Last updated: August 21, 2025
September weather in Tianya, China is characterized by warm temperatures and substantial rainfall. With a maximum of 32°C (90°F) and an average of 28°C (82°F), the month offers a balmy atmosphere, though it can feel more intense due to high humidity levels at 82%. Rainfall is frequent, averaging 210 mm (8.3 in) over 24 days, making September one of the wetter months in the region. Visitors should be prepared for the combination of warmth and moisture, making it essential to plan activities accordingly.
In September, Tianya, China, experiences warm and inviting temperatures that signal the end of summer. With a minimum of 25°C (77°F) and an average temperature of 28°C (82°F), the weather is notably pleasant for outdoor activities. The maximum reaches up to 32°C (90°F), providing plenty of opportunities to enjoy the lingering warmth. This consistent warmth, similar to August, showcases a transitional phase as the city gradually shifts into the cooler autumn months ahead. Travelers can expect a delightful blend of sunny days and comfortable evenings, making September an ideal time to explore all that Tianya has to offer.
September in Tianya, China, marks a notable shift in the region's precipitation patterns, contributing 210 mm (8.3 in) of rain over 24 days. Following the peak monsoon months of July and August, which delivered 356 mm and 315 mm respectively, September exhibits a decrease in total rainfall but still remains substantial. This trend indicates a transition phase where the intense summer rains begin to taper off, yet the lingering humidity keeps the atmosphere charged. The progressive decline in precipitation from the peak months reflects a clear seasonal shift, setting the stage for the drier months ahead, while still ensuring a lush and vibrant landscape typical of early autumn.
September in Tianya, China, marks a slight dip in humidity after the peak summer months. With humidity sitting at 82%, the air remains noticeably moist, although it cools from the respective 87% levels experienced in July and August. Throughout the year, a gradual increase in humidity is observed during the warmer months, peaking in the depths of summer before beginning to decline in autumn. As September transitions into October, the humidity level further decreases to 80%, suggesting a gradual shift towards drier conditions as the year progresses. This pattern showcases the typical climatic rhythm of Tianya, where the warmth of summer gives way to the gentler embrace of autumn.
In September, Tianya, China, continues to experience a notably high UV Index of 13, categorizing it as extreme and necessitating a cautious approach to sun exposure. With only 10 minutes before sunburn potential sets in, it's crucial to prioritize sun safety measures. Following the peak intensity in August, September sees a slight dip in the UV Index, yet it maintains its extreme exposure classification. This trend of consistently high UV levels from February through September highlights the need for protective practices during these months, ensuring outdoor enthusiasts can enjoy the beautiful weather without compromising their skin health. For more detailed information, visit Tianya UV Index.
UV Risk Categories
In September, Tianya basks in a delightful 288 hours of sunshine, continuing the mild warmth from the vibrant summer months. As days gradually shorten, the sun's embrace remains generous, marking a gentle transition from the peak of summer. This month presents a slight dip from August's 282 hours but still outshines the dreary winter months ahead. In fact, the trend of increasing sunshine from January's 227 hours to May's peak of 323 hours showcases the region's seasonal magnificence, making September an inviting month for outdoor adventures under the golden sun. As the year progresses, September serves as a sweet reminder that while the seasons change, the allure of sunshine in Tianya persists.
In Tianya, China, the likelihood of sunny weather in September is relatively modest, with a 33% chance of sunshine. This marks a notable dip from the brighter conditions experienced earlier in the year, particularly in February when sunny days surge to 68%. The trend indicates that as summer gives way to early autumn, the sun becomes somewhat shy, with June and August witnessing the lowest probabilities of clear skies, at just 19% and 20% respectively. As September approaches, there is a slight improvement from these summer lows, yet it remains below the year’s averages seen in the more favorable months. Overall, if you're planning a trip in September, you might want to pack an umbrella along with your sunglasses!
As the gradual shift toward autumn begins, September in Tianya, China, offers a rich tapestry of 12 hours of daylight. This month continues the balanced daylight seen in May and August, reflecting a steady decline from the sun-drenched 13-hour stretches of summer. The daylight duration remains consistent, marking a smooth transition as the days shorten in preparation for the cooler months ahead. This rhythmic cycle of light not only highlights the beauty of September's early autumn but also hints at the impending arrival of cozy, shorter days that characterize the fall season.
In September, the winds of Tianya, China, whisper at an average speed of 3.5 m/s (8 mph), a gentle transition from the breezy days of summer. As the seasons shift, September's winds are slightly calmer than those in the peak of summer—just a notch below the energetic gusts of July and May, both reaching 4.3 m/s (10 mph). While the wind speed dips from the highs of warmer months, it still brings a refreshing feel to the air, setting the stage for the breezier months ahead. With October's winds expected to pick up to 4.7 m/s (10 mph), it’s clear that Tianya's autumn will usher in a new rhythm, inviting residents and visitors alike to revel in the seasonal change.
Weather in Tianya varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Tianya, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather conditions. September boasts warmer temperatures, with a minimum of 25°C (77°F) and an average around 28°C (82°F), peaking at 32°C (90°F). However, it also has higher humidity at 82% and significant precipitation, totaling 210 mm (8.3 in) over 24 days. In stark contrast, January features cooler temperatures, with a minimum of 12°C (53°F), averaging 22°C (71°F), and a maximum of 27°C (81°F). The month experiences much less rainfall, with only 15 mm (0.6 in) occurring across just 2 days, and lower humidity at 70%. For a detailed look at the weather during this month, visit Tianya weather in January.
In September, the weather is considerably warmer and more humid, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 32°C (90°F). The month experiences significant rainfall, totaling 210 mm (8.3 in) over 24 days, contributing to a high humidity level of 82%. In contrast, February presents a much cooler climate, with temperatures peaking at an average maximum of 27°C (81°F) and a minimum of 14°C (57°F). This month sees significantly less rain, with only 24 mm (0.9 in) of precipitation over just 4 days, resulting in a lower humidity of 73%. For more details on February weather, you can check out Tianya weather in February.
In comparing the weather of September and March, September is characterized by significantly warmer temperatures, with a minimum of 25°C (77°F) and an average of 28°C (82°F), peaking at 32°C (90°F). In contrast, March sees cooler conditions, with temperatures ranging from a minimum of 17°C (64°F) to an average of 24°C (76°F) and a maximum of 29°C (84°F). Additionally, September experiences much higher rainfall, totaling 210 mm (8.3 in) over 24 days, while March is much drier, with only 25 mm (1.0 in) over just 4 days. Humidity levels also differ slightly, with September at 82% and March at 75%. For more detailed information, you can refer to Tianya weather in March.
In September, the weather is significantly warmer and wetter compared to April. September boasts average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 32°C (90°F), while April showcases a milder range with minimums of 17°C (63°F) and maximums of 31°C (87°F). Additionally, September experiences much higher rainfall, with 210 mm (8.3 in) occurring over 24 days, in contrast to April's 40 mm (1.6 in) over just 9 days. Humidity levels are also elevated in September at 82%, compared to 75% in April. For more details, check out Tianya weather in April.
When comparing the weather in September and May, we see notable differences in temperature, precipitation, and humidity. September generally has a higher minimum temperature of 25°C (77°F) and a maximum of 32°C (90°F), with an average temperature of 28°C (82°F). However, it also experiences significantly more rainfall, with 210 mm (8.3 in) spread over 24 days, resulting in a higher humidity level of 82%. In contrast, May has a slightly lower minimum temperature of 21°C (71°F) and a maximum of 33°C (92°F), but while it sees a similar average temperature of 28°C (82°F), it receives less rainfall, totaling 123 mm (4.8 in) over 16 days, and a lower humidity of 78%. For a more detailed look at May's weather, you can check Tianya weather in May.
When comparing the weather in September and June, we see some similarities, but also notable differences. Both months have a minimum temperature of 25°C (77°F) and a maximum temperature that peaks at 32°C (90°F), but June is slightly warmer on average with a temperature of 29°C (84°F) compared to September's 28°C (82°F). In terms of precipitation, September receives 210 mm (8.3 in) over 24 days, while June has a bit more rain at 223 mm (8.8 in) spread across 22 days. Additionally, September's humidity levels are slightly higher at 82%, compared to June's 80%. For more detailed information on the weather in June, you can check Tianya weather in June.
In both September and July, temperatures remain quite similar, with minimums around 25°C (77°F), average temperatures of 28°C (82°F), and maximums reaching up to 32°C (90°F). However, July experiences significantly higher rainfall, totaling 356 mm (14.0 in) over 23 days, compared to September's 210 mm (8.3 in) over 24 days. Additionally, July has a slightly higher humidity level at 87% compared to September's 82%, making July feel more muggy. For more details on the weather specifics during July, you can check Tianya weather in July.
In comparing the weather between August and September, both months maintain similar temperature ranges, with September's minimum and average temperatures remaining the same as August, but with a slightly higher maximum. However, September experiences a significant decrease in precipitation, with 210 mm compared to August's 315 mm, along with fewer rainy days—24 in September versus 27 in August. Humidity levels are also slightly lower in September at 82% compared to 87% in August. For more detailed information, you can check Tianya weather in August.
September and October exhibit a noticeable shift in weather patterns. September features warmer temperatures, with a minimum of 25°C (77°F) and an average of 28°C (82°F), while October sees a decrease in the average temperature to 26°C (80°F), with a minimum of 21°C (71°F). Precipitation remains consistent, with September receiving 210 mm (8.3 in) over 24 days, compared to October's slightly higher 214 mm (8.4 in) over just 17 days. Humidity levels are relatively similar, with September at 82% and October slightly lower at 80%. For more details about the weather in October, you can check Tianya weather in October.
In September, the weather is significantly warmer and more humid, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 32°C (90°F) and an average of 28°C (82°F). This month also experiences substantial rainfall, receiving about 210 mm (8.3 in) over 24 days, resulting in a humidity level of 82%. In contrast, November brings cooler temperatures, with a minimum of 18°C (65°F) and a maximum of 30°C (86°F), averaging 25°C (77°F). The months differs greatly in terms of precipitation as well, as November sees only 64 mm (2.5 in) of rain over just 5 days, and a lower humidity of 76%. For more details on the weather patterns in this month, you can check Tianya weather in November.
In September, the weather is characterized by warm temperatures, with a minimum of 25°C (77°F) and average highs reaching up to 32°C (90°F). This month experiences significant rainfall, totaling 210 mm (8.3 in) over 24 days, resulting in high humidity levels around 82%. In contrast, December brings a noticeable cool down, with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 28°C (83°F) and an average of 22°C (72°F). The precipitation dramatically decreases to just 15 mm (0.6 in) over 3 days, with humidity levels slightly lower at 75%. For more specific weather details in December, check out Tianya weather in December.
As September arrives in Tianya, the tropical charm of the region is accompanied by higher humidity levels and increased rainfall, setting it apart from the drier months of summer. With the average temperature hovering around a warm 28°C, this month offers a significant contrast to the sweltering heat experienced earlier, making outdoor activities enjoyable but requiring some preparation for frequent showers. The consistent rainfall, totaling around 210 mm, creates a lush environment, ideal for experiencing the natural beauty of Hainan’s landscapes. Despite the clouds and moisture, September remains a captivating time to visit, providing a glimpse into the vibrant and dynamic climate of the area. For a more detailed look at what to expect, check out Tianya Climate.