Last updated: August 21, 2025
In September, Yantai, China experiences a delightful blend of warm temperatures and modest rainfall, making it an ideal time for outdoor activities. Temperatures typically peak at a pleasant 29°C (85°F), with an average of 23°C (73°F) and dipping to a comfortable 14°C (58°F) in the cooler evenings. Rainfall is relatively light, with a total of 74 mm (2.9 in) spread across about 5 days, and humidity levels hover around 74%, adding a touch of softness to the air. This combination of warmth and humidity creates a vibrant atmosphere, perfect for exploring the scenic coastal landscapes and enjoying Yantai's rich cultural heritage.
As September arrives in Yantai, China, the weather begins to transition into the invigorating embrace of autumn. With minimum temperatures hovering around 14°C (58°F) and averaging 23°C (73°F), the warmth still lingers from summer, striking a perfect balance for outdoor activities. The maximum temperatures rise to about 29°C (85°F), allowing for pleasant days under the sun while nights start to cool down, reminiscent of the crispness of fall. This month marks a delightful shift, where the warmth of late summer gradually gives way to the refreshing breezes of autumn, inviting both residents and visitors to enjoy the vibrant scenery and cultural festivities that Yantai has to offer.
In September, Yantai experiences a significant shift in precipitation patterns, with rainfall totaling 74 mm (2.9 in) spread over 5 days. This marks a noticeable decline from the intense summer months, where July and August saw much heavier downpours of 109 mm and 121 mm, respectively. The rainfall in September signals the transition towards autumn, as it’s a substantial drop from the high summer levels but still higher than the precipitation levels of early spring months. This moderate rainfall helps nourish the landscape, creating a refreshing backdrop as temperatures begin to cool, setting the stage for the dry spell that follows in October.
As summer fades into autumn, September in Yantai, China, experiences a notable drop in humidity, averaging 74%. This marks a significant decrease from the sweltering peak of 93% in July and the sustained high levels of 91% in August. While still humid, September's conditions evoke a sense of relief compared to the preceding months dominated by intense moisture. Overall, there is a clear trend of increasing humidity from the start of the year, peaking in mid-summer, before transitioning into the more moderate levels of fall. This gradual retreat from humidity creates a pleasantly crisp atmosphere, inviting residents and visitors alike to embrace the changing season.
As September rolls into Yantai, China, residents and visitors can expect a very high UV Index of 8, with a recommended burn time of just 15 minutes for unprotected skin. This marks a slight decrease from the extreme levels seen in the peak summer months of July and August, where the UV Index reached 11, emphasizing the need for continued sun safety measures. Notably, as we transition into the autumn months, the UV Index begins to decline—falling to 6 in October—indicating a gradual shift towards more moderate sun exposure conditions. Despite the reduction in UV intensity, the necessity for protection remains relevant, reminding everyone that sun safety is essential year-round. For more details on UV levels throughout the year, visit the Yantai UV Index.
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September in Yantai, China, offers a delightful transition as summer wanes, boasting 281 hours of sunshine. This is a notable reduction from July's peak of 329 hours, but it still maintains a robust amount of daylight. As autumn approaches, the sunshine hours gradually decrease, following the trend established earlier in the year, where bright months like May and June saw over 300 hours of sun. Overall, September strikes a fine balance—while it signals the end of the sun-drenched summer, it still grants residents and visitors ample opportunity to bask in the warmth and beauty of this coastal city. The steady decline into October with 263 hours indicates the imminent embrace of fall, making September a perfect time to enjoy Yantai’s scenic waterfronts and vibrant parks.
In Yantai, China, the likelihood of sunny weather in September stands at 47%, aligning closely with the average for spring and early autumn months. This percentage reflects a mild increase compared to the sunnier summer months, yet it remains significantly lower than the sunniest months of November and December, which boast 58% and 56% chances, respectively. Interestingly, September's sun chances mirror those of April and are slightly better than the rainier summer months of June and July. As the season transitions, residents and visitors can expect a blend of sunny and cloudy days, making it a delightful time to enjoy the region’s scenic views and outdoor activities.
As September arrives in Yantai, China, the days begin to subtly shift, bringing about a reduction in daylight from 13 hours in August to 12 hours. This transition marks a gentle decline that continues through the autumn months, reflecting the changing seasons. The daylight duration from January's 9 hours to May's peak of 14 hours showcases a clear upward trend as spring blooms, but by September, nature prepares for the cooler days ahead. The gradual decrease reminds us of the cyclical rhythm of the year, where the warmth of summer gives way to the crispness of fall, offering a beautiful balance between light and dark.
As September arrives in Yantai, China, the wind begins to pick up, gently ushering in a shift in seasons. With an average wind speed of 4.1 m/s (9 mph), September showcases a subtle increase compared to the calmer summer months, where average winds dipped to their lowest points in July and August. This slight rise is a precursor to the breezier months ahead, reflecting a trend where the wind begins to invigorate the coastal landscape, culminating in stronger gusts as autumn unfolds. Notably, this transition highlights how September serves as a bridge, not just to autumn, but to a dynamic change in the local climate, making it an exhilarating time to experience Yantai's coastal charm.
Weather in Yantai varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Yantai, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present starkly contrasting weather conditions. In September, temperatures range from a mild 14°C (58°F) at night to a warm average of 23°C (73°F), peaking at 29°C (85°F) during the day. The month experiences a fair amount of rainfall, totaling 74 mm (2.9 in) over about 5 days, accompanied by a relatively high humidity level of 74%. In contrast, January brings frigid temperatures, with nighttime lows plummeting to -11°C (13°F) and an average temperature of just 0°C (32°F), peaking at a mere 8°C (47°F). The winter month is much drier, with only 17 mm (0.7 in) of precipitation over 3 days and a lower humidity of 65%. For more details on January weather, visit Yantai weather in January.
September and February present strikingly contrasting weather conditions. In September, temperatures are relatively warm, ranging from a minimum of 14°C (58°F) to a maximum of 29°C (85°F), with an average of 23°C (73°F). The month experiences a moderate level of precipitation, totaling 74 mm (2.9 in) over about five days, and humidity levels are notably high at 74%. In contrast, February brings chilly weather with temperatures dropping significantly, featuring a minimum of -8°C (18°F) and a maximum of 16°C (61°F), while the average temperature hovers around just 1°C (34°F). Precipitation in February is much lower, at 17 mm (0.7 in) over four days, accompanied by a decrease in humidity to 62%. For more details on February weather, you can check Yantai weather in February.
September and March present contrasting weather patterns. In September, temperatures are milder, with an average of 23°C (73°F) and highs reaching up to 29°C (85°F), making it ideal for outdoor activities. The month also experiences a moderate amount of precipitation, averaging 74 mm (2.9 in) over about 5 days, accompanied by higher humidity levels at 74%. In contrast, March transitions into spring with much cooler temperatures, where the average is only 6°C (43°F) and highs of 19°C (67°F). This month sees significantly lower precipitation of 23 mm (0.9 in) over about 3 days and a slightly lower humidity at 69%. For more specific details about March weather, you can check Yantai weather in March.
In September, the weather is generally warmer compared to April, with average temperatures ranging from a minimum of 14°C to a maximum of 29°C, whereas April sees much cooler temperatures, with a minimum of 3°C and a maximum of 25°C. September also experiences higher humidity at 74%, compared to April's 81%, which can make the warmer days feel more intense. Additionally, precipitation is more significant in September, totaling 74 mm over 5 days, compared to April's 45 mm, but both months share the same number of rainy days. For more detailed insights, you can check Yantai weather in April.
In September, the weather tends to be warmer, with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 29°C (85°F) and an average of 23°C (73°F). This month also experiences a moderate amount of precipitation, totaling 74 mm (2.9 in) over about 5 days, accompanied by a humidity level of 74%. In contrast, May is cooler, with a minimum temperature of 9°C (48°F), an average of 17°C (63°F), and a higher maximum of 31°C (88°F). Precipitation is slightly less in May, at 57 mm (2.3 in) over 6 days, but the humidity is higher at 82%. Overall, September offers warmer temperatures and more rain, while May presents a milder climate with a higher potential for sunny days. For more detailed information, check out Yantai weather in May.
In comparing the weather of September and June, we find that both months exhibit warm temperatures, but with slight differences. September features a minimum temperature of 14°C (58°F), an average of 23°C (73°F), and a maximum of 29°C (85°F), while June starts slightly warmer, with a minimum of 15°C (59°F), an average of 22°C (72°F), and peaks at 31°C (88°F). Rainfall is comparable, with September receiving 74 mm (2.9 in) over 5 days and June slightly less at 64 mm (2.5 in) across 6 days. Humidity is notably higher in June at 86%, compared to September's 74%, contributing to the more sultry feel of early summer. For more detailed information, you can check Yantai weather in June.
In comparing the weather between September and July, September generally offers milder temperatures, with a minimum of 14°C (58°F) and an average of 23°C (73°F), peaking at 29°C (85°F). In contrast, July experiences warmer conditions, featuring a minimum of 20°C (69°F) and an average of 26°C (78°F), reaching maximums of 32°C (90°F). Additionally, July is typically wetter, receiving 109 mm (4.3 in) of precipitation over 9 days, compared to September’s 74 mm (2.9 in) spread over just 5 days. Humidity levels are also notably higher in July at 93%, while September sees a more comfortable humidity of 74%. For a more detailed look at July's weather specifics, you can visit Yantai weather in July.
In August, the weather is notably warmer and more humid, with average temperatures ranging from a minimum of 20°C (69°F) to a maximum of 33°C (91°F). The month experiences higher precipitation, totaling 121 mm (4.8 in) over 13 days, contributing to a humidity level of 91%. In contrast, September brings milder temperatures, averaging between 14°C (58°F) and 29°C (85°F), with less rainfall at 74 mm (2.9 in) spread over just 5 days. This leads to a more comfortable humidity level of 74%. For those interested in August's specifics, details can be found here: Yantai weather in August.
September and October exhibit a notable shift in weather patterns. September tends to be warmer, with average temperatures around 23°C (73°F) and maximums reaching 29°C (85°F), while October witnesses a drop in average temperature to 16°C (62°F), with maximums around 26°C (80°F). Additionally, September experiences more precipitation, totaling 74 mm (2.9 in) over five days, compared to October’s lighter rainfall of just 31 mm (1.2 in) also over five days. Humidity is relatively similar, hovering around 74% in September and slightly decreasing to 72% in October. For a more detailed insight, check Yantai weather in October.
In September, the weather is pleasantly warm, with average temperatures reaching 23°C (73°F), peaking at a maximum of 29°C (85°F). This month experiences a fair amount of rain, with 74 mm (2.9 in) falling over five days, contributing to a humidity level of 74%. In contrast, November brings a significant drop in temperatures, where the average settles at 10°C (50°F), and even the maximum doesn't exceed 21°C (70°F). Precipitation decreases notably to 32 mm (1.2 in) over the same five days, and humidity remains relatively steady at 71%. For more detailed information on the November weather, you can visit Yantai weather in November.
September weather is characterized by warm temperatures, with minimums around 14°C (58°F) and average highs reaching up to 29°C (85°F). The month typically experiences 74 mm (2.9 in) of precipitation across about 5 days, paired with a humidity level of 74%. In contrast, December presents a stark shift, with temperatures dropping significantly, featuring lows of -8°C (18°F) and an average high of only 13°C (55°F). While December experiences less precipitation—approximately 25 mm (1.0 in) over 6 days—it has slightly lower humidity at 69%. For more details on the weather in December, visit Yantai weather in December.
As summer gives way to autumn, September in Yantai brings a delightful shift in weather that sets it apart from the scorching summer months. Temperatures cool down, offering a comfortable average of 23°C (73°F), making outdoor activities pleasant without the overwhelming heat. While humidity remains at a moderate 74%, the drop in temperatures creates a refreshing atmosphere, perfect for exploring the city. Although September experiences a bit of rain with 74 mm over 5 days, these showers are often brief and serve to enhance the lush landscapes. For a more in-depth look at Yantai's climate and how it changes throughout the year, visit Yantai Climate.