Last updated: August 21, 2025
In Yomitan, Japan, September greets visitors with a warm and humid climate, featuring a maximum temperature of 30°C (86°F) and an average of 28°C (82°F), while nights offer a mild minimum of 24°C (75°F). The month sees significant rainfall, with a total of 237 mm (9.3 in) spread over 18 days, creating lush landscapes and vibrant greenery. With humidity levels averaging 82%, the weather can feel quite sticky, enhancing the tropical ambiance of this picturesque locale. September in Yomitan serves as a reminder of nature’s beauty, as it balances warmth and moisture, perfect for those seeking both adventure and relaxation.
September in Yomitan, Japan, marks a transition towards the cooler months, though temperatures still retain a warm tropical feel. With minimums averaging 24°C (75°F) and maximums reaching up to 30°C (86°F), the month showcases a blend of summer's lingering warmth and the beginning hints of autumn. The average temperature hovers at a comfortable 28°C (82°F), reflecting a slight dip from the sweltering heat of July and August. As the humidity gradually eases, September becomes an ideal time to enjoy outdoor activities while soaking in the vibrant local culture, all against a backdrop of scenic landscapes.
September in Yomitan, Japan, marks a notable increase in precipitation, with 237 mm (9.3 in) of rainfall spread over 18 days. This represents a significant rise compared to the drier summer months, highlighting a transition into the wetter season as the typhoon activity intensifies. The rainfall in September accounts for nearly 70% more than August, which received 187 mm (7.4 in). As the landscape absorbs the late-summer showers, the lush greenery of the region flourishes, showcasing the dynamic shift in weather patterns that come with the change of seasons. This month’s precipitation not only contributes to the natural beauty but also helps replenish local water sources, setting the stage for the upcoming months.
In September, Yomitan, Japan, experiences a comfortable humidity level of 82%, maintaining the trend of high moisture that characterizes the late summer months. Following the peak of 86% humidity in June and July, the levels slightly dip yet remain consistent with August's figures. As the transition into autumn approaches, the humidity gradually decreases, foreshadowing the lower levels expected in October. Overall, the pattern reveals a steady rise in humidity throughout the spring and summer, peaking in the heart of summer before gently ebbing into fall, creating a unique and humid climatic experience in Yomitan.
In Yomitan, Japan, the September UV Index remains notably high, registering at 12 in the extreme exposure category, with a burn time of just 10 minutes. This trend aligns with the consistently elevated UV levels throughout the summer months, where the index peaked at 13 from May to August. September signals a slight decrease, but the UV risk remains significant, emphasizing the need for sun protection strategies. It’s important to stay vigilant, as the index will further decline in October, dropping to 9, marking a return to the very high category. For a deeper dive into local UV levels, visit Yomitan UV Index.
UV Risk Categories
As the summer heat of August gives way to the milder embrace of September, Yomitan, Japan, continues to bask in an impressive 295 hours of sunshine. This month reflects a vibrant pattern of sunlight that peaks during the summer, with July and August each surpassing 300 hours, while September still boasts abundant rays, inviting outdoor activities and exploration. The progression from lush May, with its 305 sunny hours, to the slightly reduced but still generous September figures highlights the gradual transition into autumn. As days begin to shorten, the warmth of September sunshine remains a testament to the area's delightful climate, bridging the gap between the long, sunlit days of summer and the cooler months ahead.
In Yomitan, Japan, September shines as a promising month for sun seekers, boasting a 61% chance of sunny weather—the highest of the year. This notable increase comes after a dip in sunshine during the rainy summer months, particularly in June, which sees a mere 9% likelihood of sun. Following August's moderate 40%, September marks a delightful transition into autumn, where clearer skies and warmer temperatures invite outdoor activities. As the year progresses into October with a still favorable 50% chance, September serves as a bridge to more pleasant weather, making it an ideal time to explore the stunning coastal scenery of Yomitan.
As September arrives in Yomitan, Japan, the daylight hours start to wane, offering a notable transition from the vibrant summer months. This month boasts 12 hours of sunlight, a mild reduction from the 13 hours enjoyed consistently from June through August. The easing daylight serves as a gentle reminder of the approaching autumn, where days gradually shorten. Following September, daylight continues to diminish, slipping to 11 hours in October, before settling at a more subdued 10 hours in both November and December. This gradual shift highlights a rhythm of nature, where the balance between day and night continuously evolves, inviting residents and visitors alike to embrace the beauty of each season's unique offerings.
As September rolls into Yomitan, Japan, the average wind speed gently drops to 5.5 m/s (12 mph), marking the calmest month of the year. This subtle decrease from August reflects a broader trend as the summer heat gives way to the cooler embrace of autumn. Winds typically reach their peak in the early months of the year, with January averaging 8.2 m/s (18 mph) and gradually tapering off until hitting September's lows. However, tranquility is short-lived, as October ushers back a brisk 7.8 m/s (18 mph), promising a seasonal return to invigorating breezes. With cooler weather approaching, September’s winds serve as a gentle reminder of nature's rhythm, creating a perfect backdrop for reflection and renewal in this idyllic coastal town.
Weather in Yomitan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Yomitan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is typically warm and humid, with average temperatures soaring to around 28°C (82°F) and nighttime lows of 24°C (75°F). This month also brings significant rainfall, averaging 237 mm (9.3 in) over 18 days, creating a humid environment with a relative humidity of 82%. In contrast, January experiences much cooler temperatures, with daytime highs reaching up to 24°C (75°F) and lows dropping to 12°C (53°F). Precipitation decreases significantly to 99 mm (3.9 in) over just 11 days, and the humidity level also drops to a more comfortable 71%. For more specific details about weather patterns during this month, check Yomitan weather in January.
In comparing September and February weather, September features significantly warmer temperatures, with minimums reaching 24°C (75°F) and maximums soaring to 30°C (86°F), contrasted with February's cooler range of 12°C (53°F) to 24°C (75°F). September is also marked by higher humidity levels at 82% and much more precipitation, totaling 237 mm (9.3 in) over 18 days, while February experiences a drier climate with only 98 mm (3.9 in) over 13 days, accompanied by a lower humidity of 71%. For more details on February weather in Yomitan, you can check Yomitan weather in February.
September and March present contrasting weather conditions, highlighting the transition between seasons. In September, temperatures typically range from a warm minimum of 24°C (75°F) to an average of 28°C (82°F), peaking at 30°C (86°F). The month is also characterized by high humidity levels at 82% and significant rainfall, with 237 mm (9.3 in) spread over 18 days. In stark contrast, March offers much cooler temperatures, with a minimum of 14°C (57°F), an average of 20°C (68°F), and a maximum of 24°C (76°F). Precipitation is notably lower at 109 mm (4.3 in) over just 12 days, accompanied by a slightly lower humidity of 76%. For more detailed information about the weather in March, you can check out Yomitan weather in March.
September and April present distinct contrasts in weather conditions. In September, temperatures are notably warmer, with a minimum of 24°C (75°F) and an average of 28°C (82°F), peaking at a maximum of 30°C (86°F). This month also experiences significant rainfall, with 237 mm (9.3 in) of precipitation spread over 18 days, contributing to high humidity levels of 82%. In contrast, April offers a cooler climate, with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 26°C (79°F), averaging around 21°C (70°F). The precipitation in April is lower at 146 mm (5.7 in) over 12 days, but humidity remains consistent at 82%. To explore more details about the weather in April, visit Yomitan weather in April.
In comparing the weather of September and May, September tends to be warmer, featuring a minimum temperature of 24°C (75°F) and an average of 28°C (82°F), peaking at 30°C (86°F). In contrast, May is cooler, with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 28°C (82°F) and an average of 24°C (75°F). Precipitation levels are slightly higher in September, with 237 mm (9.3 in) over 18 days, compared to May's 213 mm (8.4 in) over 12 days. Humidity is also marginally elevated in May, at 84%, compared to September's 82%. For more detailed information on weather conditions in May, you can check Yomitan weather in May.
In comparing the weather of September and June, September tends to be slightly warmer, with average temperatures reaching 28°C (82°F) compared to June's 26°C (80°F). However, June experiences more precipitation, totaling 328 mm (12.9 in) over 20 days, while September receives 237 mm (9.3 in) across 18 days. Additionally, humidity levels are slightly higher in June at 86%, contrasted with September's 82%. For further details on June weather in Yomitan, you can refer to this link: Yomitan weather in June.
In comparing the weather between September and July, we find that both months experience similar temperatures, with July having slightly higher minimum temperatures of 26°C (78°F) compared to September's 24°C (75°F). The average temperatures remain consistent, hovering around 28°C (82°F) to 30°C (86°F). However, September sees significantly higher precipitation at 237 mm (9.3 in) over 18 days, compared to July's 180 mm (7.1 in) across 12 days. Moreover, humidity levels are slightly lower in September at 82%, while July maintains a higher humidity average of 86%. For more detailed information, you can check Yomitan weather in July.
In comparing the weather between September and August, September experiences slightly cooler temperatures, with average highs reaching 30°C (86°F) compared to 30°C (87°F) in August. However, the minimum temperature in September is a bit lower at 24°C (75°F), while August starts higher at 26°C (78°F). Precipitation also increases in September, with 237 mm (9.3 in) falling over 18 days, compared to 187 mm (7.4 in) over 16 days in August. Both months share the same humidity level of 82%, contributing to a consistently warm and humid atmosphere. For a detailed breakdown of August's weather, check out Yomitan weather in August.
In September, the weather is typically warmer and more humid, with average temperatures around 28°C (82°F) and a maximum reaching up to 30°C (86°F). This month sees significant rainfall, accumulating to about 237 mm (9.3 in) over 18 days, resulting in a humidity level of 82%. Conversely, October marks a slight decline in temperature, with averages settling at 26°C (78°F) and a maximum of 29°C (84°F). Precipitation also decreases noticeably to 149 mm (5.8 in) over 12 days, while humidity levels drop slightly to 80%. For a detailed look at the weather in Yomitan during October, you can check out Yomitan weather in October.
The weather in September is significantly warmer and wetter compared to November. With minimum temperatures around 24°C (75°F) and an average of 28°C (82°F), September experiences a peak maximum temperature of 30°C (86°F). In contrast, November brings cooler temperatures, with a minimum of 19°C (66°F) and an average of 23°C (74°F), peaking at 26°C (80°F). Additionally, September sees a much higher rainfall total of 237 mm (9.3 in) over 18 days, while November receives just 106 mm (4.2 in) over 11 days. The humidity is slightly lower in November at 79%, compared to September's 82%. For more details on the weather conditions during this month, you can check Yomitan weather in November.
September weather is characterized by warm temperatures, with a minimum of 24°C (75°F) and an average of 28°C (82°F), reaching a maximum of 30°C (86°F). The month sees significant rainfall, with 237 mm (9.3 in) of precipitation over 18 days, contributing to high humidity levels of 82%. In contrast, December brings cooler temperatures, with a minimum of 14°C (57°F) and an average of 20°C (68°F), peaking at 25°C (78°F). Precipitation in December is lower at 162 mm (6.4 in) spread over 15 days, and humidity levels decrease to 75%. For more information on December weather, you can visit Yomitan weather in December.
As September unfolds in Yomitan, the transition toward cooler autumn temperatures becomes evident, offering a pleasant reprieve from the sweltering heat of summer. Characterized by mild days and humid evenings, this month often brings a bit more rainfall compared to the preceding months, with showers gracing about half of the days. The end of the summer vacation season, coupled with the vibrant foliage beginning to appear, makes September a unique time to experience Yomitan's natural beauty. For more details on the climate, check out Yomitan Climate.