Last updated: August 21, 2025
In September, Tuen Mun, Hong Kong, experiences a warm and humid climate, with average temperatures reaching around 28°C (83°F). The maximum temperature can soar to 34°C (94°F), while the night brings a more comfortable minimum of 23°C (74°F). This month also sees considerable rainfall, accumulating to 219 mm (8.6 in) over approximately 22 days, resulting in a humidity level of 75%. These conditions create a vibrant atmosphere, often characterized by lush greenery and dynamic weather patterns, making September a unique time to explore this coastal region.
As summer gracefully transitions into autumn, September in Tuen Mun, Hong Kong, showcases milder yet still warm temperatures. The daily minimum hovers around 23°C (74°F), while the average settles at a comfortable 28°C (83°F). With a peak reaching 34°C (94°F), September retains some of the heat from the preceding months, but the slight drop from the sweltering August temperatures indicates a welcoming shift. This month marks a unique balance, offering warm days ideal for outdoor explorations, yet hinting at the coolness that will soon sweep in with October, making it a delightful time to enjoy Tuen Mun's vibrant scenery.
September in Tuen Mun, Hong Kong, continues the region's wet spell, recording an impressive 219 mm (8.6 in) of precipitation over 22 days. This month sees a substantial drop from the rain-soaked heights of August, which boasted a staggering 374 mm (14.7 in), yet September’s figures still signify a robust ongoing monsoon. Notably, the frequency of rainy days remains elevated, with almost three-quarters of the month experiencing rainfall. As summer transitions into autumn, it’s clear that September's weather contributes significantly to the region's annual totals, showcasing a blend of lingering summer storms and the onset of cooler, wetter conditions.
In September, Tuen Mun, Hong Kong, experiences a humidity level of 75%, marking a notable decrease from the peak humidity of 88% seen in both July and August. This decline indicates a subtle shift as the summer heat wanes, leading to more comfortable conditions as the region transitions into autumn. Throughout the year, humidity begins relatively lower in the cooler months, with 64% in January and November, gradually rising to a summer high. The fluctuation in humidity reflects the seasonal changes, with September serving as a bridge between the oppressively humid summer and the drier months ahead. As October approaches, the humidity is expected to further decrease to 65%, signaling a refreshing change in the climate.
As September rolls into Tuen Mun, Hong Kong, the UV Index remains notably high, standing at 12, which indicates an extreme exposure category. This trend closely follows the scorching summer months, where the UV Index peaked at 14 in May and consistently stayed at 13 during July and August. As autumn approaches, the burn time continues to be short, at just 10 minutes, reinforcing the need for sun protection as harmful rays hold strong before the cooler months set in. With the UV levels gradually declining in October, this is a critical time to stay vigilant outdoors. For detailed insights on UV exposure, visit Tuen Mun UV Index.
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September in Tuen Mun, Hong Kong, basks in a generous 289 hours of sunshine, contributing to an enchanting transition from summer to autumn. This month marks a slight dip from the sun-drenched heights of July, which boasts an impressive 321 hours, yet still offers plenty of bright days for outdoor adventures. Following the vibrant energy of May and the steady warmth of August, September retains a delightful balance, making it an ideal time for both locals and visitors to enjoy the picturesque surroundings. As the days gradually shorten towards the end of the year, September remains a beacon of sunshine before the more subdued months of October and November, which hover above 260 hours. This trend underscores Tuen Mun's reputation as a sun-kissed enclave, where each day invites you to step outside and savor the stunning vistas.
As September rolls in, Tuen Mun, Hong Kong experiences a noticeable uptick in sunny days, with a 41% chance of sunshine. While this is a significant improvement compared to the gloomy summer months of June and August, it still lags behind the brighter months of January and November. The transition towards autumn shows that, while the likelihood of sun doesn't reach its peak, the days are gradually becoming more favorable for outdoor activities. As the year progresses, September stands out as a month where sunshine returns to the region, hinting at a refreshing shift from the heat of the preceding summer.
In September, Tuen Mun, Hong Kong enjoys approximately 12 hours of daylight, a continuation of the more extended summer days experienced in July and August. As the month unfolds, the gradual transition toward autumn becomes evident, with daylight durations slowly tapering off from the summer peak of 13 hours. This subtle shift sets the stage for the subsequent months, where daylight decreases further to 11 hours in October and November, mirroring the decline seen from the longer days of spring. Overall, September serves as a bridge between the sun-kissed summer and the shorter, cooler days to come, offering a balanced mix of daylight that invites outdoor activities before the onset of autumn's embrace.
As summer fades into fall, September in Tuen Mun, Hong Kong, brings a noticeable shift in the breeze. The average wind speed drops to a gentle 2.1 m/s (5 mph), marking the calmest month of the year. This decline follows the warmer months of July and August, which are characterized by even lighter winds. In contrast, the season transitions into October, where wind speeds pick up again to 4.3 m/s (10 mph), invigorating the atmosphere. Overall, September offers a serene reprieve, as the softer breezes invite residents to savor the slower pace before the winds of autumn gather strength.
Weather in Tuen Mun varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Tuen Mun, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by warm temperatures, with a minimum of 23°C (74°F) and an average of 28°C (83°F), peaking at 34°C (94°F). This month also sees significant rainfall, totaling 219 mm (8.6 in) over approximately 22 days, paired with high humidity levels of 75%. In contrast, January presents a much cooler climate, with temperatures ranging from a minimum of 6°C (42°F) to an average of 17°C (62°F), and a maximum of 25°C (78°F). Precipitation is minimal during this month, amounting to just 22 mm (0.9 in) over 3 days, and humidity levels decrease to 64%. For more detailed information, visit Tuen Mun weather in January.
September and February exhibit markedly different weather patterns. In September, temperatures range from a warm minimum of 23°C (74°F) to a scorching maximum of 34°C (94°F), with an average of 28°C (83°F). This month is characterized by high humidity at 75% and significant rainfall, with around 219 mm (8.6 in) of precipitation spread over 22 days. In contrast, February experiences much cooler temperatures, with a minimum of 6°C (42°F) and a maximum of 27°C (81°F), averaging around 17°C (63°F). Additionally, February has far less rainfall, totaling only 48 mm (1.9 in) over 7 days and a lower humidity level of 68%. For more detailed insights, you can check Tuen Mun weather in February.
When comparing the weather in September and March, notable differences emerge. September experiences warmer temperatures, with a minimum of 23°C (74°F) and an average high of 34°C (94°F), while March sees cooler temperatures, dropping to a minimum of 10°C (51°F) and averaging around 21°C (70°F). Additionally, September is characterized by significantly higher precipitation, totaling 219 mm (8.6 in) over 22 days, compared to March's 68 mm (2.7 in) over just 13 days. Humidity levels remain relatively similar, at 75% in September and 73% in March. For a more detailed look at March weather, visit Tuen Mun weather in March.
In comparing the weather between September and April, it is clear that September boasts significantly warmer temperatures, with average highs reaching 34°C (94°F) compared to April's maximum of 32°C (91°F). September also experiences greater humidity, averaging 75%, while April remains slightly lower at 71%. Precipitation is more frequent in September, with 219 mm (8.6 in) spread over 22 days, as opposed to April's 100 mm (3.9 in) over just 12 days. For a detailed look at what to expect in April, check the Tuen Mun weather in April.
In comparing the weather of September and May, September showcases warmer temperatures with a minimum of 23°C (74°F) and an average of 28°C (83°F), peaking at 34°C (94°F), whereas May has a cooler minimum of 16°C (61°F) and a similar average of 27°C (80°F), reaching a maximum of 35°C (95°F). Both months experience significant rainfall, with September receiving 219 mm (8.6 in) over 22 days and May recording slightly less at 193 mm (7.6 in) over 20 days. Additionally, September tends to be more humid at 75%, while May has a slightly higher humidity level at 79%. For more detailed information, check out Tuen Mun weather in May.
When comparing the weather in September and June, both months feature similar average temperatures, hovering around 28°C (83°F). However, June tends to be slightly warmer, with maximum temperatures reaching up to 35°C (95°F) compared to September's peak of 34°C (94°F). Precipitation is notably higher in June, totaling 351 mm (13.8 in) over 26 days, as opposed to September’s 219 mm (8.6 in) across 22 days. Additionally, both months experience high humidity levels, with June at 77% and September at 75%. For a detailed look at June's weather patterns, you can check this link: Tuen Mun weather in June.
When comparing the weather in September and July, both months feature high temperatures, but September tends to be slightly cooler overall. In September, the minimum temperature is 23°C (74°F), with an average of 28°C (83°F) and a maximum of 34°C (94°F), while July has minimum temperatures around 25°C (77°F), an average of 29°C (85°F), and peaks at 35°C (95°F). Both months see significant rainfall, but September experiences slightly more, with 219 mm (8.6 in) over 22 days compared to July's 206 mm (8.1 in) across 25 days. Additionally, July has higher humidity levels at 88%, as opposed to September's 75%. For more insights into the weather specifics of July, you can explore Tuen Mun weather in July.
In comparing the weather of September to August, September shows a slight decrease in average temperatures, with a minimum of 23°C (74°F) and an average of 28°C (83°F), compared to August's minimum of 25°C (78°F) and average of 29°C (84°F). Additionally, September experiences lower maximum temperatures, peaking at 34°C (94°F), while August can reach up to 36°C (97°F). Precipitation is also significantly less in September, with 219 mm (8.6 in) falling over 22 days, whereas August sees a much higher total of 374 mm (14.7 in) over 26 days. Humidity levels in September stand at 75%, a decline from August's higher humidity of 88%. For more detailed information, you can refer to Tuen Mun weather in August.
In September, the weather is characterized by higher temperatures, with minimums around 23°C (74°F), averaging 28°C (83°F), and reaching maximums of 34°C (94°F). This month also experiences significant rainfall, totaling 219 mm (8.6 in) over 22 days, coupled with a high humidity level of 75%. In contrast, October brings a notable drop in temperatures, with minimums at 15°C (60°F) and an average of 25°C (78°F), while still peaking at 34°C (93°F). Precipitation decreases to 151 mm (5.9 in) over just 10 days, and humidity falls to 65%. For more detailed information, you can visit Tuen Mun weather in October.
September and November exhibit a marked contrast in weather conditions. September remains quite warm, with average temperatures hovering around 28°C (83°F) and maximum highs reaching up to 34°C (94°F). The month experiences significant rainfall, averaging 219 mm (8.6 in) over 22 days, accompanied by high humidity levels of 75%. In stark contrast, November offers cooler temperatures, showcasing a minimum of 14°C (58°F) and an average of 22°C (72°F), with a maximum of 30°C (86°F). Rainfall is considerably lighter, totaling only 28 mm (1.1 in) over just 4 days, and the humidity drops to a more comfortable 64%. For more details about the weather in November, check out Tuen Mun weather in November.
When comparing the weather in September and December, significant contrasts emerge. September boasts warmer temperatures, with a minimum of 23°C (74°F) and an average of 28°C (83°F), reaching highs of up to 34°C (94°F). This month also experiences high humidity levels at 75% and considerable rainfall, accumulating 219 mm (8.6 in) over 22 rainy days. In stark contrast, December sees a cooler climate with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 28°C (82°F), and a much lower average temperature of 18°C (64°F). Precipitation is minimal in December, with just 22 mm (0.8 in) falling over only 3 days, and humidity drops to 69%. For more detailed information about December weather in Tuen Mun, check Tuen Mun weather in December.
As September unfolds in Tuen Mun, it marks a noticeable transition from the sweltering summer months, with temperatures averaging a warm 28°C and occasionally peaking at a sizzling 34°C. This warmth, coupled with heightened humidity levels around 75%, creates a tropical atmosphere that can feel intense. However, September also brings a significant increase in rainfall, with 219 mm of precipitation over about 22 days, making it one of the wetter months of the year. As the month progresses, residents often experience the refreshing relief that rain provides amid the lingering heat, setting the stage for the cooler, drier autumn. For more details on the climate in this region, visit Tuen Mun Climate.