Last updated: August 21, 2025
September in Suzhou, China offers a delightful transition from summer to autumn, marked by a maximum temperature of 37°C (98°F) and a refreshing average of 21°C (70°F). The month boasts a surprisingly low minimum temperature of 4°C (40°F), providing a refreshing contrast during the evenings. With a mere 1 mm (0.0 in) of precipitation over the month and no recorded rainy days, the weather remains predominantly dry, complemented by a comfortable humidity level of 32%. This combination of warm days and cool nights creates an inviting atmosphere, perfect for exploring the city's rich cultural heritage and picturesque landscapes.
September in Suzhou, China marks a transition from the intense summer heat to more mild autumn conditions. With temperatures ranging from a minimum of 4°C (40°F) to a maximum of 37°C (98°F), the average sits comfortably at 21°C (70°F), presenting an inviting climate for outdoor activities. This month showcases a significant drop in nighttime temperatures compared to the scorching summer months of July and August, while still retaining a hint of warmth during the day. As the city prepares for autumn, residents and visitors alike can enjoy a blend of warm afternoons and cooler evenings, making it an ideal time to explore the scenic beauty of Suzhou.
September in Suzhou, China, marks an interesting point in the precipitation calendar, with only 1 mm of rainfall recorded, although no rain days were reported. This minimal precipitation showcases a significant decrease compared to the wet summer months of July and August, each experiencing about 9 mm over just a day. As autumn approaches, the trend clearly shifts towards drier conditions, leaving the preceding months of June through August behind as the season's wetter period. The respite from rain in September sets the stage for the typically drier months ahead, as the region transitions into October and November, both of which historically mirror September’s limited rainfall. This consistent pattern hints at a notable climatic rhythm in Suzhou’s weather.
In September, Suzhou, China, begins to experience a subtle shift in humidity, rising to 32% after the dry summer months of July and August, which recorded their lowest levels at just 25%. This increase marks a transition as the city moves towards autumn, following a trend of generally higher humidity levels in the later months of the year. As the temperatures cool, the humidity will continue to rise, peaking in November at 54%. This pattern highlights the changing climate throughout the year, where the humid conditions of autumn contrast sharply with the drier summer, making September a refreshing but transitional month in Suzhou's weather cycle.
As September rolls into Suzhou, China, residents should remain vigilant about sun safety, as the UV Index measures a notable 8, placing it in the very high exposure category. This marks a slight decrease from the blistering extremes of summer but still requires caution, with a burn time of just 15 minutes for unprotected skin. Following a trend visible throughout the warmer months, the UV Index peaked in June at an extreme 11 but has since shown a gradual decline. Nonetheless, the intensity of sunlight remains significant, reminding us that autumn doesn't mean the sun's rays are any less powerful. For more insights and updates on safe sun exposure, visit Suzhou UV Index.
UV Risk Categories
As summer gracefully transitions to autumn, September in Suzhou shines with an impressive 337 hours of sunshine. This month marks a slight decline from the vibrant peak of 372 hours in July, yet it remains a delightful backdrop for outdoor activities and explorations. Following the bustling warmth of summer, September's sunlight is generous but tempered, allowing for comfortable days that herald the approach of cooler weather. This trend of abundant sunshine continues from the lively days of late spring and summer, showing that while the longer days of July may be behind us, the sun still generously embraces Suzhou as it slowly edges toward fall.
In September, Suzhou, China, welcomes a promising increase in sunshine, with a 73% chance of clear skies. This marks a notable rise from the preceding months, as the summer warmth lingers and the rainy season begins to retreat. Following a succession of comparable sunny probabilities in July and August, September emerges as a standout month, connecting the vibrant atmosphere of summer with the more temperate embrace of autumn. As October arrives, the likelihood remains high at 69%, making the early fall an opportune time to enjoy Suzhou’s scenic beauty under bright, sunny skies.
As September arrives in Suzhou, China, the daylight begins to wane, transitioning from the vibrant summer months. With approximately 12 hours of daylight, this month marks a gentle decline from the 14 hours experienced in the peak of summer. Following a gradual upward trend from 9 hours in January to a summer high, September signals the shift towards autumn as daylight starts to taper off, preparing residents for the shorter days ahead. This rhythmic ebb and flow of daylight not only reflects the changing seasons but also sets a serene backdrop for Suzhou's rich cultural atmosphere, making it an enchanting time for both residents and visitors alike.
As September ushers in the transition from summer to autumn in Suzhou, the average wind speed settles at a gentle 3.3 m/s (7 mph). This slight dip from August's 3.4 m/s reflects a shift toward the calmer breezes of fall. Over the months, wind speeds have shown a gradual uptick from the early year lows of 3.2 m/s in January, peaking in the spring with a refreshing 4.2 m/s in April. This seasonal ebb and flow heralds a time of change, where the lighter winds of September invite leisurely strolls along Suzhou’s picturesque canals, framing the city’s vibrant landscapes in a soft, whispering breeze. As autumn approaches, one can sense the anticipation of cooler days ahead, making this moment a delightful pause in nature's rhythm.
Weather in Suzhou varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Suzhou, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present starkly contrasting weather conditions. In September, temperatures range from a cool 4°C (40°F) at night to a warm average of 21°C (70°F), peaking at a scorching 37°C (98°F) on hotter days. The month experiences little to no precipitation, with a low humidity level of 32%. In contrast, January is markedly colder, with temperatures dipping as low as -20°C (-4°F) and averaging around -7°C (19°F), reaching a maximum of just 11°C (52°F). Although precipitation remains minimal at 1 mm (0.1 in), the humidity increases to 47%, making the cold feel even more biting. For more detailed information, check out Suzhou weather in January.
In September, the weather is typically warm, with temperatures ranging from a cool 4°C (40°F) at night to a scorching 37°C (98°F) during the day, and an average of 21°C (70°F). The month experiences very little precipitation, contributing to a dry and comfortable atmosphere with humidity levels around 32%. Conversely, February presents a stark contrast, marked by chilly temperatures that can drop as low as -20°C (-4°F) and rarely exceed 17°C (63°F), averaging around -1°C (30°F). Despite a similar lack of rainfall, February's humidity is higher at 43%, creating a distinctly colder and damp environment. For more detailed insights about the February weather, you can refer to Suzhou weather in February.
September in Suzhou experiences a warm climate with temperatures ranging from a cool 4°C (40°F) to a sweltering high of 37°C (98°F), while averaging around 21°C (70°F). This month sees minimal precipitation, with just 1 mm recorded and no rainy days, alongside relatively low humidity at 32%. In contrast, March brings much cooler temperatures, with minimums plunging to -10°C (15°F) and maximums reaching 26°C (79°F), averaging 8°C (46°F). Like September, March also experiences no rainfall, but the humidity is slightly higher at 38%. This seasonal shift marks a significant change in weather patterns, indicative of the transition from the summer heat to the chill of late winter. For more details, check out Suzhou weather in March.
September typically offers a warm climate, with average temperatures reaching 21°C (70°F) and highs soaring up to 37°C (98°F). The month is characterized by low precipitation, recording just 1 mm (0.0 in) and experiencing no rainy days, which, along with a humidity level of 32%, creates a dry and pleasant atmosphere. In contrast, April presents cooler temperatures, with an average of 15°C (59°F) and a maximum of 31°C (89°F). This month sees slightly higher precipitation at 4 mm (0.2 in) over one rainy day, accompanied by a humidity of 36%. For more detailed insights, you can check Suzhou weather in April.
In comparing the weather of September and May, both months exhibit a similar temperature range, with minimums around 4°C (40°F) and averages at approximately 21°C (70°F). However, May tends to be slightly warmer at the upper end, peaking at 38°C (100°F) compared to September's maximum of 37°C (98°F). Precipitation levels differ as well, with May experiencing a bit more rain at 5 mm over one day, while September boasts dry conditions with no recorded precipitation. Both months maintain low humidity, with September at 32% and May at 30%. For more details on May weather, check out Suzhou weather in May.
In September, temperatures range from a cool minimum of 4°C (40°F) to a warm maximum of 37°C (98°F), with an average of 21°C (70°F), while June sees slightly higher temperatures with a minimum of 12°C (53°F) and an average of 25°C (78°F), also peaking at 37°C (98°F). Precipitation is minimal in September, with just 1 mm and no rainy days, compared to June, which receives a bit more rain at 8 mm across 2 days. Additionally, humidity is slightly higher in June at 27%, compared to September's 32%. For more detailed information on the weather in June, visit Suzhou weather in June.
Comparing the weather in September and July reveals some notable differences. September boasts a broader temperature range, with a minimum of 4°C (40°F) and a maximum of 37°C (98°F), while averaging around 21°C (70°F). In contrast, July is significantly warmer, with minimum temperatures at 16°C (61°F) and a maximum reaching up to 42°C (108°F), averaging 28°C (83°F). Additionally, September experiences very little precipitation, averaging only 1 mm (0.0 in) with no rainy days, whereas July records 9 mm (0.3 in) of rain over just one day. Humidity levels are slightly higher in September at 32%, compared to July's lower 25%. For more specific insights into the weather conditions during July, you can check out Suzhou weather in July.
In comparing the weather of September and August, September tends to exhibit cooler temperatures, with a minimum of 4°C (40°F) and an average of 21°C (70°F), compared to August's minimum of 11°C (52°F) and an average of 26°C (80°F). Additionally, September has a slightly higher maximum temperature of 37°C (98°F), though it's lower than August's peak of 40°C (103°F). Precipitation is remarkably low in September, with only 1 mm (0.0 inches) and no rainy days, whereas August experienced 9 mm (0.3 inches) of rain over one day. Humidity levels are also slightly higher in September at 32%, compared to 25% in August. For a detailed look at the weather during August, you can check Suzhou weather in August.
September and October showcase a stark contrast in weather patterns. September boasts warmer temperatures, with averages reaching up to 21°C (70°F) and maximums peaking at 37°C (98°F), while October's average drops significantly to 11°C (51°F) with a minimum of -5°C (24°F). Despite both months experiencing negligible rainfall and no precipitation days, October tends to have higher humidity levels at 48%, compared to September's 32%. For more detailed information about the weather in October, you can visit Suzhou weather in October.
September and November present strikingly different weather conditions. In September, temperatures soar with a minimum of 4°C and an average of 21°C, peaking at a hot 37°C, while the humidity remains relatively low at 32% and there is virtually no precipitation. In contrast, November brings a significant drop in temperature, with a minimum of -14°C and an average of just 1°C, although it can still reach a maximum of 20°C. The humidity increases to 54%, and while there is slightly more precipitation at 2 mm, the rain remains minimal, occurring over no days. For more detailed information about November weather, you can check Suzhou weather in November.
September weather showcases a significant warmth, with average temperatures hovering around 21°C (70°F) and highs reaching up to 37°C (98°F). In contrast, December brings a stark chill, with average temperatures dropping to -6°C (21°F) and maximums barely reaching 9°C (48°F). While September enjoys dry conditions with no recorded precipitation, December also sees minimal precipitation, yet the humidity rises to 50%, adding to the icy feel of the month. For more detailed information about December's climate, check out Suzhou weather in December.
As September rolls into Suzhou, it welcomes a refreshing shift in weather that stands apart from the sweltering summer months. With average temperatures hovering around a comfortable 21°C, the oppressive heat begins to fade, making way for pleasant, mild days. Notably, the month boasts an impressively low precipitation level, ensuring that residents and visitors can enjoy clear skies without interruptions. The humidity remains fairly manageable at 32%, a welcome respite compared to the muggy summer, allowing for enjoyable outdoor activities. For those looking to explore the beautiful landscapes and rich culture, September's inviting climate makes it an ideal time for an adventure. To learn more about the weather conditions throughout the year, check out Suzhou Climate.