September Weather in Guanxi, China

Last updated: August 21, 2025

In September, Guanxi experiences a dynamic climate characterized by warm temperatures and moderate humidity. With maximum temperatures soaring to 37°C (99°F) and an average of 25°C (77°F), the days can feel quite toasty. The nights offer a reprieve with minimum temperatures around 16°C (61°F), making evenings pleasant. This month also sees an average precipitation of 113 mm (4.4 in) spread over 11 days, contributing to the region's lush scenery. Expect high humidity levels of 70%, which can make the heat feel more intense, highlighting the need for hydration and proper sun protection while enjoying the vibrant landscapes of Guanxi.

September Temperature in Guanxi

In September, Guanxi experiences a notable shift in temperatures, signaling the transition from the sweltering summer months to the cooler autumn season. The minimum temperature hovers around 16°C (61°F), offering a mild start to the day, while the average climbs to 25°C (77°F), creating comfortable conditions for outdoor activities. As the heat of the summer begins to wane, the maximum temperature peaks at 37°C (99°F), suggesting that while the days can still be quite warm, early mornings and evenings become increasingly refreshing. This gradual dip in temperatures, coupled with lower humidity levels, makes September an ideal month for both locals and visitors to explore the region and enjoy its rich cultural experiences.

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

The chart illustrates September temperature patterns in Guanxi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guanxi, 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).
JanFebMarAprMayJunJulAugSepOctNovDec424656647279848477655746
Data source: Temperature data for Guanxi 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 Guanxi

September in Guanxi, China marks a shift in the region's precipitation patterns, with rainfall measuring 113 mm (4.4 in) over 11 days. This month sees a noticeable decrease from the heavier summer months, where July and August recorded 186 mm and 163 mm, respectively. Despite this reduction, September's rainfall is still significant, contributing to a cumulative annual total that highlights the tropical climate. As the region transitions into autumn, the lingering moisture serves to sustain the lush landscapes of Guanxi, while the frequency of rain begins to taper off in the following months. This pattern reflects a broader trend of decreasing precipitation as the year progresses, setting the stage for the drier conditions typical in the cooler months ahead.

September Precipitation Trends in Guanxi

The chart displays monthly precipitation patterns in Guanxi, 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 Guanxi, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec6167138119147172186163113755836
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Guanxi

As September rolls into Guanxi, China, the humidity takes a refreshing dip to 70%, marking a distinct shift from the sultry summer months. While the preceding months of June and July see humidity levels soar to 87% and 89%, respectively, the transition to September heralds a more comfortable atmosphere, reminiscent of January’s 71% humidity. This decrease serves as a precursor to the mild autumn that follows, with October inching back up to 72%. Overall, the trend showcases a consistent pattern of high humidity peaking in the summer, before gradually easing into the dryer and crisper days of fall.

September Average Humidity in Guanxi

This chart illustrates the average monthly humidity levels in Guanxi, 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 Guanxi is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec71%75%86%86%86%87%89%86%70%73%83%76%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Guanxi

In September, Guanxi, China experiences a UV Index of 10, categorizing the exposure level as very high and indicating a burn time of only 15 minutes for unprotected skin. This marks a slight decrease from the extreme levels seen in the peak summer months of July and August, which recorded indices of 12. However, September continues to demand caution, as the UV levels remain significantly elevated, mirroring the intensity seen in the earlier spring months of April and May. As autumn approaches, the UV Index gradually decreases, suggesting a decrease in solar intensity. For more detailed insights on UV exposure and safety, check out Guanxi UV Index.

Maximum UV Index Levels in Guanxi for September

The chart shows the monthly maximum UV Index (UVI) for Guanxi 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 Guanxi typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec668101011121210965
Data source: Guanxi 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 Guanxi

September in Guanxi, China, is a radiant transition, where the lingering warmth of summer begins to ebb. With an impressive 242 hours of sunshine, it's a month that balances the summer's exuberance and the crispness of the approaching autumn. This decline from the peak summer brilliance of August, which boasts 304 hours, highlights a gradual shift towards shorter days, but it still surpasses the initial months of the year. From the 155 hours in January to the flourishing 261 hours in May, the sunshine data reveals a trend of increasing daylight leading to a splendid peak in the summer. As the region moves into fall, September retains a generous amount of sunshine, setting a picturesque backdrop for exploration before the cooler months settle in.

Monthly Sunshine Duration in Guanxi: September Highlighted

The September sunshine duration represents the total number of hours Guanxi 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.
JanFebMarAprMayJunJulAugSepOctNovDec155h196h212h222h261h260h300h304h242h196h199h209h
Data source: Guanxi September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Guanxi During September

In Guanxi, China, the likelihood of basking in sunny weather sees a noteworthy shift as September rolls in, with a 57% chance of sunshine that stands out against the predominantly lower percentages of the earlier months. This late summer month marks a significant peak in clear skies, contrasting sharply with the dreariness of March and April, which dip to 21% and 13%, respectively. As the year progresses, the chances of sun gradually increase from June's 21% to September's promising figures, suggesting that this is an ideal time for outdoor adventures and enjoying the vibrant landscape. With the sunny season giving way to autumn, visitors can relish the beautiful transition of the region, making September a highlight for those seeking sunny escapes.

Percentage of Sunny Days in September in Guanxi

The chart illustrates the percentage of sunny days in Guanxi 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 Guanxi experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec49%37%21%13%24%21%27%32%57%30%48%52%
Data source: Guanxi September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Guanxi in September

As the year unfolds in Guanxi, China, the daylight duration experiences a fascinating ebb and flow. Kicking off at 10 hours in January, the days gradually lengthen, reaching a peak of 13 hours from May through August, creating long, sun-soaked afternoons perfect for outdoor activities. However, as September arrives, daylight begins to dwindle, retreating to 12 hours. This shift signals the transition toward autumn, heralding shorter days ahead in October and November, when sunlight resumes its descent to 11 hours and then back to 10 hours by December. This rhythmic cycle not only marks the seasonal changes but also offers a glimpse into the vibrant and dynamic natural environment of Guanxi throughout the year.

Average Daylight Hours in Guanxi for September

The chart illustrates the variation in daylight duration in Guanxi throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 30m11h 9m11h 59m12h 51m13h 35m13h 57m13h 46m13h 8m12h 18m11h 26m10h 41m10h 18m
Data source: Guanxi daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Guanxi

As September arrives in Guanxi, the average wind speed settles at a gentle 2.3 m/s (5 mph), mirroring the calm of the preceding summer months. This consistent breeze reflects a trend of relatively stable winds from May through September, providing a serene backdrop for the region's lush landscapes. While the winds are tepid during these late summer days, they pick up notably in October, reaching 3.3 m/s (7 mph), hinting at the invigorating change of seasons ahead. This gradual increase from the summer months into autumn draws a pleasing contrast to the stronger gusts that characterize the later months, emphasizing the area's unique climatic rhythm.

Average September Wind Speed in Guanxi

The chart displays monthly wind speed patterns in Guanxi, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.52.52.62.22.02.32.32.3 m/s3.32.22.3
Data source: Guanxi September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Guanxi Compares to Other Months

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

September and January present contrasting weather conditions. In September, temperatures range from a mild 16°C (61°F) at night to a sweltering 37°C (99°F) during the day, with an average of 25°C (77°F). The month also sees significant rainfall, totaling 113 mm (4.4 in) over about 11 days, contributing to a humidity level of 70%. In stark contrast, January experiences much cooler temperatures, with a minimum of -6°C (22°F) and an average of only 6°C (43°F), peaking at a maximum of 20°C (69°F). Precipitation is lighter in January, with 61 mm (2.4 in) spread across 8 days and a slightly higher humidity of 71%. For more detailed information on the weather in January, you can visit Guanxi weather in January.

September typically showcases a warm climate, with average temperatures ranging from a mild 16°C (61°F) at night to a scorching 37°C (99°F) during the day. The month experiences high humidity at around 70% and significant rainfall, totaling 113 mm (4.4 in) over approximately 11 days. In contrast, February brings a stark shift in weather patterns, featuring much cooler temperatures, with a minimum of -4°C (25°F) and an average of 8°C (46°F), peaking at 28°C (82°F). Despite a lower total precipitation of 67 mm (2.7 in) over the same number of rainy days, the humidity remains relatively high at 75%. For more details on February weather specifics, you can check out Guanxi weather in February.

September and March present distinct weather patterns characterized by notable differences in temperature and humidity. In September, temperatures range from a comfortable minimum of 16°C (61°F) to a scorching maximum of 37°C (99°F), with an average of 25°C (77°F) and relatively high humidity at 70%. The month experiences 113 mm (4.4 in) of precipitation over approximately 11 days. In contrast, March showcases cooler temperatures, with a minimum of 4°C (39°F) and a maximum of 31°C (88°F), averaging at 13°C (56°F). This month also sees increased precipitation, totaling 138 mm (5.4 in) over 14 days, and a higher humidity level of 86%. For more details on specific conditions, you can check out Guanxi weather in March.

September and April exhibit distinct weather patterns, making them quite different months. In September, temperatures range from a minimum of 16°C (61°F) to a maximum of 37°C (99°F), with an average of 25°C (77°F), while April sees cooler temperatures, hovering between 6°C (43°F) and 33°C (91°F), with an average of 18°C (64°F). Precipitation levels are somewhat similar, with September receiving 113 mm (4.4 in) over 11 days compared to April's 119 mm (4.7 in) over 16 days, suggesting that April is slightly wetter. Additionally, April experiences higher humidity at 86%, compared to September's 70%. For a more detailed look at the April weather, visit Guanxi weather in April.

In comparing the weather of September and May, September generally boasts warmer temperatures, with an average of 25°C (77°F) and highs reaching up to 37°C (99°F), while May tends to be cooler, averaging 22°C (72°F) with maximum temperatures of 36°C (97°F). However, May experiences higher humidity levels at 86%, compared to September’s 70%, contributing to a more muggy feel during the early summer month. Additionally, May has more precipitation, averaging 147 mm (5.8 in) over 14 days, whereas September sees slightly less, with 113 mm (4.4 in) over 11 days. For a more detailed look at the conditions in May, check out Guanxi weather in May.

September and June present relatively similar temperatures, with average highs reaching just below 37°C (99°F) in September and 36°C (97°F) in June. Notably, June tends to be slightly more humid, averaging 87% compared to 70% in September. Additionally, precipitation levels are higher in June, with 172 mm (6.8 in) over 15 days, versus 113 mm (4.4 in) over 11 days in September. This makes June a wetter month overall. For a closer look at the June weather specifics, you can visit Guanxi weather in June.

In comparing the weather of September and July, September tends to be slightly cooler, with average temperatures around 25°C (77°F) compared to July's warmer average of 29°C (84°F). July experiences higher maximum temperatures, reaching up to 40°C (104°F), while September usually peaks at 37°C (99°F). Additionally, July is characterized by considerably higher precipitation, totaling 186 mm (7.3 in) over 15 days, compared to September's 113 mm (4.4 in) over 11 days. The humidity is also notably higher in July at 89%, versus 70% in September. For more detailed insights, check out Guanxi weather in July.

In comparing the weather of September and August, September features a slightly cooler temperature range with minimums of 16°C (61°F) and average highs of 25°C (77°F), while August experiences higher temperatures, peaking at 40°C (104°F). Additionally, August tends to be more humid, with an average of 86% compared to September's 70%. Precipitation is also higher in August, totaling 163 mm (6.4 in) over 15 days, whereas September sees 113 mm (4.4 in) across 11 days. For a more detailed look at the weather in August, you can check Guanxi weather in August.

September and October weather exhibits notable differences, particularly in temperature and precipitation. In September, the minimum temperature averages around 16°C (61°F) and peaks at a sweltering 37°C (99°F), with an average of 25°C (77°F). The month also experiences 113 mm (4.4 in) of rainfall over 11 days, accompanied by a humidity level of 70%. In contrast, October sees a significant drop in the average temperature, with a minimum of 9°C (48°F) and an average of 18°C (65°F), while still reaching a maximum of 37°C (98°F). Precipitation decreases to 75 mm (2.9 in) over 9 days, and humidity rises slightly to 72%. For a more detailed look at weather conditions in October, you can explore Guanxi weather in October.

September and November present a notable contrast in weather patterns. September boasts warmer temperatures with a minimum of 16°C (61°F) and an average of 25°C (77°F), peaking at an impressive maximum of 37°C (99°F). This month also experiences higher precipitation, totaling 113 mm (4.4 in) over 11 days, combined with moderate humidity at 70%. In contrast, November sees a significant drop in temperatures, with a minimum of 4°C (40°F) and an average of 14°C (57°F), while the maximum reaches a more moderate 30°C (86°F). The precipitation decreases to 58 mm (2.3 in) across 10 days, accompanied by higher humidity levels at 82%. For a detailed look at weather patterns specific to this month, you can refer to Guanxi weather in November.

September weather is characterized by warm temperatures, with averages reaching a comfortable 25°C (77°F) and highs soaring to 37°C (99°F). However, this month also sees considerable rainfall, accumulating 113 mm (4.4 in) over about 11 days, and a humidity level around 70%. In contrast, December brings a significant drop in temperature, with averages plummeting to 8°C (47°F) and lows dipping as low as -2°C (28°F). Precipitation is minimal in December, totaling just 36 mm (1.4 in) over 7 days, while humidity slightly rises to 76%. For more detailed information, you can check Guanxi weather in December.

Compare Guanxi's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Guanxi

As September rolls in, Guanxi experiences a notable shift in its weather pattern, blending the tail end of summer's warmth with the onset of autumn's coolness. With maximum temperatures soaring up to 37°C and an average of 25°C, it's a month that can still boast balmy days, yet the nights cool down to a refreshing 16°C. Rainfall becomes more frequent, with 113 mm over 11 days, making it one of the wetter months. The humidity remains high at 70%, creating a tropical feel that characterizes this transitional period. For a deeper dive into how September fits into the overall climate of the region, check out Guanxi Climate.