Last updated: August 21, 2025
As September unfolds in Menghai, China, the weather presents a blend of warmth and humidity. With maximum temperatures reaching 32°C (90°F) and an average of 23°C (74°F), the days are pleasantly warm. However, minimum temperatures can dip to 16°C (60°F), providing a refreshing break during the cooler nights. Rainfall is a significant feature this month, with a total of 200 mm (7.9 in) distributed over 23 days, creating a lush environment. The humidity level remains high at 83%, adding to the tropical feel. Visitors can expect a vibrant atmosphere that showcases both the beauty and challenges of a wet September.
In September, Menghai, China, marks a delightful transition as summer gives way to autumn. With temperatures ranging from a minimum of 16°C (60°F) to a pleasant average of 23°C (74°F), the days are still warm but gradually cooling off from the peak summer heat. The maximum temperature reaches about 32°C (90°F), creating a comfortable climate that invites outdoor exploration and the beauty of changing leaves. This month signifies a shift, as the region's climate begins to mellow, offering a perfect backdrop for travelers and locals alike to relish in the onset of fall. As temperatures cool slightly from the sweltering summer months, September is an ideal time to enjoy Menghai’s natural beauty and vibrant culture.
In September, Menghai experiences a substantial drop in precipitation compared to the preceding months, with 200 mm (7.9 in) of rainfall over 23 days. This aligns with the seasonal transition as the region shifts from the peak rainy period of July and August, which see substantial rainfall exceeding 300 mm. Notably, September's precipitation is significantly lower than midsummer figures, yet it's still a robust amount that supports lush greenery. This trend suggests a gradual decrease in both rainfall volume and frequency as the region prepares for a drier autumn, with October further reducing precipitation to 174 mm. Thus, September serves as a pivotal month in Menghai’s climatic rhythm, balancing the tailend of the monsoon while hinting at the upcoming dry season.
In September, Menghai experiences a noticeable shift in humidity, reaching 83%, a significant drop from the peak of 92% seen in the preceding months of July and August. This transition marks the end of the sweltering summer season, where humidity levels soar, and ushers in a more moderate fall climate. The elevated humidity in September, while still high, hints at the changing seasons, as it begins to decline towards the more comfortable levels of October and November. Interestingly, the trend reveals that the humidity fluctuates considerably from the dry season in April (41%) to the high summer months, creating a dynamic and humid environment that characterizes the region.
In September, Menghai, China, continues to experience an extreme UV Index of 14, paralleling the intensity seen in August. This month, the recommended burn time remains at a swift 10 minutes, emphasizing the high risks associated with sun exposure. A notable trend throughout the year shows an upward trajectory from the typical very high ratings in the winter months to the extreme levels during summer, peaking in May and June. As the year progresses, awareness and protection against UV radiation become increasingly crucial. For more detailed insights on UV exposure in Menghai, explore Menghai UV Index.
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In September, Menghai, China, basks in a welcoming 274 hours of sunshine, heralding the transition from summer to autumn. This month sees a dip in sunlight compared to the peak of 335 hours in May, yet it remains brighter than the mid-year slump experienced in July and August, where totals fell to 254 and 253 hours respectively. As the days gradually shorten, September serves as a gentle reminder of the abundant light felt earlier in the year, especially when juxtaposed with the 330 hours of sun in March. With autumn's approach, the golden rays of September continue to paint Menghai in warm hues, inviting residents and visitors alike to savor the last glimpses of summer.
In Menghai, China, September offers a moderate chance of sunny weather, with a 33% likelihood of clear skies. This marks a noticeable shift from the vibrant sunshine seen in the spring months, where March boasts an impressive 84% chance, and even February enjoys a healthy 71%. However, as summer transitions into autumn, the prospects for sunshine drop significantly, reflecting the pattern observed in the preceding summer months, which see a staggering low of 10% in July and August. As the year progresses towards October, the likelihood of sunnier days further dwindles to 23%, suggesting that September serves as a transitional month—offering a brief window of sun amid the encroaching cloudiness of autumn.
As September unfolds in Menghai, China, the lingering warmth of summer is reflected in its 12 hours of daylight, maintaining the peak of the summer months. After enjoying a gradual increase in sunlight from 10 hours in January to a high of 13 hours from May to August, daylight begins to taper off as autumn approaches. This trend not only enhances the vibrant hues of the changing landscape but also signals the shift towards the shorter days of October and beyond. Throughout the year, Menghai experiences a gentle ebb and flow in daylight, emphasizing the rhythmic beauty of nature as it transitions through each season.
As September unfolds in Menghai, China, the wind carries a subtle whisper, reflecting a gentle decline in average wind speed to 1.2 m/s (3 mph). This marks the end of a summer season characterized by steady breezes, with speeds maintaining a consistent rhythm between 1.4 to 1.7 m/s from April through August. As we transition into the autumn months, this slight decrease hints at the changing seasons, creating a serene atmosphere that envelops the landscape. Notably, September's winds are among the calmest of the year, echoing the tranquility that often accompanies this time, providing a perfect backdrop for reflection and appreciation of Menghai's natural beauty.
Weather in Menghai varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Menghai, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January showcase distinct climatic contrasts. In September, temperatures fluctuate between a minimum of 16°C (60°F) and a maximum of 32°C (90°F), with an average of 23°C (74°F). However, it is also a wet month, receiving around 200 mm (7.9 in) of rain over 23 days, coupled with high humidity levels at 83%. In contrast, January's weather is much cooler, with temperatures ranging from a low of 4°C (40°F) to a high of 28°C (82°F), averaging 15°C (60°F). Precipitation during this month is significantly lower, at 44 mm (1.7 in) over only 6 days, and the humidity decreases to 57%. For a deeper dive into January's conditions, you can check out Menghai weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a minimum of 16°C (60°F) to a maximum of 32°C (90°F), with an average of 23°C (74°F). The month is marked by high humidity at 83% and significant rainfall of 200 mm (7.9 in) over 23 days. In contrast, February offers cooler temperatures, with a minimum of 5°C (42°F) and a maximum of 30°C (86°F), averaging just 16°C (62°F). Precipitation is markedly lower at 27 mm (1.1 in) across only 3 days and humidity is reduced to 57%. For a deeper look at February’s weather, you can visit Menghai weather in February.
In September, weather conditions tend to be warmer and more humid, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 32°C (90°F) and an average of 23°C (74°F). The month is also characterized by significant rainfall, totaling around 200 mm (7.9 inches) over approximately 23 days, leading to a high humidity level of 83%. In contrast, March experiences cooler temperatures, with a minimum of 8°C (47°F), an average of 20°C (68°F), and a maximum of 35°C (94°F). Precipitation is minimal during this month, only about 32 mm (1.2 inches) across just 4 days, resulting in a much lower humidity of 48%. For more details on March weather, you can check Menghai weather in March.
September and April present contrasting weather conditions. In September, temperatures range from a minimum of 16°C (60°F) to a maximum of 32°C (90°F), with an average of 23°C (74°F). The month is characterized by higher humidity at 83% and significant rainfall, totaling 200 mm (7.9 in) over 23 days, making it a relatively wet period. In contrast, April enjoys warmer maximum temperatures reaching up to 35°C (96°F) and a milder average temperature of 22°C (71°F), with much lower humidity at 41%. Rainfall in April is also less frequent, totaling 106 mm (4.2 in) over just 11 days. For more detailed information about the weather patterns specific to this month, visit Menghai weather in April.
September typically features temperatures ranging from a minimum of 16°C (60°F) to a maximum of 32°C (90°F), with an average of 23°C (74°F). However, this month also sees significant precipitation, receiving around 200 mm (7.9 in) over 23 days, contributing to a high humidity level of 83%. In contrast, May offers slightly warmer conditions, with minimum temperatures of 14°C (58°F) and maximum highs reaching up to 38°C (101°F), averaging 24°C (75°F). May experiences less rainfall, totaling 141 mm (5.5 in) over just 13 days, and a more moderate humidity of 60%. For more information on the weather patterns in May, check out Menghai weather in May.
September and June exhibit distinct weather patterns, with September experiencing slightly cooler temperatures. In September, the minimum temperature is around 16°C (60°F), with an average of 23°C (74°F) and a maximum of 32°C (90°F). In contrast, June is warmer, with minimums reaching 19°C (67°F) and maximums at 33°C (91°F). While both months are relatively humid, September has a slightly higher humidity level at 83% compared to June's 80%. In terms of precipitation, June sees more rainfall, totaling 243 mm (9.6 in) over 26 days, while September has 200 mm (7.9 in) spread over 23 days. For a closer look at June’s weather, you can check the details here: Menghai weather in June.
In comparing the weather between September and July, September tends to be slightly cooler, with average temperatures ranging from a minimum of 16°C (60°F) to a maximum of 32°C (90°F), while July sees a minimum of 19°C (67°F) and an average of 24°C (75°F). Both months experience maximum temperatures of 32°C (90°F), but July is characterized by a higher humidity level of 92% compared to September's 83%. Rainfall is also a significant factor; July has a higher total precipitation of 291 mm (11.5 in) over 29 days, whereas September receives 200 mm (7.9 in) across 23 days. For a detailed look at July weather, visit Menghai weather in July.
In comparing the weather patterns of August and September, we can observe a notable shift. September sees a decrease in minimum temperatures, with a low of 16°C (60°F) compared to August's 19°C (67°F). The average temperature in September is slightly lower at 23°C (74°F), while August maintains a higher average of 24°C (75°F). Additionally, September experiences slightly higher maximum temperatures at 32°C (90°F) versus August's 33°C (91°F). Precipitation is significantly reduced in September, totaling 200 mm (7.9 in) over 23 days, compared to the much wetter August, which records 301 mm (11.8 in) across 28 days. Humidity also drops from 92% in August to 83% in September. For more detailed information about August weather, you can visit Menghai weather in August.
September and October exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 16°C (60°F) to a maximum of 32°C (90°F), with an average of 23°C (74°F). The month experiences more precipitation, totaling 200 mm (7.9 in) over 23 days, accompanied by higher humidity levels at 83%. In contrast, October sees slightly cooler temperatures, with a minimum of 14°C (58°F), an average of 21°C (70°F), and a maximum of 30°C (86°F). Precipitation decreases to 174 mm (6.8 in), occurring over 21 days, and humidity drops to a more comfortable 71%. For more details about the weather in October, visit Menghai weather in October.
September and November exhibit notable differences in weather conditions. In September, temperatures range from a minimum of 16°C (60°F) to a maximum of 32°C (90°F), with an average of 23°C (74°F). The month is characterized by high humidity at 83% and significant rainfall, totaling 200 mm (7.9 in) over 23 days. In contrast, November sees cooler temperatures, with a minimum of 10°C (50°F), an average of 19°C (66°F), and a maximum of 29°C (85°F). Additionally, November experiences much less rainfall, with only 61 mm (2.4 in) across 11 days, along with a drop in humidity to 68%. For a more detailed look at November weather, visit Menghai weather in November.
September and December present a stark contrast in weather conditions. September typically enjoys warmer temperatures, with averages around 23°C (74°F) and highs reaching up to 32°C (90°F). However, it also experiences high humidity at 83% and considerable rainfall, with around 200 mm (7.9 in) of precipitation spread over 23 days. In contrast, December is much cooler, with average temperatures dropping to 15°C (59°F) and maximums of 27°C (81°F). The month is characterized by a significant decrease in precipitation, totaling only 40 mm (1.6 in) over just 6 days, and lower humidity levels at 64%. For more detailed insights into the weather in December, you can visit Menghai weather in December.
September in Menghai presents a unique blend of warmth and moisture that sets it apart from other months. While the temperatures are pleasantly mild, with an average around 23°C, the high humidity levels of 83% give the air a noticeable heaviness. This month is particularly marked by frequent rainfall, occurring on roughly 23 days and amounting to 200 mm of precipitation, making it one of the wettest periods of the year. The lush landscapes thrive in this vibrant environment, creating a scenic backdrop for visitors. If you're curious about how the weather trends evolve throughout the year, be sure to explore more at Menghai Climate.