Last updated: August 21, 2025
September in Hefei, China, typically showcases a dynamic climate characterized by warm temperatures and varied precipitation. Residents can expect a maximum temperature reaching 36°C (97°F), while the average sits at a comfortable 25°C (77°F), dipping to a minimum of 16°C (61°F) during cooler nights. The month presents 78 mm (3.1 in) of rainfall over approximately 9 days, contributing to the prevalent humidity of 68%. This combination of heat and moisture creates a unique atmosphere, ideal for enjoying the vibrant early autumn scenery.
In September, Hefei experiences a delightful transition from the intense heat of summer to the cooler embrace of autumn. With minimum temperatures averaging around 16°C (61°F) and a comfortable average of 25°C (77°F), it offers a pleasant reprieve from the sweltering months prior. The peak temperatures can soar to 36°C (97°F), showcasing the last bursts of summer warmth. As the month progresses, you'll notice a gradual decline in heat, signaling the onset of more temperate days ahead. This month serves as a beautiful bridge, inviting locals and visitors alike to enjoy outdoor activities amid changing foliage and refreshing breezes.
In September, Hefei experiences a noticeable transition in its weather as the summer heat begins to wane. The city receives 78 mm (3.1 in) of precipitation over 9 days, a significant dip compared to the heavy showers of July and August. This reduction marks the end of the peak rainfall period, leading to a potentially drier and more comfortable climate as autumn approaches. The precipitation trend showcases a gradual decline from the torrential downpours of the preceding months, highlighting September's role as a bridge between sweltering summer and the cooler autumn weather. As such, it's an ideal time for residents to enjoy the refreshing changes while preparing for the upcoming season.
As summer transitions into autumn, September in Hefei, China experiences a notable drop in humidity, averaging 68%. This marks a refreshing change from the peak of the wet season, where humidity levels soared to a high of 89% in July. While the humidity remains relatively high compared to the winter months, September's figures indicate a gradual decline, setting the stage for a drier atmosphere ahead. Following this trend, October's humidity is expected to rise slightly to 71%, suggesting a return to the more moderate levels typical of autumn. The month's cooler temperatures coupled with reduced moisture create a pleasant environment, making September a uniquely comfortable time in Hefei.
As September arrives in Hefei, the UV Index remains notably high at 10, classifying it within the very high exposure category. This level of UV radiation requires vigilant sun protection, with a burn time of just 15 minutes for unprotected skin. Following the extreme conditions of the summer months, which peaked at an ultra-intense UI Index of 11, September mirrors the intense sunlight experienced in previous months, yet offers a slight reprieve as we transition into autumn. As daylight hours shorten and temperatures begin to cool, it's crucial to maintain sun safety practices. For more details, visit the Hefei UV Index.
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September in Hefei, China, showcases a delightful transition to autumn with 253 hours of sunshine, marking a slight dip from the sun-drenched heights of July and August. As the summer heat begins to wane, this month maintains a robust presence of sunlight, contributing to a vibrant atmosphere perfect for outdoor activities and exploration. The gradual decline in sunshine hours as the year progresses is evident, with September holding its own before the cooler October emerges with 230 hours. This trend highlights a seasonal shift, where the lingering warmth of summer gracefully fades, allowing the golden hues of autumn to take center stage in Hefei.
As September approaches in Hefei, China, the likelihood of sunny weather becomes notably promising, with a 50% chance of sunshine. This marks a significant uptick from the summer months, where the sunniest days are scarce, with July and August seeing only 22% and 33%, respectively. The resurgence of clear skies continues into the autumn months, with October maintaining a 41% chance. Interestingly, the trend reveals that while winter months, particularly November and December, eventually bring about 63% and 68% chances of sunshine, September stands out as a transition period where residents can enjoy a refreshing balance of warmth and brightness before the cooler weather settles in.
As September rolls into Hefei, China, the daylight duration begins its gentle decline, showcasing a transitional period after the lush summer months. With about 12 hours of daylight, September marks a gradual shift from the 14 hours enjoyed in June, reminding residents of the approaching autumn. This month serves as a pleasant bridge, holding onto the warmth of summer while ushering in the cooler days ahead. The trend of decreasing daylight continues into October, where it dips to 11 hours, indicating a slow yet steady retreat of daylight as the year heads towards winter. This rhythm of varying daylight not only influences daily activities but also enhances the appreciation for nature’s changing colors and moods during this time of year.
As September arrives in Hefei, China, a gentle breeze with an average wind speed of 2.8 m/s (6 mph) ushers in the early whispers of autumn. This month mirrors the softer winds of April and May, creating a serene atmosphere as summer winds down. Notably, September's wind speed shows a slight increase compared to the calm of August, inviting residents and visitors alike to enjoy the outdoors. Throughout the year, Hefei's winds tend to fluctuate, with July boasting the strongest gusts at 3.5 m/s (8 mph), but September's mild breeze serves as a refreshing transition, setting the stage for the cooler days ahead.
Weather in Hefei varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Hefei, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather of September and January, a stark contrast emerges. September boasts a warm climate with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 36°C (97°F), averaging around 25°C (77°F). It experiences 78 mm (3.1 in) of precipitation over 9 days, with humidity levels at 68%. In contrast, January is marked by cold temperatures, with a minimum of -14°C (8°F) and an average of just 4°C (39°F), peaking at 18°C (65°F). This winter month sees less precipitation at 51 mm (2.0 in) over 6 days, and has a slightly higher humidity of 69%. For those interested in the specifics of January weather, Hefei weather in January provides detailed insights.
In September, temperatures range from a mild 16°C (61°F) at night to a scorching 36°C (97°F) during the day, with an average temperature of 25°C (77°F). The month generally sees around 78 mm (3.1 in) of precipitation spread over 9 days, accompanied by humidity levels of 68%. In contrast, February presents a starkly different climate, with nighttime lows plummeting to -12°C (10°F) and day temperatures averaging only 6°C (43°F), peaking at 27°C (81°F). Although February experiences less precipitation at 52 mm (2.0 in), the humidity remains relatively high at 72%, and precipitation also occurs over 9 days. For a more detailed overview of February weather, visit Hefei weather in February.
In September, the weather tends to be significantly warmer, with average temperatures around 25°C (77°F) and maximums reaching up to 36°C (97°F). This month experiences higher humidity at 68% and sees about 78 mm (3.1 in) of precipitation over 9 days. In contrast, March showcases cooler temperatures, with an average of 12°C (55°F) and daytime highs of 29°C (84°F), while nighttime lows can drop to 1°C (34°F). Although there is slightly less precipitation in March at 68 mm (2.7 in), it is spread over more days, totaling around 11 days of rainfall, and the humidity levels are notably higher at 82%. For more detailed insights, check out Hefei weather in March.
September and April offer contrasting weather experiences. September showcases warmer temperatures, boasting a minimum of 16°C (61°F) and an average high of 25°C (77°F), with maximums reaching up to 36°C (97°F). It features a moderate humidity level of 68% and 78 mm of precipitation spread over 9 days. In contrast, April starts cooler, with a minimum temperature of 5°C (41°F) and a more modest average high of 17°C (63°F), peaking at 32°C (90°F). Despite lower overall precipitation at 66 mm, April experiences a higher humidity of 85%. For those interested in more details, you can check Hefei weather in April.
When comparing the weather in September and May, notable differences emerge in both temperature and humidity. September features a minimum temperature of 16°C (61°F) and an average of 25°C (77°F), while May starts off cooler with a minimum of 11°C (52°F) and an average of 23°C (73°F). Interestingly, May boasts a maximum temperature that can reach 37°C (98°F), similar to September's peak of 36°C (97°F). However, May experiences higher precipitation, with 108 mm (4.3 in) over 9 days compared to September's 78 mm (3.1 in), and it also has increased humidity at 84% versus September’s 68%. For more detailed insights, you can check the Hefei weather in May.
In comparing the weather of September and June, we find that both months experience similar high temperatures, with maximums reaching up to 36°C (97°F). However, September tends to be slightly warmer on average, with temperatures ranging from a minimum of 16°C (61°F) to an average of 25°C (77°F), compared to June's range of 17°C (62°F) to 26°C (79°F).
One notable difference is humidity: September has a lower average humidity of 68%, while June is more humid at 84%. Additionally, precipitation is significantly higher in June, with 154 mm (6.1 in) over 10 days, compared to September's 78 mm (3.1 in) over 9 days. Overall, June tends to be wetter and more humid, while September offers slightly warmer and drier conditions. For more details, you can check Hefei weather in June.
In comparing the weather between September and July, September tends to be slightly cooler, with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 36°C (97°F), while July is warmer, with an average ranging from 20°C (69°F) to a maximum of 39°C (103°F). Additionally, September experiences significantly less precipitation, with 78 mm (3.1 in) over just 9 days, compared to July's wetter climate, which sees 231 mm (9.1 in) over 15 days. Moreover, humidity levels are higher in July at 89%, compared to September's more comfortable 68%. For a detailed look at July's weather patterns, check out Hefei weather in July.
In comparing the weather of September to August, September experiences slightly cooler temperatures, with a minimum of 16°C (61°F) and a maximum of 36°C (97°F), while August sees higher temperatures, ranging from a minimum of 21°C (70°F) to a maximum of 38°C (101°F). The average temperature in September is also lower at 25°C (77°F) compared to August's 29°C (84°F). Additionally, September has less precipitation, totaling 78 mm (3.1 in) over 9 days, in contrast to August's 170 mm (6.7 in) over 11 days. Humidity levels are higher in August at 84%, compared to September's 68%. For more details, check Hefei weather in August.
September typically brings warmer temperatures compared to October, with an average high of 25°C (77°F) and a maximum reaching up to 36°C (97°F). In contrast, October sees a drop in average temperatures to 18°C (65°F), with minimums sometimes dipping as low as 6°C (44°F). While September experiences more rainfall—78 mm (3.1 in) over 9 days—October is slightly drier, with 58 mm (2.3 in) of rain falling over just 6 days. Both months exhibit relatively high humidity, with October slightly higher at 71% compared to September's 68%. For a deeper insight into October's weather, check out Hefei weather in October.
September typically experiences warmer weather compared to November, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 36°C (97°F) and an average of 25°C (77°F). In contrast, November sees cooler temperatures, where the minimum drops to 0°C (32°F) and the average is only 13°C (55°F), peaking at 27°C (81°F). Additionally, September has higher precipitation levels at 78 mm (3.1 in) over 9 days, while November brings about milder rainfall, totaling 35 mm (1.4 in) across 6 days. Interestingly, November’s humidity is slightly higher at 83%, compared to September's 68%. For a more detailed look at what to expect, you can check out Hefei weather in November.
September and December present stark contrasts in weather. In September, temperatures range from a minimum of 16°C (61°F) to a maximum of 36°C (97°F), with an average of 25°C (77°F). The month experiences significant precipitation, totaling 78 mm (3.1 inches) over 9 days, coupled with a humidity level of 68%. In contrast, December brings much colder temperatures, with a minimum of -6°C (22°F), an average of 6°C (43°F), and a maximum of 19°C (66°F). Precipitation decreases to 31 mm (1.2 inches) over just 6 days, and humidity slightly increases to 76%. For more details about December weather in Hefei, visit Hefei weather in December.
As September rolls in, Hefei experiences a noticeable shift in weather, transitioning from the sweltering heat of summer to a more temperate climate. While the maximum temperatures can still reach the upper 30s °C, the average settles comfortably at 25°C, making it a delightful time to explore the city. However, this month also brings increased precipitation and humidity, with nine days of rainfall contributing to the lushness of the environment. This combination of warm days and cooler evenings, along with a touch of dampness, sets September apart from the preceding summer months. To learn more about the city's year-round climate, visit Hefei Climate.