Last updated: August 21, 2025
September in Beidaihe, China showcases a delightful transition in weather, with maximum temperatures reaching up to 28°C (83°F) and an average of 22°C (72°F). As summer wanes, the evenings cool down to a comfortable minimum of 14°C (58°F), making it a pleasant time for outdoor activities. Rainfall throughout the month is modest, averaging 69 mm (2.7 in) over 6 days, creating a refreshing atmosphere. With humidity levels around 66%, visitors can enjoy the beach and stunning coastal scenery while staying comfortable in this vibrant seaside town.
In September, Beidaihe experiences a pleasant transition into autumn, with temperatures ranging from a minimum of 14°C (58°F) to a comfortable maximum of 28°C (83°F). As the summer heat wanes, the average temperature settles around 22°C (72°F), creating an inviting climate for outdoor activities and seaside strolls. This month marks a shift from the sultry summer days of July and August, where highs consistently hover around 31°C (88°F), to a more moderate and refreshing warmth that encourages exploration. Overall, September's mild conditions offer a perfect backdrop for enjoying Beidaihe's scenic beauty, making it an ideal time for visitors to experience the area’s charm before the chill of autumn sets in.
In September, Beidaihe experiences a shift in precipitation as the summer's heavy rains subside. With a total of 69 mm (2.7 in) of rainfall, this month marks a significant drop compared to the torrid August, which saw a hefty 238 mm (9.4 in) over 11 days. September's rainfall typically occurs across 6 days, suggesting a more moderate climate as the region transitions into autumn. This marked reduction not only highlights a cooling trend in temperatures but also emphasizes the seasonal pivot that Beidaihe undergoes, making it a unique time for visitors to experience the changing landscape.
In September, Beidaihe experiences a humidity level of 66%, marking a noticeable decrease from the peak summer months of July and August, when humidity soared to 82% and 80%, respectively. This drop signals the gradual transition from the sweltering summer towards the milder autumn season. Interestingly, September's humidity is still quite high compared to earlier months, with an upward trend beginning in April when humidity reached 63%. As the year progresses, the humidity levels tend to fluctuate but generally maintain a rhythm of cooling off after the summer’s peak, making September both a refreshing and humid time to visit this coastal town.
In September, Beidaihe experiences a UV Index of 7, indicating a high exposure category with a burn time of 25 minutes. This trend reflects the gradual decrease from the extreme levels seen in the peak summer months of July and August, which recorded indices of 11 and 9, respectively. As we transition into autumn, the UV levels remain significant, emphasizing the need for sun protection during outdoor activities. This consistent high exposure serves as a reminder of the vibrant solar intensity that characterizes this coastal region even as the season begins to shift. For those planning to soak up the sun, understanding the UV Index is crucial, and you can find more information here: Beidaihe UV Index.
UV Risk Categories
As autumn begins to set in, September in Beidaihe still basks in an impressive 289 hours of sunshine, showcasing a warm transition from the vibrant summer months. Although the sunlight begins to wane compared to the peak 332 hours in May, it remains a delightful time for beachgoers and nature lovers alike. Following a summer filled with abundant daylight, September represents a gentle decline, leading into October with 264 hours of sunshine. This subtle yet noticeable shift hints at the changing seasons, inviting visitors to enjoy the lingering warmth and breathtaking coastal views before the cooler months set in. Overall, September strikes a perfect balance, offering both sunshine and a hint of fall, making it a charming time to explore Beidaihe.
In Beidaihe, September marks a transition in weather patterns as the summer heat begins to taper off. With a 47% chance of sunny days, this month offers a moderate likelihood of enjoying clear skies, subtly reflecting a shift from the more sun-drenched summer months where July reaches a low of 31%. As the year progresses, the chance of sunshine generally rises again, peaking in December at 84%. This seasonal dance highlights September as a period of change, where sunny spells occur but are not as frequent as earlier in the summer. Those planning a trip during this time can expect a mix of weather, making it an ideal month for those who appreciate the gentle transition into autumn.
In Beidaihe, China, the daylight duration showcases a captivating rhythm throughout the year. As winter’s chill recedes, daylight expands from 9 hours in January to a vibrant 14 hours by May, marking the peak of summer brilliance. The warmth of June, July, and August allows for the longest days, but as September arrives, a gentle decline begins, bringing 12 hours of daylight. This transition signals the shift toward autumn, as the days grow shorter, tapering off to 11 hours in October and 9 hours by December. This cycle reflects a natural ebb and flow, inviting residents and visitors alike to embrace the varying light that defines each season in this coastal gem.
As the summer winds down, September in Beidaihe welcomes a refreshing change with an average wind speed of 4.3 m/s (10 mph). This invigorating breeze marks a slight increase from the calmer summer months, where speeds dipped to their lowest, particularly in August at 3.1 m/s (7 mph). With the approaching autumn, the winds become more dynamic, transitioning toward the brisker gusts typical of later months, such as November’s peak at 5.0 m/s (11 mph). September's winds offer a perfect blend of warmth and freshness, inviting both locals and visitors to revel in the gentle yet invigorating atmosphere of this charming coastal locale.
Weather in Beidaihe varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Beidaihe, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January weather in Beidaihe present a striking contrast. In September, temperatures range from a mild 14°C (58°F) at night to a warm average of 22°C (72°F), reaching highs of 28°C (83°F). During this month, the region experiences approximately 69 mm (2.7 in) of rainfall over six days, accompanied by a humidity level of 66%. In stark contrast, January sees frigid conditions, with temperatures plummeting to a minimum of -18°C (1°F) and an average of -2°C (29°F), peaking at just 4°C (40°F). Precipitation is minimal in January, with only about 3 mm (0.1 in) recorded over zero days, and the humidity drops to 48%. For more detailed information, you can check Beidaihe weather in January.
September and February present a striking contrast in weather conditions. In September, temperatures range from a mild 14°C (58°F) at night to a warm 28°C (83°F) during the day, accompanied by relatively high humidity levels of 66%. The month sees moderate rainfall, with 69 mm (2.7 in) over approximately six days. In contrast, February experiences much colder temperatures, with nighttime lows dropping to -10°C (15°F) and daytime highs only reaching 9°C (48°F). This winter month is characterized by significantly lower humidity at 44% and minimal precipitation of just 8 mm (0.3 in) over two days. For more detailed information on February weather, you can visit Beidaihe weather in February.
September and March present contrasting weather conditions. In September, temperatures are milder with a minimum of 14°C (58°F) and an average of 22°C (72°F), reaching a maximum of 28°C (83°F). The month typically sees about 69 mm (2.7 in) of rainfall over approximately 6 days, creating a humid atmosphere with an average humidity of 66%. In stark contrast, March experiences much cooler temperatures, with a minimum of -5°C (23°F) and an average of just 4°C (40°F), peaking at 13°C (55°F). Precipitation drops significantly to 15 mm (0.6 in) across only 4 days, accompanied by lower humidity at 51%. For more detailed information, you can check Beidaihe weather in March.
In comparing the weather of September and April, we notice significant differences in temperature and precipitation. September tends to be much warmer, with minimum temperatures around 14°C (58°F) and averages peaking at 22°C (72°F), while April experiences more chilly conditions, with a minimum of just 1°C (34°F) and an average of 10°C (50°F). Additionally, September sees higher precipitation levels, totaling 69 mm (2.7 in) over approximately six days, compared to April's 28 mm (1.1 in) across four days. Humidity levels are relatively similar, with September at 66% and April slightly lower at 63%. For a more detailed look at the weather in April, you can visit Beidaihe weather in April.
September and May showcase distinct weather patterns, making each month unique. In September, temperatures range from a comfortable minimum of 14°C (58°F) to a warm maximum of 28°C (83°F), with an average of 22°C (72°F). This month experiences more precipitation at 69 mm (2.7 in) over six days, contributing to a humid environment with humidity levels at 66%. In contrast, May presents cooler conditions, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 25°C (77°F) and an average of 16°C (61°F). The precipitation in May is lower at 41 mm (1.6 in) over just four days, while still maintaining the same humidity level of 66%. For more details on the weather, you can check Beidaihe weather in May.
In comparing the weather between September and June, both months have a similar minimum temperature of 14°C (58°F), but September tends to be warmer on average, with temperatures hovering around 22°C (72°F) compared to June's average of 21°C (70°F). Notably, June features a higher maximum temperature of 31°C (87°F), making it generally feel hotter during the day. In terms of precipitation, September sees more rainfall, with 69 mm (2.7 in) over 6 days, while June experiences slightly lower rainfall at 50 mm (2.0 in) across the same number of days. Humidity levels are fairly comparable, with September at 66% and June at 69%. For more detailed insights on June weather, you can check Beidaihe weather in June.
In comparing the weather between September and July, we see notable differences in temperature and precipitation. September tends to be milder, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 28°C (83°F), compared to July's warmer range of 21°C (69°F) to 31°C (88°F). Additionally, July experiences significantly higher precipitation at 139 mm (5.5 in) over approximately 10 days, while September sees only 69 mm (2.7 in) across 6 days. Humidity levels are also higher in July at 82%, compared to September's 66%. For a more detailed look at July weather, visit Beidaihe weather in July.
In September, the weather begins to transition into cooler temperatures, with a minimum of 14°C (58°F) and an average of 22°C (72°F), compared to August's milder minimum of 20°C (68°F) and an average of 26°C (78°F). While September brings pleasant warmth with a maximum of 28°C (83°F), it still falls short of August's peak at 31°C (87°F). Additionally, September experiences significantly less precipitation, with 69 mm (2.7 in) over 6 days, contrasted with August's higher total of 238 mm (9.4 in) spread across 11 days. Humidity also decreases from August’s 80% to September’s 66%, making for more comfortable conditions. For more details about the weather in August, check out Beidaihe weather in August.
September typically experiences warmer temperatures with an average of 22°C (72°F), reaching a maximum of 28°C (83°F). In contrast, October sees a noticeable drop in temperature, averaging only 15°C (59°F) and peaking at 25°C (77°F). While September receives more precipitation, totaling 69 mm (2.7 in) over 6 days, October is drier with 39 mm (1.5 in) across just 4 days. Humidity also slightly increases in October to 70%, compared to 66% in September. For more detailed insights, you can check out Beidaihe weather in October.
In September, the weather is notably warmer, with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 28°C (83°F) and an average of 22°C (72°F). This month also experiences more rainfall, with 69 mm (2.7 in) of precipitation over approximately 6 days and a humidity level of 66%. In contrast, November sees a dramatic drop in temperatures, with minimums plunging to -2°C (28°F) and an average temperature of just 8°C (46°F), peaking at 17°C (63°F). Precipitation is considerably lower in November, at 22 mm (0.9 in) over just 3 days, while humidity slightly increases to 69%. For a more detailed look at November weather, you can check out Beidaihe weather in November.
In September, the weather is significantly warmer, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 28°C (83°F) and a substantial humidity level of 66%. The month experiences moderate precipitation, averaging 69 mm (2.7 in) over approximately 6 days. In contrast, December brings a stark chill, with temperatures plummeting to a minimum of -13°C (8°F) and a maximum of just 9°C (48°F), resulting in an average temperature of around 0°C (33°F). Rainfall is minimal in December, with only 5 mm (0.2 in) over 1 day and lower humidity at 55%. For more detailed insights on the winter months, check out Beidaihe weather in December.
As summer transitions into autumn, September in Beidaihe offers a delightful change in weather characterized by pleasantly warm temperatures and moderate humidity. With an average temperature of 22°C (72°F), the air remains enjoyable, contrasting with the hot, sweltering months of July and August. Although occasional rain does make an appearance, with about 6 days seeing precipitation, it adds a refreshing touch to the otherwise dry atmosphere of the season. This combination of warmth and moderate humidity makes September an ideal time for visitors looking to experience Beidaihe's coastal charm. For more detailed climate information, visit Beidaihe Climate.