Last updated: August 21, 2025
September in Beihai, China offers a warm yet humid climate, with temperatures ranging from a pleasant 12°C (54°F) at night to a maximum of 28°C (83°F) during the day, leading to an average of 21°C (69°F). This month also experiences a significant amount of rainfall, accumulating to 188 mm (7.4 in) over 25 days, ensuring the lush landscapes thrive. The high humidity level of 88% adds to the tropical feel, making it essential for visitors to prepare for both sun and rain while enjoying the serene coastal beauty.
In September, Beihai, China, welcomes a gentle transition into autumn, with temperatures starting to cool from the summer heat. The minimum temperature settles at a comfortable 12°C (54°F), while the average hovers around 21°C (69°F), providing a pleasant atmosphere perfect for outdoor exploration. Max temperatures reach a mild 28°C (83°F), allowing for warm days that gradually give way to cooler evenings. This month marks a continuation of the warm weather trend seen in the summer, yet it hints at the approach of fall, making it an ideal time to enjoy the city’s stunning coastal views and rich cultural experiences.
September in Beihai, China, brings a notable shift in precipitation patterns as the summer rains start to ease. With 188 mm (7.4 in) of rain over 25 days, it marks a significant decrease from the torrential downpours of July and August, yet still remains substantial compared to the lighter months that follow. The month showcases a transition, where the frequent and heavy rainfall characteristic of the peak summer season begins to taper off, hinting at the arrival of milder weather ahead. Overall, September serves as a crucial bridge in Beihai's climatic year, balancing the tail end of the annual wet season while setting the stage for drier conditions in October and beyond.
In September, Beihai experiences a significant humidity level of 88%, continuing the high moisture trend established in the summer months. After peaking in July at 93%, humidity levels slightly decrease but remain notably elevated through August and September. This high humidity contributes to a subtropical climate, making the air feel warm and sticky. As the year progresses, October sees a modest drop to 86%, hinting at a gradual transition towards drier autumn conditions. Overall, September stands out as a month where the lingering summer humidity persists, setting the stage for the cooler, less humid months ahead.
As summer gives way to early autumn in Beihai, China, September sees a UV Index of 14, categorized as extreme, with a notable burn time of only 10 minutes. This slight dip from the peak UV Index of 15 in the preceding months signals that while the sun's intensity begins to wane, caution remains essential for outdoor activities. Throughout the year, Beihai experiences a dramatic rise in UV levels, starting from a high of 7 in January and peaking at 15 from June to August. Interestingly, the fall months still warrant vigilance, with October maintaining a high index of 12. Whether you’re soaking up the sun or planning outdoor adventures, staying informed is crucial. For more detailed information, check the Beihai UV Index.
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As September arrives in Beihai, China, the sun graces the city with 271 hours of bright, cheerful light, marking a delightful transition from the sizzling summer months. This influx of sunshine is a noticeable improvement from the peak of July, which dips to a mere 205 hours, while August bounces back with 252 hours. Fortunately, September maintains a comfortable balance, bridging the gap as it paves the way into autumn. The month showcases more sunlight than the earlier summer, yet it still falls significantly short of the spring peak of 341 hours seen in May. As the year advances, the trend of increasing sunshine returns in October and November, suggesting that while summer's intensity wanes, Beihai continues to bask in a warm embrace of sunlight as the seasons shift.
When considering the likelihood of sunny weather in September in Beihai, China, the statistics reveal a notable decline in cheerful skies. With only a 16% chance of sunshine, September is one of the least promising months for sunshine, following a particularly gloomy summer with July and August showcasing merely 6% and 9% respectively. This trend starkly contrasts the brighter months of January through April, which enjoy much higher probabilities of sunny days, peaking in February at an impressive 77%. As autumn approaches, the likelihood of sun remains low, suggesting that visitors in September may want to prepare for overcast conditions while enjoying the city's unique charm.
In September, Beihai enjoys a delightful 12 hours of daylight, maintaining the same sunlight duration as in April and August. As the year progresses, the daylight hours have steadily increased from 10 hours in January to a peak of 13 hours during the summer months of May through July. Following these sun-soaked months, the reduction to 12 hours in September marks a subtle transition toward the shorter days of fall, reflecting nature's cyclical rhythm. As daylight begins to wane, residents can savor the lingering warmth of summer evenings while preparing for the gradually dimming months ahead.
As September unfolds in Beihai, China, the gentle caress of the wind becomes distinctly noticeable, with average speeds dipping to a tranquil 0.9 m/s (2 mph). This gradual decline is part of a broader trend throughout the summer months, where wind speeds have consistently softened from June's breezy 1.1 m/s down to September's calm whispers. It marks a transition from the lively gusts of early spring and brings in a serene ambiance that mirrors the onset of autumn. As the changing season approaches, the subdued winds invite moments of reflection, making this coastal city not just a place to visit, but a serene retreat to experience nature's gentle embrace.
Weather in Beihai varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Beihai, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January exhibit striking contrasts in weather. In September, temperatures typically range from a mild 12°C (54°F) at night to a warm maximum of 28°C (83°F) during the day, accompanied by significant precipitation of 188 mm (7.4 in) over 25 days, resulting in high humidity levels of 88%. In contrast, January presents a cooler climate with temperatures dipping as low as -2°C (28°F) at night and averaging around 10°C (50°F) during the day. Precipitation is minimal, totaling just 30 mm (1.2 in) over only 4 days, and humidity drops to a more comfortable 65%. For a more detailed look, you can check Beihai weather in January.
September and February showcase striking contrasts in weather conditions. September typically enjoys milder temperatures with a minimum of 12°C (54°F) and an average of 21°C (69°F), peaking at a warm 28°C (83°F). However, this month is also marked by significant precipitation, with 188 mm (7.4 in) spread over 25 days and a high humidity level of 88%. In contrast, February experiences a cooler climate, with temperatures ranging from a minimum of -1°C (30°F) to an average of 11°C (52°F) and a maximum of 24°C (76°F). This month is considerably drier, with only 33 mm (1.3 in) of rainfall over just 6 days and lower humidity at 69%. For a deeper look at February weather, check out Beihai weather in February.
In September, the weather is characterized by warmer temperatures, with averages reaching 21°C (69°F), while the minimum can drop to 12°C (54°F) and the maximum can soar to 28°C (83°F). This month also sees significant rainfall, with approximately 188 mm (7.4 in) spread over 25 days, contributing to a high humidity of 88%. In contrast, March experiences much cooler temperatures, with averages around 14°C (58°F). The minimum temperature can fall to 1°C (34°F), while the maximum typically reaches 28°C (82°F), similar to September. However, March is much drier, with only about 57 mm (2.2 in) of precipitation over just 10 days and a much lower humidity of 44%. For a more detailed look at March weather specifics, you can check Beihai weather in March.
September and April present distinct weather patterns, reflecting the transition between summer and autumn versus spring. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 28°C (83°F), with an average of 21°C (69°F). This month is characterized by high humidity at 88% and considerable precipitation, totaling 188 mm (7.4 in) over 25 days. In contrast, April sees cooler temperatures, with a minimum of 6°C (44°F), an average of 16°C (62°F), and a maximum of 29°C (84°F). The precipitation is significantly lower at 92 mm (3.6 in) across only 13 days, and humidity is much more comfortable at 48%. For a more detailed overview of the April climate, you can check out Beihai weather in April.
In September, the weather tends to be warmer and more humid compared to May, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 28°C (83°F). The month sees a higher amount of precipitation, totaling 188 mm (7.4 in) over 25 days, resulting in a humidity level of 88%. In contrast, May experiences slightly cooler temperatures, with a range from a minimum of 9°C (48°F) to a maximum of 30°C (86°F), and less rainfall at 108 mm (4.3 in) over 18 days. The humidity in May is also lower, at 74%. For more details on May's weather, you can visit Beihai weather in May.
In comparing the weather between September and June, both months exhibit similar average temperatures, around 21°C (70°F), with September having slightly lower minimum and maximum temperatures of 12°C (54°F) and 28°C (83°F), respectively. June tends to be a bit warmer, with minimum and maximum temperatures of 14°C (57°F) and 29°C (84°F). However, June sees significantly higher precipitation, totaling 265 mm (10.4 in) over 28 days, compared to September's 188 mm (7.4 in) over 25 days, making June the wetter month. Humidity remains constant at 88% in both months, contributing to a similar muggy feel. For more details, check out this link: Beihai weather in June.
When comparing September and July weather, September features cooler temperatures with a minimum of 12°C (54°F) and a maximum of 28°C (83°F), while July is generally warmer, with a minimum of 17°C (63°F) and a maximum of 30°C (86°F). Both months experience significant rainfall, but July sees much higher precipitation totaling 415 mm (16.3 in) over 29 days compared to September's 188 mm (7.4 in) over 25 days. Humidity levels in July are slightly higher at 93%, compared to September's 88%, contributing to a more oppressively humid feel during the summer month. For more detailed insights, you can check the Beihai weather in July.
In comparing the weather of September and August, we observe that September features slightly cooler temperatures, with a minimum of 12°C (54°F) compared to August's minimum of 16°C (61°F). While both months have an average temperature around 21°C (69°F), August reaches higher maximums of 31°C (88°F), exceeding September's maximum of 28°C (83°F). Precipitation is notably lower in September, with 188 mm (7.4 in) falling over 25 days, whereas August sees a more significant 368 mm (14.5 in) spread across 29 days. Both months also experience high humidity levels, with September at 88% and August slightly higher at 91%. For a more detailed insight into August's climate conditions, you can check Beihai weather in August.
September and October showcase a transition in weather patterns, with September generally warmer and more humid. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 28°C (83°F), averaging 21°C (69°F), while October sees cooler temperatures, with a minimum of 6°C (43°F) and an average of 19°C (66°F), but still reaching up to 28°C (83°F). Precipitation also decreases significantly as October experiences 125 mm (4.9 in) over 18 days compared to September's 188 mm (7.4 in) spread over 25 days. Humidity remains relatively high in both months, with September at 88% and October slightly lower at 86%. For more details, you can check the Beihai weather in October.
In September, the weather is generally warm with average temperatures ranging from a mild 12°C (54°F) at night to a comfortable 21°C (69°F) during the day, peaking at a high of 28°C (83°F). However, it is also quite rainy, with a significant 188 mm (7.4 in) of precipitation spread over 25 days and a humidity level of 88%. In contrast, November brings cooler temperatures, with nighttime lows dropping to 2°C (36°F) and daytime averages around 14°C (58°F), peaking at a maximum of 25°C (77°F). Rainfall is minimal, totaling only 32 mm (1.2 in) over just 6 days, and humidity levels decrease slightly to 85%. For more details on November weather, you can check Beihai weather in November.
September and December present contrasting weather patterns. In September, temperatures range from a mild 12°C (54°F) to a warm max of 28°C (83°F), with an average of 21°C (69°F). The month experiences significant rainfall, totaling 188 mm (7.4 in) over 25 days, contributing to a high humidity level of 88%. In stark contrast, December sees much cooler temperatures, with a minimum of -1°C (30°F) and an average of 11°C (52°F), peaking at 22°C (72°F). This month features far less precipitation, amounting to only 20 mm (0.8 in) over just 3 days, and lower humidity at 79%. For more insights on the December climate, visit Beihai weather in December.
As September rolls in, Beihai experiences a distinct shift in weather patterns compared to the summer months. With higher humidity levels averaging around 88% and frequent precipitation, this month brings a lush and vibrant atmosphere, transformed from the drier conditions earlier in the season. While temperatures remain mild, ranging from comfortable averages to cooler minimums, the consistent rainfall across nearly the entire month signifies a significant transition towards the wetter season. Visitors and locals alike can expect a more tropical feel during this time, making it an ideal period for enjoying Beihai's natural beauty. For more detailed insights into year-round weather conditions, visit Beihai Climate.