Last updated: August 21, 2025
September in Guangzhou, China showcases a blend of summer's warmth and the initial whispers of autumn. With maximum temperatures soaring up to 36°C (97°F) and an average of 29°C (84°F), residents and visitors alike can expect a warm climate, perfect for exploring the city. However, the weather brings challenges, as 199 mm (7.8 in) of rain falls over 21 days of the month, contributing to a high humidity level of 75%. Those looking to enjoy the vibrant urban scene should prepare for occasional showers while indulging in the warmth of this bustling metropolis.
In September, Guangzhou experiences a warm transition as summer begins to wane. With minimum temperatures around 21°C (70°F) and averaging a comfortable 29°C (84°F), the city remains pleasantly warm, inviting residents and visitors alike to explore its bustling streets. While peak temperatures can reach up to 36°C (97°F), a slight decrease from the summer’s extremes provides a hint of relief. This month marks a significant shift from the peak summer heat, making September an ideal time to enjoy outdoor activities before autumn sets in, all while basking in the vibrant cultural tapestry that Guangzhou offers.
In September, Guangzhou experiences a notable shift in precipitation patterns, receiving 199 mm (7.8 in) of rain over 21 days. This marks a decrease from the intense summer months of July and August, which averaged over 200 mm (7.9 in) per month. Notably, September's rainfall still maintains a significant level, as it transitions from the peak monsoon season. This trend indicates a gradual tapering of heavy rains while remaining robust enough to contribute to the region's lush landscapes. As the city moves into October, precipitation levels are expected to further drop, emphasizing the dynamic nature of Guangzhou's climate as it begins to cool.
September in Guangzhou, China, marks a notable shift in humidity patterns as the summer months taper off. With an average humidity of 75%, the city experiences a decline from the 88% peaks seen in July and August. This decrease signals a gradual transition into the milder autumn months ahead. Compared to earlier in the year, September's humidity is a bit lower than the highs of May and March, yet remains relatively high, maintaining a consistently humid atmosphere that characterizes the region. As the year progresses, humidity levels are set to drop further, hinting at the drier conditions that come with October's arrival.
September in Guangzhou, China, sees a UV Index of 11, categorized as extreme, indicating that sun exposure can become hazardous in a mere 10 minutes. This marks a slight decrease from the blistering UV levels of 12 in August, yet it remains part of a trend of high UV index readings experienced throughout the summer months. The intensity of UV radiation has been consistently high from March through September, peaking at 13 in both May and July. As we transition into October, the UV Index will drop to 10, but it's important to stay vigilant, as exposure can still be damaging. For those planning to enjoy the outdoors, proper sun safety measures are essential during this time. For more detailed information, check out Guangzhou UV Index.
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September in Guangzhou bathes the city in 272 hours of glorious sunshine, continuing a trend of vibrant light that peaks in the summer months. Following a bustling July with 301 hours, the sunlight begins to mellow, yet September still holds its own, closely trailing behind August’s 274 hours. This gradual decline hints at the approach of autumn, where the richness of summer lingers, allowing residents and visitors alike to enjoy the warm glow before the cooler months settle in. The sunshine hours in September reflect a consistent pattern, with over 270 hours of sunlight—a wonderful backdrop for the city’s vibrant culture and bustling activities. As we transition into October with 268 hours, it’s clear that Guangzhou’s sun-kissed days offer a beautiful farewell to summer.
In Guangzhou, China, September offers a 43% chance of sunny weather, making it a relatively bright month compared to the gloomy summer. This trend marks a notable increase from the dismal sunshine percentages seen in the preceding summer months of July and August, where the chances plummet to 31% and 15%, respectively. Interestingly, as the year progresses, October begins to cool off, dropping to 34%, but September stands out as a transition time, leading back into the more consistently sunny months of late autumn. With an uptick in sunlight, September presents an enticing opportunity for outdoor activities and exploration in the vibrant city.
As summer transitions into autumn, September in Guangzhou brings a delightful balance of 12 hours of daylight, akin to both March and April. This month marks a noticeable shift from the extended summer days of June to August, which enjoyed 13 hours of sunlight. The gradual decrease in daylight hours begins now, as the city prepares for the cooler months ahead. Overall, September's stable daylight provides an ideal backdrop for leisurely pursuits, blending the warmth of summer with the anticipation of fall's beauty.
As September unfolds in Guangzhou, a noticeable easing in the winds greets residents, with the average wind speed dropping to 1.6 m/s (4 mph)—the calmest point of the year. This gentle breeze marks a transition from the warmer, breezier summer months, where winds hovered around 2.0 m/s (5 mph) in August, to the more invigorating gusts anticipated in October, which rise to 3.7 m/s (8 mph). The trend clearly highlights September as a bridge between seasons, where the tranquil winds offer a subtle yet refreshing change, inviting locals and visitors alike to bask in the mild, pleasant atmosphere before autumn's arrival.
Weather in Guangzhou varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Guangzhou, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present strikingly different weather patterns. In September, temperatures range from a warm minimum of 21°C (70°F) to a scorching maximum of 36°C (97°F), with an average of 29°C (84°F). The month also experiences significant rainfall, totaling 199 mm (7.8 in) across 21 days, accompanied by high humidity at 75%. In contrast, January offers much cooler conditions, with temperatures dipping to a minimum of 4°C (39°F) and peaking at 28°C (83°F), averaging 16°C (61°F). Rainfall in January is minimal, only 26 mm (1.0 in) over three days, and humidity is notably lower at 64%. For more detailed information, you can visit Guangzhou weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a minimum of 21°C (70°F) to a maximum of 36°C (97°F), with an average of 29°C (84°F), making it notably hotter. Additionally, the month sees about 199 mm (7.8 in) of precipitation over 21 days, coupled with high humidity levels at 75%. In contrast, February offers a much cooler environment, with temperatures varying from a low of 5°C (41°F) to a high of 30°C (86°F) and an average of 17°C (62°F). Furthermore, February experiences significantly less rainfall, with only 62 mm (2.4 in) over 8 days and lower humidity at 68%. For more detailed information, you can refer to Guangzhou weather in February.
When comparing the weather in September and March, a striking contrast emerges. September is characterized by significantly higher temperatures, with minimums around 21°C (70°F) and maximums reaching 36°C (97°F), providing an average of 29°C (84°F). Additionally, September experiences considerable rainfall, accumulating 199 mm (7.8 in) over 21 days, paired with humidity levels at 75%. In contrast, March presents a much cooler climate, with minimum temperatures dropping to 9°C (49°F), averages around 21°C (70°F), and maximums of 32°C (90°F). Rainfall is also less intense in March, totaling 110 mm (4.3 in) over 14 days, and the humidity is slightly lower at 73%. For more detailed information about the weather during this month, you can refer to Guangzhou weather in March.
When comparing the weather in September and April, there are notable differences in temperature and precipitation. September experiences much higher average temperatures, ranging from a minimum of 21°C (70°F) to a sweltering maximum of 36°C (97°F), contrasted with April's cooler range of 12°C (54°F) to a maximum of 34°C (93°F). Additionally, September is characterized by heightened humidity levels at 75% and significantly more rainfall, with 199 mm (7.8 in) over 21 days, compared to April's 148 mm (5.8 in) spread over only 14 days. For more insights on the weather conditions specific to April, you can visit Guangzhou weather in April.
Comparing the weather in September and May reveals some interesting similarities and differences. In September, the average temperature is slightly warmer at 29°C (84°F), compared to May's average of 27°C (81°F). Additionally, September experiences higher minimum temperatures, with a low of 21°C (70°F), while May starts cooler at 15°C (60°F). Both months see a maximum temperature of 36°C (97°F). In terms of precipitation, May has a bit more rainfall, with 222 mm (8.7 in) over 20 days, compared to September's 199 mm (7.8 in) spread over 21 days. Humidity levels are also comparable, with September at 75% and May slightly higher at 79%. For those interested in more details about May's weather, you can refer to Guangzhou weather in May.
In comparison to June, September generally experiences slightly milder temperatures, with average readings of 29°C (84°F) compared to June's 29°C (85°F) but with minimum temperatures that are not as low. Both months have a maximum temperature reaching around 36°C (97°F to 98°F), but September sees less precipitation, totaling 199 mm (7.8 in) over 21 days, while June receives a significantly higher 361 mm (14.2 in) over 23 days. Humidity levels are also somewhat comparable, with September at 75% and June at 77%. For more detailed insights into June's weather patterns, you can check Guangzhou weather in June.
In comparing the weather patterns of September and July, September experiences slightly lower temperatures overall, with a minimum of 21°C (70°F) and an average of 29°C (84°F), whereas July starts at a higher minimum of 25°C (77°F) and maintains an average of 30°C (86°F). However, July's maximum temperatures can soar to 38°C (100°F), compared to September's peak of 36°C (97°F). Both months witness considerable rainfall, with September receiving 199 mm (7.8 in) over 21 days and July close behind at 188 mm (7.4 in) across 22 days. Additionally, humidity levels in July are elevated at 88%, compared to September's more comfortable 75%. For those interested in more detailed information, you can refer to Guangzhou weather in July.
In comparison to August, September in Guangzhou experiences slightly cooler temperatures, with an average of 29°C (84°F) compared to August's 29°C (85°F). However, September's maximum temperature peaks at 36°C (97°F), which is notably lower than August's high of 38°C (101°F). Precipitation also decreases in September, with 199 mm (7.8 in) over 21 days, while August sees a higher amount of rainfall at 292 mm (11.5 in) over 24 days. Furthermore, humidity levels are slightly lower in September at 75%, compared to August's 88%. For more details, check Guangzhou weather in August.
September and October present notable differences in weather patterns. In September, temperatures can soar with a minimum of 21°C (70°F) and an average high of 36°C (97°F), making it the warmer month. Precipitation is significantly higher, totaling 199 mm (7.8 in) over 21 days, coupled with a humidity level of 75%. In contrast, October offers a cooler and drier climate, with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 35°C (95°F), and an average temperature of 25°C (78°F). Rainfall drops to 97 mm (3.8 in) over just 9 days, and humidity decreases to 65%. For more detailed information, you can check Guangzhou weather in October.
September weather is characterized by warm temperatures, with a minimum of 21°C (70°F), an average of 29°C (84°F), and a maximum reaching up to 36°C (97°F). The month experiences significant rainfall, with 199 mm (7.8 in) over 21 days and a high humidity level of 75%. In contrast, November brings a cooler climate with a minimum temperature of 12°C (53°F), an average of 22°C (71°F), and a maximum of 31°C (88°F). Rainfall dramatically decreases to just 21 mm (0.8 in) across 5 days, and humidity levels drop to 64%. For more detailed information, you can check Guangzhou weather in November.
September and December showcase a striking contrast in weather patterns. In September, temperatures range from a minimum of 21°C (70°F) to a maximum of 36°C (97°F), with an average of 29°C (84°F), creating a hot and humid atmosphere with high humidity at 75%. The month is also characterized by substantial rainfall, totaling 199 mm (7.8 in) over 21 days. In contrast, December brings much cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 29°C (85°F), averaging 17°C (63°F). The precipitation diminishes significantly to just 19 mm (0.7 in) over 3 days, and humidity slightly decreases to 69%. For more detailed information, check out Guangzhou weather in December.
As September unfolds in Guangzhou, the city experiences a transition towards the cooler autumn months, yet the warmth lingers with average temperatures hovering around 29°C. Unlike the hotter summer months, the arrival of September sees a notable increase in precipitation, with rain falling on over half the days of the month. This heightened humidity, averaging around 75%, can make the air feel quite muggy, creating a unique blend of warmth and dampness. The significant rainfall not only cools the environment but also brings a refreshing change, distinguishing September's weather from the dry heat of previous months. For a deeper dive into the seasonal variations in this vibrant city, explore the detailed insights at Guangzhou Climate.