Last updated: August 21, 2025
In September, Sichuan, China experiences a transitional climate characterized by a maximum temperature reaching 29°C (85°F) and a comfortable average of 18°C (65°F). With a minimum temperature of 10°C (50°F), the weather invites a blend of warmth and coolness. Rainfall is significant, with a total precipitation of 150 mm (5.9 in) distributed across approximately 15 days, contributing to the region's lush greenery. The humidity levels hover around a notable 89%, enhancing the perception of moisture in the air. This climatic profile makes September an intriguing month for visitors and locals alike, as they navigate the vibrant and often wet landscapes of Sichuan.
In Sichuan, China, September marks the beginning of a transition to cooler weather, as temperatures gradually retreat from the summer heat. With minimums around 10°C (50°F) and daytime averages reaching 18°C (65°F), this month offers a comfortable climate for outdoor activities. As the month's peak temperatures hover around 29°C (85°F), visitors can still enjoy the lingering warmth of summer, making it an ideal time for exploration before autumn fully sets in. This shift marks a notable contrast from the sweltering highs experienced in July and August, showcasing Sichuan's ability to beautifully blend seasonal changes while maintaining a mild and inviting atmosphere for both locals and travelers alike.
In September, Sichuan, China experiences a notable peak in precipitation, aligning with the heavy rains typical of late summer and early fall. With 150 mm (5.9 in) of rainfall recorded, this month mirrors August's precipitation, contributing to a lush landscape. Interestingly, September also sees 15 rainy days, the same as in July, indicating that the region is well within its monsoon season. As the wet season transitions into autumn, the rainfall begins to taper down in October, when precipitation drops to 129 mm (5.1 in), marking the start of more variable weather patterns. This trend highlights the significance of September as a transitional month, rich in moisture and vital for sustaining the region's agricultural landscape.
As September arrives in Sichuan, China, the humidity hovers around 89%, reflecting a slight increase after the warmer summer months. Following a gradual ascent throughout the summer—where humidity peaked at 88% in August—September's levels remain relatively high, just shy of 90% in October. This trend of elevated humidity persists through the fall, suggesting a transition period where moist air is prevalent before cooler, drier conditions set in for the winter months. Balancing warmth and moisture, September offers a lush atmosphere, ideal for the region's rich biodiversity and agriculture.
In September, Suchuan, China, experiences a very high UV Index of 10, indicating that sun exposure can lead to a burn in just 15 minutes. As summer fades, the UV intensity slightly decreases from the extreme levels seen in the peak months of June through August, yet it remains significant. This trend reflects a gradual decline from the peak burn times, yet vigilance is still crucial. With the UV Index hovering around 10, outdoor activities should be approached with care, prioritizing sun protection measures. For more information on how to stay safe under the sun, visit the Suchuan UV Index.
UV Risk Categories
In September, Sichuan experiences a notable shift in daylight, basking in 213 hours of sunshine. While this marks a decrease from the sun-drenched heights of July and August, where residents enjoyed an impressive 325 and 313 hours, respectively, it still remains vibrant compared to the chillier months ahead. This transition shines light on the gradual decline from the summer’s peak, yet reflects the region's charm as the foliage begins to hint at autumn’s arrival. Interestingly, September's sun hours surpass those of October's 166 hours, highlighting the tail-end of sunny warmth in contrast to the impending coolness of fall.
In September, the likelihood of sunny weather in Sichuan, China, stands at 28%, marking a slight increase from the summer months, but still lower than many other times of the year. While July boasts a robust 45% chance of sunshine, the subsequent months see a gradual decrease in sunny days, with September providing a moderate respite before the cooler, cloudier months of October, which dips to just 10%. This trend highlights a transitional period; as summer wanes, September offers occasional bursts of sunshine, perfect for those looking to enjoy the lingering warmth of summer while being mindful of the approaching autumn chill.
In September, daylight in Suchuan, China, gently begins its descent from the summer peak, offering about 12 hours of sunlight. This marks a transition from the long, sun-drenched days of July and August, where the region basked in 14 hours of daylight. Following the vibrant blooms of summer, September brings a subtle shift, as days shorten in anticipation of the cooler months ahead. As the seasons change, the daylight duration will continue to decrease, leading into October with 11 hours and culminating in a more confined 10 hours by November. This gradual ebb of sunlight foreshadows the coziness of autumn, creating a rhythmic cycle of nature that residents have come to embrace.
In September, the wind in Suchuan, China, gently whispers at an average speed of 1.6 m/s (4 mph), maintaining a tranquil atmosphere reminiscent of the summer's calm. This is a subtle decline from the previous months, where the breeze was slightly stronger, reflecting a transition into the cooler seasons. Observing the trends throughout the year, wind speeds in Suchuan show a tendency to remain relatively consistent, with only slight variations. May stands out with a peak at 2.0 m/s (5 mph), hinting at the arrival of warmer days, while August and December feature the lowest speeds, suggesting a seasonal lull. Overall, September’s gentle winds provide a serene backdrop as nature begins its gradual shift towards autumn.
Weather in Suchuan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Suchuan, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather patterns. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 29°C (85°F), along with significant rainfall of 150 mm (5.9 in) over approximately 15 days, resulting in high humidity levels of 89%. Conversely, January experiences much colder conditions, with temperatures dipping to a minimum of -11°C (13°F) and averaging just 1°C (35°F) during the day. This winter month sees minimal precipitation of only 17 mm (0.7 in) spread over about 6 days, and humidity drops slightly to 85%. For more details, you can visit Suchuan weather in January.
September and February present stark contrasts in weather. In September, temperatures range from a cool 10°C (50°F) at night to a warm 29°C (85°F) during the day, with an average of 18°C (65°F). The month experiences significant rainfall, totaling 150 mm (5.9 in) over about 15 days, accompanied by high humidity at 89%. In contrast, February is much colder, with temperatures dipping to a minimum of -6°C (21°F) and averaging only 4°C (39°F), peaking at 19°C (67°F). This month sees much less precipitation, with just 26 mm (1.0 in) over 6 days and a slightly lower humidity level of 87%. For more details on February weather, you can visit Suchuan weather in February.
September and March present contrasting weather patterns. September enjoys a mild average temperature of 18°C (65°F), with maximums reaching up to 29°C (85°F) and a relatively high humidity of 89%. However, it also experiences significant rainfall, accumulating 150 mm (5.9 in) over approximately 15 days. In contrast, March has a cooler average temperature of 9°C (49°F), with lows dipping to -2°C (29°F) and highs reaching 23°C (74°F). This month is marked by much lower precipitation, totaling only 43 mm (1.7 in) over about 11 days, and a similarly high humidity level of 90%. For more specific details on March conditions, you can refer to Suchuan weather in March.
In comparing the weather between September and April, notable differences emerge. September boasts a milder average temperature of 18°C (65°F) with a maximum that can reach up to 29°C (85°F), while April's average is cooler at 14°C (57°F), peaking at 28°C (83°F). Rainfall is considerably higher in September at 150 mm (5.9 in) over 15 days, contrasting with April's 63 mm (2.5 in) spread across 12 days. Humidity levels remain relatively similar, with September at 89% and April at 85%. For a detailed look at April weather, you can check out Suchuan weather in April.
September and May exhibit contrasting weather patterns despite having similar average temperatures. In September, temperatures range from a cooler minimum of 10°C (50°F) to a warmer maximum of 29°C (85°F), accompanied by higher humidity levels at 89% and more frequent precipitation, totaling 150 mm over 15 days. In contrast, May boasts a lower minimum temperature of 5°C (42°F) and a slightly higher maximum of 31°C (88°F), but with much less precipitation of 78 mm over only 10 days and a lower humidity of 81%. These differences highlight September's wetter and more humid climate compared to the comparatively drier and milder weather in May. For more details, you can explore Suchuan weather in May.
September and June present distinct weather patterns. September boasts a temperature range from a cool 10°C (50°F) to a warm 29°C (85°F), while June typically stays slightly warmer, with temperatures ranging from 11°C (53°F) to a high of 33°C (91°F). Humidity levels are quite similar, with September at 89% and June at 86%. In terms of precipitation, September experiences more rainfall, averaging 150 mm (5.9 in) over about 15 days, compared to June's 117 mm (4.6 in) spread over 11 days. For a deeper dive into June weather in Suchuan, you can check out Suchuan weather in June.
In comparing the weather between September and July, we observe some notable differences. September has a cooler temperature range, with minimums dropping to 10°C (50°F) and averages around 18°C (65°F), while July is significantly warmer, with minimums of 14°C (57°F) and average highs of 24°C (75°F). Both months experience similar levels of precipitation at around 150 mm (5.9 in) in September and 148 mm (5.8 in) in July, each having about 15 days of rainfall. However, September shows slightly higher humidity levels at 89%, compared to July’s 87%. For a closer look at July weather specifics, you can visit this link: Suchuan weather in July.
In comparing the weather between August and September, we see notable differences in temperature and daily conditions. August typically experiences warmer temperatures, with minimums around 13°C (55°F) and maximums climbing to 35°C (95°F), creating an average of 23°C (74°F). In contrast, September cools down, with minimums dropping to 10°C (50°F) and maximums reaching 29°C (85°F), resulting in a more temperate average of 18°C (65°F). Interestingly, both months receive the same amount of precipitation at 150 mm (5.9 in), but September has slightly more rainy days, with 15 compared to August's 12. Humidity levels remain similar, at 89% in September and 88% in August. For more detailed insights on August weather specifically, you can check Suchuan weather in August.
In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 29°C (85°F), with an average of 18°C (65°F), while October sees cooler temperatures, with a minimum of 4°C (39°F), an average of 12°C (54°F), and a maximum of 25°C (78°F). Precipitation is slightly lower in October at 129 mm (5.1 in) compared to September's 150 mm (5.9 in), though October experiences a slightly longer stretch of rainy days, totaling 17 days versus September's 15. Additionally, humidity remains high in both months, with September at 89% and October at 90%. Overall, October brings a noticeable drop in temperatures and consistent moist conditions. For more details, you can check Suchuan weather in October.
September weather is generally warmer and more humid compared to November, with temperatures ranging from a cool 10°C (50°F) at night to a warm 29°C (85°F) during the day. The month also sees significant rainfall, with 150 mm (5.9 in) of precipitation spread over 15 days, leading to a high humidity level of 89%. In contrast, November experiences a sharper drop in temperature, with nighttime lows dipping to -4°C (24°F) and daytime highs reaching up to 19°C (67°F). Rainfall is considerably less in November, totaling just 31 mm (1.2 in) over 9 days, and the humidity remains relatively high at 88%. For more specific insights into the weather during this time, you can explore Suchuan weather in November.
September weather is characterized by a warm and transitional climate, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 29°C (85°F) and an average of 18°C (65°F). The month sees significant precipitation, totaling 150 mm (5.9 in) over 15 days, and high humidity levels at 89%. In contrast, December brings much cooler conditions, as temperatures drop significantly to a minimum of -7°C (19°F) and a maximum of 12°C (54°F), with an average of just 2°C (35°F). Precipitation decreases sharply to 20 mm (0.8 in) over only 6 days, while humidity remains relatively stable at 88%. For more details on this colder month, you can visit Suchuan weather in December.
As September rolls into Suchuan, the weather presents a distinct shift compared to the summer months, featuring a refreshing blend of warm days and cooler nights. The average temperatures dip, creating a more comfortable atmosphere that encourages outdoor exploration. However, this month also brings significant rainfall, contributing to the area's lush landscapes—an essential characteristic of this transitional period. With humidity levels remaining high, visitors can expect a vibrant, yet slightly damp environment. For insights into what to expect throughout the year, check out Suchuan Climate.