Last updated: August 21, 2025
In Deqen, China, September ushers in a distinct blend of cool temperatures and frequent precipitation, creating a unique climatic experience. With maximum temperatures reaching around 16°C (61°F) and averaging 6°C (44°F), the month offers a refreshing respite from the summer heat. However, residents and visitors should be prepared for the chill, as minimum temperatures can plummet to -17°C (2°F). Rainfall is notably abundant, totaling 136 mm (5.3 in) over 27 days, resulting in a high humidity level of 90%. This combination of environmental factors not only shapes the landscape but also invites a sense of wonder in this picturesque region.
In September, Deqen, China, experiences a notable shift as summer gives way to autumn. With temperatures ranging from a chilly -17°C (2°F) to a mild 16°C (61°F), the month showcases a gradual decline in warmth compared to the peak summer months. The average temperature hovers around 6°C (44°F), indicating a crispness in the air that may prompt residents and visitors to don warmer attire. This transition is marked by decreasing nighttime temperatures, making it significantly colder than the preceding months of August and July. As the landscape begins to transform, September sets the stage for the impending winter chill that is soon to envelop Deqen, reflecting the region's dramatic climatic transformations throughout the year.
September in Deqen, China, marks a notable transition in precipitation patterns, with 136 mm of rainfall (approximately 5.3 inches) spread over 27 days. Following the peak wet months of July and August, which saw substantial downpours of 244 mm and 233 mm respectively, September maintains a robust yet slightly decreased precipitation level. This month continues the trend of extended rainy days, hinting at the lingering effects of the monsoon season. As the landscape begins to transform with the onset of autumn, the consistent rainfall keeps the region lush and vibrant, bridging the gap between the summer deluge and the drier months that follow in October and November.
In September, Deqen, China experiences a notable humidity level of 90%, maintaining the trend of high humidity set in the preceding months of July and August. This peak reflects a transition from the relatively lower conditions earlier in the year, where April recorded only 48% humidity. The months leading up to September show a gradual increase, suggesting a shift towards the wetter season as summer blends into autumn. Following September, a slight decrease to 81% in October hints at the change in weather patterns, marking the onset of a more stable, though still humid, climate as the year progresses towards winter.
In September, Deqen, China experiences a UV Index of 17, categorized as extreme, indicating a consistent trend of high UV levels that have dominated the summer months. This month’s burn time of just 10 minutes reflects a particularly aggressive sun exposure, similar to the preceding months of July and August, which also registered high indices of 17 and 16, respectively. As we transition from these summer extremes, the UV Index begins to taper off, but remains significant when compared to earlier months like January, where the UV Index was a more manageable 9. Staying vigilant about sun protection is crucial during this period; for more details on UV levels throughout the year, visit Deqen UV Index.
UV Risk Categories
In September, Deqen, China, basks in the afterglow of summer, experiencing 338 hours of sunshine. This month maintains a delightful brightness, slightly tapering from the peak of 368 hours in May and the bustling warmth of summer. As autumn approaches, the sunlight remains abundant, with hours gradually stabilizing. The transition into fall marks a gentle decline, as sunshine hours in October and November mirror a consistent trend, hovering around the mid-300s. Overall, September reflects a charming balance, where lingering summer rays still dominate, inviting residents and travelers alike to revel in the beautiful landscapes of Deqen.
In Deqen, China, September presents a mixed bag when it comes to sunny weather, boasting a 31% chance of sunshine. This marks a slight uptick from the dreary summer months of July and August, which plunge to a mere 14% and 4% respectively. Notably, September follows the trend of late spring and summer, when sunny days become increasingly rare, but it hints at a promising shift as the region heads towards the more favorable conditions of autumn, where the chances of sun rise to 67% in October. This transitional month serves as a bridge, suggesting a recovery of brighter days ahead, making it a compelling time for visitors seeking to experience the stunning landscapes of Deqen bathed in sunlight.
In Deqen, China, September marks a transitional period as daylight hours taper off from the peak of summer. With 12 hours of daylight, the month reflects a subtle shift from the longer days of June and July, which offered 14 hours and 13 hours respectively. This gradual decline continues into the fall, as the region prepares for shorter days ahead, with October bringing 11 hours and November dipping to 10 hours. The overall trend highlights a rhythm of nature as the days shorten, embracing shorter, cooler afternoons while hinting at the approach of winter.
In Deqen, China, the September wind brings a subtle shift in the air as summer gently gives way to autumn. With an average wind speed of 1.4 m/s (3 mph), September marks a slight uptick compared to the calming breezes of July and August, which lingered around 1.2 to 1.3 m/s. This modest increase signals the anticipation of the cooler months ahead, leading into a gradual rise through the fall, reaching 1.9 m/s (4 mph) in October and climbing further to 2.2 m/s (5 mph) by November and December. The overall trend reflects the transition from the stillness of summer to the invigorating breezes that characterize the approaching winter, making September a calm yet pivotal point in Deqen's meteorological journey.
Weather in Deqen varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Deqen, focusing on differences in temperature, rainfall, humidity, and UV levels.
September weather features a significant range in temperatures, with a minimum of -17°C (2°F) and an average of 6°C (44°F), peaking at a maximum of 16°C (61°F). The month is marked by high precipitation, totaling 136 mm (5.3 in) over 27 days, contributing to a humid atmosphere with humidity levels around 90%. In contrast, January experiences much colder conditions, with temperatures plummeting to a minimum of -34°C (-28°F) and averaging -11°C (12°F), while only reaching a maximum of 10°C (51°F). The month is significantly drier, receiving only 7 mm (0.3 in) of precipitation across just 2 days, and the humidity drops to 61%. For a more detailed perspective, you can check the Deqen weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a brisk minimum of -17°C (2°F) to a relatively mild maximum of 16°C (61°F), with an average of 6°C (44°F). This month experiences substantial rainfall, accumulating 136 mm (5.3 in) over 27 days, and the humidity remains high at 90%. Conversely, February is much colder, with temperatures plummeting to a minimum of -33°C (-28°F) and an average of -10°C (15°F), while the maximum only reaches 7°C (45°F). Precipitation drops significantly to just 13 mm (0.5 in) over only 4 days, accompanied by a lower humidity of 64%. For more detailed insights into February weather, you can visit Deqen weather in February.
In September, the weather is relatively mild, with average temperatures hovering around 6°C (44°F) and a maximum of 16°C (61°F). However, it can be quite wet, experiencing precipitation over 27 days, totaling 136 mm (5.3 in) and high humidity levels reaching 90%. In contrast, March presents a much colder climate with temperatures averaging -6°C (21°F), and minimums plummeting to -28°C (-18°F). The month sees significantly less precipitation, accumulating just 23 mm (0.9 in) over 7 days, and a lower humidity level of 55%. For more detailed insights, you can check Deqen weather in March.
In comparing the weather between September and April, it’s clear that September generally offers milder temperatures, with average highs of 16°C (61°F), compared to April's average maximum of just 13°C (55°F). However, April experiences colder minimum temperatures, plunging to around -24°C (-11°F), while September's lowest dips to -17°C (2°F). Additionally, September is significantly wetter, with 136 mm (5.3 in) of precipitation over 27 days, in contrast to April's 48 mm (1.9 in) across 14 days. Humidity also plays a role; September is quite humid at 90%, while April is much drier at 48%. For more specific insights on April weather, you can refer to Deqen weather in April.
In comparing the weather between September and May, it becomes clear that September is characterized by slightly warmer temperatures, with an average of 6°C (44°F) compared to May's average of 2°C (36°F). Both months experience a maximum temperature of 16°C (61°F), but September has a more significant chill, reaching a minimum of -17°C (2°F) compared to May's -14°C (8°F). Precipitation is higher in September, with 136 mm (5.3 in) falling over 27 days, while May sees less rainfall at 101 mm (4.0 in) over 22 days. Additionally, September is notably more humid, with an average of 90% humidity compared to May's 63%. For more detailed insights about the weather in May, you can visit Deqen weather in May.
September weather is generally cooler compared to June, with average temperatures ranging from a minimum of -17°C (2°F) to a maximum of 16°C (61°F), whereas June sees milder conditions, with temperatures fluctuating between -6°C (22°F) and 19°C (66°F). Despite June having higher overall precipitation at 160 mm (6.3 in) compared to September's 136 mm (5.3 in), both months experience rainfall on 27 days, though September is notably more humid at 90% compared to June's 79%. This shift from June’s relatively warmer and less humid climate to September’s chillier and damper conditions illustrates the transition into autumn. For more specific details on June weather, visit Deqen weather in June.
In comparing the weather of September and July, September tends to be cooler, with average temperatures ranging from a minimum of -17°C (2°F) to a maximum of 16°C (61°F), while July's temperatures are milder, with a minimum of 1°C (34°F) and a maximum of 17°C (62°F). Precipitation is heavier in July, totaling 244 mm (9.6 in) over 30 days, compared to September's 136 mm (5.3 in) over 27 days. Humidity levels remain high in both months, with July at 91% and September slightly lower at 90%. For more details on July weather in this region, visit Deqen weather in July.
In comparing the weather of September to that of August, we observe a notable drop in temperatures, with September reaching a minimum of -17°C (2°F) and an average of 6°C (44°F), compared to August's minimum of -2°C (28°F) and an average of 8°C (47°F). Both months experience a similar maximum temperature, peaking at 16°C (61°F) in September and 16°C (62°F) in August. However, September sees a decrease in precipitation, with 136 mm (5.3 in) recorded over 27 days, while August experiences significantly heavier rain at 233 mm (9.2 in) across 29 days. Interestingly, humidity levels remain constant in both months at 90%. For more detailed information, you can check Deqen weather in August.
In comparing the weather of September and October, September tends to be slightly warmer, with average temperatures ranging from a minimum of -17°C (2°F) to a maximum of 16°C (61°F), while October sees a drop in average temperature, with minima of -18°C (0°F) and maxima of 14°C (58°F). Precipitation also varies significantly; September experiences 136 mm (5.3 in) over 27 days, compared to October's 44 mm (1.7 in) over just 14 days. Additionally, the humidity in September is higher at 90%, while October’s humidity decreases to 81%. For more detailed insights, you can check Deqen weather in October.
September weather is generally milder, with temperatures ranging from a chilly -17°C (2°F) at night to a comfortable 16°C (61°F) during the day, and an average of 6°C (44°F). This month experiences significant precipitation, with about 136 mm (5.3 in) falling over 27 days, contributing to a high humidity level of 90%. In contrast, November ushers in markedly colder conditions, with nighttime temperatures plummeting to -29°C (-20°F) and an average temperature of -5°C (23°F). The maximum temperature reaches only 9°C (48°F) and the month sees a dramatic decrease in precipitation to just 12 mm (0.5 in), occurring over only 3 days, leading to a much lower humidity of 67%. For more detailed information, you can refer to Deqen weather in November.
In September, temperatures range from a chilly -17°C (2°F) at the minimum to a pleasant 16°C (61°F) at the maximum, resulting in an average temperature of 6°C (44°F). The month is characterized by significant precipitation, totaling 136 mm (5.3 in) over 27 days, coupled with high humidity levels at 90%. In stark contrast, December sees much colder temperatures, with minimums plunging to -33°C (-27°F) and a maximum reaching only 8°C (47°F), leading to an average of -9°C (17°F). Precipitation drops dramatically to just 10 mm (0.4 in) over a mere 1 day, and humidity decreases to 61%. This highlights the stark transition from the damp and relatively mild conditions of September to the harsh and dry cold of December. For more details, you can visit Deqen weather in December.
As September unfolds in Deqen, it brings a distinct chill to the air, with temperatures dipping noticeably compared to the warmer summer months. The average temperature settles around a brisk 6°C (44°F), while the nights can plunge to a frigid -17°C (2°F). Unlike the drier summer, September is marked by substantial precipitation, with rain gracing over half of the days in the month, contributing to a humid atmosphere that can reach 90%. This shift in weather patterns not only enhances the region's lush landscapes but also sets the stage for the stunning transformations of autumn. For a more detailed overview, explore our insights on Deqen Climate.