September Weather in Longgang, China

Last updated: August 21, 2025

September in Longgang, China, presents a dynamic blend of warmer temperatures and notable humidity. With maximum highs reaching 37°C (99°F) and an average of 25°C (77°F), the month is characterized by a comfortable yet warm climate. Evening temperatures can drop to a refreshing 16°C (62°F), offering a pleasant respite from the daytime heat. However, be prepared for occasional rainfall, as 124 mm (4.9 in) of precipitation falls over 12 days throughout the month, contributing to a humidity level of 66%. This combination makes for a vibrant and lively atmosphere, perfect for exploring Longgang's rich culture and scenery.

September Temperature in Longgang

In September, Longgang, China, begins to cool down from the sweltering summer heat, with temperatures reflecting a gradual shift in the season. The minimum temperature settles at a comfortable 16°C (62°F), while the average reaches a pleasant 25°C (77°F), making outdoor activities enjoyable. As daytime heats up, the maximum temperature can climb to a steamy 37°C (99°F), hinting that the summer's lingering warmth is still in play. This month signifies a transition, where the earthy scents of autumn start to blend with the fading remnants of summer, offering a unique charm to the region. With temperatures steadily declining as the year progresses, September serves as a beautiful prelude to the cooler months ahead.

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

The chart illustrates September temperature patterns in Longgang, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Longgang, 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).
JanFebMarAprMayJunJulAugSepOctNovDec414555647278848477655645
Data source: Temperature data for Longgang generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Longgang

In September, Longgang, China experiences a noticeable shift in precipitation patterns, recording 124 mm (4.9 in) of rain over 12 days. This marks a decrease from the heavy downpours of the summer months, where July and June saw over 230 mm, showcasing a gradual transition into drier autumn conditions. The decrease in rainfall, coupled with a drop in wet days, hints at the waning monsoon influence, as September offers a reprieve from the intense precipitation typical of the peak summer months. This trend not only signals the end of peak rainfall but also sets the stage for the cooler and less humid days ahead, underscoring Longgang’s dynamic climate shifts throughout the year.

September Precipitation Trends in Longgang

The chart displays monthly precipitation patterns in Longgang, 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 Longgang, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec6687158150174233236152124495541
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Longgang

As the summer heat begins to wane, September in Longgang, China, brings a notable shift in humidity levels, dropping to 66%. This decline marks the lowest point of the year, providing a welcome respite from the peak humidity experienced in the midsummer months, which soared to 89% in July. Following the trend of increasing moisture from January to August, September signals a transition towards the drier autumn months, with humidity levels gradually rising again in October to 68%. This fluctuation showcases the region's typical seasonal rhythm, where high humidity gives way to more comfortable conditions as the year progresses.

September Average Humidity in Longgang

This chart illustrates the average monthly humidity levels in Longgang, 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 Longgang is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec69%71%83%86%85%86%89%85%66%68%77%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Longgang

In September, Longgang experiences a UV Index of 10, categorized as very high, indicating that sun exposure can lead to skin damage in just 15 minutes. This marks a slight decrease from the extreme levels seen in the summer months, where the index peaked at 13 in July. As we transition from the sweltering heat of August back to slightly milder conditions, September serves as a reminder that precautions are still essential. Overall, the trend shows that while the summer months bring some of the highest UV levels, the early autumn still demands vigilance to protect against harmful rays. For more detailed information, check out the Longgang UV Index.

Maximum UV Index Levels in Longgang for September

The chart shows the monthly maximum UV Index (UVI) for Longgang 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 Longgang typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec679101112131210875
Data source: Longgang 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 Longgang

September in Longgang, China, offers a delightful transition into fall, with an impressive 257 hours of sunshine. Following the peak summer months, where August dazzles with a radiant 309 hours, September sees a gentle decline in sunlight, yet still remains vibrant and bright. This month effectively bridges the warm days of summer and the mild warmth of autumn, reflecting a pattern of gradually decreasing daylight hours that begins in late summer. As sunlight wanes towards the end of the year, September still stands out as a precious pocket of radiant days before the cooler months set in. With its abundant sunshine, September is an ideal time for outdoor activities, soaking up the last golden rays of the season.

Monthly Sunshine Duration in Longgang: September Highlighted

The September sunshine duration represents the total number of hours Longgang 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.
JanFebMarAprMayJunJulAugSepOctNovDec148h196h208h229h267h260h293h309h257h212h210h207h
Data source: Longgang September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Longgang During September

In Longgang, China, the likelihood of sunny weather sees a noticeable uptick in September, with a 61% chance of sunshine that marks a delightful transition from summer to autumn. This increase is particularly significant compared to the preceding months, where the probabilities hover between 18% and 39%. As the summer heat ebbs, September emerges as a blooming oasis of clearer skies, setting it apart as an ideal time for outdoor activities. Following this sunny month, the chance of clear skies dips slightly in October to 39%, yet November and December bring back the brightness with 56% and 62%, respectively. Thus, those looking to enjoy the warmth of the sun should certainly consider September as a prime opportunity for sunny adventures in Longgang.

Percentage of Sunny Days in September in Longgang

The chart illustrates the percentage of sunny days in Longgang 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 Longgang experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec50%39%23%18%23%24%30%33%61%39%56%62%
Data source: Longgang September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Longgang in September

In September, Longgang, China, enjoys a delightful 12 hours of daylight, marking a gentle transition from the vibrant summer months. As the sun begins to set earlier, this month continues the gradual decline in daylight that follows the peak of 14 hours in June. Following the warmth of June and July, where daylight is plentiful, September offers a balanced blend of sunlit days while hinting at the autumn chill to come. As daylight hours decrease in the coming months, the rhythm of the seasons becomes increasingly evident, inviting a slowdown and a chance to savor the softer tones of nature.

Average Daylight Hours in Longgang for September

The chart illustrates the variation in daylight duration in Longgang throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 27m11h 7m11h 59m12h 53m13h 38m14h13h 49m13h 9m12h 18m11h 25m10h 39m10h 15m
Data source: Longgang daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Longgang

As September rolls into Longgang, China, the gentle caress of the wind reflects a subtle transition in the climate. With an average wind speed of 1.8 m/s (4 mph), September maintains a steady calmness akin to the preceding summer months. While July and March briefly flirt with 2.1 m/s (5 mph), giving a hint of briskness, the overall trend shows a slight decline in wind intensity as we edge from the warmth of summer into the softer whispers of autumn. This gradual ebb in wind speed, peaking in the lively summer and mellowing through the later months, enhances the serene backdrop of Longgang, inviting residents and visitors alike to embrace the tranquil beauty of early fall.

Average September Wind Speed in Longgang

The chart displays monthly wind speed patterns in Longgang, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.02.02.11.91.91.72.11.71.8 m/s2.12.11.8
Data source: Longgang September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Longgang Compares to Other Months

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

In September, the weather is characterized by warm temperatures, with a minimum of 16°C (62°F) and an average of 25°C (77°F), peaking at a sweltering 37°C (99°F). The month also sees considerable rainfall, receiving 124 mm (4.9 in) over 12 days, resulting in a humidity level of 66%. In stark contrast, January brings much cooler conditions, with temperatures ranging from a chilly minimum of -6°C (21°F) to a maximum of 20°C (67°F), averaging just 5°C (42°F). Precipitation is lighter in January at 66 mm (2.6 in) over 9 days, and humidity slightly increases to 69%. For more details on January weather, you can visit Longgang weather in January.

September and February present strikingly contrasting weather patterns. In September, temperatures range from a mild 16°C (62°F) at night to a scorching 37°C (99°F) during the day, with an average of 25°C (77°F). The month also sees significant rainfall, totaling 124 mm (4.9 in) over 12 days, while the humidity sits at a comfortable 66%. In comparison, February brings much cooler conditions, with nighttime lows plummeting to -3°C (26°F) and daytime highs peaking at 26°C (79°F). The average temperature is significantly lower at 7°C (45°F), and although there is less total precipitation at 87 mm (3.4 in), it falls on 11 days, coupled with a higher humidity of 71%. The contrast between these two months highlights the seasonal shifts in climate. For more detailed information about February's weather, check out Longgang weather in February.

September and March present contrasting weather patterns. In September, temperatures range from a minimum of 16°C (62°F) to a maximum of 37°C (99°F), with an average of 25°C (77°F), creating a warm atmosphere. However, it also experiences significant rainfall, with about 124 mm (4.9 in) spread across 12 days, and humidity levels sitting at 66%. In contrast, March is much cooler, featuring temperatures that range from a chilly 3°C (38°F) to a comfortable 29°C (85°F), with an average of 13°C (55°F). Rainfall in March is slightly higher at 158 mm (6.2 in) over 16 days, and humidity is noticeably greater at 83%. For more details on March weather, you can visit Longgang weather in March.

In comparing the weather of September and April, we see distinct differences in temperature and precipitation. September boasts a warmer average temperature of 25°C (77°F), with highs reaching up to 37°C (99°F), while April has a cooler average of 18°C (64°F) and a maximum of 34°C (93°F). Additionally, April experiences higher humidity at 86%, compared to September's 66%. Precipitation levels are also notable, with April receiving 150 mm (5.9 in) over 13 days, slightly more than September's 124 mm (4.9 in) spread across 12 days. For a detailed look at the April climate, you can visit Longgang weather in April.

In September, the weather typically features a minimum temperature of 16°C (62°F) and an average high of 25°C (77°F), with a peak reaching up to 37°C (99°F). While it experiences 124 mm (4.9 in) of rainfall over approximately 12 days, the humidity sits at a moderate 66%. In contrast, May presents a cooler start with minimum temperatures around 12°C (54°F) and an average temperature of 22°C (73°F), peaking at 35°C (95°F). This month sees more significant rainfall, totaling 174 mm (6.9 in) spread over 14 days, accompanied by higher humidity levels at 85%. For a more detailed look, check out Longgang weather in May.

In comparing the weather between September and June, we see some notable differences. September tends to have slightly warmer temperatures, with an average of 25°C (77°F) and a maximum of 37°C (99°F), while June shows a comparable average of 26°C (79°F) and a maximum of 36°C (97°F). However, June experiences significantly higher precipitation, with 233 mm (9.2 in) falling over 18 days, compared to September's 124 mm (4.9 in) over 12 days. Additionally, the humidity is notably higher in June at 85%, compared to September's 66%. For more specific details about rainfall and conditions, you can check Longgang weather in June.

In comparing the weather between July and September, July is characterized by higher average temperatures, with a minimum of 21°C (70°F) and a maximum that can reach up to 40°C (103°F). In contrast, September sees cooler temperatures, ranging from a minimum of 16°C (62°F) to a maximum of 37°C (99°F). Additionally, July experiences significantly more precipitation, totaling 236 mm (9.3 in) over 17 days, compared to September's 124 mm (4.9 in) over 12 days. This results in higher humidity levels in July at 89%, compared to September's 66%. For more detailed information on July weather, you can visit Longgang weather in July.

In September, the weather tends to cool slightly compared to August, with minimum temperatures averaging around 16°C (62°F) compared to 22°C (71°F) in August. The average temperature in September reaches 25°C (77°F), which is lower than August's average of 29°C (84°F), offering some relief from the heat. However, September experiences a maximum temperature of 37°C (99°F), just shy of August's peak of 38°C (101°F). Precipitation decreases in September to 124 mm (4.9 in) over 12 days, while August has a higher total of 152 mm (6.0 in) across 14 days. Additionally, humidity levels drop from 85% in August to 66% in September, making the latter month feel less muggy. For more detailed information about August weather, you can check Longgang weather in August.

In September, the weather is typically warmer with an average temperature of 25°C (77°F), reaching highs up to 37°C (99°F). The month experiences substantial rainfall, totaling 124 mm (4.9 inches) over approximately 12 days, and maintaining a humidity level of about 66%. In contrast, October sees a significant drop in temperatures, with an average of 18°C (65°F) and typical highs around 36°C (97°F). Precipitation decreases to 49 mm (1.9 inches) over 8 days, while humidity rises slightly to 68%. For more detailed information, you can check Longgang weather in October.

In September, the weather is significantly warmer, with average temperatures around 25°C (77°F) and maximums reaching up to 37°C (99°F). This month also experiences considerable rainfall, totaling 124 mm (4.9 in) over 12 days, combined with a humidity level of 66%. In contrast, November brings a dramatic drop in temperatures, averaging just 13°C (56°F) with maximums of 27°C (80°F) and minimums dipping to 3°C (38°F). Rainfall decreases to 55 mm (2.2 in) over 9 days, while humidity rises to 77%. For more detailed information on November weather, visit Longgang weather in November.

September and December present starkly contrasting weather conditions. In September, the temperatures range from a minimum of 16°C (62°F) to a maximum of 37°C (99°F), with an average of 25°C (77°F), making it a warm month. In contrast, December sees considerably cooler temperatures, with a minimum of -4°C (26°F) and an average of just 7°C (45°F), peaking at 19°C (66°F). Precipitation also differs significantly; September typically registers 124 mm (4.9 in) over 12 days, while December experiences only 41 mm (1.6 in) over just 7 days. Humidity in December is higher at 78%, compared to 66% in September, adding to the chill in the air. For a detailed look at the weather conditions, you can check Longgang weather in December.

Compare Longgang's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Longgang

September in Longgang marks a transition in weather, presenting a noticeable shift from the harsh heat of summer to a more temperate climate. As the month progresses, the average temperature dips, providing relief with milder days and cooler evenings. While rainfall is still present, contributing to the overall humidity of 66%, it is less intense than during the summer months, bringing a refreshing variety to the weather patterns. This blend of warmth and occasional showers makes September an inviting time to experience the beauty of Longgang, as nature begins to shift towards autumn. For more detailed insights, visit Longgang Climate.