Last updated: August 21, 2025
In Tiantai, China, September offers a dynamic weather experience characterized by warm temperatures and frequent rain. The month sees maximum highs reaching up to 35°C (95°F) while averaging a comfortable 23°C (73°F). Nights can cool down to 16°C (60°F). With a total precipitation of 166 mm (6.5 in) over approximately 20 rainy days, travelers can expect a lush and vibrant landscape, although the humidity lingers around 84%, creating a slightly muggy atmosphere. Whether you're exploring the natural beauty or embracing local culture, September in Tiantai promises a blend of warmth and refreshing showers.
In September, Tiantai, China experiences a delightful transition toward autumn, with temperatures that reflect a comforting blend of summer warmth and the crispness of fall. The average temperature hovers around 23°C (73°F), providing a pleasant backdrop for outdoor activities. Mornings begin with a mild minimum of 16°C (60°F), perfect for layering, while the afternoons can still reach 35°C (95°F), reminiscent of late summer heat. This month showcases a consistent trend from the sizzling summer months, but as it progresses, a gradual tapering of the extreme highs becomes evident, signaling the approaching cooler months ahead. It's an ideal time to explore Tiantai's landscapes, where vibrant colors begin to emerge as summer gives way to autumn.
September in Tiantai, China, sees a significant precipitation of 166 mm (6.5 in), marking a slight decrease from the preceding months but still maintaining a robust amount of rain. With 20 rainy days, it continues the trend of the late summer months where wet conditions prevail, although this month is less intense than the peak observed in August. This decline in precipitation aligns with the seasonal transition towards autumn, as the region gradually shifts from its rainy season, which typically peaks during the summer. Yet, September's rainfall remains substantial, ensuring that the lush landscapes characteristic of Tiantai remain vibrant and alive as the weather begins to cool.
In September, Tiantai, China, experiences a notable shift in humidity, registering at 84%. This figure highlights a slight decrease from the peak of 87% seen in August, yet it remains significantly higher than the winter months, reflecting a humid and transitional late summer. The trend throughout the year illustrates a gradual rise in humidity from January's 72% to the summer's highs, peaking in July and August, before tapering off in the fall. As September comes to a close, the air retains a comfortable moisture level that sets the scene for the forthcoming changes of autumn.
In September, Tiantai, China, experiences a notable shift in the UV Index, measuring at 10, which falls into the very high exposure category. This indicates a slight decrease from the extreme levels observed throughout the summer months, which maintained a consistent UV Index of 12 from May to August. As autumn approaches, residents and visitors alike should remain vigilant, as the burn time is still relatively short at 15 minutes. Understanding these trends is crucial for planning outdoor activities safely. For more detailed insights, check out the Tiantai UV Index.
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In Tiantai, China, September basks in a generous 236 hours of sunshine, marking the tail end of a vibrant summer. This continues the upward trend established over the preceding months, peaking in July and August with 303 and 309 hours of glorious sunlight, respectively. While September experiences a slight decline compared to the summer's zenith, it still enjoys a rich array of sunny days, significantly outshining the winter months. The gradual decrease leading into October, which sees just 127 hours, hints at the coming transition to cooler, cloudier days. Overall, the sunshine hours reflect a seasonal ebb and flow, showcasing Tiantai's radiant summer charm before retreating into autumn's embrace.
In Tiantai, China, September stands out as a notably bright spot in the annual weather pattern, boasting a 40% chance of sunny weather. This marks a significant upswing compared to the preceding months, where sunny days are scarce, particularly in the peak of summer. While July and August offer only a 26% and 23% chance respectively, September's sunlit optimism suggests a refreshing transition into autumn. As the weather cools down with the approach of October, when the chance of sun dips to 15%, September offers a window of opportunity for those seeking to bask in the last rays of summer.
In September, Tiantai, China enjoys a generous daylight duration of 12 hours, slightly tapering off from the peak summer months. This marks a transition from the long, sunlit days of July and August, where daylight lingered at 13 hours. As the seasons shift into autumn, the daylight gradually decreases, paving the way for shorter days ahead. The trend throughout the year reveals a dynamic rhythm of light, with daylight increasing steadily from January through June, reaching its zenith in mid-summer, before gradually receding as the year winds down. This natural ebb and flow not only shapes the daily lives of Tiantai's residents but also enhances the beauty of the local landscape, casting a warm glow on the onset of fall.
In September, the winds in Tiantai, China, start to pick up, reaching an average speed of 1.7 m/s (4 mph), marking a subtle yet noticeable increase from the summer months. This gentle rise hints at the transition from the warm embrace of summer to the cooler embrace of autumn. Throughout the year, wind speeds hover around the 1.3 to 1.5 m/s range for most months, with a slight dip in July before stabilizing again. The increased breeziness in September not only invigorates the landscape but also signals a shift in the atmosphere, setting the stage for the changing seasons ahead. As autumn approaches, the crisp air carries with it the promise of change and renewal.
Weather in Tiantai varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Tiantai, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather conditions. In September, temperatures can range from a mild 16°C (60°F) at night to a scorching 35°C (95°F) during the day, accompanied by high humidity at 84% and significant rainfall of 166 mm (6.5 in) spread over 20 days. In contrast, January experiences much cooler weather, with minimum temperatures dipping to -2°C (28°F) and an average of only 7°C (45°F), while maximum temperatures reach a modest 16°C (60°F). This winter month sees less precipitation, around 52 mm (2.1 in) over 13 days, and lower humidity at 72%. For a detailed look at the weather patterns in January, check out Tiantai weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a mild 16°C (60°F) at night to a scorching 35°C (95°F) during the day, with an average of 23°C (73°F). This month sees considerable rainfall, with 166 mm (6.5 in) spread over 20 days, contributing to a high humidity level of 84%. In contrast, February experiences much cooler temperatures, with a nighttime low of 1°C (33°F) and daytime highs reaching 25°C (77°F), averaging around 9°C (48°F). Precipitation decreases significantly to 52 mm (2.1 in) over 14 days, and humidity drops to 76%. For those interested in more details about February conditions, please check Tiantai weather in February.
September and March present notably different weather patterns. In September, temperatures range from a mild 16°C (60°F) to a scorching 35°C (95°F), with an average of 23°C (73°F). The month sees significant rainfall, accumulating 166 mm (6.5 in) over 20 days, and the humidity remains high at 84%. In contrast, March experiences cooler temperatures, with a minimum of 5°C (41°F) and an average of 14°C (58°F), peaking at a comfortable 32°C (91°F). Precipitation is lighter, totaling 75 mm (3.0 in) over 17 days, and the humidity is slightly lower at 80%. These climatic differences highlight the transition from the warm, wet conditions of late summer to the brisk, more moderate weather typical of early spring. For more specific details, visit Tiantai weather in March.
September and April present contrasting weather patterns. In September, the temperatures range from a minimum of 16°C (60°F) to a maximum of 35°C (95°F), with an average of 23°C (73°F), making it noticeably warmer overall. The month experiences significant precipitation, totaling 166 mm (6.5 in) over 20 days, with high humidity levels at 84%. In contrast, April features cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 34°C (94°F), averaging only 18°C (64°F). It has less rainfall, totaling 105 mm (4.1 in) over 17 days, and a slightly lower humidity level of 77%. For more detailed information on April weather, visit Tiantai weather in April.
September and May exhibit notable differences in weather patterns despite both having similar maximum temperatures. September tends to be warmer overall, with average temperatures reaching up to 23°C (73°F) compared to May’s 21°C (70°F). However, May experiences slightly cooler minimum temperatures, starting at 10°C (50°F) versus September's 16°C (60°F). In terms of rainfall, September receives more precipitation, totaling 166 mm (6.5 in) over 20 days, while May has 135 mm (5.3 in) over 19 days, indicating a wetter month. Both months have high humidity, with September at 84% and May at 82%, contributing to a muggy feel in both instances. For a detailed look at May's weather in Tiantai, you can explore Tiantai weather in May.
In September, the weather features a slightly warmer average temperature of 23°C (73°F) compared to June's 24°C (75°F), with both months experiencing the same maximum temperature of 35°C (95°F). However, September records a higher total precipitation of 166 mm (6.5 in) over 20 days, while June sees 184 mm (7.2 in) across 19 days, indicating a slightly wetter June overall. Both months have comparable humidity levels, with September at 84% and June at 85%. For those interested in detailed conditions for June, please check Tiantai weather in June.
In comparing the weather of September and July, we see notable differences in temperature and precipitation patterns. September typically features a milder temperature range with a minimum of 16°C (60°F) and an average of 23°C (73°F), while July tends to be warmer, with minimum temperatures around 19°C (66°F) and an average of 27°C (81°F). Both months experience significant rainfall, with September receiving about 166 mm (6.5 in) and July slightly wetter at 190 mm (7.5 in), although both have precipitation on about 20 days. Humidity levels remain high throughout both months, with September at 84% and July at 85%. For more detailed insights about July's weather, you can check Tiantai weather in July.
In comparing the weather between August and September, it's clear that August is generally warmer and more humid. August boasts an average temperature of 27°C (81°F) with maximums reaching up to 38°C (100°F), while September sees a cooler average of 23°C (73°F) and a maximum of 35°C (95°F). Precipitation is also slightly higher in August, with 206 mm (8.1 in) compared to September's 166 mm (6.5 in), though September has nearly the same number of rainy days at 20 compared to August's 19. Humidity levels remain high in both months, slightly more so in August at 87%, compared to September's 84%. For more details on August weather conditions, refer to Tiantai weather in August.
In September, the weather is generally warmer with an average temperature of 23°C (73°F), ranging from a minimum of 16°C (60°F) to a maximum of 35°C (95°F). The month experiences significant precipitation, totaling 166 mm (6.5 in) over 20 days, contributing to a high humidity level of 84%.
In contrast, October brings a noticeable drop in temperatures, featuring an average of 17°C (63°F) and a minimum of 9°C (49°F). While the maximum temperature remains the same at 35°C (95°F), October sees slightly less rainfall at 140 mm (5.5 in) spread over 21 days, with humidity reducing to 81%. For more specific information about the weather in Tiantai during October, you can check Tiantai weather in October.
September weather is characterized by warmer temperatures, with averages around 23°C (73°F) and highs reaching up to 35°C (95°F), creating a typical late summer atmosphere. In contrast, November sees a significant drop in temperatures, where the average falls to 12°C (54°F) and highs peak at 25°C (77°F). Additionally, September experiences more precipitation, totaling 166 mm (6.5 in) across 20 days, while November significantly reduces this to 67 mm (2.6 in) over 14 days. Interestingly, humidity remains high in both months, recorded at 84% in September and slightly rising to 86% in November. For more detailed information on November weather, you can visit Tiantai weather in November.
Comparing the weather between September and December reveals significant changes. In September, temperatures range from a mild minimum of 16°C (60°F) to a scorching maximum of 35°C (95°F), with an average of 23°C (73°F). The month is quite wet, recording 166 mm (6.5 in) of precipitation over 20 days, coupled with high humidity levels at 84%. In contrast, December experiences much cooler temperatures, with a minimum of -1°C (31°F), an average of 8°C (46°F), and a maximum of 17°C (64°F). Precipitation decreases to 63 mm (2.5 in) over 16 days, and humidity slightly lowers to 81%. For more detailed information, visit Tiantai weather in December.
As September rolls in, Tiantai experiences a notable transition in its climate, characterized by a blend of warmth and humidity. With temperatures averaging a comfortable 23°C and reaching highs of 35°C, the month often feels warmer than the cooler autumn months that follow. However, it's also a time of increased rainfall, with precipitation occurring on about 20 days, making it one of the wetter months of the year. The humidity levels, soaring around 84%, contribute to a distinct tropical feel that sets September apart from the drier months ahead. For a deeper dive into what you can expect throughout the year, check out the full details on the Tiantai Climate.