September Weather in Asuka, Japan

Last updated: August 21, 2025

September in Asuka, Japan showcases a striking blend of temperatures, where daily highs can reach up to 36°C (97°F) while averaging a comfortable 24°C (75°F). The month experiences a notable dip in the evenings, with temperatures plummeting to a refreshing 12°C (53°F). Rainfall is an integral aspect of this month, with 181 mm (7.1 in) of precipitation spread across 16 days, contributing to the region's lush landscapes. Coupled with a humidity level of 87%, September in Asuka is a vibrant yet humid period, perfect for those who appreciate a lively atmosphere.

September Temperature in Asuka

In September, Asuka, Japan, experiences a delightful shift in temperatures as summer gradually gives way to autumn. With a minimum temperature of 12°C (53°F) and an average of 24°C (75°F), the weather remains comfortably warm, peaking at a maximum of 36°C (97°F) during the day. This blend of warm days and cooler nights creates a perfect opportunity for outdoor activities, such as hiking through the breathtaking historical sites of the region. As the sun starts to set earlier, the landscape is painted in vibrant hues, signaling the onset of fall while still retaining the warmth of summer. Overall, September in Asuka is a harmonious transition, offering visitors an inviting climate and stunning natural beauty.

September Weather in Asuka: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Asuka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Asuka, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec394148576672798275645343
Data source: Temperature data for Asuka generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Asuka

In September, Asuka experiences a notable shift in its precipitation patterns, accumulating 181 mm (7.1 in) of rainfall over 16 days. This marks a slight decline from the heavy rains of July and August, yet still showcases significant moisture before the autumn months set in. Throughout the late summer and early fall, precipitation remains robust, reflecting the region's transition from the intense summer rains to a more distributed autumnal pattern. Comparatively, September's rainfall is less than the preceding months but significantly more than the drier late-year averages observed in November and December. This gradual descent in rainfall foreshadows the approaching dry season, allowing Asuka to savor its lush landscapes a little longer before the colder months arrive.

September Precipitation Trends in Asuka

The chart displays monthly precipitation patterns in Asuka, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Asuka, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec60731291311571922901741812685170
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Asuka

In Asuka, Japan, September brings a notable shift in humidity, with levels at 87%. This represents a slight decline from the sweltering heights of 93% in July and 91% in August, signaling a gradual exit from the intensely humid summer months. The stabilization of humidity in September is characteristic as the region transitions into autumn; however, it remains among the higher figures of the year. Notably, the trend indicates a peak during the heart of summer, tapering off as the cooler fall weather approaches, yet still retaining a notable level of moisture in the air. This lingering humidity adds a unique softness to the landscape, blending the warmth of summer with the crispness of autumn.

September Average Humidity in Asuka

This chart illustrates the average monthly humidity levels in Asuka, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Asuka is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%74%76%83%87%93%91%87%85%83%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Asuka

In September, Asuka experiences a very high UV Index of 10, indicating significant sun exposure risks. As the summer months wind down, this slight decrease from the extreme levels of July and August still necessitates caution, with a burn time of just 15 minutes for unprotected skin. This trend of elevated UV levels persists throughout the year, peaking in the height of summer, yet remains relatively high in early autumn. As you plan your outdoor activities, it's crucial to prioritize sun safety, even in September. For detailed insights into UV exposure in Asuka, check Asuka UV Index.

Maximum UV Index Levels in Asuka for September

The chart shows the monthly maximum UV Index (UVI) for Asuka in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Asuka typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111111121210764
Data source: Asuka September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Asuka

As September sweeps into Asuka, Japan, the sun continues to shine with a robust 247 hours of daylight, marking a slight dip from the summer peak of 312 hours in August. This transition reflects a gentle shift towards autumn, as daylight hours consistently decrease from the vibrant highs of summer. Notably, September’s sunshine is still significantly higher than the winter months, illustrating a lingering warmth in the air. As the year progresses, this pattern showcases a gradual cooling, yet the sun remains a cherished companion, lighting up the beginning of fall in this serene Japanese town.

Monthly Sunshine Duration in Asuka: September Highlighted

The September sunshine duration represents the total number of hours Asuka experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec189h234h267h282h293h270h264h312h247h240h240h226h
Data source: Asuka September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Asuka During September

In Asuka, Japan, September presents a modest 28% chance of sunny weather, aligning with the city's trend of lower probabilities for clear skies during the summer months. As the heat of August fades, the likelihood of sunshine doesn't significantly rebound, remaining consistent with the previous two months. This marks September as one of the less favorable times for sunshine, especially when compared to the brighter prospects of October and November, both boasting over 50% chances of clear weather. Overall, while the allure of early autumn begins to set in, travelers and locals alike might want to keep an eye on the skies for September's fleeting rays.

Percentage of Sunny Days in September in Asuka

The chart illustrates the percentage of sunny days in Asuka throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Asuka experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec48%53%42%46%29%23%33%28%28%52%53%58%
Data source: Asuka September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Asuka in September

As September arrives in Asuka, Japan, the daylight duration begins its gradual descent, offering 12 hours of light. This marks a shift from the peak summer months of June and July, which boast 14 hours of daylight, creating long, sun-drenched days ideal for outdoor activities. As autumn approaches, daylight diminishes subtly through September, hinting at the cooler months ahead. This transition is a natural progression from the lively brightness of summer, leading into October's 11 hours of daylight and November's 10 hours, inviting a reflective mood as nature shifts into its fall attire. Enjoy the lingering warmth of early autumn in September while it lasts, as the days gently shorten in Asuka.

Average Daylight Hours in Asuka for September

The chart illustrates the variation in daylight duration in Asuka throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 6m10h 55m11h 58m13h 3m13h 57m14h 25m14h 11m13h 23m12h 21m11h 17m10h 20m9h 52m
Data source: Asuka daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Asuka

As September arrives in Asuka, Japan, a gentle shift in the seasonal breeze is evident, with average wind speeds dipping to 1.8 m/s (4 mph). This trend marks a softening from the summer months, where the winds were slightly stronger, peaking in early summer. The mild winds create a serene atmosphere, perfectly complementing the vibrant hues of autumn as nature begins its transition. With September’s breezy calmness, the village invites both residents and visitors to savor the tranquil beauty as the summer heat wanes and the coolness of fall begins to embrace the landscape.

Average September Wind Speed in Asuka

The chart displays monthly wind speed patterns in Asuka, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.82.92.42.52.51.61.82.21.8 m/s1.92.32.7
Data source: Asuka September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Asuka Compares to Other Months

Weather in Asuka varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Asuka, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January present stark contrasts in weather. In September, temperatures soar with an average of 24°C (75°F) and highs reaching up to 36°C (97°F), accompanied by high humidity at 87%. This month also sees significant rainfall, with 181 mm (7.1 in) of precipitation spread over 16 days. In contrast, January is considerably cooler, featuring a maximum temperature of 16°C (61°F) and an average of just 4°C (40°F), with lows plummeting to -6°C (22°F). The precipitation amounts are lower in January, with only 60 mm (2.4 in) over 9 days, and humidity remains relatively high at 82%. For more detailed insights into Asuka's January weather, you can check the link: Asuka weather in January.

September and February present stark contrasts in weather conditions. In September, temperatures range from a mild 12°C (53°F) at night to a scorching 36°C (97°F) during the day, averaging around 24°C (75°F). This month also experiences significant rainfall, with about 181 mm (7.1 in) of precipitation over 16 days and a high humidity of 87%. In contrast, February features much cooler temperatures, with nighttime lows plunging down to -4°C (24°F) and daytime maximums reaching just 19°C (67°F), averaging around 5°C (41°F). The precipitation diminishes to 73 mm (2.9 in) over 8 days, and humidity levels are relatively lower at 79%. For more details on February’s weather, you can visit Asuka weather in February.

September and March offer stark contrasts in weather. September features warmer temperatures, with a minimum of 12°C (53°F) and an average of 24°C (75°F), peaking at 36°C (97°F), while March experiences cooler conditions, starting at -2°C (29°F) and averaging around 9°C (49°F), with a maximum of 21°C (71°F). Additionally, September sees higher humidity at 87% and more precipitation, totaling 181 mm (7.1 in) over 16 days, compared to March, which has 128 mm (5.1 in) spread over 12 days and lower humidity at 74%. For more detailed information, check out Asuka weather in March.

In comparing the weather of September and April, September tends to be significantly warmer, with average temperatures reaching 24°C (75°F) and maximums soaring up to 36°C (97°F). In contrast, April's temperatures are much cooler, averaging around 14°C (57°F) with a maximum of 26°C (79°F). Furthermore, September experiences more precipitation, totaling 181 mm (7.1 in) over 16 days, while April has a milder 131 mm (5.1 in) spread over just 10 days. Humidity is also higher in September at 87%, compared to April's more comfortable 76%. For a more detailed overview of weather conditions in April, you can visit Asuka weather in April.

September and May present contrasting weather patterns, with September experiencing warmer temperatures and higher humidity. In September, the average temperature peaks at 24°C (75°F), with maximum highs reaching up to 36°C (97°F) and minimums around 12°C (53°F). This month also sees more precipitation, with 181 mm (7.1 in) over 16 days, resulting in a humidity level of 87%.

In contrast, May's weather is milder, with an average temperature of 19°C (66°F) and maximum temperatures hitting 31°C (88°F), while the minimum temperature drops to 4°C (40°F). Although May receives slightly less rain—157 mm (6.2 in) over just 10 days—it maintains a lower humidity level of 83%. For more details, you can check Asuka weather in May.

When comparing the weather in September and June, both months exhibit high humidity levels at 87%, creating a similarly muggy atmosphere. However, September tends to be hotter, with average temperatures around 24°C (75°F) compared to June's average of 22°C (72°F). September also experiences more extreme highs, reaching up to 36°C (97°F), while June peaks at 31°C (89°F). Additionally, precipitation is almost on par, with September receiving 181 mm (7.1 in) over 16 days and June slightly higher at 192 mm (7.6 in) over 15 days. For a closer look at June weather specifics, check out Asuka weather in June.

When comparing the weather of September and July, September tends to be slightly cooler with average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 36°C (97°F), while July offers warmer temperatures, averaging from a minimum of 19°C (66°F) to a maximum of 35°C (96°F). In terms of precipitation, July sees more rainfall, with 290 mm (11.4 in) over 21 days compared to September's 181 mm (7.1 in) spread over 16 days. Additionally, humidity levels are higher in July at 93%, compared to September's 87%, making July feel more sultry. For more detailed information, you can check Asuka weather in July.

In comparing the weather between August and September, September sees slightly lower minimum temperatures, averaging at 12°C compared to August's 17°C. Despite having the same maximum temperature of 36°C, September's average temperature is cooler at 24°C compared to August's 28°C. Both months experience similar levels of precipitation, with September recording 181 mm over 16 days and August at 174 mm over 15 days. Humidity remains high in both months, though it is marginally lower in September at 87% compared to 91% in August. For more detailed insights, you can check Asuka weather in August.

September typically experiences warmer temperatures, with averages hovering around 24°C (75°F) and maximums reaching up to 36°C (97°F). The month is also characterized by high humidity at 87% and considerable rainfall, totaling 181 mm (7.1 in) over 16 days. In contrast, October marks a significant drop in temperature, with an average of 18°C (64°F) and maximums of 30°C (87°F). Although it remains humid at 85%, October experiences even more precipitation, with 268 mm (10.6 in) falling over just 13 days. For a detailed look at Asuka weather in October, you can explore the specific conditions you might expect during this month.

September and November present strikingly different weather conditions. In September, temperatures range from a minimum of 12°C (53°F) to a maximum of 36°C (97°F), with an average temperature of 24°C (75°F). The month is marked by significant rainfall, totaling 181 mm (7.1 in) over 16 days, and high humidity at 87%. In contrast, November sees much cooler temperatures, with a low of -1°C (30°F) and a high of 25°C (76°F), averaging at 12°C (53°F). Precipitation decreases sharply to 51 mm (2.0 in) across just 7 days, and humidity remains slightly lower at 83%. For more details on weather patterns during this time, check out Asuka weather in November.

September and December present stark contrasts in weather characteristics. In September, temperatures range from a minimum of 12°C (53°F) to a scorching maximum of 36°C (97°F), with an average of 24°C (75°F). This month is also marked by high humidity at 87% and significant rainfall, totaling 181 mm (7.1 in) over 16 days. In contrast, December features much cooler weather, with temperatures dipping to a minimum of -3°C (26°F) and reaching a maximum of 22°C (72°F), averaging just 6°C (44°F). Precipitation decreases substantially to 70 mm (2.8 in) across 8 days, and humidity also drops slightly to 83%. For more insights on December weather, you can check Asuka weather in December.

Compare Asuka's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Asuka

As September rolls into Asuka, the weather undergoes a noticeable transformation, blending the lingering warmth of summer with the onset of autumn. This month is characterized by high humidity levels, creating a muggy atmosphere that often feels heavier than other months. With average temperatures gracing a comfortable 24°C, days may still soar to a sweltering 36°C, making it a transitional time where summer still asserts its presence. However, the increased precipitation—spanning over 16 days—marks a shift from the drier summer months, nourishing the landscape as it prepares for the cooler days ahead. For a deeper dive into the climatic nuances of this enchanting region, explore Asuka Climate.