Last updated: August 21, 2025
September in Sanya, China boasts a tropical atmosphere characterized by warm temperatures; the maximum often reaches around 32°C (89°F) while the average hovers at a comfortable 28°C (82°F), with nights cooling down to a minimum of 24°C (76°F). However, this month is not just about sunshine; it’s also marked by significant rainfall, with a total of 218 mm (8.6 in) spread over approximately 24 rainy days, resulting in a high humidity level of 82%. Visitors can expect a mix of balmy weather and frequent showers, making it an ideal time to enjoy both the vibrant beach life and the lush tropical scenery.
As summer gracefully transitions to early autumn, Sanya, China experiences warm and inviting temperatures in September. The month boasts a comfortable average of 28°C (82°F), with highs reaching up to 32°C (89°F). This warmth is complemented by a mild nighttime minimum of 24°C (76°F), creating an ideal climate for beachgoers and outdoor enthusiasts. Compared to the peak summer months, temperatures start to gently dip, offering a pleasant reprieve without fully retreating from that tropical warmth. With these consistent conditions, September stands out as a perfect time to explore Sanya's stunning beaches and vibrant culture, all while enjoying the last dappled rays of summer sunshine.
In September, Sanya, China, experiences significant rainfall, with an impressive 218 mm (8.6 in) of precipitation falling over 24 days, marking it as one of the wetter months of the year. This trend continues from the peak rainy months of July and August, where rainfall reaches 338 mm (13.3 in) and 289 mm (11.4 in) respectively. Compared to earlier months, such as January with a mere 16 mm (0.6 in), September’s precipitation highlights the transition into the tail end of the wet season. As temperatures remain warm, these rainfalls contribute to the lush tropical environment that Sanya is known for, reinforcing its reputation as a vibrant destination even during the rainy season.
September in Sanya, China, offers a noticeable dip in humidity compared to the peak summer months, with levels at 82%. This slight decrease, following the sweltering heights of 87% reached in July and August, signals a transition towards the more comfortable fall climate. Humidity gradually rises from 70% in January to a summer peak, creating a progressively muggy atmosphere as the year unfolds. However, as the calendar shifts towards October, the humidity is expected to settle back to a more moderate 80%, making September a perfect time for visitors to enjoy the lingering warmth while experiencing slightly fresher air. Overall, Sanya's humidity showcases a characteristic pattern, where late summer introduces peak moisture before the fall brings relief.
In September, Sanya, China, maintains its reputation for intense sun exposure, with a UV Index of 13, categorizing the conditions as extreme. This mirrors the trend observed throughout the summer months, where UV levels peaked at 14 in both July and August, resulting in a consistent burn time of just 10 minutes. As the seasons begin to shift, the UV Index slightly decreases but remains formidable, underscoring the importance of sun safety. Visitors should continue to take precautions, including the use of sunscreen and protective clothing, to mitigate the risks associated with prolonged sun exposure. For more information on UV levels and safety, visit Sanya UV Index.
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As summer gracefully transitions to autumn, September in Sanya, China offers a delightful 293 hours of sunshine, making it one of the sun-kissed months for the region. This slight dip from the peak of 325 hours in May exemplifies a gradual yet steady decrease in daylight hours as the year unfolds. Notably, July and August maintain robust sunshine totals, with 320 and 299 hours respectively, before a gentle decline in September. While the sunshine may wane slightly, Sanya's warm rays still invite travelers to explore its stunning beaches and vibrant cultures, ensuring that the golden glow of September remains a charming highlight of the year.
In September, the likelihood of enjoying sunny weather in Sanya, China is 33%, which places it among the lower probabilities of the year. The data reveals a notable trend from the earlier months, where February peaks at 66% before gradually declining to a mere 18% in June, followed by slight improvements in July and August. After September, the chances rise again, peaking in November at 59%. This cyclical pattern suggests that while September may not offer the most reliable sunshine, those visiting during this time can still hope for some sunny breaks amidst the transitioning weather.
In Sanya, China, September marks the end of the summer's bright embrace, with 12 hours of daylight available each day. As the month unfolds, daylight gradually begins to recede from its peak during the summer months of June and July, when the sun graced the skies for up to 13 hours. Following the sun's journey, August mirrors September with the same moderate daylight duration. This trend highlights a gentle transition from summer’s longer days into the shorter hours of autumn, with daylight returning to 11 hours as October approaches. As such, September serves as a harmonious balance, allowing residents and visitors to enjoy the lingering warmth before the shift in seasons.
As September rolls into Sanya, China, the island experiences a gentle embrace of breezes, with an average wind speed of 3.5 m/s (8 mph). This marks a slight decline from the more energetic gusts seen in July, which reached 4.3 m/s (10 mph), reflecting the transition into the fall season. The wind speeds during these late summer months maintain a relatively calm rhythm, significantly contributing to Sanya's reputation as a serene getaway. However, anticipation builds for the approaching months, as October ushers in stronger winds, surging to 5.2 m/s (12 mph). This shift hints at the ebb and flow of seasonal change, where tranquil September readings gradually pave the way for the invigorating autumn gales to come.
Weather in Sanya varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sanya, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January exhibit stark contrasts in weather patterns. In September, temperatures are warm, with minimums around 24°C (76°F) and maximums reaching 32°C (89°F), while the average hovers at 28°C (82°F). This month also sees considerable rainfall, with 218 mm (8.6 in) of precipitation spread over 24 days, resulting in a high humidity level of 82%. In contrast, January offers a much cooler climate, with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 27°C (80°F) and an average of 21°C (71°F). Precipitation is minimal at just 16 mm (0.6 in) over only 2 days, contributing to a lower humidity of 70%. For more details, check out Sanya weather in January.
September weather is characterized by much warmer temperatures, with an average of 28°C (82°F) and highs reaching up to 32°C (89°F). In contrast, February offers cooler temperatures, averaging 21°C (71°F) with maximums of 27°C (81°F). Additionally, September experiences significantly more rainfall, with 218 mm (8.6 in) over 24 days, while February sees only 24 mm (1.0 in) over just 4 days. Humidity levels are also higher in September at 82%, compared to February's 73%. For more details, you can check Sanya weather in February.
September and March showcase contrasting weather patterns. In September, temperatures remain warm, with a minimum of 24°C (76°F) and an average of 28°C (82°F), peaking at 32°C (89°F). However, this month also brings significant precipitation, averaging 218 mm (8.6 in) over 24 days, coupled with relatively high humidity at 82%. In contrast, March offers milder conditions, with temperatures ranging from a minimum of 17°C (63°F) to an average of 24°C (75°F) and a maximum of 29°C (84°F). Precipitation is markedly lower at 28 mm (1.1 in) over just 5 days, and humidity decreases to 75%. For a detailed look at March conditions, visit Sanya weather in March.
When comparing the weather in September and April, notable differences in temperature and precipitation emerge. September experiences a warmer climate, with average temperatures ranging from a minimum of 24°C (76°F) to a maximum of 32°C (89°F) and a high humidity of 82%. In contrast, April has slightly cooler temperatures, with a range of 17°C (63°F) to 31°C (87°F) and lower humidity at 75%. Additionally, September is considerably wetter, receiving 218 mm (8.6 in) of rainfall over 24 days, while April sees much less precipitation at 46 mm (1.8 in) over just 11 days. For more details on the weather in April, you can visit Sanya weather in April.
In comparing the weather conditions of September and May, both months exhibit a warm average temperature of 28°C (82°F). However, September experiences slightly higher maximum temperatures, reaching up to 32°C (89°F), compared to May's peak of 33°C (91°F). When it comes to humidity, September has a higher level at 82%, while May is a bit drier at 78%. Precipitation is also more significant in September, with a total of 218 mm (8.6 in) over 24 days, compared to May's 140 mm (5.5 in) over 18 days. For a more detailed look at May's climate, you can check out Sanya weather in May.
When comparing the weather in September and June, we see that both months experience similar temperature ranges, with September showing a minimum of 24°C (76°F) and an average of 28°C (82°F), while June has slightly higher minimum and average temperatures of 25°C (78°F) and 29°C (84°F) respectively. However, both months peak at 32°C (90°F) in temperature. In terms of precipitation, September receives 218 mm (8.6 in) over 24 days, while June has a bit more rainfall at 235 mm (9.2 in) spread across 23 days. Humidity levels are also comparable, with September at 82% and June at 80%. For a more detailed look at June weather, you can visit Sanya weather in June.
In comparing the weather between September and July, both months experience similar temperature ranges, with average highs of 32°C (89°F) and lows around 24°C (76°F) in September and 25°C (78°F) in July. However, July tends to be wetter, with a significant precipitation of 338 mm (13.3 in) compared to September's 218 mm (8.6 in), although both months see rain on approximately 24 days. Humidity levels are also slightly higher in July at 87%, compared to 82% in September. For more detailed information about July weather, you can check this link: Sanya weather in July.
In comparing the weather patterns of September and August, September tends to have slightly lower minimum temperatures, with averages around 28°C (82°F) compared to August's 28°C (83°F). Both months experience similar maximum temperatures, peaking at 32°C (89°F) in September and 31°C (89°F) in August. However, September is marked by less precipitation, accumulating 218 mm (8.6 in) over 24 days, whereas August sees a more significant total of 289 mm (11.4 in) across 26 days. Humidity levels also drop in September to 82%, compared to 87% in August, indicating a slight reduction in muggy conditions. For a more detailed look at August weather, you can refer to Sanya weather in August.
In September, the weather is generally warmer, with average temperatures hovering around 28°C (82°F) and maximums reaching up to 32°C (89°F). However, it also comes with higher humidity at 82% and significant rainfall, accumulating 218 mm (8.6 in) over 24 days. In contrast, October sees slightly cooler temperatures, with an average of 26°C (80°F) and a maximum of 31°C (88°F). Although it remains humid at 80%, October experiences more rainfall, with precipitation rising to 242 mm (9.5 in) over 17 days. For more detailed information, you can check out Sanya weather in October.
September weather is characterized by higher temperatures, with a minimum of 24°C (76°F) and an average of 28°C (82°F), reaching a maximum of 32°C (89°F). It also experiences significant rainfall, totaling 218 mm (8.6 in) over 24 days, accompanied by high humidity at 82%. In contrast, November brings cooler temperatures, with a minimum of 18°C (65°F), an average of 24°C (76°F), and a maximum of 29°C (85°F). Precipitation decreases significantly to 71 mm (2.8 in) spread over just 6 days, and the humidity slightly drops to 76%. For more detailed information, you can check Sanya weather in November.
September and December present strikingly different weather patterns. In September, temperatures are notably warmer, with a minimum of 24°C (76°F) and daytime highs reaching up to 32°C (89°F), coupled with high humidity levels of 82%. This month experiences significant rainfall, averaging 218 mm (8.6 inches) over 24 days, making it a notably wet period. In contrast, December offers a much cooler climate, with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 28°C (82°F) and average humidity dropping to 75%. Precipitation is considerably less, totaling only 17 mm (0.7 inches) over just 3 days. For those interested in a more detailed analysis of December weather, please visit Sanya weather in December.
September in Sanya experiences warm temperatures that create a tropical ambiance, with averages hovering around 28°C (82°F). Unlike the preceding summer months, September sees an increase in precipitation, with rainfall spreading across 24 days and totaling 218 mm (8.6 in), contributing to the island's lush scenery. The humidity remains high at 82%, adding to the sultry feel. While beach lovers may find the weather slightly less inviting due to the frequent showers, the vibrant atmosphere and stunning landscapes make September a unique time to explore Sanya. For more detailed insights, visit Sanya Climate.