Last updated: August 21, 2025
In September, Zhoushan, China experiences a mild and humid climate, with an average temperature around 26°C (78°F), peaking at a maximum of 29°C (85°F) and dipping to a comfortable minimum of 21°C (70°F). Rainfall is a common feature of the month, totaling 172 mm (6.8 in) across approximately 14 days, contributing to a humidity level of around 78%. This blend of warmth and moisture creates an inviting atmosphere for visitors, while also enhancing the region's lush landscapes.
As September rolls into Zhoushan, China, the temperatures begin to reflect the warmth of late summer, showcasing a min of 21°C (70°F) and an average of 26°C (78°F), peaking at a comfortable 29°C (85°F). This month serves as a gentle transition, bridging the sizzling heat of August with the upcoming cooler months. Comparatively, September's warmth still lingers, though it marks a notable decrease from the peak temperatures of summer—an inviting atmosphere for outdoor activities before autumn sets in. With these balmy conditions, it’s the perfect time to explore the natural beauty of Zhoushan, basking in the sun while enjoying pleasant evenings filled with coastal breezes.
September marks a notable transition in Zhoushan's precipitation patterns, as the region experiences 172 mm (6.8 in) of rainfall over 14 days. This significant amount follows the peak wet month of June, which recorded an impressive 318 mm (12.5 in). As summer fades, the rainfall begins to recede, though September still holds onto a considerable volume, contributing to a lush landscape. The number of rainy days, while slightly elevated from the summer months, reflects a gradual shift towards the drier autumn season. This trend suggests that while September remains relatively wet, the anticipation of drier months looms on the horizon, setting the stage for October's moderate 150 mm (5.9 in) and further decreases in precipitation as the year progresses.
In September, Zhoushan, China, experiences a noticeable drop in humidity to 78%, marking a shift from the peak levels of the summer months. This decrease comes after a series of increasingly humid conditions, with July and August reaching their zenith at 91% and 88%, respectively. As the transition from the sweltering summer to the cooler fall begins, the humidity levels start to stabilize, hovering around the 79% mark in October. This trend suggests that while the sultry summer days fade, a comfortable yet slightly humid climate persists, making September an intriguing month for both residents and visitors alike to experience the subtropical charm of Zhoushan.
In September, Zhoushan, China, experiences a UV Index of 10, categorized as very high, which signals that while sun exposure is still dangerous, it's somewhat less intense than the extreme levels seen during the summer months. With a burn time of just 15 minutes, it's essential to take precautions when outdoors to protect your skin. This trend of decreasing UV intensity begins in September, following four consecutive months of extreme conditions, which peaked at 12 in June, July, and August. As autumn approaches, the UV Index gradually declines further, reaching 8 in October, before settling into a more moderate range in the winter. For more detailed information, you can check the Zhoushan UV Index.
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In September, Zhoushan, China, experiences a delightful combination of warmth and sunshine, with 270 hours of bright days, perfectly encapsulating the transition from summer to autumn. This month continues to showcase a strong tendency for abundant sunlight, following a peak in August, where 325 hours of summer sunshine made its mark. As the year progresses, the daylight hours gradually recede, with September still standing out as a vibrant month, comparable to the lushness of May and April. The trend clearly indicates that while the summer sun begins to fade, September remains a robust month for outdoor adventures, offering a splendid backdrop of golden hues as nature prepares for the cooler months ahead.
As September rolls into Zhoushan, China, the likelihood of sunny weather experiences a noticeable uptick, with a 48% chance of sunshine. This marks a significant improvement from the summer months, where July and June see the sun less frequently, at only 16% and 22%, respectively. While May offers a fairly low 24%, August provides a brief respite with 33% sun. September stands as a crucial turning point, where conditions begin to brighten again, bridging the gap to the favorable weather of autumn. With just a few percentages shy of the mid-year highs, it's no surprise that September emerges as an appealing time for outdoor activities in this coastal paradise.
As autumn approaches in Zhoushan, China, September experiences a gentle reduction in daylight, offering about 12 hours of sunshine each day. This month marks a transition from the long, bright summer days of June and July, which basked in 14 hours of light, gradually tapering down as the year progresses. Following the peak summer months, September's daylight duration mirrors that of April, hinting at a cyclic nature of light throughout the year. The trend showcases a gradual descent into the darker months of October and November, where daylight diminishes further to 11 and 10 hours, respectively. This subtle shift not only prepares the landscape for the serene beauty of autumn but also sets the stage for the cozy, reflective atmosphere of the coming winter.
As September rolls into Zhoushan, the average wind speed hovers at 6.1 m/s (14 mph), offering a gentle breeze that hints at the transitioning seasons. Following a peak in July at 8.0 m/s (18 mph), the winds begin to moderate, reflecting a gradual shift towards autumn. This month marks a small decline from the summer highs but remains resilient compared to the earlier months of the year, especially from June's calmer 4.5 m/s (10 mph). Trends show a distinct seasonal pattern, with spring months experiencing lower winds, while summer ushers in stronger gusts, setting the stage for the invigorating breezes of early fall. With October's average returning to 6.7 m/s (15 mph), it’s clear that Zhoushan continues to embrace the dance of wind, weaving nature’s symphony through its shores.
Weather in Zhoushan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Zhoushan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is warm and humid, with average temperatures ranging from 21°C (70°F) to a maximum of 29°C (85°F), and a substantial amount of precipitation totaling 172 mm (6.8 in) over approximately 14 days. The high humidity level of 78% adds to the overall muggy feel of the month. In contrast, January brings a significant chill, with average temperatures dropping to a minimum of -3°C (27°F) and a maximum of 16°C (62°F). The precipitation decreases to 89 mm (3.5 in) over about 10 days, and the humidity is lower at 68%, providing a crisp and drier atmosphere. For more details on January weather, check out Zhoushan weather in January.
September and February present a striking contrast in weather conditions. In September, temperatures are considerably warmer, with averages around 26°C (78°F) and maximums reaching 29°C (85°F), while February experiences much cooler temperatures, averaging only 8°C (47°F) and peaking at 15°C (59°F). Additionally, September is characterized by higher humidity at 78% and more precipitation, with 172 mm (6.8 in) spread over 14 days, compared to 93 mm (3.7 in) over 11 days in February. For a more detailed look at February’s weather patterns, you can check out Zhoushan weather in February.
September and March exhibit stark contrasts in weather conditions. In September, temperatures are much warmer, with averages around 26°C (78°F) and maximums reaching 29°C (85°F), while March temperatures are significantly cooler, averaging only 11°C (52°F) and maxing out at 17°C (62°F). Additionally, September experiences higher precipitation levels, totaling 172 mm (6.8 in) over 14 days, compared to March's 131 mm (5.2 in) spread across 15 days. Humidity remains relatively high in both months, with September at 78% and March slightly higher at 80%. For a detailed overview of March weather, you can visit Zhoushan weather in March.
September weather is typically warmer and more humid compared to April. With average temperatures reaching around 26°C (78°F) and highs of 29°C (85°F), September offers a much milder climate than April, where average temperatures only reach about 15°C (58°F). Additionally, September experiences more rainfall, totaling 172 mm (6.8 in) over approximately 14 days, while April sees less precipitation at 99 mm (3.9 in) over 10 days. The humidity also tends to be slightly higher in September at 78%, compared to 86% in April, making the latter feel a bit more damp. For more details on the weather, you can check Zhoushan weather in April.
In comparing the weather of September and May, we observe notable differences in temperature and humidity. September boasts warmer temperatures, with an average of 26°C (78°F) and highs reaching up to 29°C (85°F), while May's temperatures are cooler, averaging 19°C (67°F) and peaking at 24°C (75°F). Despite September's warmer climate, it experiences slightly less precipitation, measuring 172 mm (6.8 in) over 14 days, compared to May, which sees 199 mm (7.8 in) of rain across 12 days. Additionally, May's higher humidity of 88% contrasts with September's 78%, creating a more lush and damp atmosphere during spring. For more specific insights into May's weather patterns, you can check Zhoushan weather in May.
In comparing the weather patterns of September and June, we can observe notable differences in temperature, precipitation, and humidity levels. September generally experiences warmer temperatures, with a minimum of 21°C (70°F) and an average of 26°C (78°F), peaking at 29°C (85°F). In contrast, June has slightly cooler averages, starting at a minimum of 19°C (66°F) and averaging 23°C (73°F), with a maximum of 28°C (83°F).
Precipitation levels also vary significantly between the two months. September receives about 172 mm (6.8 in) of rainfall over approximately 14 days, while June is much wetter, with a total of 318 mm (12.5 in) spread over 16 days. This contributes to June's higher humidity, which stands at 89%, compared to September's 78%. For more detailed insights on June weather specifics, you can refer to Zhoushan weather in June.
In comparing the weather between September and July, both months present warm conditions but with some notable differences. September features a minimum temperature of 21°C (70°F) and an average of 26°C (78°F), peaking at 29°C (85°F), while July maintains slightly warmer temperatures with a minimum of 23°C (73°F) and a maximum of 30°C (85°F). Precipitation levels are quite similar, with September receiving 172 mm (6.8 in) over 14 days, whereas July has slightly higher rainfall at 175 mm (6.9 in) over 11 days. Additionally, humidity is higher in July at 91%, compared to September's 78%. For a more detailed look at July's climate, you can refer to Zhoushan weather in July.
In comparing the weather of September and August, September tends to be slightly cooler, with average temperatures dropping from 28°C (82°F) in August to 26°C (78°F). While the minimum temperature in September is lower at 21°C (70°F) compared to 23°C (73°F) in August, the maximum temperature remains comparable, reaching up to 29°C (85°F) versus 30°C (87°F). Additionally, September experiences more rainfall, totaling 172 mm (6.8 in) over 14 days, while August sees less precipitation, with 140 mm (5.5 in) over just 10 days. Humidity levels also show a decline from 88% in August to 78% in September, making September feel a bit less muggy. For a full overview of August weather, visit Zhoushan weather in August.
In September, the weather in Zhoushan is generally warmer, with average temperatures ranging from a minimum of 21°C (70°F) to a maximum of 29°C (85°F). The month experiences considerable rainfall, totaling 172 mm (6.8 in) over about 14 days, along with a humidity level of 78%.
Conversely, October sees a noticeable drop in temperatures, with averages ranging from a minimum of 16°C (60°F) to a maximum of 27°C (82°F). Although precipitation decreases to 150 mm (5.9 in) over just 10 days, humidity remains high at 79%. For more detailed information, you can check Zhoushan weather in October.
Overall, while September is warmer and wetter, October brings cooler temperatures and slightly less rainfall.
September weather is characterized by warmth and humidity, with average temperatures hovering around 26°C (78°F) and a high of up to 29°C (85°F). However, the month also experiences significant rainfall, with 172 mm (6.8 in) of precipitation falling over 14 days. In contrast, November brings a noticeable drop in temperature, with average highs of 17°C (63°F) and lows reaching 8°C (47°F). The month is drier than September, with only 82 mm (3.2 in) of rain recorded over 10 days, while humidity levels remain slightly elevated at 80%. For more detailed information on November weather patterns, visit Zhoushan weather in November.
September and December present vastly different weather conditions. In September, temperatures range from a comfortable min of 21°C (70°F) to an average of 26°C (78°F) and can peak at 29°C (85°F). This month also experiences significant rainfall, with 172 mm (6.8 in) spread over 14 days and humidity levels at 78%. In contrast, December sees much cooler temperatures, ranging from a low of -1°C (30°F) to an average of 12°C (53°F) and a maximum of 19°C (67°F). The precipitation decreases to 86 mm (3.4 in) over 11 days, and humidity slightly increases to 80%. For more detailed information, you can explore Zhoushan weather in December.
As September arrives in Zhoushan, the weather begins to transition, offering a delightful mix of warmth and mild humidity. With temperatures remaining comfortable, it's a month marked by higher precipitation compared to the drier summer months. The increased rainfall, averaging 172 mm over about half the days, refreshes the landscape and keeps the air feeling lush. This unique blend of warmth and moisture sets September apart, making it a vibrant time to explore the beauty of this coastal city. For further insights into the year's climate patterns, check out our in-depth guide on Zhoushan Climate.