Last updated: August 21, 2025
In September, Dongchuan, China, experiences a unique blend of temperature variations and precipitation patterns. The maximum temperature reaches a comfortable 19°C (67°F), while the average hovers around a brisk 7°C (44°F), dropping to a chilly -4°C (25°F) at night. This month also sees a substantial precipitation total of 148 mm (5.8 in), spread over 21 days, contributing to the area's lush landscape. With a humidity level of 82%, the air remains moist, enhancing the enchanting atmosphere of Dongchuan during this transitional time of year.
In September, Dongchuan begins to emerge from the grip of summer, with temperatures showcasing a gentle transition toward autumn. The minimum temperature settles at a crisp -4°C (25°F), while the average rises to a modest 7°C (44°F), creating a refreshing yet cool atmosphere. Daytime highs reach a pleasant 19°C (67°F), inviting outdoor exploration amidst the changing foliage. As the month progresses, the progression towards colder months is evident, marking a shift from the warm summer months of July and August. This gradual cooling reflects the region's distinctive climate patterns, making September a captivating time to experience Dongchuan's natural beauty.
In September, Dongchuan, China, experiences a substantial precipitation total of 148 mm (5.8 in), which underscores a slight decrease from the peaks of the summer months but remains significant. This month typically sees 21 rainy days, maintaining the trend of frequent showers established in the preceding months. As autumn approaches, the rainfall begins tapering off from the high levels of August's 172 mm (6.8 in), while still providing ample moisture essential for the region’s agriculture. The consistent precipitation patterns from June through September highlight the region's vibrant wet season, transitioning into a drier October with only 66 mm (2.6 in) expected. Such variations in rainfall illustrate the dynamic climate of Dongchuan, preparing it for the changing seasons ahead.
In September, Dongchuan, China, experiences a notable rise in humidity, peaking at 82%, which mirrors the slightly higher levels observed in August. This trend marks the tail end of the summer season, where humidity levels generally fluctuate between 77% and 82% from June to September. Following this period of elevated moisture, the autumn months see a gradual increase, with October reaching its highest annual humidity of 85%. Overall, while the latter months of the year remain humid, September stands out as a transitional point, balancing the summer's heat with the approaching crispness of fall.
As summer transitions into autumn in Dongchuan, China, the UV Index in September remains notably high, reaching an extreme level of 11. This indicates that sun exposure requires caution, with a burn time of just 10 minutes for unprotected skin. Following a pattern established through the warmer months, where the UV Index peaked at 15 in June, September's values signify a slight decrease but still demand vigilance against harmful rays. This trend highlights the need for protective measures year-round, as the region consistently experiences elevated UV levels. To learn more about maintaining sun safety, check out Dongchuan UV Index.
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As summer transitions to autumn, September in Dongchuan, China embraces a warm farewell with 288 hours of sunshine. Though sun-soaked days taper off from the peak of July, which boasts an impressive 354 hours, September still holds its own among a year characterized by abundant light. The gradual decrease in daylight hours from the vibrant heights of May and June highlights the seasonal shift, yet September remains brighter than the earlier months of the year, such as January and November. With the sun casting its golden glow for most of the month, it's a perfect time to soak in the beauty of Dongchuan's landscapes before the cooler days of October begin to set in.
In September, Dongchuan, China, experiences a consistent yet modest likelihood of sunny weather, with a sunshine probability of 39%. This marks a slight uptick compared to the summer months, where June hits a low of 25% and July offers a more inviting 44%. As the region transitions from the heat of summer to the cooler embrace of fall, the chances of sunny days in September are reminiscent of the spring months, although still overshadowed by the promising 75% and 64% in November and January, respectively. While September may not boast the highest likelihood of sun, it certainly serves as a bridge between vibrant summers and crisp autumns, inviting residents and visitors alike to enjoy the lingering warmth.
As summer transitions to autumn in Dongchuan, September offers a gentle moderation in daylight, with approximately 12 hours of sun per day. This shift marks a gradual decline from the lush, long days of summer, where sunlight lingered for 14 hours from June through August. In September, the daylight begins to diminish, paving the way for the shorter days of fall. Following this month, daylight hours will continue to decrease, reaching a low of 9 hours in December. This rhythmic pattern not only reflects the changing seasons but also sets the stage for the vibrant hues of autumn and the cozy embrace of winter.
In Dongchuan, China, September brings a gentle caress of wind, with an average speed of 1.5 m/s (3 mph), mirroring the stillness felt in the preceding summer months. This slight decrease from the spring's more invigorating breezes reflects a cohesive trend of diminishing wind speeds as autumn approaches. Throughout the year, the winds fluctuate just enough to create a soothing backdrop, with the most vibrant breezes occurring in April at 1.9 m/s (4 mph). As summer transitions to fall, the winds soften, adding to the region’s serene atmosphere—a perfect setting to appreciate the landscape's beauty and tranquility.
Weather in Dongchuan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Dongchuan, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather conditions. In September, temperatures range from a chilly -4°C (25°F) at night to a pleasant 19°C (67°F) during the day, with an average of 7°C (44°F). The month experiences considerable precipitation, totaling 148 mm (5.8 in) over 21 days, contributing to a high humidity level of 82%. In contrast, January is characterized by much harsher conditions, with temperatures plummeting to a minimum of -35°C (-31°F) and an average of -14°C (6°F), reaching a maximum of only 2°C (35°F). Precipitation is minimal in January, with just 9 mm (0.4 in) over 3 days, and humidity is lower at 74%. For more detailed insights, check out Dongchuan weather in January.
September and February showcase starkly contrasting weather conditions. In September, temperatures range from a chilly -4°C (25°F) at night to a pleasant max of 19°C (67°F) during the day, with an average temperature of 7°C (44°F). This month also sees significant precipitation, totaling 148 mm (5.8 in) over 21 days, accompanied by high humidity at 82%. In contrast, February is significantly colder, with nighttime lows plummeting to -38°C (-35°F) and daytime highs peaking at 8°C (47°F), averaging around -12°C (11°F). Precipitation is minimal in February, amounting to only 13 mm (0.5 in) over just 4 days, and humidity remains slightly lower at 80%. For more detailed information on February weather, you can check Dongchuan weather in February.
When comparing the weather in September and March, a stark contrast becomes evident. September tends to be milder, with average temperatures around 7°C (44°F) and highs reaching up to 19°C (67°F), while March grapples with more frigid conditions, where average temperatures plummet to -6°C (21°F) and can drop as low as -28°C (-19°F). Precipitation is significantly higher in September, totaling 148 mm (5.8 in) over 21 days, in contrast to March's mere 29 mm (1.1 in) over just 8 days. Despite similar humidity levels of 81% to 82%, the notable temperature differences and precipitation patterns highlight the unique characteristics of each month. For a detailed look at March's weather, you can visit Dongchuan weather in March.
September and April exhibit markedly different weather patterns. In September, temperatures range from a minimum of -4°C (25°F) to a maximum of 19°C (67°F), with an average of 7°C (44°F). The month sees considerable precipitation, totaling 148 mm (5.8 in) over approximately 21 days, and a relatively high humidity of 82%. In contrast, April experiences colder conditions, with minimum temperatures plunging to -24°C (-11°F) and an average of -1°C (30°F). However, it also has a maximum temperature reaching 17°C (63°F). The precipitation in April is significantly lower at 63 mm (2.5 in) over 13 days, and humidity hovers around 78%. For a more detailed look at April's weather, see Dongchuan weather in April.
When comparing the weather in September and May, there are notable differences in temperature and precipitation. September experiences a milder average temperature of 7°C (44°F), with maximums reaching 19°C (67°F), while May has a cooler average of 4°C (40°F) but can peak at 21°C (69°F). Precipitation levels are higher in September, totaling 148 mm (5.8 in) over 21 days, compared to May’s 89 mm (3.5 in) over 14 days. Additionally, September brings higher humidity levels at 82%, in contrast to May's 71%. For those interested in more details, check out Dongchuan weather in May.
Comparing the weather in September and June reveals some notable differences. In September, temperatures range from a minimum of -4°C (25°F) to a maximum of 19°C (67°F), with an average of 7°C (44°F). This month experiences higher rainfall, with 148 mm (5.8 in) over 21 days and a humidity level of 82%. In contrast, June has slightly milder temperatures, ranging from -4°C (26°F) to a maximum of 18°C (65°F) and an average temperature of 8°C (47°F). Precipitation is also less in June, with 133 mm (5.2 in) falling over the same number of days but with lower humidity at 77%. For more insights, you can check Dongchuan weather in June.
In September, temperatures tend to be cooler compared to July, with minimums dropping to -4°C (25°F) and maximums peaking at 19°C (67°F), while July's temperatures range from a minimum of 1°C (34°F) to a maximum of 22°C (71°F). Both months experience similar levels of precipitation, with September receiving 148 mm (5.8 in) over 21 days and July slightly higher at 149 mm (5.9 in) over 20 days. Humidity levels are also higher in September at 82%, compared to 77% in July, contributing to a more damp and chilly feeling as summer transitions into autumn. For more details on July's weather, visit Dongchuan weather in July.
In comparing the weather of September and August, September tends to be slightly cooler with an average temperature of 7°C (44°F), compared to August's warmer average of 10°C (51°F). Additionally, September experiences a wider temperature range with a minimum of -4°C (25°F) and a maximum of 19°C (67°F), while August has a minimum of -1°C (30°F) and a maximum of 20°C (69°F). Precipitation levels are also noteworthy, with September receiving 148 mm (5.8 in) over 21 days and August having higher rainfall of 172 mm (6.8 in) spread across 24 days. Both months share the same humidity level of 82%. For a more detailed look at August weather patterns, visit Dongchuan weather in August.
September experiences milder temperatures, with averages around 7°C (44°F) and a maximum of 19°C (67°F), making it a more pleasant month compared to October. Precipitation is higher in September, with 148 mm (5.8 in) falling over 21 days, and humidity levels sit at 82%. In contrast, October sees significantly colder temperatures, with average highs dropping to -1°C (31°F) and lows plummeting to -23°C (-9°F). The month also experiences less rainfall, totaling 66 mm (2.6 in) over 13 days, although humidity slightly increases to 85%. For more detailed insights about October's weather, you can visit Dongchuan weather in October.
September and November present stark contrasts in weather conditions. In September, temperatures range from a minimum of -4°C (25°F) to a maximum of 19°C (67°F), with an average of 7°C (44°F). The month sees significant precipitation, totaling 148 mm (5.8 in) over 21 days, contributing to higher humidity levels at 82%.
In contrast, November plunges to much colder temperatures, with lows reaching -31°C (-24°F) and a maximum of only 9°C (49°F), averaging -8°C (17°F). Precipitation decreases dramatically to just 18 mm (0.7 in) over 5 days, and humidity remains slightly lower at 79%. For more details about November weather, visit Dongchuan weather in November.
In September, the weather features a much milder temperature range with minimums around -4°C (25°F) and maximums reaching up to 19°C (67°F), while the average hovers at 7°C (44°F). The month experiences significant precipitation, totaling 148 mm (5.8 in) over 21 days, contributing to a high humidity level of 82%. Conversely, December brings much colder conditions, with temperatures plummeting to a minimum of -35°C (-30°F) and an average of -14°C (6°F), peaking at just 3°C (38°F). This month sees vastly reduced precipitation, totaling only 9 mm (0.4 in) over 3 days, and lower humidity at 71%. For a closer look at December's weather conditions, check Dongchuan weather in December.
As September arrives in Dongchuan, it brings a noticeable shift in weather compared to the warmer summer months. The temperatures start to cool significantly, with chilly nights dipping close to freezing, while persistent humidity keeps the air feeling damp. Frequent rainfall occurs throughout the month, contributing to the lush landscape but also making it one of the wetter periods of the year. This transition marks the beginning of autumn, infusing the surroundings with rich colors and a refreshing crispness that enhances the region’s beauty. To learn more about the overall climate in Dongchuan, visit Dongchuan Climate.