Last updated: August 21, 2025
In September, Wuxi, China experiences a dynamic weather pattern characterized by warm temperatures and noticeable humidity. The maximum temperature reaches a sweltering 34°C (93°F), while the average dips to a comfortable 25°C (77°F). Nighttime brings a refreshing minimum of 17°C (63°F), ideal for evening strolls. However, this month also sees its share of precipitation, with 121 mm (4.8 in) of rain distributed over 12 days, contributing to an overall humidity level of 81%. Travelers and locals alike should prepare for both sunny spells and occasional downpours during this vibrant transitional month.
In September, Wuxi experiences a delightful transition as summer gives way to early autumn. With minimum temperatures settling at a comfortable 17°C (63°F) and averages reaching 25°C (77°F), the weather remains pleasantly warm, making it ideal for outdoor exploration. The maximum temperature can soar to 34°C (93°F), ensuring that the tail end of summer lingers just a bit longer. This month marks a significant shift from the oppressive heat of July and August, with a gradual decline in temperature that signals the arrival of cooler days ahead. As the humidity begins to wane, one can enjoy the vibrant autumn scenery that Wuxi has to offer, perfect for both locals and visitors alike.
In September, Wuxi experiences a significant shift as precipitation begins to decrease following the peak of the summer monsoon. This month receives 121 mm (4.8 in) of rain over 12 days, marking a transition towards drier autumn weather. While the total rainfall drops compared to the previous months, September remains notably moist, reflecting the lingering humidity from summer. Compared to July and August, which witness the heaviest rainfall, September's precipitation indicates a gradual but steady decline, setting the stage for the cooler and less rainy months ahead. The changing patterns highlight a harmonious ebb and flow of the region’s climate, as Wuxi shifts from the peak rainfall season into the more temperate fall.
In September, Wuxi, China experiences a notable shift in humidity, with levels dropping to 81% after a summer peak. This decrease follows months of high humidity, culminating in 93% during the sweltering July, which is often the wettest part of the year. As autumn approaches, September’s 81% humidity offers a refreshing contrast, hinting at the gradual transition from the sticky summer months. This trend of fluctuating humidity is typical for the region, with levels remaining relatively high through October before further easing into the cooler months ahead. The variability reflects Wuxi's maritime climate, where humidity plays a vital role in shaping the local weather patterns.
As summer gives way to autumn in September, Wuxi, China experiences a UV Index of 10, indicating a very high exposure category that calls for caution. This marks a slight decline from the extreme levels seen in the sweltering months of June, July, and August, where the index peaked at 11. Despite this decrease, the burn time remains critical at just 15 minutes, urging residents and visitors to stay protected from harmful rays. This trend highlights a transitional phase; while September offers a reprieve from the most intense summer sun, it's crucial to remain vigilant as UV levels can still pose risks. For more detailed insights, check out the Wuxi UV Index.
UV Risk Categories
September in Wuxi, China, welcomes a transition into autumn with 259 hours of sunshine, offering a delightful balance to the summer’s peak. Following the vibrant months of August, which boasted an impressive 306 hours of sun, September retains a significant amount of sunshine, even as days gradually shorten. This month marks a noticeable dip from the summer surge, yet it still shines brighter than the earlier months of the year, reflecting a consistent trend of increasing daylight from January’s mere 157 hours. As the year progresses towards October with its 239 hours, Wuxi enjoys a lingering warmth, making September a perfect time for outdoor activities amidst the changing leaves and mild temperatures.
As summer fades, September in Wuxi, China, presents a notable shift in weather patterns, with a 49% chance of sunny days. This likelihood signals a departure from the cloudier months of summer, particularly July, where the sun shone only 19% of the time. As autumn approaches, the chances of sunshine gradually improve, making September an ideal time for outdoor activities before the cooler months set in. While not the sunniest month of the year, September’s favorable weather ties closely with the trends of increasing sun exposure leading into the autumn, enhancing the city's appeal for visitors and residents alike.
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, the wind begins to settle into a comfortable rhythm, with an average speed of 3.9 m/s (9 mph). This slight increase from the more languorous breezes of August mirrors the transition of seasons, as nature prepares for autumn's arrival. The wind in September remains robust, neither too gentle nor too strong, but consistent, echoing the patterns observed in the spring months. Leading into the crispness of October, the gentle embrace of September wind invites residents and visitors alike to enjoy outdoor activities amid the changing colors of nature, highlighting a perfect blend of warmth and coolness that heralds the season's shift.
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 features a warm and humid climate with average temperatures around 25°C (77°F), reaching highs of 34°C (93°F) and experiencing significant precipitation of 121 mm (4.8 in) over 12 days. In contrast, January brings much cooler weather, characterized by average temperatures of just 5°C (41°F), with lows plunging to -7°C (19°F). Rainfall is less frequent in January, totaling 69 mm (2.7 in) across approximately 8 days, accompanied by lower humidity levels of 70%. This stark difference in temperatures and precipitation highlights the seasonal transition from the warmth of late summer to the chill of winter. For more detailed information, you can check Wuxi weather in January.
In September, the weather is markedly warmer, with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 34°C (93°F) and an average of 25°C (77°F). This month also sees significant rainfall, with 121 mm (4.8 in) of precipitation spread over 12 days, and humidity levels averaging 81%.
In contrast, February experiences much cooler conditions, with temperatures starting at a minimum of -4°C (25°F) and peaking at 22°C (71°F), leading to an average of 6°C (44°F). The month is characterized by lower precipitation levels of 72 mm (2.8 in) over just 10 days and slightly reduced humidity at 73%. For more detailed information on February weather, you can check Wuxi weather in February.
In comparing the weather of September and March, it's evident that September is significantly warmer, with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 34°C (93°F), while March experiences cooler conditions, with temperatures ranging from 1°C (33°F) to 26°C (80°F). Both months see similar precipitation levels, with September receiving 121 mm (4.8 in) and March receiving 90 mm (3.6 in), each experiencing rain on about 12 days. Despite the precipitation, humidity remains constant at 81% in both months, creating a consistently humid environment. For a closer look at the specifics of March weather, visit Wuxi weather in March.
September and April showcase distinctly different weather patterns. In September, temperatures range from a minimum of 17°C (63°F) to a maximum of 34°C (93°F), with an average of 25°C (77°F). The month experiences considerable humidity at 81% and sees about 121 mm (4.8 in) of precipitation spread over 12 days. In contrast, April brings cooler temperatures, with a minimum of 5°C (42°F) and a maximum of 30°C (86°F), averaging 17°C (62°F). April is slightly less humid at 87% and receives less rainfall, totaling 81 mm (3.2 in) over 10 days. For more details, check out Wuxi weather in April.
In comparing the weather of September and May, September tends to be slightly warmer on average, with temperatures ranging from a low of 17°C (63°F) to a high of 34°C (93°F), while May has a more moderate range from 12°C (54°F) to 35°C (96°F). Humidity levels are higher in May, reaching 87%, compared to 81% in September, which can make the warmer days feel more oppressive. Both months experience a similar amount of rainfall, with September receiving about 121 mm (4.8 in) over 12 days and May slightly edging out with 125 mm (4.9 in) over 10 days. For more detailed information, check out Wuxi weather in May.
September and June present distinct weather patterns, with both months enjoying warm temperatures. September typically boasts a minimum temperature of 17°C (63°F) and an average of 25°C (77°F), while June starts slightly warmer with a minimum of 18°C (65°F) and an average of 25°C (78°F). However, June tends to be hotter at the peak, reaching up to 36°C (97°F), compared to September's maximum of 34°C (93°F). In terms of precipitation, June is the wetter month, receiving 187 mm (7.4 in) over 13 days, while September sees 121 mm (4.8 in) across 12 days. The humidity is notably higher in June at 89%, compared to September’s 81%. For more detailed insights, you can check Wuxi weather in June.
In comparing the weather between September and July, we can observe notable differences. September experiences milder temperatures, with a minimum of 17°C (63°F) and an average of 25°C (77°F), while July sees higher temperatures, starting at a minimum of 20°C (69°F) and averaging 29°C (84°F), peaking at a scorching 40°C (103°F). Additionally, July is considerably wetter, receiving 283 mm (11.2 in) of rain over 15 days, compared to September's 121 mm (4.8 in) over 12 days. Humidity levels are also higher in July at 93%, compared to September's relatively lower 81%. For more details on July weather, check out Wuxi weather in July.
September weather is generally milder compared to August, with lower average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 34°C (93°F), compared to August's warmer range of 22°C (72°F) to 37°C (99°F). Additionally, September experiences slightly less precipitation at 121 mm (4.8 in) over about 12 days, while August sees 158 mm (6.2 in) over 14 days. Humidity levels also decrease in September to 81%, down from August’s 91%. Overall, September marks a transition to cooler and drier conditions. For more detailed insights, you can check Wuxi weather in August.
In September, the weather is typically warmer, with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 34°C (93°F), while October sees cooler conditions, with temperatures dropping to a minimum of 10°C (50°F) and a maximum of 31°C (88°F). Additionally, September tends to be wetter, receiving 121 mm (4.8 in) of precipitation over 12 days, compared to October's 55 mm (2.2 in) over just 7 days. Humidity levels remain relatively consistent, with September at 81% and October slightly lower at 80%. For more detailed information, you can check Wuxi weather in October.
September and November present quite contrasting weather patterns. In September, temperatures range from a minimum of 17°C (63°F) to a maximum of 34°C (93°F), with an average of 25°C (77°F). The month experiences higher precipitation of 121 mm (4.8 in), occurring over 12 days, and a humidity level of 81%. In contrast, November sees much cooler temperatures, with a minimum of 3°C (38°F) and an average of 14°C (57°F), peaking at 26°C (78°F). Precipitation drops significantly to 50 mm (2.0 in) over 8 days, while humidity remains slightly higher at 82%. For more insights on the weather in November, check out Wuxi weather in November.
In September, the weather tends to be warm and humid, with temperatures ranging from a comfortable minimum of 17°C (63°F) to a scorching maximum of 34°C (93°F). This month also sees significant rainfall, averaging 121 mm (4.8 in) over about 12 days, contributing to a humidity level of 81%.
In contrast, December brings a stark change, featuring much cooler temperatures that range from a chilly minimum of -6°C (22°F) to a maximum of 18°C (64°F), with an average of 7°C (45°F). Precipitation decreases to 50 mm (2.0 in) across roughly 7 days, and humidity levels drop slightly to 77%. Overall, December's weather presents a crisp and dry contrast to the warmth and humidity of September. For more specific details, you can check Wuxi weather in December.
As September arrives in Wuxi, it marks a distinct transition from the sweltering summer months, with temperatures beginning to cool down while still featuring warm days. The average temperature settles at a pleasant 25°C, providing comfortable conditions for outdoor activities. However, this month also brings a notable increase in precipitation, with frequent rainy days that contribute to a humidity level of 81%. This blend of warmth and moisture creates a vibrant atmosphere, making September an ideal time to enjoy the lush landscapes of Wuxi. For more details about how the weather varies throughout the year, check out Wuxi Climate.