Last updated: August 21, 2025
In September, the weather in Dongmen, China showcases a blend of warmth and occasional rainfall, making it a unique time of year. With maximum temperatures reaching 37°C (99°F) and an average of 26°C (80°F), the days can feel quite hot, while nights dip to a cooler 17°C (62°F). This month also experiences 72 mm (2.8 in) of precipitation across approximately 12 days, contributing to a relative humidity of 63%. Whether you're embracing the summer heat or seeking respite from the rain, September in Dongmen offers a rich tapestry of climatic experiences.
In September, Dongmen experiences a notable shift in temperatures as summer begins to wane. The minimum temperature settles at a comfortable 17°C (62°F), providing a pleasant start to the month, while the average climbs to a warm 26°C (80°F), inviting outdoor activities. The peak of the month sees temperatures soar to a steamy 37°C (99°F), reminiscent of the heights reached in the sweltering summer months. As the days gradually shorten, this transitional period showcases the last bursts of heat before autumn fully arrives, making September an inviting time to explore Dongmen's vibrant surroundings under the lingering warmth of summer.
In September, Dongmen experiences a notable shift in precipitation, receiving 72 mm (2.8 in) of rain over 12 days. This amount marks a decrease compared to the heavier summer months, with the downpour in June peaking at 249 mm (9.8 in) and a more moderate 103 mm (4.1 in) in August. The transition to early autumn is evident as the rainfall starts to taper off, signaling a move toward drier conditions that continue into October, which sees a similar amount of precipitation. This pattern suggests that while September retains a fair share of the summer's moisture, it paves the way for the drier autumn months ahead, creating a balance between the lushness of summer and the upcoming seasonal shift.
In September, humidity in Dongmen, China, drops to 63%, offering a refreshing respite after the sweltering summer months. This decline follows a peak in July, where humidity soared to an alarming 89%, and remains lower than the preceding months of May and August, which averaged around 84% and 87% respectively. As the seasons transition, the humidity levels consistently decrease into the autumn months, reaching 59% by October. This trend reflects a pattern where the summer months are characterized by high humidity, tapering off as the coolness of fall approaches, making September a breath of fresh air for residents.
In September, Dongmen experiences a UV Index of 11, categorized as extreme, with a burn time of just 10 minutes. This marks a tapering from the relentless intensity of summer months, where the UV Index peaked at 13, but caution is still paramount as the sun’s rays remain potent. Following a pattern observed from March to August, where the UV levels were consistently at their highest, September still demands careful exposure management. As the seasons transition, outdoor enthusiasts should remain vigilant and protect their skin, ensuring they are aware of the UV Index fluctuations. For more detailed insights, visit Dongmen UV Index.
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September in Dongmen, China, bathes the city in a warm glow, with 270 hours of sunshine that evoke the tail-end of summer's embrace. As the year transitions, the sunshine begins to mellow, following a peak of 318 hours in August. This month marks a slight decline in daylight compared to its predecessor, yet it still outshines the earlier months, which collectively struggle to reach the heights of late summer. Notably, sunshine hours rose steadily from 142 hours in January to a dazzling 305 in July, showcasing a vibrant upward trend throughout the warmer months. As autumn approaches, the sun in September continues to shine brightly, reminding us of the lingering warmth before the coolness of October sets in, where sunlight dips to 200 hours. It's a time to savor the golden hues of early fall amidst an impressive yearly journey of changing seasons.
In Dongmen, China, September offers a notable chance of sunny weather, with a likelihood of 49%, making it one of the brighter months of the year. This gradual increase in sun-drenched days follows a summer low point, showing a marked improvement compared to the preceding months of June and August, where sunny probabilities dwindle to just 15% and 19%, respectively. Interestingly, as autumn approaches and the year transitions, September stands out as a delightful precursor to the sun-soaked days of early fall, bridging the gap between the peak summer sunshine and the more overcast months ahead, like October with a modest 32%. Visitors can expect a refreshing atmosphere, perfect for outdoor activities or leisurely strolls under the sun’s warm embrace.
In Dongmen, China, the month of September marks a transition as the days gradually shorten, offering about 12 hours of daylight. This duration mirrors the extended daylight hours seen in the spring and summer months, peaking at 13 hours in May through July. As fall approaches, September's daylight begins to hint at the shorter days of autumn, which drop to 11 hours by October and further diminish to 10 hours in the winter months of January and November. This rhythmic ebb and flow of daylight not only shapes the natural landscape but also influences the daily lives of the residents, highlighting the stark contrasts between the vibrant summer and the contemplative fall seasons.
As summer transitions into autumn in Dongmen, China, the September wind whispers gently through the landscape, with an average speed of just 1.7 m/s (4 mph). This marks a decline from the breezy summer months, where winds consistently reached about 2.2 m/s (5 mph). The cooler air of September signifies the onset of seasonal change, as the wind begins to slow down, hinting at the impending arrival of stronger gusts in October, which averages 2.8 m/s (6 mph). Throughout the year, Dongmen's wind patterns reveal a dynamic ebb and flow, with winter months bringing steadier conditions at around 2.1 m/s (5 mph), but come September, the atmosphere embraces a serene calm, offering a moment of tranquility before the winds pick up again.
Weather in Dongmen varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Dongmen, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather. In September, temperatures range from a minimum of 17°C (62°F) to a sweltering maximum of 37°C (99°F), with an average of 26°C (80°F) and a notable humidity of 63%. Rainfall is frequent, with 72 mm (2.8 in) of precipitation spread over 12 days. In contrast, January experiences much cooler temperatures, with a minimum of -2°C (28°F) and a maximum of 23°C (73°F), averaging just 8°C (46°F). The month sees slightly less precipitation at 58 mm (2.3 in) over 11 days, along with a similar humidity level of 62%. For more specific details about the weather during this month, you can check Dongmen weather in January.
September and February present contrasting weather conditions. In September, temperatures generally range from a pleasant 17°C (62°F) at night to a sizzling 37°C (99°F) during the day, with an average of 26°C (80°F). The month sees about 72 mm (2.8 in) of rainfall over 12 days, and humidity levels sit at around 63%. In stark contrast, February experiences much colder temperatures, with a minimum of -2°C (28°F) and an average of 9°C (49°F), though it can peak at a milder 27°C (80°F). Rainfall increases to 107 mm (4.2 in) over the same number of rainy days, and humidity rises slightly to 66%. For a deeper look at February weather in Dongmen, you can check Dongmen weather in February.
September generally presents warmer weather compared to March, with average temperatures reaching 26°C (80°F) and maximums soaring up to 37°C (99°F), while March averages only 15°C (58°F) and peaks at 30°C (86°F). Additionally, September experiences considerably less precipitation at 72 mm (2.8 in) over 12 days, whereas March is much wetter, receiving 208 mm (8.2 in) of rain across 22 days. Both months have relatively high humidity, with September at 63% and March slightly higher at 73%. For a more detailed look at March weather, you can visit Dongmen weather in March.
When comparing the weather in September and April, notable differences emerge. September is generally warmer, with average temperatures of 26°C (80°F), reaching highs of 37°C (99°F), while April sees much cooler averages at 18°C (65°F) and maximums of 31°C (89°F). Additionally, September experiences less precipitation, with 72 mm (2.8 in) over 12 days, compared to April's 171 mm (6.7 in) across 18 days. Humidity levels are relatively similar, with September at 63% and April at 70%, but April's higher precipitation and lower temperatures contribute to a more variable climate. For more details, you can refer to Dongmen weather in April.
September and May present distinct weather patterns characterized by their temperature ranges and precipitation levels. In September, the weather is generally warmer, with temperatures averaging around 26°C (80°F), peaking at 37°C (99°F), while May is cooler, averaging 23°C (74°F) with a maximum of 34°C (94°F). However, May experiences significantly higher rainfall, totaling 182 mm (7.2 in) over 20 days compared to September's 72 mm (2.8 in) across 12 days. Additionally, May tends to be more humid, with humidity levels reaching 84%, compared to September's 63%. For more details on May weather, you can visit Dongmen weather in May.
When comparing the weather in September and June, both months exhibit warm average temperatures, with September having a slightly higher maximum temperature of 37°C (99°F) compared to June's 34°C (93°F). However, June is characterized by significantly higher precipitation, totaling 249 mm (9.8 in) over 20 days, while September sees only 72 mm (2.8 in) across 12 days. Additionally, June has a higher humidity level of 83%, making it feel more oppressive than September, which has a humidity of 63%. For a more detailed look at June weather, visit Dongmen weather in June.
When comparing the weather in September and July, it’s clear that both months experience high temperatures, with July boasting an average of 28°C (83°F) compared to September's slightly cooler average of 26°C (80°F). However, July is generally more humid, with a humidity level of 89%, whereas September sees a lower humidity of 63%. Additionally, July receives significantly more precipitation, totaling 176 mm (6.9 in) over 16 days, compared to September's 72 mm (2.8 in) over just 12 days. Overall, while both months can be warm, July tends to be more humid and wetter. For more detailed insights, you can check Dongmen weather in July.
In comparing the weather between August and September, it is evident that September experiences slightly cooler temperatures with minimums ranging from 17°C (62°F) to a maximum of 37°C (99°F), while August has a warmer range with minimums at 22°C (71°F) and maximums reaching 38°C (100°F). The average temperature in September is 26°C (80°F), compared to August's average of 28°C (83°F). Additionally, September sees reduced precipitation at 72 mm (2.8 in) over 12 days, whereas August had more rain at 103 mm (4.1 in) across 17 days. Humidity levels are also lower in September at 63%, compared to the higher 87% humidity experienced in August. For more details on August weather specifically in Dongmen, you can visit Dongmen weather in August.
In September, the weather tends to be warmer, with minimum temperatures around 17°C (62°F) and average highs reaching up to 37°C (99°F). The month experiences considerable humidity at 63%, accompanied by about 72 mm (2.8 in) of rainfall over 12 days. In contrast, October sees a noticeable drop in temperatures, with minimums dropping to 11°C (51°F) and an average high of 36°C (96°F). The precipitation remains similar at 70 mm (2.8 in), but the rainy days decrease to 11, and humidity slightly lessens to 59%. For more tailored weather details, you can check Dongmen weather in October.
In September, temperatures are quite warm, ranging from a minimum of 17°C (62°F) to a maximum of 37°C (99°F), with an average of 26°C (80°F). The month experiences moderate precipitation of 72 mm (2.8 in) over 12 days, coupled with a humidity level of 63%. In contrast, November sees a significant drop in temperatures, with a minimum of 5°C (42°F) and a maximum of 29°C (85°F), resulting in a cooler average of 15°C (59°F). Additionally, November has a slightly higher precipitation of 95 mm (3.7 in) over the same number of days, and the humidity increases slightly to 66%. For a more detailed look at what to expect, check out Dongmen weather in November.
September weather is characterized by warm temperatures, with a minimum of 17°C (62°F) and a maximum reaching up to 37°C (99°F), making it feel quite hot, especially with an average of 26°C (80°F). The month experiences 72 mm (2.8 in) of precipitation over about 12 days, with humidity levels around 63%. In contrast, December brings a dramatic shift; temperatures drop significantly, with a minimum of -3°C (27°F) and an average of 9°C (48°F), peaking at a maximum of 24°C (76°F). Though December sees slightly less precipitation at 56 mm (2.2 in) over the same number of days, humidity rises to 69%. This stark contrast highlights the transition from the warmth of late summer to the chill of winter. For those interested, more specifics on December weather can be found here: Dongmen weather in December.
In September, Dongmen experiences a notable transition as it bids farewell to the intense summer heat. With average temperatures settling around a comfortable 26°C (80°F), the weather feels markedly milder compared to the sweltering highs of the preceding months. While the maximum temperature can still reach a sizzling 37°C (99°F), the occasional rain, contributing to a total of 72 mm (2.8 in) over 12 days, brings refreshing relief. The humidity levels remain fairly moderate at 63%, highlighting the month’s unique blend of warmth and moisture. This makes September an ideal time to enjoy the outdoors, setting it apart from the hotter, drier months. For a deeper dive into the region’s climate nuances, visit Dongmen Climate.