September Weather in Gulou, China

Last updated: August 21, 2025

September in Gulou, China offers a blend of comfortable warmth and refreshing rain, with maximum temperatures reaching 28°C (83°F) and an average of 21°C (70°F). As the summer wanes, the minimum temperatures dip to a cool 11°C (52°F), creating a pleasant atmosphere for outdoor activities. Although rainfall is common, totaling 86 mm (3.4 in) over 8 days, the humidity level remains at a mild 72%, adding a touch of tropical appeal. Whether exploring local culture or enjoying nature, September's weather in Gulou sets the stage for memorable experiences.

September Temperature in Gulou

As September rolls into Gulou, China, the temperatures begin to shift, marking a delightful transition into early autumn. With minimums around 11°C (52°F) and averages peaking at 21°C (70°F), the weather becomes noticeably milder compared to the sweltering heights of summer. Max temperatures reach a pleasant 28°C (83°F), providing a comfortable warmth that invites outdoor exploration. This month represents a sweet spot where the oppressive heat of August recedes, allowing the crispness of fall to gradually seep in. Overall, September in Gulou is characterized by its moderate warmth, making it an ideal time for enjoying the changing scenery and embracing the joys of the season.

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

The chart illustrates September temperature patterns in Gulou, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gulou, 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).
JanFebMarAprMayJunJulAugSepOctNovDec222639526472797870554127
Data source: Temperature data for Gulou 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 Gulou

In September, Gulou experiences a significant shift in its weather patterns, with precipitation levels reaching 86 mm (3.4 in), mirroring the intensity seen in July. This rainfall typically occurs over 8 days, indicating a transition from the heavy monsoon-like conditions of August, which boasts the highest monthly total of 202 mm (7.9 in). The earlier months show a gradual increase in precipitation, particularly from May's 58 mm (2.3 in) to the summer peak in August. As the region moves into autumn, September's rainfall continues to sustain the growing season while signaling a slower return to drier months ahead, as seen in October with 54 mm (2.1 in). Overall, the trend illustrates a vibrant and dynamic climate, critical for local agriculture and ecology.

September Precipitation Trends in Gulou

The chart displays monthly precipitation patterns in Gulou, 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 Gulou, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec5914235860862028654338
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Gulou

In September, Gulou experiences a notable dip in humidity, settling at 72%, following the peak levels of 82% in July and 83% in August. This decrease signals a transition from the intense summer humidity, which often envelops the region, to a more comfortable atmosphere as autumn approaches. Despite the drop, September still retains a significant level of moisture in the air, reflecting the lingering warmth of late summer. This pattern of fluctuating humidity underscores the seasonal shift in Gulou, with the region typically experiencing its highest levels during the peak of summer, followed by gradual declines as the year progresses into cooler months.

September Average Humidity in Gulou

This chart illustrates the average monthly humidity levels in Gulou, 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 Gulou is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec54%44%48%55%65%71%82%83%72%76%66%52%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Gulou

As the summer months transition into September in Gulou, China, residents and visitors alike can expect a shift in the UV Index, which stands at a moderate 7 this month, categorized as high. This marks a decrease from the extreme levels seen in July, where the Index soared to 11, prompting a much shorter burn time of just 10 minutes. Even though September's burn time returns to a more manageable 25 minutes, it's still essential to stay vigilant about sun exposure. The UV Index remains relatively high compared to the cooler months, with October also reflecting a strong 6. As autumn approaches, it's crucial to be aware of these trends to protect your skin. For more detailed insights into UV levels throughout the year, visit Gulou UV Index.

Maximum UV Index Levels in Gulou for September

The chart shows the monthly maximum UV Index (UVI) for Gulou 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 Gulou typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2468891197632
Data source: Gulou 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 Gulou

September in Gulou, China, marks a transition as the sun’s presence begins to wane after the vibrant summer months. With 284 hours of sunshine, September sees a slight dip compared to the peak of 323 hours in July, but it still retains a warm glow, far surpassing the winter months ahead. The trend reveals a gradual decline from the lush sunbathing days in late spring and summer, with sunlight hours tapering off heading into autumn. Despite this decrease, September remains a delightful month, offering a balance of warmth and the early hints of fall, inviting residents and visitors alike to revel in the lingering brightness before the chill sets in.

Monthly Sunshine Duration in Gulou: September Highlighted

The September sunshine duration represents the total number of hours Gulou 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.
JanFebMarAprMayJunJulAugSepOctNovDec202h245h289h301h322h317h323h306h284h266h235h242h
Data source: Gulou September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Gulou During September

September in Gulou, China, presents a moderate likelihood of sunny weather, with a 43% chance of enjoying clear skies. This marks a slight drop from the summer months, where July and August see their sunniest days at 36% and 48% respectively. As autumn approaches, the probability of sunshine begins to pick up again in October, rising to 59%. Overall, while September may not be the sunniest month, it still offers a fair chance for outdoor activities under the sun, sitting comfortably between the summer’s peak and the more optimistic outlook of early fall.

Percentage of Sunny Days in September in Gulou

The chart illustrates the percentage of sunny days in Gulou 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 Gulou experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec61%72%60%55%53%42%36%48%44%60%66%80%
Data source: Gulou September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Gulou in September

As summer transitions to autumn, September in Gulou, China offers a delightful balance of daylight, with the sun gracing the skies for approximately 12 hours each day. This marks a gradual decline from the peak of 14 hours in June and July, reflecting the natural ebb of daylight as the year progresses. Following the vibrant months of May and June, where the daylight was at its longest, September serves as a gentle reminder of the forthcoming shorter days. After this month, daylight will further taper off, dipping to 11 hours in October, before settling at 9 hours by the time winter approaches. The smooth shifts in daylight duration showcase the beauty of seasonal change in Gulou, where each month paints a unique picture of nature's rhythm.

Average Daylight Hours in Gulou for September

The chart illustrates the variation in daylight duration in Gulou throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 38m10h 38m11h 56m13h 17m14h 25m14h 59m14h 42m13h 42m12h 25m11h 6m9h 56m9h 19m
Data source: Gulou daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Gulou

As the September winds gently sweep through Gulou, China, their average speed reaches a calm 3.6 m/s (8 mph), reflecting a trend of decreasing gusts from the summer months. Drawing from the broader yearly pattern, wind speeds are typically more robust at the start of the year, peaking in early winter with January averaging 4.3 m/s (10 mph) and steadily climbing to 5.0 m/s (11 mph) by November. However, as summer fades into autumn, a noticeable dip occurs from June to August, where speeds linger around 3.4 m/s to 3.7 m/s (8 mph). This gentle shift in September hints at the transition to autumn's invigorating breezes, setting the stage for a refreshing change as the year progresses.

Average September Wind Speed in Gulou

The chart displays monthly wind speed patterns in Gulou, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.35.14.65.05.03.73.53.43.6 m/s4.65.05.0
Data source: Gulou September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Gulou Compares to Other Months

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

September and January present starkly contrasting weather conditions. In September, temperatures range from a mild 11°C (52°F) to a warm 28°C (83°F), with an average temperature of 21°C (70°F). This month also sees significant rainfall, totaling 86 mm (3.4 in) over approximately 8 days, contributing to a humidity level of 72%. In contrast, January is markedly colder, with temperatures plummeting to a minimum of -19°C (-2°F) and a maximum of just 5°C (41°F), averaging around -5°C (22°F). The winter month is much drier as well, with only 5 mm (0.2 in) of precipitation over 1 day and a lower humidity level of 54%. For more details on January weather, check out Gulou weather in January.

September and February present starkly contrasting weather conditions. In September, temperatures range from a minimum of 11°C (52°F) to a pleasant average of 21°C (70°F), peaking at 28°C (83°F). The month experiences higher humidity at 72% and receives 86 mm (3.4 in) of precipitation over about 8 days. In contrast, February brings a chill, with temperatures plunging to a minimum of -16°C (4°F) and an average of -3°C (27°F), only reaching a maximum of 10°C (49°F). This month is significantly drier, with just 9 mm (0.4 in) of precipitation over 2 days and lower humidity at 44%. For more detailed insights on February weather, visit Gulou weather in February.

September and March exhibit stark contrasts in weather conditions. In September, temperatures range from a mild 11°C (52°F) to a warm 28°C (83°F) with an average of 21°C (70°F), accompanied by relatively high humidity at 72%. This month also sees considerable rainfall, with about 86 mm (3.4 in) of precipitation over approximately 8 days. In contrast, March is much cooler, with temperatures ranging from a chilly -9°C (16°F) to a mild 15°C (60°F), averaging only 4°C (39°F). Precipitation is minimal, totaling just 14 mm (0.6 in) over 3 days, and the humidity drops to 48%. For more detailed insights, you can refer to Gulou weather in March.

September and April present distinctly different weather experiences. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 28°C (83°F), with an average of 21°C (70°F), offering a warm and pleasant climate. In contrast, April starts off much cooler, with a minimum temperature of 0°C (33°F) and an average of 11°C (53°F), peaking at 23°C (74°F). Precipitation is also notable, with September seeing 86 mm (3.4 in) over 8 days compared to April’s 23 mm (0.9 in) spread over just 5 days. Additionally, September's humidity level is higher at 72%, while April maintains a drier 55%. For more specific details on April weather, you can visit Gulou weather in April.

September and May each offer distinct weather patterns. In September, temperatures range from a minimum of 11°C (52°F) to a comfortable average of 21°C (70°F), with a peak of 28°C (83°F). This month also experiences higher humidity at 72% and slightly more precipitation, averaging 86 mm (3.4 in) over about 8 days. In contrast, May presents milder conditions, with temperatures starting lower at a minimum of 7°C (44°F) and averaging 18°C (64°F), peaking at 29°C (85°F). The humidity is lower at 65%, and precipitation totals about 58 mm (2.3 in) over 6 days. For a closer look at May weather specifically, you can check out Gulou weather in May. Overall, September tends to be warmer and more humid, while May is cooler and drier.

In comparing the weather of September and June, we observe that September experiences slightly cooler temperatures, with a minimum of 11°C (52°F) and an average of 21°C (70°F), while June has a minimum of 14°C (57°F) and an average of 22°C (73°F). June tends to be warmer overall, reaching a maximum of 31°C (88°F), compared to September's maximum of 28°C (83°F). Additionally, September sees more precipitation, with 86 mm (3.4 in) over 8 days, whereas June has 60 mm (2.4 in) across just 6 days. Humidity levels are quite similar in both months, with September at 72% and June at 71%. For a more detailed look at June weather, you can refer to Gulou weather in June.

When comparing the weather in September and July, several key differences emerge. September typically experiences milder temperatures, with averages around 21°C (70°F) and a maximum of 28°C (83°F), while July tends to be hotter, with an average of 26°C (79°F) and highs reaching 33°C (91°F). Both months see similar precipitation levels of 86 mm (3.4 in), but September has slightly fewer rainy days at 8 compared to July’s 9 days. Additionally, humidity is higher in July at 82%, compared to September’s 72%. For more details about July's weather, you can visit Gulou weather in July.

September weather shows a noticeable shift compared to August, with cooler temperatures and reduced humidity. While August boasts an average high of 35°C (95°F) and minimums around 15°C (58°F), September offers a more moderate climate with average highs of 28°C (83°F) and lows of 11°C (52°F). Additionally, precipitation decreases significantly in September, dropping to 86 mm (3.4 in) over 8 days, compared to August's 202 mm (7.9 in) over 14 days, resulting in a drier atmosphere. For a more detailed look at August conditions, you can refer to Gulou weather in August.

September typically offers a warmer climate with average temperatures around 21°C (70°F), peaking at 28°C (83°F) and featuring relatively high humidity at 72%. This month also experiences more rainfall, with 86 mm (3.4 in) recorded over about 8 days. In contrast, October ushers in significantly cooler weather, with an average temperature of 13°C (56°F), dropping to a minimum of 2°C (36°F). While it remains slightly more humid at 76%, October sees less precipitation overall, with only 54 mm (2.1 in) falling during 6 days. For a detailed look at October weather patterns, you can visit Gulou weather in October.

September and November showcase a stark contrast in weather. In September, temperatures range from a mild 11°C (52°F) at night to a warm 28°C (83°F) during the day, with an average of 21°C (70°F). This month also experiences 86 mm (3.4 in) of precipitation over 8 days, along with a humidity level of 72%, which contributes to a generally humid atmosphere. In contrast, November brings a significant drop in temperatures, with a minimum of -8°C (17°F) and a daytime maximum of 18°C (65°F), averaging just 5°C (41°F). November is much drier too, with only 33 mm (1.3 in) of rain falling over just 3 days and a decrease in humidity to 66%. For more details on November weather, visit Gulou weather in November.

September and December present starkly contrasting weather conditions. In September, temperatures are mild, with an average of 21°C (70°F) and highs reaching up to 28°C (83°F), accompanied by relatively high humidity levels at 72%. The month also sees about 86 mm (3.4 in) of precipitation over roughly 8 days, making it a more humid and wetter time of year.

In contrast, December experiences much colder temperatures, with an average of -3°C (27°F) and maximums only reaching 10°C (50°F). Precipitation is minimal, totaling just 8 mm (0.3 in) over about 1 day, and humidity drops to 52%, highlighting the dry and frigid conditions typical of winter. For more details, you can check Gulou weather in December.

Compare Gulou's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Gulou

As summer transitions to autumn, September in Gulou brings a delightful shift in weather patterns. With temperatures averaging a comfortable 21°C (70°F), this month offers the perfect blend of warmth during the day and cool evenings. The increased humidity, around 72%, coupled with occasional rains—totaling about 86 mm over eight days—adds a refreshing touch. Compared to the sweltering heights of summer, September provides a more temperate climate that invites outdoor exploration and scenic enjoyment. For a detailed look at how Gulou's September weather compares to other months, check out Gulou Climate.