Last updated: August 21, 2025
September in Niseko Town, Japan offers a delightful transition into autumn, characterized by a pleasant average temperature of 17°C (62°F). Daily highs can reach a maximum of 28°C (83°F), providing warm, sunny afternoons perfect for exploration. However, evenings can get cooler, dipping to a minimum of 4°C (39°F), reminding visitors of the upcoming seasonal change. This month also sees significant precipitation with 116 mm (4.6 in) spread across 14 days, contributing to the lush landscapes that Niseko is renowned for. With a humidity level hovering around 88%, the air feels fresh and invigorating, setting the stage for a picturesque outdoor experience.
September in Niseko Town, Japan welcomes the onset of autumn with a refreshing shift in temperatures, showcasing a delightful range from a minimum of 4°C (39°F) to a comfortable maximum of 28°C (83°F). The average temperature hovers around 17°C (62°F), marking a gradual transition from the summer heat of August. This month is characterized by cooler mornings and pleasant afternoons, as the landscape begins to don its fall colors. As temperatures begin to dip, the crisp air invites outdoor activities, making it a perfect time for hiking and enjoying the breathtaking scenery. The warmth of September provides a lovely backdrop for visitors seeking to experience the stunning natural beauty of Niseko before the chill of winter settles in.
In September, Niseko Town experiences a notable transition in its precipitation patterns, receiving 116 mm (4.6 in) of rainfall over 14 days. This marks a slight decrease from the heavy downpours of August, which recorded 147 mm (5.8 in) across 13 days. As summer wanes, September's rainfall contributes to the lush greenery and vibrant autumn hues, while creating a more temperate climate ideal for outdoor activities. Interestingly, precipitation remains consistent as the month progresses into October, maintaining comparable amounts, which can be attributed to seasonal weather shifts. This trend highlights Niseko's unique climate, where early autumn can bring both serene beauty and refreshing rainfall, setting the stage for the winter months ahead.
In September, Niseko Town experiences a humidity level of 88%, maintaining a notably moist atmosphere as summer winds down. This figure, while lower than the 95% peak in August, still reflects the region's overall trend of high humidity during the warmer months. As the year progresses, humidity begins to gradually decline, particularly following the sweltering peak of summer, with October dropping to 83%. The shifting patterns illustrate how Niseko transitions from its lush, humid summers to milder, drier autumn days, making September a lingering reminder of the season's vibrant climate.
As September rolls into Niseko Town, Japan, the UV Index remains notably high at 8, classifying its exposure category as very high. This marks a slight decline from the peak summer months where UV levels reached 10, yet caution is still advised as the burn time shortens to just 15 minutes. The progression from winter's low UV Index of 2 in January to this late-summer high illustrates a clear seasonal trend toward increased sun intensity. Whether you're planning outdoor adventures or simply enjoying the stunning scenery, it's essential to stay protected. For more information on daily UV levels, visit Niseko Town UV Index.
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As summer gracefully transitions into autumn, September in Niseko Town offers a delightful balance of warmth and sunlight, boasting 270 hours of sunshine. This month marks the tail end of the sunniest season, following a peak in July with 313 hours. The gradual decline in daylight hours continues into October, but September still presents ample opportunities for outdoor adventures amidst stunning natural scenery. With the month preceding a notable dip in hours, September’s bright days provide the perfect backdrop for exploring Niseko’s vibrant landscapes before the winter snow blankets the region. The blend of comfortable temperatures and lingering sunshine creates a magical atmosphere, ideal for soaking in the beauty of this captivating town.
In Niseko Town, Japan, the likelihood of sunny weather in September stands at 32%, aligning with the transitional vibe of early autumn. This month sees a slight dip from the preceding summer, which recorded a higher probability of sunshine, particularly in June at 43% and July at 38%. However, September's sun chances are comparable to the springtime figures of March and October, suggesting a gradual shift toward more mixed weather. While the summer sun fades, September still holds the potential for pleasant days, making it a lovely time for those looking to experience the charming landscapes of Niseko under mellow, sunny skies.
As September arrives in Niseko Town, Japan, daylight begins its gradual retreat, offering about 12 hours of light—a subtle transition from the sun-drenched days of summer. Following the peak of daylight in June with an impressive 15 hours, the landscape shifts, guiding residents and visitors alike into the enchanting autumn season. This month's daylight duration is a reminder of nature’s rhythm, as it dips slightly from the earlier summer months yet still provides plenty of time to explore the stunning surroundings. Notably, the consistent increase in daylight from January through June showcases the welcoming warmth of summer, which then gracefully ebbs towards the autumn chill as daylight dwindles in the following months.
As September settles over Niseko Town, Japan, the gentle whispers of the September wind greet residents and visitors alike, averaging a calm 2.1 m/s (5 mph). This marks a continuation of the trend observed through the summer months, where wind speeds have remained consistently tranquil, hovering around the same level as June, July, and August. Compared to the slightly brisker conditions seen in early spring, the arrival of autumn brings a subtle shift towards stillness, creating an inviting atmosphere for outdoor activities. As the seasons change, this consistent breeze enhances the serene beauty of Niseko, painting a picture of a tranquil transition in nature's cycle.
Weather in Niseko Town varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Niseko Town, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present strikingly contrasting weather patterns. In September, temperatures range from a minimum of 4°C (39°F) to a pleasant average of 17°C (62°F), peaking at 28°C (83°F). This month also experiences significant rainfall, with a total precipitation of 116 mm (4.6 in) spread over 14 days and high humidity levels at 88%. Conversely, January is marked by much colder conditions, with temperatures plummeting to a minimum of -20°C (-4°F) and an average of -6°C (22°F), only reaching a maximum of 4°C (39°F). Precipitation in January decreases to 64 mm (2.5 in) over 15 days, with humidity slightly lower at 84%. For a closer look at conditions, you can check Niseko Town weather in January.
September and February present starkly contrasting weather conditions. In September, temperatures range from a mild 4°C (39°F) at night to a warm 28°C (83°F) during the day, with an average of 17°C (62°F). The month experiences significant precipitation of 116 mm (4.6 in) over 14 days and humidity levels reaching 88%. In contrast, February brings much colder weather, with temperatures dropping to a minimum of -17°C (1°F) and peaking at 7°C (45°F), averaging -5°C (23°F). While February's precipitation is lower at 69 mm (2.7 in), it occurs over more days—18 in total—and humidity is slightly lower at 83%. For a detailed view of February's weather patterns, you can visit Niseko Town weather in February.
September and March exhibit contrasting weather patterns. In September, temperatures range from a mild 4°C (39°F) to a warm 28°C (83°F), with an average of 17°C (62°F). The month experiences higher humidity at 88% and substantial rainfall amounting to 116 mm (4.6 in) over 14 days. In contrast, March is much colder, with temperatures dipping from a minimum of -13°C (10°F) to a maximum of 13°C (56°F) and an average of 0°C (32°F). Although March sees less precipitation at 89 mm (3.5 in) over the same 14 days, the humidity is slightly lower at 81%. For a more detailed look at the weather during this month, check out Niseko Town weather in March.
In comparing the weather between September and April, it's evident that September tends to be milder and wetter. September boasts a minimum temperature of 4°C (39°F) and an average high of 28°C (83°F), while April starts off colder, with temperatures ranging from a minimum of -6°C (22°F) to an average high of 19°C (67°F). Additionally, September experiences more precipitation at 116 mm (4.6 in) over 14 days, compared to April's 93 mm (3.7 in) over 12 days, contributing to higher humidity levels of 88% in September versus 81% in April. For a detailed look at April's weather in Niseko, you can check out Niseko Town weather in April.
When comparing the weather in September and May, we see notable differences in temperature and precipitation. September offers a broader temperature range with minimums around 4°C (39°F) and maximums reaching 28°C (83°F), while May tends to be cooler overall, with minimums around 2°C (35°F) and average highs of 29°C (84°F). Precipitation levels are also higher in September, with 116 mm (4.6 in) over 14 days compared to May's 87 mm (3.4 in) across 12 days, though humidity stays relatively similar at 88% in September and 86% in May. For a deeper look into May's weather specifics, you can visit Niseko Town weather in May.
In comparing the weather of September and June, both months exhibit mild temperatures, though September generally tends to be slightly warmer. September boasts a minimum temperature of 4°C and an average of 17°C, peaking at 28°C, while June has a slightly lower range with a minimum of 3°C, an average of 15°C, and a maximum of 26°C. Precipitation levels are relatively similar, with September receiving 116 mm over 14 days and June close behind at 112 mm over 11 days. The humidity remains high in both months, with September at 88% and June at 87%. For more detailed insights into the weather conditions, you can explore Niseko Town weather in June.
When comparing the weather in September to that of July, notable differences emerge. September offers a broader temperature range, with minimums dipping to 4°C (39°F) and maximums reaching 28°C (83°F), while July maintains a warmer profile with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 31°C (89°F). Additionally, September experiences more precipitation, totaling 116 mm (4.6 in) over 14 days, compared to July's 97 mm (3.8 in) across 12 days. Humidity levels are slightly higher in July at 93%, while September's humidity sits at 88%. For more detailed insights on July weather, visit Niseko Town weather in July.
In September, the weather cools down compared to August, with minimum temperatures dropping to 4°C (39°F) and maximums reaching 28°C (83°F). The average temperature in September is 17°C (62°F), a noticeable decrease from August's average of 20°C (69°F). Additionally, while September experiences slightly less precipitation at 116 mm (4.6 in) over 14 days, its humidity remains high at 88%. In contrast, August sees more rainfall at 147 mm (5.8 in) over just 13 days, accompanied by even higher humidity levels of 95%. For a closer look at August weather in Niseko, you can refer to Niseko Town weather in August.
In September, temperatures range from a cool minimum of 4°C (39°F) to a warm maximum of 28°C (83°F), with an average of 17°C (62°F), while October sees a notable drop in average temperature to 10°C (51°F), with minimums dipping as low as -2°C (29°F). Both months experience significant precipitation, with September totaling 116 mm (4.6 in) over 14 days and October slightly lower at 115 mm (4.5 in) over 15 days. Interestingly, humidity levels also decrease from 88% in September to 83% in October, reflecting the transition from late summer to early autumn. For detailed information about October weather, you can visit Niseko Town weather in October.
September and November present quite contrasting weather conditions. In September, temperatures range from a mild minimum of 4°C (39°F) to a warm maximum of 28°C (83°F), with an average of 17°C (62°F). The month typically experiences 116 mm (4.6 in) of precipitation over 14 days, coupled with high humidity at 88%. In stark contrast, November sees much colder temperatures, with a minimum of -12°C (11°F) and an average of only 3°C (39°F), peaking at 16°C (60°F). The precipitation remains the same at 116 mm (4.6 in), but it falls over more days—20 in total—which contributes to a lower humidity level of 79%. For more details on November weather, you can check Niseko Town weather in November.
September's weather is marked by mild temperatures, with averages around 17°C (62°F) and daily highs reaching up to 28°C (83°F). The month experiences significant rainfall, with 116 mm (4.6 in) over approximately 14 days, resulting in a higher humidity level of 88%. In contrast, December brings a stark change as temperatures plunge, with minimums dropping to -17°C (2°F) and average temperatures hovering around -4°C (25°F). Precipitation decreases to 86 mm (3.4 in), but it occurs over more days, totaling 24. December's humidity is slightly lower at 80%. For a closer look at the conditions in December, you can visit Niseko Town weather in December.
As September unfolds in Niseko Town, a noticeable transition in weather occurs, setting it apart from the summer months. While temperatures can still reach a warm 28°C (83°F), the average cools significantly to a more refreshing 17°C (62°F), inviting the onset of autumn. Frequent rain contributes to an elevated humidity level of 88%, with about half the days seeing precipitation. This blend of conditions creates a unique and vibrant atmosphere, where the rich colors of nature start to emerge. To explore more about how these weather patterns shape Niseko's charm throughout the year, visit Niseko Town Climate.