Last updated: August 21, 2025
Experience the September climate of Penghu, China, where temperatures range from a balmy 14°C (57°F) at night to a sizzling 38°C (100°F) during the day. On average, you can expect a comfortable 25°C (77°F), ideal for outdoor activities. While the island does see about 114 mm (4.5 in) of rainfall over approximately 14 days, the 70% humidity enhances the tropical feel, making evenings particularly pleasant. Whether you’re basking in the sun or exploring the vibrant landscapes, September in Penghu promises a unique blend of warmth and character.
In September, temperatures in Penghu, China begin to showcase a shift toward warmer days, with lows averaging around 14°C (57°F) and averages reaching 25°C (77°F). The month often heralds the peak heat, featuring maximums that can soar to an impressive 38°C (100°F), marking it as one of the hottest periods of the year. This warm trend reflects a gradual transition from the summer heat of July and August, where minimums remained consistently around 21°C (69°F). As September progresses, the refreshing evenings provide a stark contrast to the daytime warmth, inviting a pleasant balance that characterizes the approaching autumn months.
In September, Penghu experiences a notable shift in precipitation patterns, with 114 mm (4.5 in) of rainfall spread over 14 days. This marks a decrease from the wettest months of June and August, yet it still represents a consistent level of moisture as the summer winds down. Following the peak rainfall of May and August, which saw 229 mm and 282 mm respectively, September's precipitation continues the trend of significant rainfall while hinting at a gradual transition into the drier months ahead. As the island moves into October, where only 43 mm (1.7 in) is expected, the lingering humidity from September serves as a final farewell to the wet season.
In September, Penghu, China, experiences a noticeable dip in humidity, averaging around 70%, the lowest level for the year. This decline follows a summer of elevated moisture, peaking in May at 85% and remaining relatively high throughout the hottest months. As the seasons transition from the sweltering summer heat, September marks the beginning of a gradual decrease in humidity, preparing residents and visitors alike for a shift towards milder conditions. Interestingly, following this September low, humidity begins to rise again in October, settling at a more consistent level of 73%. This rhythmic fluctuation highlights the region's dynamic climate patterns, making it a fascinating destination for those who appreciate diverse weather experiences.
In September, Penghu experiences a UV Index of 12, categorized as extreme, which signals a continued trend of high ultraviolet radiation seen throughout the summer months. This level of exposure necessitates a burn time of just 10 minutes, making sun protection essential for outdoor activities. Following the peak summer months, which consistently recorded a UV Index of 13, September marks a slight dip yet remains perilously high, reminding residents and visitors alike to remain vigilant against the sun's rays. As autumn approaches, the UV Index is expected to gradually decrease, eventually leading into October’s 10. For ongoing updates and information, check out Penghu UV Index.
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As September arrives in Penghu, China, residents and visitors alike can bask in an impressive 279 hours of sunshine, marking a shift from the sweltering peak of summer. Following the high of 306 hours in July and a close 296 hours in August, September maintains a robust glow, solidifying itself as a favorable transition into the cooler months. This trend of abundant sunlight, especially notable during the warmer months from May through September, showcases the vibrant allure of the region, making it an ideal time for outdoor exploration and relaxation. As the year progresses into October with a slight dip to 248 hours, September’s sunshine offers a splendid farewell to summer while gently ushering in the fall season.
In September, Penghu experiences a 47% chance of sunny weather, providing a refreshing respite from the intense rain of the summer months. As we transition from the sweltering heat of July and August, where sunny days plummet to 24% and 14% respectively, September offers an encouraging uptick in sunshine. This upward trend continues into October, making September an appealing time for outdoor activities before the cooler and slightly more overcast months set in. As the year progresses, the likelihood of enjoying pleasant, sunny days in Penghu reflects a gradual recovery from the severe climate of mid-summer, offering visitors a delightful window for exploration and relaxation.
In September, Penghu, China enjoys a pleasant 12 hours of daylight, continuing the trend from the vibrant summer months. This consistent daylight duration reflects a gradual transition from the longer days of June, July, and August, which boast 13 hours each. As autumn approaches, the sun begins to set earlier, hinting at the shorter days ahead in October and November. Nevertheless, September maintains a balance, offering ample daylight for outdoor activities and exploration before the cooler, darker months set in. The shift from summer's brightness to autumn's gentle light is a beautiful reminder of nature's cyclical rhythm.
In September in Penghu, China, the winds begin to soften, with an average speed of just 1.2 m/s (3 mph), marking the calmest month of the year. This gentle breeze follows a trend seen through the summer, where the winds typically hover between 1.4 m/s and 1.7 m/s. As autumn approaches, this decrease in wind speed hints at a serene transition, with October then bringing a slight uptick to 2.0 m/s (4 mph). The shifting patterns reveal that while the summer months can invite a bit more wind, September's tranquility sets the stage for a peaceful autumn on this beautiful archipelago.
Weather in Penghu varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Penghu, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by warm temperatures, with a minimum of 14°C (57°F) and an average of 25°C (77°F), peaking at a scorching 38°C (100°F). This month also sees a significant amount of rainfall, totaling 114 mm (4.5 in) over 14 days, and a humidity level of 70%, making it feel quite muggy. In contrast, January presents a starkly different climate, with temperatures dropping to a minimum of -3°C (27°F) and an average of 11°C (53°F), reaching a maximum of 27°C (81°F). This month is much drier, with only 33 mm (1.3 in) of precipitation over 5 days, alongside a slightly higher humidity of 73%. For a closer look at January weather specifics, check out Penghu weather in January.
In September, the weather features warmer temperatures, with a minimum of 14°C (57°F) and an average high of 25°C (77°F), peaking at 38°C (100°F), while experiencing significant precipitation of 114 mm (4.5 inches) over 14 days. On the other hand, February presents a stark contrast, with cooler temperatures that range from a minimum of -4°C (26°F) to an average of 12°C (53°F), reaching a maximum of 27°C (81°F). Precipitation in February is less intense, totaling 66 mm (2.6 inches) over just 8 days, and the humidity remains relatively high at 73%. For more details, you can check out the Penghu weather in February.
September typically showcases warmer weather, with temperatures ranging from a minimum of 14°C (57°F) to a high of 38°C (100°F), and an average temperature of 25°C (77°F). In contrast, March experiences much cooler conditions, with temperatures starting at 0°C (33°F), peaking at 30°C (86°F), and an average temperature of 15°C (60°F). Both months see significant precipitation, with September receiving 114 mm (4.5 in) over 14 days and March slightly higher at 134 mm (5.3 in) over 15 days. Humidity levels are also notable; September has a humidity of 70%, while March is slightly more humid at 80%. For more detailed information about March weather, you can visit Penghu weather in March.
September and April exhibit distinct weather patterns, reflecting the transition from summer to autumn and spring to summer, respectively. In September, temperatures range from a minimum of 14°C (57°F) to a maximum of 38°C (100°F), creating a warm average of 25°C (77°F). The month sees considerable precipitation, with about 114 mm (4.5 inches) over 14 days and a humidity level of 70%. In contrast, April experiences milder conditions, with temperatures ranging from a cooler 4°C (39°F) to a warmer 32°C (89°F) and an average of 18°C (65°F). It has a slightly lower total precipitation of 106 mm (4.2 inches) over the same number of rainy days, but a higher humidity level at 81%. For more details on April weather in a specific region, check out Penghu weather in April.
In comparing the weather between September and May, there are notable contrasts in temperature and precipitation. September typically showcases warmer temperatures, with averages around 25°C (77°F) and a maximum of 38°C (100°F), alongside a relatively moderate humidity level of 70%. In contrast, May experiences cooler temperatures, with averages of 22°C (72°F) and a maximum of 35°C (95°F), but higher humidity at 85%. Additionally, May sees more rainfall, totaling 229 mm (9.0 in) over 21 days, compared to September's 114 mm (4.5 in) over just 14 days. For more detailed insights, you can check Penghu weather in May.
In comparing the weather of September and June, both months experience an average temperature of 25°C (77°F), making them comfortable in terms of warmth. However, September showcases a wider temperature range with a minimum of 14°C (57°F) and a maximum of 38°C (100°F), while June has a slightly higher minimum of 16°C (62°F) and a cap of 35°C (95°F). Precipitation differs significantly, with September receiving 114 mm (4.5 in) over 14 days, considerably less than June's 295 mm (11.6 in) across 21 days. Additionally, June tends to be more humid at 81% compared to September's 70%. For a detailed look at June weather in Penghu, you can visit Penghu weather in June.
In comparing the weather between July and September, we find notable differences in temperature, precipitation, and humidity levels. July typically has a milder range of temperatures with a minimum of 21°C (69°F) and a maximum of 35°C (96°F), while September offers a broader temperature range, with a minimum of 14°C (57°F) and a peak reaching up to 38°C (100°F). Overall, September's average temperature is slightly warmer at 25°C (77°F) compared to July’s average of 26°C (80°F).
However, July experiences higher humidity levels at 84%, compared to September's 70%, making July feel noticeably more humid. Additionally, precipitation is more intense in July, with 159 mm (6.3 in) over 16 days, compared to September's 114 mm (4.5 in) over 14 days. For more detailed information, you can refer to Penghu weather in July.
In comparing the weather between August and September, September offers slightly cooler temperatures, with a minimum of 14°C (57°F) and an average of 25°C (77°F), compared to August's minimum of 21°C (69°F) and average of 26°C (79°F). However, September experiences a higher maximum temperature of 38°C (100°F), which is notably warmer than August's peak of 34°C (94°F). Rainfall is significantly less in September, with 114 mm (4.5 in) over 14 days, while August is much wetter, receiving 282 mm (11.1 in) over 21 days. Additionally, humidity levels are higher in August at 82%, compared to September's 70%. For more detailed insights into the weather in August, you can visit Penghu weather in August.
September and October showcase a noticeable shift in weather patterns. In September, temperatures range from a minimum of 14°C (57°F) to a maximum of 38°C (100°F), with an average of 25°C (77°F). This month is characterized by higher humidity at 70% and significant rainfall totaling 114 mm (4.5 in) over 14 days. In contrast, October brings cooler conditions, with temperatures dropping to a minimum of 9°C (49°F) and a maximum of 34°C (94°F), averaging 21°C (69°F). Precipitation significantly decreases to 43 mm (1.7 in) over just 7 days, while humidity slightly rises to 73%. For more details on October's weather, you can visit Penghu weather in October.
September and November showcase a significant transition in weather patterns. In September, temperatures range from a minimum of 14°C (57°F) to a scorching maximum of 38°C (100°F), with an average of 25°C (77°F). The month experiences considerable precipitation, totaling 114 mm (4.5 in) over 14 days, and humidity hovers around 70%. In contrast, November offers a much cooler climate, with temperatures dipping to a minimum of 4°C (40°F) and peaking at 28°C (84°F), resulting in an average of 17°C (62°F). Rain is less frequent, with only 47 mm (1.9 in) of precipitation over just 7 days, while humidity rises slightly to 77%. For a closer look at what to expect, check out Penghu weather in November.
In September, the weather is significantly warmer, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 38°C (100°F) and an average of 25°C (77°F). This month also experiences considerable rainfall, totaling 114 mm (4.5 in) over approximately 14 days, along with a humidity level around 70%. In stark contrast, December sees much cooler temperatures, with a minimum of -1°C (31°F), an average of 12°C (54°F), and a maximum of 27°C (81°F). Precipitation drops dramatically to 25 mm (1.0 in) over just 5 days, and humidity increases slightly to 79%. For more details on December weather specifics, you can check Penghu weather in December.
As summer transitions into autumn, September in Penghu brings a unique blend of warmth and moisture. With an average temperature around a comfortable 25°C, it's noticeably cooler than the peak summer months, yet still capable of reaching highs of 38°C. The month is characterized by frequent rainfall, with precipitation recorded on 14 days, contributing to an overall humidity of 70%. While the island retains its tropical charm, visitors can expect a refreshing shift from the sweltering summer heat, making September an intriguing time to explore. For a deeper understanding of what to expect throughout the year, visit Penghu Climate.