September Weather in Tianmen, China

Last updated: August 21, 2025

In September, Tianmen, China experiences a delightful transition into early autumn, with maximum temperatures reaching an inviting 36°C (98°F) and an average of 25°C (77°F). The minimum temperature dips to a comfortable 15°C (59°F), perfect for enjoying the region's natural beauty. However, visitors should anticipate some rainfall, as the month sees approximately 88 mm (3.5 in) of precipitation over about 10 days, leading to a humidity level of 68%. This blend of warmth and moisture creates a vibrant atmosphere, making September an engaging time to explore Tianmen's captivating landscapes.

September Temperature in Tianmen

In September, Tianmen experiences a delightful transition from the heat of summer to the cool of autumn. With minimum temperatures around 15°C (59°F) and pleasant averages reaching 25°C (77°F), the weather remains comfortably warm, making it an ideal time for outdoor activities. The peak temperature can soar up to 36°C (98°F), reminiscent of the sweltering summer months, yet the overall climate indicates a gentle cooling trend as the month progresses. This shift is part of a larger seasonal pattern where the hot July and August temperatures gradually subside, allowing for more enjoyable, moderate days perfect for exploring the stunning landscapes of the region.

September Weather in Tianmen: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Tianmen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tianmen, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec404555637279838477645644
Data source: Temperature data for Tianmen generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Tianmen

In September, Tianmen experiences a transition in its weather patterns, with precipitation amounting to 88 mm (3.5 in) over 10 days. This marks a significant decline compared to the preceding months, most notably the summer's peak in June and July, where rainfall reached 222 mm and 216 mm respectively. As the rainy season begins to recede, the intensity and frequency of rainstorms diminish, providing a brief reprieve before the onset of autumn's drier conditions. While September's rainfall is notable, it signals a shift toward more moderate weather, paving the way for the crisp and cooler days of October with its average of 59 mm (2.3 in).

September Precipitation Trends in Tianmen

The chart displays monthly precipitation patterns in Tianmen, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Tianmen, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec504610113318222221611988594122
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tianmen

In September, humidity in Tianmen, China experiences a noticeable dip, dropping to 68% after a humid summer marked by peaks in July at 87% and August at 83%. This decline reflects a transition into autumn, allowing residents to enjoy a respite from the sticky air that often characterizes the previous months. The trend indicates that while winter months hover around 71% to 79%, September serves as a refreshing bridge, providing a brief yet comfortable pause before the humidity levels rise again in the following autumn months, which return to the low 70s.

September Average Humidity in Tianmen

This chart illustrates the average monthly humidity levels in Tianmen, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Tianmen is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec71%75%84%85%83%83%87%83%68%72%83%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Tianmen

As summer transitions to autumn in Tianmen, China, September continues to exhibit a very high UV Index of 10, indicating a persisting intensity of sun exposure similar to the summer months. With a burn time of just 15 minutes, it’s crucial for residents and visitors alike to remain vigilant about sun protection. After peaking in July with an extreme UV Index of 12, the slight decline in index levels does not warrant complacency, as September still promotes a heightened risk of skin damage. This consistent trend in UV intensity from June through September highlights the importance of safeguarding oneself against harmful rays. To learn more about daily UV levels, check out the details at Tianmen UV Index.

Maximum UV Index Levels in Tianmen for September

The chart shows the monthly maximum UV Index (UVI) for Tianmen in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Tianmen typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec56891010121110864
Data source: Tianmen September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Tianmen

In Tianmen, China, September offers a delightful tapestry of sunshine, totaling 253 hours basked in warm golden light. This month marks a transition, as the summer's peak in July and August—with their impressive 296 and 310 hours—starts to wane, leading into the cooler months where sunlight declines again. Notably, September shines brighter than the preceding October's 217 hours, showcasing a lingering warmth before autumn fully sets in. The consistent rise in sunlight from January’s sparse 178 hours to the summer's vibrant highs illustrates the area's embrace of summer's long days, while the dip afterwards signals a gradual shift. This rhythm of sunlight not only highlights the changing seasons but also invites locals and visitors alike to revel in the beauty each month brings.

Monthly Sunshine Duration in Tianmen: September Highlighted

The September sunshine duration represents the total number of hours Tianmen experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec178h217h239h239h269h277h296h310h253h217h219h226h
Data source: Tianmen September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Tianmen During September

In Tianmen, China, the month of September stands out with a notable 63% chance of sunny weather, making it one of the sunniest periods of the year. This significant shift from the preceding summer months, where the likelihood of sunshine hovers around 30%, suggests that early autumn brings a welcomed respite from the earlier humidity and cloud cover. Following the decrease in sunny days from April through August, September not only marks a return to brighter skies but also sets the stage for the pleasantly warm and inviting days typical of the early fall season. Overall, this trend underscores September as an ideal time for outdoor activities and enjoying the natural beauty of the region.

Percentage of Sunny Days in September in Tianmen

The chart illustrates the percentage of sunny days in Tianmen throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Tianmen experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec50%42%26%15%21%28%32%30%63%39%55%61%
Data source: Tianmen September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Tianmen in September

As the summer warmth begins to wane in Tianmen, September heralds a transition, with daylight lasting approximately 12 hours. This marks a gradual decline from the sun-drenched 14 hours of June, as the region shifts towards the cooler months. Interestingly, the daylight duration remains robust compared to the earlier months of the year, reflecting a balance between the lingering warmth of late summer and the approaching autumn chill. Following September, daylight continues to decrease steadily, hinting at the cozy, shorter days of fall and winter ahead. This rhythmic cycle of light not only shapes the landscape but also influences daily activities and cultural practices in this vibrant city.

Average Daylight Hours in Tianmen for September

The chart illustrates the variation in daylight duration in Tianmen throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 22m11h 4m11h 59m12h 55m13h 42m14h 5m13h 54m13h 13m12h 19m11h 23m10h 35m10h 10m
Data source: Tianmen daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Tianmen

In September, the winds in Tianmen breathe a gentle cadence, with an average speed of 2.6 m/s (6 mph). This aligns with the mild breezes of early summer, making the transition into autumn feel both refreshing and inviting. As the year unfolds, Tianmen experiences a gradual evolution in wind dynamics; from the calm breezes of June at 2.1 m/s (5 mph), there is a subtle resurgence in wind speed through July and August before stabilizing in September. Notably, the upcoming month of October prepares to bring a noticeable increase, where the average wind speed will rise to 3.4 m/s (8 mph). This pattern illustrates not only the modulation of wind throughout the seasons but also the anticipation of more invigorating gusts as autumn fully embraces the region.

Average September Wind Speed in Tianmen

The chart displays monthly wind speed patterns in Tianmen, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.62.82.82.52.12.62.42.6 m/s3.42.62.5
Data source: Tianmen September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Tianmen Compares to Other Months

Weather in Tianmen varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Tianmen, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January present strikingly different weather patterns. In September, temperatures are considerably warmer, with a minimum of 15°C (59°F) and an average high of 36°C (98°F), while January experiences a chilling minimum of -10°C (14°F) and an average high of only 19°C (66°F). September also sees higher rainfall, totaling 88 mm (3.5 in) over about 10 days, compared to January’s 50 mm (2.0 in) which falls over just 6 days. Despite slightly lower humidity in September at 68%, it still provides a much warmer and wetter environment than the cold, crisp air of January with a humidity of 71%. For more details, you can check out Tianmen weather in January.

September typically offers warm temperatures, with a minimum of 15°C (59°F), averaging around 25°C (77°F), and reaching highs of 36°C (98°F). This month also experiences higher precipitation at 88 mm (3.5 in), spread over about 10 days, with humidity levels around 68%. In contrast, February presents a much cooler climate, featuring a minimum temperature of -5°C (23°F), an average of 7°C (45°F), and a maximum of 27°C (80°F). Precipitation is less prevalent in February, totaling 45 mm (1.8 in) across roughly 8 days, though the humidity is slightly higher at 75%. For more details about the weather in February, you can check out Tianmen weather in February.

In September, temperatures are generally warmer, with a minimum of 15°C (59°F) and an average high of 36°C (98°F), creating a hot and muggy atmosphere, especially with humidity at 68%. In contrast, March experiences much cooler temperatures, with a low of 2°C (36°F) and an average high of 29°C (84°F), making it feel brisker overall despite a slightly higher precipitation level of 101 mm (4.0 in) over 12 days. The humidity in March reaches 84%, adding to the dampness of the season. For more details on March weather, check out Tianmen weather in March.

September and April exhibit notable contrasts in weather patterns. September typically boasts warmer temperatures, with a minimum of 15°C (59°F) and an average of 25°C (77°F), reaching up to 36°C (98°F). In contrast, April is cooler, featuring a minimum of 6°C (42°F) and an average of 17°C (64°F), with a maximum of 32°C (89°F). Precipitation in April is higher, totaling 133 mm (5.2 in), compared to September's 88 mm (3.5 in), although both months experience rain on about 10 days. Humidity levels are also elevated in April at 85%, compared to 68% in September. For more detailed information, check out Tianmen weather in April.

In comparing September and May weather, September tends to be warmer overall, featuring average temperatures of 25°C (77°F) with a maximum of 36°C (98°F). It experiences a relatively lower precipitation level of 88 mm (3.5 in) over approximately 10 days, alongside a humidity level of 68%. In contrast, May has cooler temperatures with a minimum of 11°C (52°F) and an average of 22°C (72°F), but it sees significantly more rainfall, totaling 182 mm (7.2 in) across about 12 days, paired with higher humidity at 82%. For a closer look at May's weather specifics, you can visit Tianmen weather in May.

September and June exhibit notably similar temperature ranges, with both months experiencing minimums around 15°C (59°F) and average highs of 25°C (77°F) in September and 26°C (79°F) in June. However, September tends to be slightly drier, receiving 88 mm (3.5 in) of precipitation over 10 days, compared to June's significantly wetter climate with 222 mm (8.7 in) over 13 days. Additionally, the humidity levels indicate a shift as June has a higher average humidity at 83%, contrasted with September’s 68%. These elements combine to create a more comfortable and drier atmosphere in September compared to June's wetter and more humid conditions. For more specific details about June weather, check out Tianmen weather in June.

When comparing the weather in September and July, we see notable differences in temperature and precipitation. July typically experiences a warmer climate, with an average temperature of 28°C (83°F) and maximums reaching up to 38°C (100°F). In contrast, September offers a slightly cooler average temperature of 25°C (77°F), with maximums peaking at 36°C (98°F).

Precipitation levels are significantly higher in July, recording 216 mm (8.5 in) across 14 days compared to September's 88 mm (3.5 in) over 10 days. Additionally, July's humidity is also higher at 87%, while September has a more moderate humidity level of 68%. For more detailed insights on July's weather patterns, check out Tianmen weather in July.

In comparing the weather of September and August, we see a notable decrease in both average temperature and humidity. September has a minimum temperature of 15°C (59°F), with an average of 25°C (77°F) and a maximum of 36°C (98°F), while August consistently stays warmer, with a minimum of 19°C (67°F), an average of 29°C (84°F), and a peak of 37°C (99°F). Additionally, September experiences slightly less precipitation, totaling 88 mm (3.5 in) over about 10 days, in contrast to August's 118 mm (4.7 in) spread over 12 days. Humidity also drops from 83% in August to 68% in September, contributing to a more comfortable atmosphere in the latter month. For more detailed insights into the August weather, you can visit Tianmen weather in August.

In September, the weather showcases a warm climate with average temperatures around 25°C (77°F) and occasional highs reaching up to 36°C (98°F). The month sees considerable rainfall, with a total precipitation of 88 mm (3.5 in) over 10 days and a relative humidity of 68%. In contrast, October experiences a notable drop in temperature, with minimums falling to 9°C (48°F) and an average of 18°C (64°F), while still allowing for some summertime heat with a maximum reaching the same 36°C (98°F). This month is drier, recording 59 mm (2.3 in) of precipitation spread over 7 days, and features slightly higher humidity at 72%. For more detailed information about the weather in October, you can check Tianmen weather in October.

September weather is characterized by warmer temperatures, with averages around 25°C (77°F) and highs reaching up to 36°C (98°F), making it a notably hot month. In contrast, November brings a significant drop in temperature, where the average falls to 13°C (56°F) and daily highs reach a maximum of 28°C (82°F). Precipitation is also less frequent in November, with only 41 mm (1.6 in) expected over about 7 days, compared to September's 88 mm (3.5 in) over 10 days. Moreover, humidity rises slightly in November to 83%, compared to September's 68%. For more detailed weather information, you can check Tianmen weather in November.

In September, the weather is typically warm, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 36°C (98°F) and an average temperature of 25°C (77°F). This month also sees significant precipitation, with about 88 mm (3.5 in) falling over approximately 10 days, while humidity levels hover around 68%. In contrast, December brings much cooler conditions, with temperatures dropping to a minimum of -4°C (25°F) and reaching a maximum of 19°C (66°F), averaging around 7°C (45°F). Precipitation is considerably lower in December, at 22 mm (0.9 in) over about 6 days, and humidity increases slightly to 79%. For more specific weather details, you can check Tianmen weather in December.

Compare Tianmen's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Tianmen

September in Tianmen transitions into a more temperate climate, providing a refreshing contrast to the sweltering summer months. With warm daytime temperatures averaging around 25°C, the heat lingers, but is often mitigated by the cooler evenings, creating a comfortable atmosphere for outdoor activities. The notable increase in rainfall, with about 10 days of precipitation, adds a lush vibrancy to the landscape, setting the stage for the onset of autumn. This month also experiences a higher humidity level, maintaining the tropical feel while hinting at the cooler days to come. For a deeper understanding of what to expect throughout the year, explore Tianmen Climate.