Last updated: August 21, 2025
September in Muroran, Japan offers a delightful transition into autumn, characterized by warm days and cool evenings. The maximum temperature reaches a comfortable 27°C (81°F), while the average hovers around 19°C (67°F), allowing for pleasant outdoor activities. Nights can cool down to a minimum of 13°C (56°F), making a light jacket advisable. However, with an average precipitation amount of 137 mm (5.4 in) spread over 13 days, visitors should be prepared for occasional rain. The humidity level remains high at 88%, contributing to the lush, vibrant landscapes that define this charming coastal city. Embrace the beauty of Muroran’s September weather as nature begins to showcase its stunning autumn hues.
September in Muroran, Japan, marks a delightful transition as summer makes its graceful exit. With minimum temperatures around 13°C (56°F) and reaching a comfortable maximum of 27°C (81°F), the month offers a pleasant average of 19°C (67°F). This mild climate invites both locals and visitors to enjoy outdoor activities amidst the lingering warmth before autumn settles in. As the temperatures begin to cool, the vibrant hues of early fall start to emerge, creating an enchanting backdrop for leisurely walks along the coastline. The balance of warm days and crisp evenings makes September an ideal time to experience the natural beauty that Muroran has to offer.
In September, Muroran experiences a marked shift in its climate, with precipitation reaching 137 mm (5.4 in) over approximately 13 days of rain. This significant amount, while lower than the record highs of August (194 mm), illustrates the tail end of the summer rainy season, maintaining a steady flow of moisture that supports the region's lush landscapes. Comparatively, September's rainfall lays just slightly below the peaks of the summer months yet remains consistent, highlighting a transitional period where the days gradually cool but still welcome ample rain. This rhythm sets the stage for the approaching autumn, contrasting the drier conditions anticipated in the months ahead.
In Muroran, Japan, September marks a transition as humidity begins to recede from the peak summer levels. With an average humidity of 88%, September still retains a palpable heaviness in the air, although it’s a dip from the sweltering 95% experienced in August. Following the persistent warmth of summer, this month hints at the approaching autumn, where the air becomes noticeably drier, paving the way for lower humidity levels in October at 83%. This fluctuation illustrates a dynamic climate, where late summer's lush moisture slowly gives way to the crispness of fall, inviting a refreshing change while still holding onto the remnants of summer's embrace.
September in Muroran, Japan, sees a notable UV Index of 8, categorizing the exposure as very high and indicating a burn time of just 15 minutes. This trend reflects a gradual decline from the peak UV levels experienced in the summer months, yet the intensity remains significant enough to warrant caution when enjoying outdoor activities. With the UV Index dipping from 10 in August, it becomes essential for residents and visitors alike to maintain sun safety practices, as the sun’s rays can still be potent. As we transition into the cooler months, the UV Index will continue to decline, making September a key month for vigilance. For more information on UV exposure and safety, visit Muroran UV Index.
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September in Muroran, Japan, is characterized by a delightful continuation of summer warmth, as the city basks in 265 hours of sunshine. This marks a subtle decline from the sun-drenched days of previous months, where June and July boasted nearly 300 hours each. Following the peak of summer, September maintains a vibrant brightness, bridging the transition into autumn. While daylight begins to wane in October, dropping to 235 hours, the lingering warmth of September serves as a beautiful farewell to the sunny allure of summer, enticing visitors to enjoy the last rays of sunshine before the cooler months set in.
As September rolls around in Muroran, Japan, the chance of sunny weather stands at 40%, marking a noticeable improvement from the summer months. While August experiences a dip to 24%, September's percentages reflect a seasonal shift towards clearer skies, contrasting with the typically cloudier days of July. This pattern continues into the fall, with sunny prospects persisting at about 43% in both October and June, indicating a trend of more favorable weather as temperatures gradually cool. As you plan your September activities, take advantage of the increased likelihood of sunshine that sets the stage for delightful outdoor experiences.
As September unfolds in Muroran, Japan, residents can enjoy about 12 hours of daylight, marking a gentle transition toward the shorter days of autumn. This month sits comfortably between the peak brightness of summer, with 15 hours of daylight in June, and the dwindling light of October, which sees just 11 hours. The gradual decrease in daylight from the vibrant stretch of May and June reflects the natural rhythm of the seasons, as autumn begins to weave its way into the landscape. As daylight wanes, September invites a serene balance of light and shadow, making it an ideal time for enjoying the beauty of nature before winter sets in.
As the seasons shift in Muroran, Japan, September ushers in a gentle breeze with an average wind speed of 4.2 m/s (9 mph), making it one of the calmer months of the year. This slight decrease from the summer months reflects a transition toward the cooler autumn days, where winds tend to be milder, particularly following the warmer days of July and August, which hovered around 4.3 m/s (10 mph) and 5.2 m/s (12 mph) respectively. Interestingly, the wind speeds begin to pick up again in October, suggesting that the approach of winter stirs a little more vigor into the air as temperatures drop. Overall, September serves as a serene pause, perfectly capturing the essence of early autumn before gustier conditions return in the following months.
Weather in Muroran varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Muroran, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather. In September, temperatures range from a mild 13°C (56°F) as a minimum to a comfortable 27°C (81°F) at the peak, with an average of 19°C (67°F). This month experiences significant rainfall, accumulating 137 mm (5.4 in) over 13 days and a high humidity level of 88%. On the other hand, January is characterized by much colder conditions, with temperatures dropping to a minimum of -9°C (16°F) and a maximum of 8°C (47°F), averaging at -1°C (30°F). Although it sees less precipitation at 66 mm (2.6 in), it still rains on 13 days, accompanied by a slightly lower humidity of 84%. For detailed information about January weather patterns, you can refer to Muroran weather in January.
In September, temperatures in Muroran range from a mild 13°C (56°F) at night to a warm 27°C (81°F) during the day, averaging around 19°C (67°F). With 137 mm (5.4 in) of rainfall over 13 days, the month experiences high humidity at 88%. In contrast, February presents a starkly different climate, with nighttime temperatures plummeting to -10°C (14°F) and daytime highs reaching only up to 6°C (43°F), averaging -1°C (30°F). Despite having the same number of rainy days, February sees considerably less precipitation at 59 mm (2.3 in) and lower humidity at 83%. For more detailed insights about February weather, you can check Muroran weather in February.
When comparing the weather in September and March, it's clear that these months exhibit a stark contrast in temperature and conditions. September boasts a mild climate with average temperatures ranging from 13°C (56°F) at night to a pleasant maximum of 27°C (81°F) during the day, accompanied by relatively high humidity at 88% and frequent rainfall, with 137 mm (5.4 in) of precipitation over 13 days. In contrast, March sees much cooler temperatures, with an average low of -5°C (23°F) and a high reaching only 10°C (50°F). This month is drier than September, experiencing 81 mm (3.2 in) of precipitation across 9 days and a slightly lower humidity level of 81%. For a more detailed look at Muroran's weather in March, you can visit Muroran weather in March.
September and April present contrasting weather experiences. In September, temperatures range from a mild 13°C (56°F) during the night to a warm 27°C (81°F) at their peak, with an average temperature of 19°C (67°F). This month also sees considerable rainfall, with 137 mm (5.4 in) spread over 13 days, contributing to a high humidity level of 88%. In contrast, April is much cooler, with nighttime temperatures dipping to 0°C (32°F) and daytime highs reaching only 15°C (59°F), yielding an average of just 6°C (42°F). The precipitation in April is lighter at 86 mm (3.4 in) over 11 days, and the humidity is slightly lower at 81%. For more detailed weather information, you can check Muroran weather in April.
September and May exhibit distinct weather characteristics despite both being transitional months. In September, temperatures range from a minimum of 13°C (56°F) to a maximum of 27°C (81°F), with an average of 19°C (67°F), making it noticeably warmer than May, where temperatures vary from 5°C (41°F) to 22°C (73°F), averaging just 10°C (50°F). Additionally, September experiences higher precipitation at 137 mm (5.4 in) over 13 days, compared to May's 99 mm (3.9 in) across 10 days. Humidity levels are slightly higher in September at 88%, while May maintains a level of 86%. For a more detailed look at May’s weather, check out Muroran weather in May.
When comparing the weather in September and June, September tends to be warmer with average temperatures ranging from 13°C (56°F) to a maximum of 27°C (81°F), while June's temperatures range from a minimum of 9°C (48°F) to an average of 14°C (58°F). September also experiences slightly more precipitation, with 137 mm (5.4 in) falling over 13 days compared to June's 126 mm (5.0 in) over 11 days. Humidity levels are very similar in both months, hovering around 88% in September and 87% in June, creating a humid atmosphere as summer transitions into autumn. For more detailed insights on June weather, you can visit Muroran weather in June.
In comparing September and July weather, we see some notable similarities and differences. Both months have a minimum temperature around 13°C (55°F-56°F) and an average temperature that hovers around 19°C (66°F-67°F). However, September tends to be slightly warmer with a maximum of 27°C (81°F), compared to July's maximum of 26°C (79°F). Precipitation levels are fairly close as well, with September receiving 137 mm (5.4 in) over 13 days and July experiencing 128 mm (5.0 in) across 14 days. Humidity is also notably higher in September at 88%, compared to July's 93%. For more details on July's weather, you can check Muroran weather in July.
In comparing the weather between September and August, September tends to be slightly cooler with an average temperature of 19°C (67°F) compared to August's 21°C (70°F). Both months share a maximum temperature of 27°C (81°F), but September's minimum is lower at 13°C (56°F), while August starts warmer at 16°C (61°F). Precipitation levels are also noteworthy; September sees 137 mm (5.4 in) of rain over 13 days, whereas August is wetter with 194 mm (7.7 in) over 15 days. Additionally, humidity is higher in August at 95%, compared to September's 88%. For a closer look at August weather specifics, check out Muroran weather in August.
September generally experiences warmer temperatures, with minimums around 13°C (56°F) and average highs reaching 27°C (81°F), while October sees cooler conditions, with a minimum of 6°C (43°F) and an average of 14°C (58°F). Precipitation remains relatively similar between the two months, with September recording 137 mm (5.4 in) over 13 days and October slightly less at 127 mm (5.0 in) across 12 days. Additionally, September's humidity is a bit higher at 88%, compared to October's 83%. For more detailed weather information, visit Muroran weather in October.
September and November present a striking contrast in weather conditions. In September, temperatures range from a comfortable minimum of 13°C (56°F) to a warm maximum of 27°C (81°F), with an average of 19°C (67°F). The month typically experiences 137 mm (5.4 in) of precipitation over 13 days, accompanied by high humidity levels at 88%. In contrast, November brings a chillier climate, with temperatures dipping significantly, with a minimum of -3°C (28°F) and an average of 8°C (46°F), peaking at 17°C (62°F). Precipitation decreases to 95 mm (3.8 in) across the same number of days, and humidity drops to a more moderate 79%. For a closer look at November's weather specifics, check out Muroran weather in November.
In September, the weather is relatively warm, with average temperatures ranging from 13°C (56°F) at night to a pleasant 27°C (81°F) during the day. It experiences significant rainfall, with 137 mm (5.4 in) distributed over 13 days, and a high humidity level of 88%. In contrast, December brings much colder conditions, with average temperatures plummeting to around 1°C (35°F) and nighttime lows of -6°C (21°F). Although it has less precipitation at 86 mm (3.4 in), rain or snow is common on 21 days, accompanied by a slightly lower humidity of 80%. For those interested in the specifics of December weather, you can find more details here: Muroran weather in December.
As September settles in, Muroran experiences a delightful transition into autumn. Temperatures start to cool from the summer highs, offering a more comfortable average that encourages outdoor activities. With an increased humidity level and an average of 13 rainy days, the month brings a significant amount of precipitation, making it one of the wetter periods of the year. This blend of mild temperatures and frequent rain creates a refreshing environment, distinguishing September from the summer months with a perfect chance to enjoy the vibrant fall foliage. For more detailed insights, visit Muroran Climate.