activities and moments of tranquility amidst the changing season.
As September rolls in, Wuxi, China, welcomes a refreshing boost in sunny weather, with a 53% chance of sunshine that surpasses the summer months of July and August. This increase marks a notable shift from the preceding hotter months, where the likelihood of clear skies dips to as low as 21%. The favorable September conditions set the stage for a pleasant transition into autumn, with sunny days becoming more common as the year progresses toward October's 44% chance of sun. This trend illustrates how September serves as a bridge to the more consistently sunny months ahead, enticing residents and visitors alike to enjoy outdoor activities in the mild climate.
As summer wanes, September in Wuxi, China, greets the arrival of autumn with a daylight duration of 12 hours. This marks a subtle decline from the peak of 14 hours in June, reflecting a gradual shift in the seasons. Throughout the year, Wuxi experiences a gentle ebb and flow in daylight hours, starting with 10 hours in January and gradually increasing to a lively 14 hours in midsummer. However, after reaching this zenith, daylight begins to recede, with September's 12 hours signaling a precursor to the shorter days of fall and winter. This seasonal dance embodies Wuxi's dynamic climate, where each month provides a unique blend of light and shadow.
As September unfolds in Wuxi, China, the average wind speed reaches a gentle 2.7 m/s (6 mph), creating a refreshing atmosphere that hints at the changing seasons. This month sees a slight uptick from the calmer summer months of June and August, where winds were notably lighter at 2.4 m/s (5 mph). The wind speed in September maintains a steady rhythm, echoing the trend of early fall as temperatures begin to cool. Interestingly, September's breezes mirror those of May and October, reflecting a transitional period where nature prepares for the vibrant autumn ahead. With this mild wind, Wuxi embraces a serene transition, inviting both locals and visitors to savor the crispness in the air.
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 showcase stark contrasts in weather. September generally experiences warmer temperatures, with daily averages around 25°C (77°F) and peaks reaching up to 37°C (98°F), alongside higher humidity levels at 75%. In contrast, January brings chilly conditions, with average temperatures dropping to 5°C (41°F) and a frosty minimum of -9°C (16°F). Precipitation is slightly lower in January, totaling 64 mm (2.5 in) over about 8 days, compared to September's 98 mm (3.9 in) over 9 days. For more detailed insights on January weather, visit Wuxi weather in January.
September and February present stark contrasts in weather. September boasts warmer temperatures, with a minimum of 16°C (60°F) and an average of 25°C (77°F), reaching highs of 37°C (98°F). The month also experiences significant humidity at 75% and considerable precipitation of 98 mm (3.9 in) over approximately 9 days. In contrast, February offers a much cooler climate, with temperatures ranging from a low of -8°C (18°F) to a maximum of 26°C (80°F) and an average of just 7°C (44°F). Precipitation is lower in February at 68 mm (2.7 in) and the humidity remains relatively similar at 73%. For further details on February weather, check out Wuxi weather in February.
September and March present contrasting weather patterns. In September, temperatures regularly peak at a high of 37°C (98°F), with an average of 25°C (77°F) and a relatively warm minimum of 16°C (60°F). The month experiences significant humidity at 75% and sees about 98 mm (3.9 in) of precipitation over approximately 9 days. In contrast, March is noticeably cooler, with maximum temperatures reaching 30°C (86°F) and an average of 13°C (55°F), while the minimum drops to 1°C (35°F). Despite similar rainfall at 99 mm (3.9 in), March has slightly more rainy days, totaling 12, coupled with higher humidity levels at 82%. For a closer look at the weather specifics during March, you can check Wuxi weather in March.
When comparing the weather in September and April, distinct differences emerge. September typically experiences warmer temperatures, with a minimum of 16°C (60°F) and an average of 25°C (77°F), peaking at a high of 37°C (98°F). In contrast, April starts cooler, with minimum temperatures dipping to 6°C (42°F) and an average of 17°C (64°F), reaching a maximum of 33°C (92°F). Precipitation is slightly higher in September, totaling 98 mm (3.9 in) over 9 days, compared to April's 79 mm (3.1 in) over the same number of days. Additionally, while September has a humidity level of 75%, April is notably more humid at 86%. For further details on April weather, check out Wuxi weather in April.
In comparing the weather of September and May, we see notable differences in temperature and precipitation patterns. September tends to have warmer average temperatures, with a minimum of 16°C (60°F) and a maximum of 37°C (98°F), while May features cooler conditions, starting at a minimum of 11°C (53°F) and reaching a maximum of 36°C (98°F). May also experiences more rainfall, with 131 mm (5.2 in) over 10 days compared to September's 98 mm (3.9 in) over 9 days. Additionally, the humidity is slightly higher in May at 85%, compared to September's 75%. For more detailed insights, you can explore Wuxi weather in May.
September and June both feature warm temperatures, with September averaging 25°C (77°F) and June averaging slightly warmer at 26°C (79°F). Both months experience maximum temperatures reaching up to 37°C (98°F in September and 99°F in June). However, June is considerably wetter, receiving 232 mm (9.1 in) of precipitation over 14 days compared to September's 98 mm (3.9 in) across 9 days. Additionally, humidity levels are higher in June at 85%, compared to 75% in September. For more details on June weather specifically, visit Wuxi weather in June.
In comparing the weather between September and July, notable differences in temperature and precipitation patterns emerge. September experiences a lower average temperature, with a minimum of 16°C (60°F) and a maximum of 37°C (98°F), compared to July's warmer range of 20°C (69°F) to 39°C (102°F). While September has a more manageable average humidity of 75%, July is characterized by a higher humidity level of 90%. Additionally, September receives significantly less precipitation, accumulating 98 mm (3.9 in) over 9 days, in contrast to July's 272 mm (10.7 in) over 16 days. This makes September a drier month with more favorable weather conditions for outdoor activities. For those interested in detailed July weather patterns, you can check Wuxi weather in July.
In comparing the weather between September and August, we see a shift in both temperature and precipitation patterns. September brings slightly cooler temperatures, with a minimum of 16°C (60°F) and an average of 25°C (77°F), compared to August's warmer minimum of 20°C (69°F) and average of 29°C (85°F). Despite both months reaching similar maximums of 37°C (98°F) in September and 37°C (99°F) in August, September experiences significantly less rainfall, totaling 98 mm (3.9 in) over 9 days, compared to August’s 157 mm (6.2 in) over 13 days. Additionally, humidity levels are lower in September at 75%, whereas August sees a higher humidity rate of 88%. This shift results in a more comfortable atmosphere in September, making it a preferable choice for outdoor activities. For a detailed overview of August's weather, you can refer to Wuxi weather in August.
In September, the weather is generally warm with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 37°C (98°F), accompanied by an average temperature of 25°C (77°F). The month sees considerable precipitation, with 98 mm (3.9 in) falling over 9 days, and humidity levels remain high at 75%. In contrast, October experiences cooler temperatures, with lows dropping to 8°C (46°F) and an average of 19°C (66°F), while still reaching highs of 37°C (99°F). Precipitation decreases to 53 mm (2.1 in) over just 6 days, and humidity remains relatively steady at 76%. For more details on October's climate, you can visit Wuxi weather in October.
September and November present contrasting weather patterns. In September, temperatures range from a minimum of 16°C to a maximum of 37°C, creating a warm average of 25°C, accompanied by significant humidity at 75% and 98 mm of precipitation over about 9 days. In contrast, November sees much cooler temperatures, with a minimum of 0°C, an average of 13°C, and a maximum of 29°C. Precipitation decreases to 42 mm over 7 days, while humidity rises slightly to 84%. For more detailed information, you can refer to Wuxi weather in November.
September and December present contrasting weather patterns. In September, temperatures reach a minimum of 16°C (60°F) and can soar up to 37°C (98°F), with an average of 25°C (77°F). The month experiences a high level of precipitation at 98 mm (3.9 in) over about 9 days, coupled with a humidity of 75%. In stark contrast, December sees much cooler weather, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 22°C (73°F), averaging around 7°C (44°F). The amount of precipitation decreases significantly to 46 mm (1.8 in) over roughly 7 days, while humidity remains relatively high at 77%. For more detailed information, check out Wuxi weather in December.
As September rolls into Wuxi, the weather begins to shift, marking a transition from the intense summer heat to a more moderate climate. While the month still experiences warm temperatures, with highs reaching up to 37°C, the average temperature settles comfortably around 25°C, offering a pleasant retreat. While the humidity remains notable at 75%, the amount of rainfall at 98 mm across about 9 days provides a refreshing contrast to the dry spell of August. This blend of warmth and moisture sets September apart, making it a delightful time to explore the beauty of Wuxi. For a deeper insight into the city's climate, check out Wuxi Climate.