Last updated: August 21, 2025
In September, Guangzhou experiences a dynamic climate marked by a maximum temperature of 35°C (95°F), an average of 23°C (73°F), and a minimum of 14°C (57°F). This month witnesses significant precipitation totaling 187 mm (7.4 in) across approximately 16 days, contributing to a comparatively high humidity level of 71%. As the city transitions towards autumn, visitors can expect a mix of warm days and occasional rain, making it essential to plan accordingly for outdoor activities and sightseeing.
In September, Guangzhou experiences a noticeable transition as temperatures begin to cool slightly from the intense summer heat. The minimum temperature hovers around 14°C (57°F), while the average temperature rises to a comfortable 23°C (73°F), peaking at a balmy 35°C (95°F) during the day. This month often serves as a bridge between the sweltering peak summer months of July and August, where temperatures reached up to 37°C (98°F). The shift in weather encourages outdoor activities and exploration, as the city's humidity starts to relent, making it an ideal time for both locals and visitors to enjoy Guangzhou's vibrant atmosphere and scenic surroundings. Overall, September offers a delightful balance of warmth and a hint of autumn, setting the stage for the cooler months ahead.
In September, Guangzhou experiences a significant shift in its weather patterns, marked by a precipitation amount of 187 mm (7.4 in) over 16 days of rainfall. This month typically sees a gradual transition from the intense summer rains, beginning with the heavy downpours in June and July, which collectively peak at over 250 mm. September's rainfall, while still substantial, is lower than the peak summer months but higher than the subsequent months of October and November. This trend highlights a tapering of the monsoon season, as temperatures gradually cool and the number of rainy days decreases, leading into the drier months ahead. This combination of moderate rainfall and a decrease in rainy days suggests a weather pattern that supports lush vegetation while still allowing for clearer skies, creating an ideal climate for early autumn activities.
In Guanzhou, China, September marks a noticeable dip in humidity, dropping to 71% compared to the sweltering heights of summer. This month serves as a transitional period, following the peak humidity of 88% in July and 85% in August. As autumn approaches, the humidity begins to decrease, paving the way for more comfortable weather. Following September, humidity slightly rebounds to 74% in October, but remains lower than the summer months, suggesting a gradual shift towards drier conditions as the year progresses. Overall, September serves as a refreshing breath of relief before the humidity stabilizes throughout the fall months.
As September rolls into Guanzhou, China, the UV Index remains high at 11, reflecting an extreme exposure category that echoes the harsher summer months. With a burn time of just 10 minutes, individuals are encouraged to take significant precautions against sun damage. This month marks a slight decrease from July's peak UV Index of 13, yet it still demands attention similar to the conditions faced in April and May. As autumn approaches, the UV levels will gradually decline, but September serves as a reminder that sun safety is essential year-round. For those planning outdoor activities, staying informed is key—learn more about the UV Index trends and guidelines for Guanzhou here.
UV Risk Categories
As summer fades into early autumn, September in Guangzhou, China, offers a delightful pause with 211 hours of sunshine. This marks a notable shift from the sweltering heights of July and August, which basked in an impressive 292 and 303 hours, respectively. The sun's warm embrace lingers, yet there's a gentle decline in daylight, signaling the arrival of cooler weather. Comparing this to the stark beginnings of the year, where January struggled with only 109 hours, it's clear that September provides a sweet mid-point in the progression of the seasons, celebrating a blend of warmth and transition as the city prepares for the shorter days ahead. The increase from the early months shows a vibrant peak during the summer, but now, September invites a more balanced experience, perfect for enjoying the city's outdoor charms before autumn settles in.
In September, Guangzhou, China experiences a notable uptick in the likelihood of sunny weather, with a robust 48% chance of sunshine, making it the sunniest month of the year. This is a significant contrast to the preceding summer months of July and August, which see chances of sun hovering around 23% and 26% respectively. As the city transitions from the sweltering summer to the mild autumn, September's inviting sunshine creates a perfect backdrop for outdoor activities. Following this bright month, the chance of sunny days diminishes again, with October dropping to 24%. Overall, September stands out as a beacon of warmth and light, offering residents and visitors alike a delightful reprieve from the rainy seasons that bookend it.
As the warm embrace of summer begins to wane, September in Guangzhou, China witnesses a subtle yet noticeable shift in daylight duration. Transitioning from the peak summer months, where sunlight graces the city for a generous 13 hours, September experiences a gentle decline, offering 12 hours of daylight. This change marks the beginning of autumn, as the days gradually grow shorter, leading into the cooler months of October and November, where daylight diminishes to 11 hours and 10 hours, respectively. Overall, the trend showcases the rhythmic ebb and flow of daylight throughout the year, reflecting nature's transitions and the approach of seasonal change.
As September arrives in Guangzhou, the city experiences a slight uptick in wind activity, with average speeds reaching 1.6 m/s (4 mph). This marks a subtle increase from the summer months, where the wind hovered around 1.5 m/s (3 mph). The transition into autumn brings a refreshing breeze, hinting at a seasonal change that complements the warm, lingering temperatures. This increasing wind pattern suggests a gradual shift in the city's climatic dynamics, as it moves toward slightly cooler months, encouraging residents to relish the invigorating gusts while enjoying the vibrant fall scenery unfolding around them.
Weather in Guanzhou varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Guanzhou, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather. In September, temperatures soar with a minimum of 14°C (57°F) and an average high of 35°C (95°F), accompanied by significant rainfall of 187 mm (7.4 in) over 16 days, and a humidity level of 71%. In stark contrast, January experiences much colder conditions, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 17°C (63°F). Precipitation in January is considerably lower, at 72 mm (2.8 in) across 11 days, alongside a slight decrease in humidity at 67%. For a closer look at January's climate, visit Guanzhou weather in January.
September and February exhibit stark contrasts in weather patterns. In September, temperatures range from a minimum of 14°C (57°F) to a maximum of 35°C (95°F), allowing for warm and often hot conditions, with average temperatures around 23°C (73°F). Conversely, February experiences a chillier climate with temperatures dipping to a minimum of -3°C (27°F) and reaching a maximum of 25°C (77°F), resulting in an average of just 7°C (44°F). While both months see approximately 16 days of precipitation, September receives significantly more rainfall at 187 mm (7.4 in) compared to February’s 93 mm (3.7 in). Notably, humidity remains relatively high in both months, hovering around 71% in September and 73% in February. For more detailed insights on February weather, visit Guanzhou weather in February.
September and March present distinct weather characteristics. In September, the temperatures range from a minimum of 14°C (57°F) to a maximum of 35°C (95°F), averaging around 23°C (73°F). This month experiences significant rainfall, with 187 mm (7.4 in) falling over 16 days and a humidity level of 71%. In contrast, March shows much cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 29°C (85°F), averaging only 12°C (54°F). Although March has less total precipitation at 146 mm (5.7 in), it spreads over more days, totaling 20 days of rain, and features higher humidity at 84%. To explore more about March weather specifics, you can check Guanzhou weather in March.
In comparing the weather between September and April, September typically presents warmer conditions, with an average temperature of 23°C (73°F) and highs reaching up to 35°C (95°F). In contrast, April is cooler, with an average temperature of 16°C (61°F) and maximums of 31°C (88°F). Precipitation is relatively frequent in both months, with September seeing 187 mm (7.4 in) over 16 days and April experiencing 158 mm (6.2 in) over 18 days. Additionally, April tends to have higher humidity at 82%, compared to September's 71%. For more details, you can check Guanzhou weather in April.
September and May present distinct weather patterns in terms of temperature and precipitation. In September, temperatures range from a minimum of 14°C (57°F) to a maximum of 35°C (95°F), with an average temperature of 23°C (73°F). The month experiences significant rainfall, totaling 187 mm (7.4 in) over 16 days, and average humidity sits at 71%. In contrast, May tends to be cooler, with temperatures ranging from 9°C (48°F) to 34°C (93°F) and an average of 20°C (69°F). This month sees even higher precipitation, reaching 245 mm (9.6 in) over 19 days, along with increased humidity at 86%. For more detailed information, check out Guanzhou weather in May.
In comparing the weather between September and June, both months share a similar temperature range, with minimums around 14°C (57°F) and maximums close to 35°C (95°F) in September and 34°C (93°F) in June. However, June tends to be slightly warmer on average, with an average temperature of 24°C (75°F) compared to September’s 23°C (73°F). Precipitation is also notably higher in June, receiving 252 mm (9.9 in) over 19 days, while September sees 187 mm (7.4 in) over 16 days, making June the wetter month overall. Additionally, June has a higher humidity level at 86%, compared to 71% in September, resulting in a more oppressive feel during the summer month. For more detailed insights, check out Guanzhou weather in June.
September weather is generally milder compared to July, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 35°C (95°F), while July experiences warmer temperatures that range from a minimum of 19°C (66°F) to a maximum of 37°C (98°F). Additionally, September sees slightly less precipitation at 187 mm (7.4 in) over 16 days, compared to July's 203 mm (8.0 in) over 20 days. Humidity is also noticeably lower in September at 71%, whereas July is quite humid with levels reaching 88%. For a more detailed look at July's climate, you can visit Guanzhou weather in July.
September's weather exhibits a noticeable shift compared to August. While September experiences lower minimum temperatures, ranging from 14°C to a maximum of 35°C, August is warmer overall with its temperatures spanning from a minimum of 18°C to a maximum of 37°C. Additionally, September encounters more precipitation, totaling 187 mm over 16 days, compared to August's 158 mm within the same number of rainy days. Humidity also decreases in September to 71%, down from August's higher level of 85%. For a detailed look at August conditions, you can visit Guanzhou weather in August.
In comparing the weather between September and October, a noticeable shift occurs. September experiences warmer temperatures, with averages reaching up to 23°C (73°F) and maximums soaring to 35°C (95°F), while October sees a drop in average temperature to 17°C (62°F) and maximums of 33°C (91°F). Precipitation levels also shift, as September has a notably higher rainfall of 187 mm (7.4 in) over 16 days compared to October's more manageable 113 mm (4.5 in) across 14 days. Interestingly, humidity remains fairly consistent, with September at 71% and October slightly higher at 74%. For a detailed look at October's weather, check out Guanzhou weather in October.
September and November showcase a stark contrast in weather conditions. In September, temperatures range from a minimum of 14°C (57°F) to a maximum of 35°C (95°F), with an average of 23°C (73°F). This month also experiences significant rainfall, totaling 187 mm (7.4 in) over 16 days, while maintaining a humidity level of 71%. In contrast, November sees cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 27°C (81°F), averaging 12°C (54°F). Precipitation decreases to 95 mm (3.7 in) over 13 days, accompanied by higher humidity at 85%. Overall, November's weather is much cooler and wetter compared to the warm and humid conditions of September. For more details, you can check Guanzhou weather in November.
September and December showcase stark contrasts in weather conditions. In September, temperatures range from a comfortable minimum of 14°C (57°F) to a sizzling maximum of 35°C (95°F), with an average of 23°C (73°F). This month also experiences considerable rainfall, with 187 mm (7.4 in) falling over 16 days, and humidity levels sitting at 71%. Conversely, December brings a notable shift, with temperatures dipping to a min of -5°C (24°F) and an average of only 7°C (44°F), peaking at a maximum of 19°C (66°F). Precipitation decreases significantly to 59 mm (2.3 in) over 11 days, accompanied by a slightly higher humidity of 75%. For more details, you can refer to Guanzhou weather in December.
September in Guanzhou marks a transition from the oppressive summer heat to slightly more comfortable conditions. With temperatures averaging around 23°C and humidity lingering at 71%, the month presents a blend of warmth and moisture, making it distinct from the hotter months preceding it. While the rainfall increases, contributing to a total of 187 mm over 16 days, it serves to cool the air, offering a refreshing respite. This month stands out as rather dynamic, where the lush surroundings are revitalized by regular showers, enhancing the city's vibrant atmosphere. For a deeper understanding of the overall climate patterns, be sure to check out Guanzhou Climate.