Last updated: August 21, 2025
In Xihu, China, September greets residents and visitors with a blend of warmth and humidity, characterized by an impressive maximum temperature of 36°C (97°F) and an average temperature hovering around 25°C (78°F). The minimum temperature dips to a cool 14°C (58°F), offering a pleasant respite during evenings. With precipitation totaling 138 mm (5.4 in) over 13 rainy days, the month experiences moderate rainfall, contributing to the region's lush landscapes. The atmospheric humidity remains high at 75%, enhancing the summer-like feel of the season. Whether exploring the scenic beauty or enjoying local attractions, September in Xihu promises a warm yet refreshing experience.
September in Xihu, China, marks a transition into a milder climate, characterized by minimum temperatures averaging around 14°C (58°F) and a comfortable average of 25°C (78°F). As summer's intense heat begins to wane, the maximum temperatures peak at 36°C (97°F), creating a pleasant environment for outdoor activities and exploration. This month beautifully bridges the warmth of August and the cooler temperatures of fall, indicating a gradual shift towards the crispness of October. The overall trend reveals a delightful balance, making September an optimal time to experience Xihu’s natural beauty without the sweltering heat typical of the preceding months.
September in Xihu, China, marks a transitional period as summer gives way to autumn, reflected in its precipitation patterns. With an average precipitation of 138 mm (5.4 in) across 13 rainy days, September experiences a noteworthy decline from the peak wetness observed in the preceding months, particularly June, which recorded a staggering 351 mm (13.8 in). This significant drop in precipitation heralds the end of the monsoon season while still ensuring the region remains lush and vibrant. The transition is further underscored by the diminishing number of rainfall days, hinting at a shift towards drier months ahead, particularly October's minimal average of 54 mm (2.1 in) over just 7 days. As September concludes, the region prepares for a crisp autumn, juxtaposed against the remnants of summer's rainfall abundance.
As the summer heat begins to wane, September in Xihu, China, sees a noticeable decline in humidity, dropping to 75%. This shift marks a significant decrease from the peak levels of 90% recorded in July and 88% in August, signaling a comfortable transition into autumn. The humidity remains relatively high compared to earlier months, such as January (70%) and February (73%), but showcases a gradual cooling trend that stabilizes in October at 76%. Overall, September serves as a bridge between the sultry summer and the drier months ahead, making it a refreshing time for residents and visitors alike.
As September arrives in Xihu, China, the UV Index remains impressively high at 10, reflecting a very high exposure category. This slight dip from the peak 11 observed during the summer months still necessitates caution, as the potential for sunburn is significant with a burn time of just 15 minutes. This trend showcases a gradual easing of intense UV conditions, yet users should continue to take protective measures. While the intensity diminishes slightly compared to August, the importance of sun safety remains paramount. For more detailed insights into UV levels throughout the year, visit Xihu UV Index.
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September in Xihu, China, provides a vibrant backdrop as the summer warmth begins to wane. Following the peak sunshine of August, which boasted a splendid 308 hours of radiant light, September still holds its own with a commendable 246 hours. This trend showcases a gradual transition as the days shorten and the crispness of autumn approaches. As daylight begins to taper off, these sunny September moments invite both locals and visitors to bask in the lingering warmth, making it a delightful time to explore the picturesque landscapes and serene waters of the region before the cooler months set in.
In September, Xihu, China experiences a notable increase in sunny weather, with a 43% likelihood of clear skies. This rise continues from the somewhat gloomy summer months, where July and August see their lowest chances of sunshine, at 14% and 29% respectively. As the season transitions into autumn, the sun starts to make more frequent appearances, reflecting a gradual upward trend toward clearer autumn days. This pattern is especially promising compared to the preceding months and provides a refreshing change that invites both locals and visitors to enjoy the outdoors under a more favorable sky.
In Xihu, China, September marks a gentle transition as daylight begins to wane, offering about 12 hours of sunlight. This decline follows a peak in June, where the days stretch to a vibrant 14 hours, providing a bright summer experience. As the year progresses from the long days of May and June, daylight gradually diminishes, with September still enjoying significantly more sunlight than the winter months, which hover around 10 hours in January and November. This rhythmic fluctuation not only defines the natural cycle of the region but also sets the stage for the cozy atmosphere of autumn as longer evenings draw in.
As September arrives in Xihu, China, the gentle caress of the wind continues to weave through the landscape, with an average speed of 2.1 m/s (5 mph). This month marks a subtle shift after the calmer breezes of summer, which lingered at just 1.8 m/s (4 mph) in both June and August. The breezy July stands out at 2.9 m/s (6 mph), offering a fleeting taste of vigor before the winds mellow again as autumn approaches. Interestingly, September's winds echo the patterns of early spring, reflecting a consistent range that maintains 2.1 m/s (5 mph) through the fall months of October and November, creating a harmonious balance that complements the peaceful charm of Xihu’s scenic beauty.
Weather in Xihu varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Xihu, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is warm and humid, with temperatures ranging from a minimum of 14°C (58°F) to a scorching maximum of 36°C (97°F), and an average temperature of 25°C (78°F). The month sees about 138 mm (5.4 in) of precipitation over 13 days, contributing to a humidity level of 75%. In contrast, January experiences much colder conditions, with temperatures plummeting to a minimum of -18°C (0°F) and averaging around 6°C (43°F), peaking at a maximum of 23°C (74°F). The precipitation in January is lower at 84 mm (3.3 in) across 10 days, and humidity drops slightly to 70%. For more details on January weather, visit Xihu weather in January.
In comparing the weather of September and February, notable differences emerge in both temperature and precipitation patterns. September boasts significantly warmer temperatures, with averages around 25°C (78°F) and a maximum reaching up to 36°C (97°F), while February experiences a chillier climate, with average temperatures at 7°C (45°F) and lows dipping to -5°C (24°F). Precipitation levels are higher in September, receiving 138 mm (5.4 in) over about 13 days, compared to February's 75 mm (3.0 in) across 10 days. Humidity remains similar in both months, at 75% for September and 73% for February, contributing to the distinct seasonal contrasts. For more insights specifically about February weather in the region, be sure to check Xihu weather in February.
September and March present contrasting weather patterns. In September, temperatures range from a minimum of 14°C to a scorching maximum of 36°C, with an average of 25°C, making it much warmer overall. Conversely, March experiences cooler temperatures, with a minimum of 2°C and a maximum of 29°C, settling at an average of 13°C. Both months receive significant rainfall, with September slightly wetter at 138 mm across 13 days compared to March's 124 mm over 14 days. Additionally, humidity levels are higher in March at 82%, compared to September's 75%. For a more detailed overview of the climate conditions during this time, check out Xihu weather in March.
September and April present contrasting weather patterns, each with distinct characteristics. In September, temperatures range from a minimum of 14°C (58°F) to a maximum of 36°C (97°F), bringing an average warmth of 25°C (78°F). This month also experiences substantial rainfall, with 138 mm (5.4 in) of precipitation spread over 13 days, coupled with a humidity level of 75%. In contrast, April enjoys cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 33°C (93°F), averaging 17°C (64°F). The month sees less rainfall, totaling 97 mm (3.8 in) over 11 days, but higher humidity at 86%. For a closer look at the April climate in Xihu, you can find more information here: Xihu weather in April.
September and May display notable differences in weather patterns. In September, temperatures range from a minimum of 14°C (58°F) to a maximum of 36°C (97°F), with an average temperature of 25°C (78°F). The month sees about 138 mm (5.4 in) of precipitation over 13 days, and humidity levels hover around 75%. Conversely, May features slightly cooler temperatures, with a minimum of 10°C (51°F) and an average of 22°C (73°F), while maximum temperatures can reach 37°C (99°F). It experiences higher precipitation, totaling 167 mm (6.6 in) over the same number of days, and higher humidity at 85%. For those interested in specific weather details, check out Xihu weather in May.
In September, the weather is characterized by slightly lower temperatures, with a minimum of 14°C and a maximum reaching 36°C, while the average remains around 25°C. In contrast, June experiences a minimum temperature of 16°C and can peak at 37°C, with a similar average of 25°C. Precipitation levels highlight a notable difference, as September receives 138 mm over 13 days, whereas June sees significantly more rainfall at 351 mm across 17 days, contributing to higher humidity, which stands at 85% in June compared to 75% in September. For more specific details, check out Xihu weather in June.
In comparing the weather of September and July, September tends to be a bit cooler with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 36°C (97°F), while July experiences significantly higher temperatures, averaging between 21°C (70°F) and 41°C (106°F). July also sees more precipitation, with 248 mm (9.8 in) over 17 days compared to September's 138 mm (5.4 in) over 13 days. Humidity levels are higher in July at 90%, contrasting with September's 75%. For a detailed look at July's weather, you can visit Xihu weather in July.
In comparing the weather of September to August, we see a notable decrease in temperatures. September's minimum temperature hovers at 14°C (58°F), while August starts at a warmer 17°C (63°F). The average temperature in September is also lower at 25°C (78°F) compared to August's more sweltering average of 30°C (86°F). Maximum temperatures peak at 36°C (97°F) in September, slightly less than August's high of 39°C (103°F).
Precipitation is somewhat lesser in September, with 138 mm (5.4 in) recorded over 13 days, as opposed to August’s 167 mm (6.6 in) over 14 days. Humidity also sees a decrease, falling from August's 88% to September's 75%. Overall, September brings a transition to slightly cooler and drier weather, making it a welcome change after the heat of August. For more detailed insights into August weather specifically, visit Xihu weather in August.
September weather typically showcases warmer temperatures, with averages around 25°C (78°F) and highs reaching up to 36°C (97°F). In contrast, October brings a noticeable drop in temperatures, with average highs of 19°C (67°F) and lows reaching 7°C (45°F). Additionally, September experiences considerably more rainfall, totaling 138 mm (5.4 in) over 13 days, while October sees a reduction in precipitation to 54 mm (2.1 in) across just 7 days. Despite a slight increase in humidity, conditions in October are more comfortable overall. For a closer look at October conditions, check out this link: Xihu weather in October.
September and November showcase stark contrasts in weather patterns. September typically features a warm climate with average temperatures around 25°C (78°F), peaking at a sweltering 36°C (97°F), while November experiences a cooler average of 14°C (57°F) with maximum temperatures reaching 31°C (87°F). Additionally, September is marked by higher precipitation levels at 138 mm (5.4 in) over 13 days, contributing to a humidity level of 75%. In contrast, November sees significantly less rain with only 57 mm (2.2 in) across 10 days and a higher humidity of 84%. For more details on November's weather, check this link: Xihu weather in November.
September and December present strikingly different weather conditions. In September, the temperatures range significantly from a minimum of 14°C (58°F) to a maximum of 36°C (97°F), with an average of 25°C (78°F). This month experiences considerable precipitation, with 138 mm (5.4 in) recorded over 13 rainy days, paired with a humidity level of 75%. In contrast, December sees much cooler temperatures, ranging from a frigid -4°C (25°F) to a mild 22°C (73°F), averaging around 8°C (46°F). Precipitation is lighter at 69 mm (2.7 in) over 9 days, while humidity remains slightly elevated at 77%. For more detailed information on December weather in Xihu, you can visit Xihu weather in December.
As September arrives in Xihu, the weather begins to shift subtly from the scorching heights of summer to a more temperate climate. With average temperatures settling at a pleasant 25°C (78°F), this month finds a balance between the maximum heat of 36°C (97°F) and cooler evenings that drop to 14°C (58°F). Rainfall lingers, with 13 days experiencing precipitation, contributing to the humidity that hovers around 75%. This blend of warmth and moisture creates a lush environment quite different from the dry, sweltering days of July and August, making September an ideal time to enjoy the region's stunning natural beauty. For more insights on Xihu's climate, visit Xihu Climate.