Last updated: August 21, 2025
In September, Uwajima welcomes a blend of warm temperatures and notable rainfall. With a maximum temperature soaring to 33°C (92°F) and a comfortable average of 25°C (77°F), the month provides a transition from summer heat to the cooler autumn. Nighttime temperatures can dip to a minimum of 16°C (61°F), offering a refreshing respite. Visitors should prepare for significant precipitation, averaging 192 mm (7.6 in) over approximately 15 days, contributing to the region's lush landscapes. Combined with an average humidity of 84%, September in Uwajima is a month of vibrant weather, making it an ideal time for visitors to experience the rich natural beauty of this charming Japanese city.
In September, Uwajima, Japan, experiences a delightful transition as summer gradually gives way to fall. The minimum temperature settles at a comfortable 16°C (61°F), while the average hovers around 25°C (77°F), peaking at a warm 33°C (92°F). This month marks a notable drop from the sweltering peaks of August, yet it still retains a pleasant warmth, perfect for outdoor activities and enjoying the lingering sunshine. As September unfolds, the shift in temperatures indicates the onset of autumn, hinting at cooler days ahead while still encapsulating the enjoyable warmth characteristic of late summer.
In September, Uwajima experiences a notable shift in precipitation, receiving approximately 192 mm (7.6 in) of rain over 15 days. This marks a continuation of the wet season, mirroring the rainfall seen in August and contributing to the overall intense summer precipitation the region is known for. As the month progresses, the frequent rain offers a lush backdrop to the transitioning season, setting the stage for the slightly drier October ahead with just a slight increase in rainfall. This trend of increased precipitation from the earlier months culminates in September, reinforcing the area's reputation for heavy rainfall during late summer and early autumn. The combination of abundant rain and relatively mild temperatures aids in the flourishing local flora, underscoring Uwajima’s vibrant natural landscape.
September in Uwajima, Japan, brings a noticeable shift in humidity levels, settling at 84%. This marks a decrease from the summer months, where humidity peaked at an impressive 92% in July and remained high at 91% in August. The general trend reveals that after a sultry summer, the air begins to cool and refresh in September, though it still retains a certain mugginess characteristic of late summer. As autumn approaches, humidity levels gradually decline towards October's 83%, suggesting a transition into crisper days ahead, while still holding onto a residual warmth from the summer months.
In September, Uwajima experiences an UV Index of 11, classifying it as extreme and indicating a noteworthy increase as summer wanes. With a burn time of just 10 minutes, it mirrors the peak intensity seen in July and August, suggesting that sun protection remains crucial even as the warm season fades. This month’s UV levels taper slightly from the scorching averages of the summer, yet they still pose significant risks for unprotected skin. Notably, the transition into autumn marks a gradual drop in UV exposure, promising a safer UV environment in October with an expected index of 7. For insights on how to stay protected, visit Uwajima UV Index.
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September in Uwajima, Japan, offers a delightful balance of sunshine, with 265 hours of sunlight that glimmer through the early autumn days. Following the sunniest month of August, which boasted an impressive 308 hours, September marks a gentle decline in daylight, yet still holds onto the warmth of summer. This month reflects a gradual transition as the days shorten, leading into the cooler October with its 259 hours of sunlight. The overall trend showcases a seasonal ebb and flow, where summer's vibrant light gradually gives way to the softer glow of autumn, inviting residents and visitors alike to bask in the lingering warmth while enjoying the scenic beauty of the changing landscape.
In Uwajima, Japan, September brings a 35% chance of sunny weather, marking a transition from the sweltering summer months. As the summer heat begins to wane, the likelihood of clear skies is notably higher than the dismal figures seen in June and July, which hover around 23% and 24% respectively. While September still falls short of the sunniest months like October and November, with probabilities of 63% and 55%, it does hint at a gradual improvement as the region moves toward fall. Overall, September offers a mix of sunshine and clouds, making it a perfect time for outdoor enthusiasts to enjoy the lingering warmth before the cooler months set in.
As the vibrant summer months transition into early autumn, September in Uwajima, Japan, offers a delightful balance with 12 hours of daylight. This gentle decline from July's peak of 14 hours marks the onset of shorter days, reminding residents that fall is approaching. Following the warm and sun-drenched months of June and July, where daylight lingers longer, September provides a subtle reprieve, yet still maintains a generous amount of light compared to the onset of winter. As the year progresses towards its end, daylight gradually diminishes, dipping to 11 hours in October and eventually to 9 hours by December, painting a seasonal portrait of nature’s rhythm that invites contemplation and tranquility.
As September unfolds in Uwajima, Japan, the average wind speed drops to 2.6 m/s (6 mph), marking a noticeable trend of diminishing breezes as summer transitions to autumn. Following the more moderate winds of August at 3.4 m/s, the gentle September winds invite a serene atmosphere, perfect for enjoying the vibrant changing foliage and local festivals. This period contrasts sharply with the brisker winds of January and December, which average 3.9 m/s (9 mph) and 4.1 m/s (9 mph), respectively. With the prevailing calmness, September's winds gently herald the cooler months ahead, reflecting a seasonal ebb and flowing rhythm that characterizes the region’s climate.
Weather in Uwajima varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Uwajima, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather experiences. In September, temperatures range from a minimum of 16°C (61°F) to a maximum of 33°C (92°F), with an average of 25°C (77°F). This month is characterized by significant precipitation, averaging 192 mm (7.6 in) over about 15 days, and high humidity at 84%. In stark contrast, January features much cooler temperatures, with a minimum of -2°C (28°F), an average of 7°C (45°F), and a maximum of 17°C (64°F). January sees less rainfall, with only 53 mm (2.1 in) spread across 8 days, and lower humidity at 75%. For more details on January weather in Uwajima, you can visit Uwajima weather in January.
September and February present stark contrasts in weather. In September, temperatures range from a comfortable minimum of 16°C (61°F) to a warm maximum of 33°C (92°F), with an average of 25°C (77°F). This month also sees a higher precipitation level of 192 mm (7.6 in) over about 15 days, contributing to a high humidity of 84%. In contrast, February offers much cooler conditions, with temperatures dropping considerably to a minimum of -2°C (28°F) and averaging just 8°C (46°F), peaking at 20°C (69°F). While February receives less precipitation at 86 mm (3.4 in) over 10 days, the humidity is notably lower at 71%. For more detailed information, check out Uwajima weather in February.
September and March showcase contrasting weather patterns. In September, temperatures are significantly warmer, ranging from a minimum of 16°C (61°F) to a maximum of 33°C (92°F), with an average of 25°C (77°F). The month also experiences considerable rainfall, with 192 mm (7.6 in) of precipitation over 15 days and high humidity of 84%. In stark contrast, March features cooler conditions, with temperatures varying from a low of 1°C (35°F) to a high of 23°C (74°F), averaging just 12°C (54°F). Rainfall is also less frequent, with a total of 129 mm (5.1 in) over 11 days and lower humidity at 71%. For more information on the March weather specifics, you can check out Uwajima weather in March.
September and April display striking contrasts in weather conditions. September boasts much warmer average temperatures, ranging from a minimum of 16°C (61°F) to a maximum of 33°C (92°F), with an average of 25°C (77°F). In contrast, April sees cooler temperatures, with a minimum of 3°C (38°F) and a maximum of 26°C (78°F), averaging at 16°C (61°F). Additionally, September is characterized by higher humidity levels at 84% and significantly more rainfall, totaling 192 mm (7.6 in) across 15 days. April, while still wet, receives less precipitation at 126 mm (5.0 in) over 8 days, alongside a slightly lower humidity of 78%. For more detailed weather insights, you can check Uwajima weather in April.
September and May present distinctly different weather patterns. In September, the temperatures range from a minimum of 16°C (61°F) to a maximum of 33°C (92°F), with an average of 25°C (77°F). This month is characterized by significant precipitation, totaling 192 mm (7.6 in) over 15 days, maintaining high humidity levels of 84%. In contrast, May offers cooler temperatures, with a minimum of 8°C (46°F), an average of 20°C (68°F), and a maximum of 30°C (87°F). Additionally, May experiences less rainfall, receiving 165 mm (6.5 in) across 10 days, while also retaining a humidity level of 84%. For more specific details on May's weather, you can refer to Uwajima weather in May.
When comparing the weather in September and June, September tends to be warmer, with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 33°C (92°F), whereas June features slightly cooler conditions, with temperatures ranging from 14°C (57°F) to 30°C (86°F). Despite the warmer temperatures in September, it experiences just a bit less precipitation, with 192 mm (7.6 in) over 15 days compared to June's 215 mm (8.5 in) over 14 days. Humidity levels are quite similar in both months, with September at 84% and June slightly higher at 86%. For a more detailed look at June's specific weather, you can check Uwajima weather in June.
In comparing the weather between September and July, September tends to be slightly cooler with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 33°C (92°F), while July's temperatures are warmer, with averages from 19°C (66°F) up to 35°C (96°F). Additionally, September experiences less precipitation, totaling 192 mm (7.6 in) over about 15 days, compared to July's significantly higher rainfall of 353 mm (13.9 in) across 16 days. Humidity levels are also slightly lower in September at 84%, versus July's more humid average of 92%. For a closer look at July's climate specifics, you can refer to this link: Uwajima weather in July.
In August, the weather is generally warmer with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 36°C (97°F), resulting in a comfortable average of 28°C (83°F). This month also experiences slightly higher humidity at 91% and equivalent precipitation of 192 mm (7.5 in) over 14 days. In contrast, September sees a drop in temperatures, with a minimum of 16°C (61°F) and a maximum of 33°C (92°F), leading to a cooler average of 25°C (77°F). Humidity remains high at 84%, and precipitation increases slightly, falling on about 15 days. For more details on August weather patterns, you can visit Uwajima weather in August.
September experiences warmer temperatures, with a minimum of 16°C and maximum reaching up to 33°C, averaging around 25°C. In contrast, October sees a drop in temperatures, featuring a minimum of 9°C and a maximum of 30°C, resulting in a cooler average of 20°C. Both months are quite humid, with September recording 84% and October slightly lower at 83%. Interestingly, although October has slightly more precipitation at 194 mm (7.7 in) over just 10 rainy days, it remains comparable to September's 192 mm (7.6 in) over 15 days. For more detailed insights, check Uwajima weather in October.
September and November present contrasting weather conditions. In September, temperatures range from a minimum of 16°C (61°F) to a maximum of 33°C (92°F), with an average of 25°C (77°F). This month is characterized by high humidity at 84% and considerable rainfall, totaling 192 mm (7.6 in) over 15 rainy days. In contrast, November experiences much cooler temperatures, with a minimum of 2°C (37°F), an average of 14°C (58°F), and a maximum of 25°C (78°F). Precipitation diminishes significantly to 58 mm (2.3 in) over just 7 days, and humidity slightly decreases to 81%. For more details, you can visit Uwajima weather in November.
In September, the weather is typically warm and humid, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 33°C (92°F) and an average of 25°C (77°F). The month sees significant rainfall, with approximately 192 mm (7.6 in) of precipitation over about 15 days, leading to a high humidity level of 84%. In contrast, December marks a shift to cooler conditions, characterized by temperatures from 0°C (32°F) to a pleasant maximum of 23°C (73°F), averaging at 9°C (49°F). The precipitation decreases significantly to 62 mm (2.5 in) over just 7 days, and humidity levels are slightly lower at 79%. For further insights on how the weather conditions in December can affect your plans, check Uwajima weather in December.
As September unfolds in Uwajima, the weather transitions from the intense heat of summer to a more comfortable climate, marked by an average temperature of 25°C (77°F). While maximum temperatures can still reach 33°C (92°F), the increased humidity at 84% and significant rainfall, with 192 mm (7.6 in) occurring over 15 days, signal the onset of the rainy season. This month's distinctive blend of warmth and moisture sets it apart from the drier months that precede it, making it a crucial time for agriculture and nature alike. For more insights, check out Uwajima Climate.