Last updated: August 21, 2025
September in Asahikawa, Japan, ushers in a dynamic transition of weather, offering a maximum temperature of 29°C (85°F) and an average of 16°C (62°F), while dipping to a cool 2°C (37°F) at night. With 103 mm (4.1 in) of rainfall spread over 13 days, this month presents a rich tapestry of humid conditions, averaging 88% humidity. This blend of warmth and moisture creates a vibrant atmosphere, perfect for experiencing the beautiful autumn foliage that begins to emerge.
In September, Asahikawa, Japan transitions gently from the warmth of summer to the briskness of fall. With a minimum temperature of 2°C (37°F) and an average of 16°C (62°F), the days remain pleasantly mild, peaking at a comfortable 29°C (85°F). This month's climate offers a striking contrast to the harsh winter months that precede and follow it, making September one of the more inviting periods of the year. As the lush landscapes prepare for autumn, visitors can enjoy the crisp air and vibrant foliage, welcoming a change that hints at the chillier temperatures to come in October and beyond.
September in Asahikawa, Japan, marks a continuation of the region's wet season, with precipitation measuring 103 mm (4.1 in) over 13 rainy days. This amount is consistent with the precipitation seen in June and mirrors trends from earlier months, highlighting a peak in rainfall as summer transitions into autumn. The notable spike in August's rainfall, reaching 200 mm (7.9 in), gives way to a more moderate yet significant level of precipitation in September, suggesting a gradual tapering of summer storms. As temperatures begin to cool, the steady rainfall continues to nourish the landscape, making September a month of lush greenery and vibrant autumn colors in Asahikawa.
As September rolls into Asahikawa, Japan, the humidity begins to gradually decline from the sweltering heights of summer. With an average of 88% this month, September marks a transition from the peak levels of 95% in August, easing into the more moderate conditions typical for autumn. While the humidity remains relatively high, particularly compared to the drier months of November and December, this slight decrease indicates a shift towards cooler temperatures and more comfortable weather. Observing the trend, humidity starts at a high of 84% in January, peaking in July, and then slowly retreats, suggesting a cyclical pattern that reflects the changing seasons and the distinctive climate of this region.
In September, Asahikawa experiences a UV Index of 8, indicating a very high level of sun exposure that requires attention. This marks a slight decline from the peak summer months of July and August, which both reached a UV Index of 10. As the season transitions towards autumn, the burn time remains at a brisk 15 minutes, emphasizing the need for sun protection during outdoor activities. This pattern reveals the tail end of summer’s intensity, as the UV Index steadily decreases into the fall. As the days shorten and temperatures cool, it's essential to stay informed about UV levels. For more detailed insights, visit Asahikawa UV Index.
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September in Asahikawa, Japan, is kissed by a delightful 260 hours of sunshine, making it one of the sunniest months of the year. As summer transitions into autumn, this enchanting city enjoys a tail end of bright days, riding high on a wave of warmer months that peak in July with 304 hours of sun. As the days start to shorten, sunlight remains abundant compared to the earlier months, with May and June boasting 295 and 285 hours respectively. However, as the season advances, sunlight begins to wane, leading into October's 230 hours and eventually down to just above 180 hours by December. This gradual decrease invites a cozy atmosphere, perfectly complementing the vibrant autumn foliage that Asahikawa is known for.
September in Asahikawa, Japan, offers a promising 36% chance of sunny weather, making it one of the more favorable months for enjoying the outdoors. As summer transitions to autumn, the likelihood of sunshine remains relatively high, similar to the early spring months of April and March. While June peaks at 42%, September maintains consistency in sunniness compared to its neighboring months, such as August and October. This steady chance of sun invites both locals and visitors alike to revel in the beautiful changing foliage and milder temperatures, setting the stage for a delightful early autumn experience.
In Asahikawa, Japan, September marks a gentle transition as daylight begins to wane, with 12 hours of daylight that month. Following the vibrant summer months of July and August, when the days stretched to a generous 15 hours, September brings a noticeable shift, signaling the forthcoming autumn. This reduction in daylight continues into October, dropping to 10 hours, as the days grow shorter leading into winter. The trend of increasing daylight from the depths of winter in January, with just 9 hours, to the summer peak showcases the rhythmic seasonal changes that define this northern city. Observing these patterns not only highlights the beauty of Asahikawa's climate but also invites reflection on nature’s cyclical transformations throughout the year.
As September unfolds in Asahikawa, Japan, the air carries a gentle breeze, averaging 2.0 m/s (4 mph)—a continuation of the calm summer winds. This month marks a subtle transition, as wind speeds remain steady with a slight decline from the gusty spring, where the average peaked at 3.3 m/s (7 mph) in April. While autumn begins to brush the landscape, it’s interesting to note that the wind picks up again in October, indicating nature's playful oscillation between seasons. Overall, September embodies a serene stillness before the winds of winter gradually return, creating a tranquil setting perfect for reflecting on the seasonal shifts around this charming northern city.
Weather in Asahikawa varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Asahikawa, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather conditions. In September, temperatures vary widely, with a minimum of 2°C (37°F) and a pleasant maximum of 29°C (85°F), making the month feel quite moderate with an average of 16°C (62°F). The humidity is notably high at 88%, and while there is significant precipitation of 103 mm (4.1 in) over 13 days, the warmth still provides a vibrant backdrop for early autumn.
In sharp contrast, January is characterized by frigid temperatures, with lows plummeting to -23°C (-10°F) and an average of -8°C (19°F), only reaching a maximum of 4°C (40°F). Though January receives less precipitation at 59 mm (2.3 in) over 17 days, the cold air is accompanied by 84% humidity, creating a bitter chill. For a more detailed look at January weather, you can visit Asahikawa weather in January.
September and February present starkly contrasting weather conditions. In September, temperatures range from a cool 2°C (37°F) to a warm 29°C (85°F), with an average of 16°C (62°F). The month experiences significant rainfall, with 103 mm (4.1 in) of precipitation spread over 13 days, and humidity levels are relatively high at 88%. In contrast, February brings frigid temperatures, with lows plunging to -25°C (-13°F) and a maximum of only 6°C (43°F), averaging -6°C (21°F). Although February sees less total precipitation at 79 mm (3.1 in), it is spread across more days, totaling 19, and the humidity is slightly lower at 83%. For more detailed insights into February's weather, you can visit Asahikawa weather in February.
In September, temperatures in Asahikawa range from a chilly 2°C (37°F) at night to a warm 29°C (85°F) during the day, with an average of 16°C (62°F). The month experiences significant precipitation, totaling 103 mm (4.1 in) across 13 days, and humidity levels are quite high at 88%. In contrast, March brings much colder conditions, with nighttime lows plunging to -17°C (1°F) and daytime highs reaching only 16°C (61°F), resulting in an average temperature of 0°C (32°F). There is slightly less precipitation in March, totaling 87 mm (3.4 in) over 15 days, and the humidity is more moderate at 81%. For a detailed look at March weather specifics, visit Asahikawa weather in March.
When comparing the weather in September and April, notable differences emerge. September experiences a milder average temperature of 16°C (62°F), with highs reaching up to 29°C (85°F), while April's maximum temperature peaks at only 22°C (72°F) and has a significantly cooler average of 6°C (43°F). Additionally, September has higher humidity at 88% compared to April's 81%, making the late summer month feel more humid. Precipitation is also more abundant in September, averaging 103 mm (4.1 in) over 13 days, compared to April's 76 mm (3.0 in) over 14 days, which suggests that April might feel a bit drier despite the slightly greater number of rainy days. For more details on April weather, you can explore Asahikawa weather in April.
In comparing the weather of September and May, September tends to be warmer overall, with average temperatures reaching 16°C (62°F) and maximums of 29°C (85°F), while May's averages sit lower at 12°C (55°F) and can peak at 32°C (90°F). Both months experience similar levels of precipitation, with September receiving 103 mm (4.1 in) over about 13 days, compared to May's 104 mm (4.1 in) over 14 days. Humidity levels are slightly higher in September at 88%, whereas May enjoys a comfortable 86%. For more detailed insights into May weather, you can visit Asahikawa weather in May.
In comparing the weather between September and June, we can observe several similarities and subtle differences. Both months have an average temperature of around 16°C (61°F), but September reaches slightly higher maximum temperatures of 29°C (85°F) compared to June's peak of 28°C (82°F). Interestingly, both months experience similar levels of precipitation, with September accumulating 103 mm (4.1 in) over 13 days and June also at 103 mm (4.1 in) over 14 days. Humidity levels are slightly higher in September at 88%, while June remains close at 87%. For more detailed information on June weather, you can check Asahikawa weather in June.
In comparing the weather of September to that of July, September experiences cooler temperatures, with a minimum of 2°C (37°F) and an average of 16°C (62°F), contrasted with July's warmer minimum of 9°C (48°F) and an average of 21°C (69°F). While both months see significant precipitation, September averages 103 mm (4.1 in) over 13 days, slightly less than July's 131 mm (5.1 in) also over 13 days. Humidity remains relatively high in both months, with September at 88% and July at 93%. For a more detailed look at July's weather patterns, visit Asahikawa weather in July.
Comparing the weather between September and August reveals notable differences in temperature and precipitation patterns. In September, temperatures range from a minimum of 2°C (37°F) to a maximum of 29°C (85°F), with an average of 16°C (62°F). This is noticeably cooler than August, where the temperatures range from a minimum of 8°C (48°F) to a maximum of 32°C (90°F), averaging 20°C (69°F). Additionally, September experiences 103 mm (4.1 in) of rainfall over 13 days, while August is wetter, with 200 mm (7.9 in) of precipitation over 17 days. The humidity in September averages 88%, slightly lower than August's 95%. For more details, visit Asahikawa weather in August.
September and October present a notable transition in weather, as September generally enjoys milder temperatures with an average of 16°C (62°F) and highs reaching 29°C (85°F). However, it also experiences significant rainfall, with 103 mm (4.1 in) over 13 days and high humidity at 88%. In contrast, October sees a drop in temperatures, with averages declining to 10°C (50°F) and maximums of 23°C (75°F), along with even more precipitation—148 mm (5.8 in) across 16 days. Humidity slightly decreases to 83%, marking a shift towards the colder months. For more details, check Asahikawa weather in October.
September and November present contrasting weather patterns. In September, temperatures range from a mild 2°C (37°F) at night to a warm average of 16°C (62°F) during the day, with a maximum of 29°C (85°F). However, this month experiences significant precipitation, totaling 103 mm (4.1 in) over 13 days, and high humidity at 88%. In stark contrast, November sees a substantial drop in temperatures, with nighttime lows plummeting to -10°C (14°F) and an average of only 3°C (38°F) during the day, rising to a maximum of 16°C (61°F). Precipitation increases to 138 mm (5.4 in) spread across 23 days, but humidity decreases to 79%. Thus, while September is characterized by warmer temperatures and less frequent rain, November brings colder weather and more rainy days. For more details, check out Asahikawa weather in November.
In September, the weather tends to be mild with temperatures ranging from a minimum of 2°C (37°F) to a maximum of 29°C (85°F), bringing an average of 16°C (62°F). The month experiences higher humidity at 88% and receives about 103 mm (4.1 in) of precipitation over approximately 13 days. In contrast, December is significantly colder with temperatures plummeting to a minimum of -19°C (-2°F) and only reaching a maximum of 13°C (55°F), leading to an average temperature of -4°C (24°F). This winter month sees even more precipitation at 109 mm (4.3 in), but over more frequent rain and snow days—about 27 in total—while humidity levels drop slightly to 80%. For more detailed information, you can check Asahikawa weather in December.
September in Asahikawa marks a transition into autumn, as temperatures begin to dip from the summer highs. With an average of 16°C, this month offers a pleasant coolness, contrasting sharply with the steamy summer months. Notably, the humidity remains high at 88%, making the air feel invigorating yet slightly heavy. While precipitation is frequent with around 13 rainy days, the total amount of rain is manageable, summing up to 103 mm. Overall, September's weather presents a refreshing change, inviting residents and travelers alike to bask in the beauty of early fall. For a deeper dive into the local climate patterns, visit Asahikawa Climate.