Last updated: August 21, 2025
In September, Longmen, China experiences a vibrant transition in weather, characterized by a maximum temperature reaching up to 36°C (97°F) and an average of 25°C (77°F). The minimum temperature dips to a cool 16°C (60°F), offering a comfortable respite from the heat. However, this month also brings significant rainfall, with a total precipitation of 143 mm (5.6 in) occurring over 14 days, contributing to a humidity level of 72%. Visitors can expect a mix of warm days and occasional showers, making September a dynamic month for exploring the scenic beauty of Longmen.
As September rolls into Longmen, China, the temperatures begin to shift, signaling the approach of autumn. With minimums around 16°C (60°F) and averages peaking at 25°C (77°F), the weather remains pleasantly warm, yet noticeably cooler than the sweltering summer months. The maximum temperatures can reach a robust 36°C (97°F), making it one of the last opportunities to enjoy the lingering warmth before the chill of October sets in. This transitional month offers a delightful balance, as the days are still sunny and inviting, perfect for outdoor activities, while the evenings cool down, creating a cozy atmosphere. Overall, September serves as a gentle segue from the intense heat of summer, inviting residents and visitors alike to savor the mild days and cooler nights.
In September, Longmen experiences a notable shift in its precipitation patterns, receiving 143 mm (about 5.6 in) of rain, marking a decrease from the summer months but still significant. This rainfall is spread over 14 days, maintaining the trend of relatively frequent showers typical of the late monsoon season. Following a peak in June, where 385 mm fell over 19 days, September presents a more moderate, yet steady, level of moisture, reflecting the region's transition into the drier autumn months. As the amount of precipitation begins to taper off, the drop in rainy days hints at the approaching seasonal shift, with October expected to bring only 60 mm over just 7 days. Despite this decline, September remains an essential month for sustaining the lush landscapes nurtured by the abundant rains of summer.
In Longmen, China, the humidity levels exhibit a distinct pattern as the year progresses, with September marking a notable shift. Following a peak in the summer months, where July reaches a humid 91%, September sees a decrease to 72%, signaling the gradual transition into autumn. This drop serves as a refreshing respite after the oppressive summer heat, though humidity remains relatively high compared to the chillier months that follow. As temperatures cool towards October, humidity slightly rises to 74%, but the overall trend showcases September as a pivotal moment of relief before winter approaches, highlighting the region's seasonal humidity fluctuations.
As summer transitions to autumn, September in Longmen, China maintains a very high UV Index of 10, requiring a burn time of just 15 minutes for those exposed to the sun. This marks a slight decline from the extreme levels seen in the peak months of June through August, but caution is still necessary as the sun remains powerful. The UV Index in September reflects a broader trend of decreasing intensity as the year progresses, yet it is indicative of the region's overall high UV exposure, especially from March to August when values soar above 9. The gradual shift serves as a reminder to stay protected under the sun, even as the seasons change. For more information about UV levels throughout the year, check out Longmen UV Index.
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As summer gracefully transitions to autumn, September in Longmen, China, boasts a remarkable 236 hours of sunshine, making it a delightful month for outdoor activities and exploration. Following the peak summer sun of 309 hours in August, there is a notable dip, yet September still retains a healthy amount of sun, significantly above the average of winter months. This trend showcases the region's capacity for extended summer-like conditions, as the sunshine hours steadily increased from the year’s low of 138 hours in January to a seasonal zenith in July. The gradual decline in daylight as autumn approaches serves as a reminder of nature's rhythms, encouraging both locals and visitors to soak in the beautiful sunshine while it lasts.
When considering the likelihood of sunny weather in September in Longmen, China, the forecast appears promising with a 42% chance of sunshine. This marks a noticeable improvement from the summer months, which see significantly lower probabilities, peaking at just 28% in August and declining to a mere 13% in July. The trend suggests that as summer fades into fall, the chances of sunny days begin to rise again. Though still below the winter months’ remarkable 65% in December, September offers a welcome reprieve from the overcast skies of the hotter season, inviting outdoor activities as the temperatures gradually cool.
As summer fades, September in Longmen, China ushers in a gradual reduction in daylight, offering 12 hours of sunlight each day. This marks a subtle decline from the vibrant 14 hours enjoyed in June, transitioning from the long, sunlit days of summer to the softer light of autumn. The rhythm of daylight throughout the year is distinctly echoed; it begins with shorter hours in January, steadily increasing through the spring months, reaching a peak in June before tapering off again as the year progresses toward winter. This cyclical pattern not only highlights the characteristic rhythm of seasonal change but also serves as a reminder of nature’s beautiful transitions.
In Longmen, China, September ushers in a gentle breeze with an average wind speed of 1.9 m/s (4 mph), slightly lower than the more blustery months of January and October, which each register at 2.1 m/s (5 mph). This month marks a subtle transition, as the summer winds of July peak at 2.6 m/s (6 mph) before giving way to the milder conditions of early autumn. Meanwhile, June experiences a notable dip to just 1.5 m/s (3 mph), the calmest of the year. As September settles in, the wind offers a refreshing yet tranquil atmosphere, embodying the seasonal shift that invites both reflection and the anticipation of cooler days ahead.
Weather in Longmen varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Longmen, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather conditions. In September, temperatures range from a mild minimum of 16°C (60°F) to a sweltering maximum of 36°C (97°F), with an average of 25°C (77°F). This month sees considerable precipitation, with 143 mm (5.6 in) over approximately 14 days, accompanied by high humidity levels of 72%. In contrast, January experiences much colder temperatures, with a minimum of -10°C (14°F) and an average of only 6°C (43°F), peaking at 23°C (74°F). The precipitation in January is lower at 79 mm (3.1 in), falling over about 10 days, and humidity is somewhat lower at 65%. For more details, visit Longmen weather in January.
September and February present stark contrasts in weather characteristics. In September, temperatures range from a mild 16°C (60°F) at night to a sweltering 36°C (97°F) during the day, accompanied by significant rainfall totaling 143 mm (5.6 in) over 14 days. This month also experiences high humidity at 72%, creating a warm, humid climate. Conversely, February brings a much cooler environment, with temperatures dipping to a minimum of -4°C (25°F) and averaging around 7°C (45°F), peaking at 27°C (81°F) during the warmer days. Precipitation is lighter in February at 73 mm (2.9 in) over 10 days, and the humidity remains relatively stable at 71%. For more details on February weather, you can check Longmen weather in February.
The weather in September is characterized by warmer temperatures, with an average of 25°C (77°F) and highs reaching up to 36°C (97°F), making it a hot month. In contrast, March experiences much cooler conditions, with average temperatures of 13°C (55°F) and maximums of 29°C (85°F). Both months have similar precipitation levels, with September receiving 143 mm (5.6 in) over 14 days, while March has slightly less at 138 mm (5.4 in) over 15 days. Additionally, humidity is higher in March at 81%, compared to September's 72%. For more detailed insights about March weather, you can visit Longmen weather in March.
In September, the weather is generally warmer, with average temperatures reaching 25°C (77°F) and highs soaring up to 36°C (97°F). The month experiences a total precipitation of 143 mm (5.6 in) over 14 days, and humidity levels are typically around 72%. In contrast, April is much cooler, featuring a minimum temperature of 2°C (36°F) and an average of 17°C (63°F). The maximum temperature in April peaks at 33°C (92°F), with a lower total precipitation of 107 mm (4.2 in) occurring across 12 days. Additionally, humidity is higher in April at 86%, making it feel quite moist and fresh. For more details on April weather patterns, check out Longmen weather in April.
The weather in September and May presents notable contrasts. In September, temperatures typically range from a minimum of 16°C (60°F) to a maximum of 36°C (97°F), with an average of 25°C (77°F). The month sees considerable rainfall, averaging 143 mm (5.6 in) over about 14 days, along with a humidity level of 72%. In contrast, May boasts a slightly lower average temperature of 22°C (72°F), with a minimum of 10°C (51°F) and a maximum of 37°C (99°F). However, it has higher precipitation levels at 190 mm (7.5 in) over the same number of rainy days, along with increased humidity at 87%. For more detailed information on the weather in Longmen during May, you can refer to Longmen weather in May.
September and June exhibit similar average temperatures, hovering around 25°C (77°F). However, June tends to be slightly warmer with a maximum temperature reaching up to 37°C (98°F), compared to September's maximum of 36°C (97°F). One notable difference is precipitation; June receives significantly more rainfall at 385 mm (15.2 in) over 19 days, whereas September has 143 mm (5.6 in) across 14 days. Furthermore, humidity levels are higher in June, averaging 87%, compared to 72% in September. For more detailed insights into June weather, you can visit Longmen weather in June.
In comparing the weather between September and July, we can see notable differences in temperature and precipitation patterns. September generally enjoys milder temperatures, with a minimum of 16°C (60°F) and an average of 25°C (77°F), while July experiences hotter conditions, featuring a minimum of 21°C (69°F) and an average of 29°C (84°F). The maximum temperatures are also higher in July, reaching up to 40°C (105°F) compared to September's peak of 36°C (97°F). Additionally, July sees significantly more rainfall, totaling 301 mm (11.8 in) over 18 days, whereas September receives 143 mm (5.6 in) over 14 days. This results in July's higher humidity level of 91% compared to September’s 72%, contributing to a more oppressive heat in the summer month. For those interested in July's specifics in Longmen, further details can be found here: Longmen weather in July.
In comparing the weather patterns of September and August, September tends to be slightly cooler with an average temperature of 25°C (77°F), while August boasts a higher average of 29°C (85°F). The maximum temperatures also reflect this trend, with September reaching 36°C (97°F) compared to August's peak of 39°C (102°F). August experiences more precipitation, totaling 183 mm (7.2 in) over the month, whereas September sees 143 mm (5.6 in). Additionally, humidity levels are higher in August at 87%, compared to September's 72%. For a detailed overview, you can check Longmen weather in August.
In September, the weather is generally warmer with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 36°C (97°F) and an average of 25°C (77°F). The month also sees significant rainfall with 143 mm (5.6 in) over 14 days, accompanied by a humidity level of 72%. In contrast, October experiences cooler temperatures, with a minimum of 7°C (45°F), an average of 19°C (67°F), and a maximum of 35°C (95°F). Precipitation drops sharply to 60 mm (2.4 in) over just 7 days, while humidity slightly increases to 74%. For more specific weather details, you can check Longmen weather in October.
September and November offer strikingly different weather conditions. In September, temperatures soar with a minimum of 16°C (60°F) and maximum highs reaching up to 36°C (97°F), while the average temperature sits at a warm 25°C (77°F). With 143 mm (5.6 in) of precipitation over 14 days and humidity at 72%, September can feel quite muggy and wet. In contrast, November brings a significant drop in temperatures, with a minimum of 1°C (34°F) and an average of 14°C (57°F), peaking at 30°C (86°F). Rainfall reduces to 64 mm (2.5 in) across 10 days, and humidity rises to 80%, resulting in a cooler, crisper atmosphere. For more details, visit Longmen weather in November.
September and December present stark contrasts in weather conditions. September typically features warm temperatures, with a minimum of 16°C (60°F), an average of 25°C (77°F), and highs reaching up to 36°C (97°F). It also experiences relatively high humidity at 72% and significant rainfall, accumulating 143 mm (5.6 in) over 14 days. In contrast, December's climate is much cooler, with temperatures ranging from a chilly -4°C (25°F) at night to a maximum of 23°C (73°F) during the day, averaging only 8°C (46°F). The month sees reduced precipitation totaling 73 mm (2.9 in) over 9 days, alongside slightly higher humidity at 78%. For more detailed information on December weather, you can visit Longmen weather in December.
As summer transitions to autumn, September in Longmen brings a notable shift in weather patterns compared to the hotter months of July and August. With an average temperature of 25°C (77°F), the days are still warm but more comfortable, offering a pleasant respite from the scorching heat. However, the month is also characterized by increased rainfall, with 14 days of precipitation contributing to a humidity level of 72% that adds a refreshing touch to the air. This combination of warmth and moisture not only enhances the lush vegetation but also creates a unique atmosphere distinct from the dry heat of summer. For a comprehensive understanding of this month's climate nuances, explore Longmen Climate.