Last updated: August 21, 2025
In Longquan, China, September welcomes the transition from summer warmth to the cooler embrace of autumn. With a maximum temperature reaching a sizzling 36°C (98°F) and an average of 23°C (74°F), the month delights in warm days but can dip to a refreshing 14°C (58°F) at night. However, this shift is accompanied by 89 mm (3.5 in) of rainfall over 9 days, contributing to an average humidity of 73%. The blend of warm days and cooler evenings, coupled with occasional rain, creates a unique climatic tapestry for those exploring this picturesque region in September.
In Longquan, China, September marks a transition into milder temperatures, providing a refreshing change from the intense summer heat. With a minimum temperature settling around 14°C (58°F) and an average of 23°C (74°F), the days are pleasantly warm but not overwhelming. The maximum temperature can reach up to 36°C (98°F), hinting that the late summer warmth lingers, but the evenings start to cool, inviting a cozy atmosphere. This gradual shift not only heralds the approach of autumn but also offers the perfect opportunity for outdoor activities amidst the colorful changing leaves, making September an inviting time to experience the beauty of Longquan.
In September, Longquan experiences a notable shift in its precipitation patterns, with an average of 89 mm (3.5 in) of rainfall spread over 9 days. This marks a decrease from the intense summer months of July and August, which collectively saw over 300 mm of rain, signaling a transition into the drier autumn season. Although September's rainfall is significantly lower than the summer peak, it still plays a crucial role in recharging local water sources and sustaining the lush landscape. As the year progresses towards October, expect a further reduction in both precipitation amounts and frequency, with just 57 mm (2.3 in) forecasted over 8 days. This trend highlights Longquan's gradual shift from the wet summer months to a milder, more moderate fall season.
As summer fades, September brings a noticeable shift in humidity levels in Longquan, China, with an average of 73%. This decline marks a welcome reprieve from the peak of July's sweltering 86% and August's 83% humidity. The gradual decrease is reflective of the transition from the hot, humid summer months to the more temperate autumn season. Interestingly, September's humidity is lower than both the early months of the year, like January's 68%, and the more humid late months, such as November's 83%. This creates a comfortable microclimate ideal for outdoor activities, making it a delightful time to explore the lush landscapes of Longquan before the onset of winter’s chill.
September in Longquan, China, marks a transitional phase in the UV Index, where the intensity remains notably high with a value of 9, classifying it as very high. This reflects a gradual decline from the extreme levels seen in July and August, which both reached 11. Individuals can expect a burn time of just 15 minutes, emphasizing the need for protective measures during outdoor activities. As autumn approaches, the levels remain significant but manageable, as October will see the UV Index drop to 8. This trend showcases the importance of staying informed about UV exposure throughout the year, particularly in a region where summer months demand heightened caution. For detailed insights, visit Longquan UV Index.
UV Risk Categories
In Longquan, China, September marks a transition as summer bids farewell, with the sun gracing the region with 241 hours of shining brilliance. This decrease in sunlight from the bustling months of July and August—where peak hours soared to 314 and 300, respectively—highlights a seasonal shift. Interestingly, the light hours in September still reflect a vibrant summer echo, outpacing the earlier months of the year, such as January with its mere 185 hours. As autumn approaches, the gradual decline in sunlight serves as a gentle reminder of the changing seasons, inviting locals and visitors alike to bask in the last warm rays before the cooler months set in.
In Longquan, China, September ushers in a notable uptick in sunny weather, with a 45% chance of clear skies. This marks a slight increase from the summer months, where the likelihood of sunshine hovers around 35-39%. While not the sunniest month on the calendar, September offers a welcome transition from the humid heat of summer and sets the stage for autumn's clear and crisp days. Interestingly, this month stands in sharp contrast to the preceding April and May, where sunshine chances dip to just 30-32%. Overall, September provides a delightful blend of warmth and brightness, making it an inviting time for outdoor activities before the rainier months approach.
In Longquan, China, the shift in daylight duration through the year creates a rhythmic dance of light and shadow. After the steady glow of 10 hours in January and February, there’s a gradual increase as spring approaches, culminating in a vibrant 14-hour peak during the summer months of June and July. As September arrives, daylight begins to wane, offering a gentle 12-hour embrace before transitioning into the shorter days of autumn. This trend showcases a seasonal cycle where both growth and retreat are reflected in the hours of sunlight, inviting residents to savor the lingering warmth before the 11-hour days of October give way to the crisp chill of winter.
As September arrives in Longquan, China, the average wind speed gently settles at 2.6 m/s (6 mph), slightly below the year’s peak in May. This month, much like the preceding ones, exhibits calm breezes that transition smoothly from the warmer summer months, where winds were at their lowest. Following an upward trend seen earlier in the year, particularly in November, winds generally hover around a comfortable speed of 2.8 m/s (6 mph) through the fall, providing a delightful backdrop for outdoor activities and a harmonious close to the warmer season. As the air grows crisper, September's gentle winds herald the approach of autumn, encouraging a serene shift in the landscape.
Weather in Longquan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Longquan, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present strikingly contrasting weather patterns. In September, temperatures range from a minimum of 14°C (58°F) to a scorching maximum of 36°C (98°F), with an average of 23°C (74°F). The month sees about 89 mm (3.5 in) of precipitation over nine days, accompanied by a humidity level of 73%. In contrast, January brings frigid conditions with temperatures plummeting to a minimum of -15°C (5°F) and an average of just 2°C (36°F), reaching a maximum of 17°C (64°F). It is much drier, with only 23 mm (0.9 in) of precipitation spread over three days and a humidity level of 68%. For a more detailed look at what to expect in January, check out this link: Longquan weather in January.
September and February showcase strikingly contrasting weather patterns. In September, temperatures range from a minimum of 14°C (58°F) to a scorching maximum of 36°C (98°F), with an average of 23°C (74°F). The month typically experiences 89 mm (3.5 in) of precipitation over 9 days, coupled with relatively high humidity at 73%. In stark contrast, February brings much colder conditions, with temperatures ranging from a chilly -7°C (20°F) to a mild maximum of 26°C (79°F), averaging around 6°C (42°F). Precipitation is significantly lower at 26 mm (1.0 in) over just 4 days, and the humidity hovers around 75%. For more detailed information about February weather, you can visit Longquan weather in February.
September typically features warmer temperatures, with averages around 23°C (74°F) and highs reaching up to 36°C (98°F). In contrast, March is much cooler, with average temperatures of 12°C (53°F) and maximums only reaching 28°C (83°F). Additionally, September experiences more rainfall, with 89 mm (3.5 in) spread over 9 days, while March has significantly less precipitation at 26 mm (1.0 in) over just 6 days. Humidity levels are fairly high in both months, but slightly more in March at 81%, compared to September's 73%. For a more detailed look at March weather specifically, you can visit Longquan weather in March.
When comparing the weather between September and April, notable differences emerge in temperature, precipitation, and humidity. September boasts warmer temperatures, with a minimum of 14°C (58°F) and an average of 23°C (74°F), peaking at a scorching 36°C (98°F). In contrast, April starts off much cooler, with a minimum temperature of 3°C (37°F) and an average of 17°C (63°F), reaching a maximum of 32°C (91°F).
Precipitation also varies significantly, with September receiving 89 mm (3.5 in) of rain over 9 days, while April has only 39 mm (1.5 in) over 6 days. Additionally, the relative humidity in April is slightly higher at 81%, compared to 73% in September. For more detailed information, you can visit Longquan weather in April.
September and May offer distinct weather experiences despite having similar average temperatures. In September, the temperatures range from a mild 14°C (58°F) to a hot 36°C (98°F), accompanied by 89 mm (3.5 in) of precipitation over about 9 days, and humidity levels around 73%. In contrast, May boasts slightly cooler minimum temperatures starting at 9°C (48°F) and peak highs reaching up to 38°C (101°F), yet it experiences less rainfall, with 54 mm (2.1 in) over only 6 days and a higher humidity of 78%. For a more detailed insight into May's weather, you can check out Longquan weather in May.
When comparing the weather in September and June, a few notable differences emerge. September has a milder temperature range with a minimum of 14°C (58°F) and an average of 23°C (74°F), whereas June tends to be warmer, with a minimum of 15°C (59°F) and an average of 27°C (81°F). Additionally, June experiences higher maximum temperatures, reaching up to 38°C (102°F) compared to September's maximum of 36°C (98°F). Precipitation is also more substantial in June, totaling 145 mm (5.7 in) over 9 days, contrasted with September's 89 mm (3.5 in) over the same number of days. Humidity levels are slightly higher in June at 79% compared to 73% in September, making June feel more humid overall. For a detailed look at June's weather specifics, check out Longquan weather in June.
When comparing the weather in September and July, several notable differences emerge. September enjoys a milder temperature range, with minimums of 14°C (58°F) and maximums reaching 36°C (98°F), while the average temperature settles around 23°C (74°F). In contrast, July is notably warmer, with minimum temperatures at 20°C (68°F), averages of 28°C (83°F), and highs peaking at 39°C (103°F). Additionally, July experiences nearly double the precipitation of September, totaling 196 mm (7.7 in) over 12 days compared to September's 89 mm (3.5 in) spread across 9 days. Humidity levels are also higher in July at 86%, as opposed to 73% in September. For more insights, you can check Longquan weather in July.
In comparing the weather between August and September, September generally experiences slightly cooler temperatures, with an average of 23°C (74°F) compared to August's warmer 28°C (82°F). The maximum temperatures are also marginally lower in September at 36°C (98°F) versus 37°C (100°F) in August. Additionally, September sees less precipitation, totaling 89 mm (3.5 in) over 9 days, compared to August's 146 mm (5.8 in) across 12 days. Humidity levels are also somewhat reduced in September at 73%, while August remains more humid at 83%. For a more detailed look at August weather patterns, you can refer to Longquan weather in August.
September generally presents warmer and more humid weather compared to October. The average temperature in September reaches a comfortable 23°C (74°F), with maximums soaring up to 36°C (98°F). This month also experiences higher precipitation, with 89 mm (3.5 in) falling over 9 days. In contrast, October sees a significant drop in temperatures, with an average of 16°C (62°F) and minimums dipping to 6°C (44°F). Although it is slightly less wet, October still brings 57 mm (2.3 in) of rainfall over 8 days and a marginally higher humidity level of 77%. For more details on the October weather in Longquan, you can refer to Longquan weather in October.
September typically offers warmer weather, with average temperatures reaching around 23°C (74°F) and daytime highs soaring up to 36°C (98°F). However, this month also sees a higher amount of rainfall, with 89 mm (3.5 in) spread over about 9 days, contributing to a humidity level of 73%. In contrast, November experiences much cooler temperatures, with an average of 11°C (53°F) and lows dipping to -1°C (31°F). Additionally, November is significantly drier, with only 27 mm (1.1 in) of precipitation over 4 days and higher humidity at 83%. For more detailed information about November weather, visit Longquan weather in November.
September and December present a striking contrast in weather conditions. In September, temperatures range from a mild 14°C (58°F) to a hot 36°C (98°F), with an average temperature of 23°C (74°F). The month sees significant rainfall, totaling 89 mm (3.5 in) over approximately 9 days, and humidity levels are relatively high at 73%. In stark contrast, December features much colder weather, with temperatures dipping as low as -7°C (20°F) and averaging just 5°C (40°F). The maximum temperature only reaches 19°C (66°F), and there is minimal precipitation of 12 mm (0.5 in) over just 2 days, alongside slightly higher humidity at 79%. For a more detailed look at December conditions, you can check Longquan weather in December.
As September rolls in, Longquan's weather starts to transition from the sweltering summer heat to a more temperate climate. The month brings an average temperature that's notably cooler than the peak summer months, hitting a comfortable average of 23°C. However, occasional warm days can still see temperatures soar up to a maximum of 36°C. September is also marked by increased humidity and notable precipitation, with nearly a third of the month experiencing rainfall. This shift not only refreshes the surroundings but also signals the onset of autumn, making it a delightful time to explore the natural beauty of Longquan. For a deeper understanding of what to expect throughout the year, check out Longquan Climate.