Last updated: August 21, 2025
In September, Fukushima, Japan experiences a transition into autumn with average temperatures hovering around 20°C (69°F). Daily highs can reach up to 28°C (82°F), while nights can cool down to a refreshing 14°C (58°F). This month is marked by substantial precipitation, accumulating to 150 mm (5.9 in) over approximately 12 days, contributing to the region's lush landscapes. The humidity remains high at 89%, enhancing the vibrant feel of the early fall season. Amidst the occasional rains, September in Fukushima offers a unique blend of warmth and a fresh, crisp atmosphere, inviting exploration and appreciation of its natural beauty.
In September, Fukushima experiences a delightful transition as summer gives way to autumn. With minimum temperatures around 14°C (58°F) and maximums soaring to 28°C (82°F), the month provides a warm and comfortable climate, perfect for outdoor activities. The average temperature hovers at a pleasant 20°C (69°F), maintaining a cozy atmosphere for residents and visitors alike. This charming weather follows a summer peak, where August basked in heat, and foreshadows the cooler October days ahead. Overall, September offers a perfect balance, retaining the warmth of late summer while smoothly ushering in the crispness of fall, making it a particularly delightful time to visit this beautiful region of Japan.
In September, Fukushima experiences a notable precipitation level of 150 mm (5.9 inches), complemented by 12 days of rainfall. This amount, while lower than the torrential downpours of August, signifies a continuation of the wet season, as September sits in a transitional period leading into the autumn. The rainfall trends suggest a gradual increase each month, with the summer months (July and August) presenting peak precipitation levels that fall back somewhat in September but are still substantial. The rainy patterns hint at the region's dynamic climate, where the lush landscapes thrive on these generous monthly totals, setting the stage for the vibrant colors of autumn that follow.
In September, Fukushima experiences a notable drop in humidity to 89%, following the sweltering summer months where levels peak at an intense 97% in August. This decrease marks a transition from the oppressive stickiness of midsummer, which sees humidity rise significantly from 91% in June to 95% in July. With autumn approaching, the environment becomes more comfortable, as humidity levels retreat toward the more moderate figures of early spring, hovering around the low 80s. This pattern highlights not only the seasonal shifts that characterize Fukushima's climate but also the gradual ebb of moisture, offering a reprieve from the summer's heavy air.
In September, Fukushima experiences a notable transition as the UV Index drops to 8, categorized as very high, with a burn time of just 15 minutes. This marks a decrease from the extremes of summer, where August saw an 11, pushing exposure into the extreme range. The shift suggests that while the intense summer sun begins to wane, the risk of UV exposure remains significant, especially as people spend more time outdoors. As autumn approaches, it’s crucial to remain vigilant and protect your skin from harmful rays. For more detailed insights on UV levels throughout the year, check out the Fukushima UV Index.
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September in Fukushima, Japan, enjoys a delightful simmer of sunshine, with an impressive 266 hours of daylight illuminating the waning summer. As summer transitions to fall, the month represents a notable dip from the peak sunshine seen in July and May, both boasting 305 hours. However, September still stands strong compared to the earlier months of the year, showcasing a steady trend of increasing daylight hours from January's 152 hours to the summer months. This gradual ascent towards autumn indicates a rich tapestry of weather that enhances the region’s natural beauty and invites residents and visitors alike to savor the last of the warm days before the chill sets in.
As September rolls into Fukushima, Japan, the likelihood of sunny weather begins to climb, boasting a 43% chance of sunshine. This increase signifies a transition, standing out notably after the summer months, where the chances dip to 27% in August and hold steady at 36% in both July and June. The gradual rise seen in April and again in the fall shows the region's delicate balance of seasons, hinting that September is a time when warm days still linger before the cooler October temperature takes hold with a 39% expectation of sunshine. Overall, September offers a pleasant invitation for outdoor enjoyment, just as the foliage begins to hint at autumn.
In Fukushima, Japan, the month of September marks a transition as daylight starts to retreat, offering about 12 hours of sunlight each day. This gradual decrease follows a vibrant summer, where longer days peaked at 15 hours in June. As summer fades, September’s daylight still resonates with the lingering warmth of 14 hours in July and 13 hours in August. However, as autumn approaches, the average daylight will continue to decline, dropping to 11 hours in October and signaling the approach of winter’s shorter days. This cyclical ebb and flow of daylight not only reflects the changing seasons but also influences the mood and activities of the region, inviting a rich tapestry of experiences from the bright summer skies to the gentle onset of fall.
In Fukushima, Japan, the September winds offer a gentle respite as average wind speeds settle at 5.7 m/s (13 mph). This marks a notable dip from the more vigorous gusts seen earlier in the year, particularly in the winter months, where winds average around 9.1 m/s and 9.7 m/s in January and February, respectively. As spring transitions into summer, there's a gradual decline in wind speed, reaching its annual low in September before starting to rise again into the briskness of autumn. This trend illustrates a typical seasonal pattern, where the breezy summer days give way to calmer September afternoons, hinting at the invigorating fall winds on the horizon.
Weather in Fukushima varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Fukushima, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is notably warmer, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 28°C (82°F). The month experiences high humidity at 89% and considerable precipitation, totaling 150 mm (5.9 in) over approximately 12 days. In contrast, January presents a starkly different climate, with average temperatures plummeting to a range of -8°C (18°F) to 9°C (49°F). While precipitation is slightly lower at 128 mm (5.0 in), it occurs over a greater number of days, around 20, and the humidity drops to 79%. For more details on the weather specifics for January, you can refer to Fukushima weather in January.
September and February present striking contrasts in weather patterns. In September, temperatures range from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), accompanied by an average temperature of 20°C (69°F). This month also sees considerable rainfall, with 150 mm (5.9 in) over approximately 12 days and an elevated humidity level of 89%. In stark contrast, February experiences much chillier conditions, with temperatures dipping as low as -9°C (17°F) and peaking at just 9°C (48°F), averaging at 0°C (32°F). Although February has slightly less precipitation at 134 mm (5.3 in), it is distributed over a greater number of rainy days, totaling 22. Humidity in February is also lower at 78%. For more information on February weather specifics, you can visit Fukushima weather in February.
September weather is characterized by warmer temperatures, with averages around 20°C (69°F) and daily highs reaching up to 28°C (82°F), while March experiences much cooler conditions, featuring average temperatures of only 4°C (39°F) and maximums of 12°C (53°F). In September, the region faces higher humidity levels at 89% and more substantial precipitation, totaling 150 mm (5.9 in) over approximately 12 days. In contrast, March has lower humidity at 77% and slightly less precipitation at 105 mm (4.1 in) across 15 days. For a detailed look at the weather in March, you can check this link: Fukushima weather in March.
In comparing the weather between September and April, it's clear that September enjoys a much milder climate, with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), while April is significantly cooler, with temperatures ranging from 1°C (35°F) to a maximum of 14°C (57°F). Precipitation levels are also slightly higher in September, with about 150 mm (5.9 in) over 12 days, compared to 103 mm (4.1 in) over 14 days in April. Furthermore, the humidity in September is notably high at 89%, compared to 78% in April. For more detailed insights into April weather, you can check Fukushima weather in April.
In comparing the weather between September and May, September boasts warmer temperatures, with a minimum of 14°C (58°F) and a maximum of 28°C (82°F), resulting in a pleasant average of 20°C (69°F). In contrast, May experiences cooler conditions, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 18°C (65°F), and an average of just 12°C (53°F). Both months see a similar number of rainy days, with September experiencing 150 mm (5.9 in) of precipitation compared to May's 118 mm (4.6 in). Interestingly, the humidity in September is slightly higher at 89% compared to May's 86%. For a closer look at May's weather specifics, you can visit Fukushima weather in May.
In comparing the weather between September and June, September boasts warmer temperatures, with a minimum of 14°C (58°F) and an average of 20°C (69°F), reaching up to a maximum of 28°C (82°F). In contrast, June tends to be cooler, featuring a minimum temperature of 10°C (51°F) and an average of 15°C (60°F), peaking at 21°C (69°F). While both months experience significant rainfall—September sees 150 mm (5.9 in) over 12 days, and June has 128 mm (5.0 in) over 11 days—the humidity is slightly higher in June at 91% compared to September's 89%. For more details on the weather in June, you can check Fukushima weather in June.
When comparing the weather in September and July, we see some notable differences, even though their average temperatures are quite similar. September enjoys slightly warmer days with maximum temperatures reaching 28°C (82°F), compared to July's peak of 26°C (79°F), and both months start with a minimum temperature around 14°C (57°F-58°F). However, September experiences more precipitation, totaling 150 mm (5.9 in) over 12 days, while July has less rainfall at 120 mm (4.7 in) over 10 days. The humidity in July is notably higher at 95%, compared to September's 89%, contributing to a more humid feel during mid-summer. For more detailed insights on July's weather, you can check Fukushima weather in July.
In comparing the weather between September and August, September tends to be slightly cooler, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), compared to August's minimum of 17°C (62°F) and maximum of 27°C (81°F). While both months experience high humidity, September has an average humidity of 89%, which is somewhat lower than August’s 97%. Additionally, September sees less precipitation overall, with 150 mm (5.9 in) over 12 days, compared to August's 193 mm (7.6 in) over 14 days. For more detailed information, you can check Fukushima weather in August.
In September, the weather is generally warmer with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), accompanied by high humidity levels of 89%. The month sees significant rainfall, totaling 150 mm (5.9 in) over approximately 12 days. In contrast, October brings a noticeable drop in temperature, with averages between 7°C (44°F) and 23°C (74°F) and a lower humidity of 81%. While October experiences slightly higher precipitation, totaling 162 mm (6.4 in) over about 15 days, the overall atmosphere becomes cooler and crisper. For more detailed information, you can check Fukushima weather in October.
In September, the weather is characterized by mild temperatures, ranging from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), making it a pleasant month for outdoor activities. However, it also brings substantial rainfall, with around 150 mm (5.9 in) of precipitation over 12 days and a high humidity level of 89%. In contrast, November sees a significant drop in temperature, with averages around 9°C (48°F) and lows reaching -2°C (29°F). Although November experiences slightly higher precipitation at 164 mm (6.5 in) over 19 days, the overall atmosphere is drier, reflected in the lower humidity of 78%. For more details about the weather conditions in November, you can check this link: Fukushima weather in November.
September and December present strikingly different weather conditions. In September, temperatures range from a mild 14°C (58°F) at night to a warm average of 20°C (69°F) during the day, with highs reaching up to 28°C (82°F). However, this month also sees significant rainfall, with 150 mm (5.9 in) over 12 days and high humidity at 89%. In contrast, December experiences much colder temperatures, with a minimum of -6°C (21°F) and an average of just 2°C (36°F), peaking at 14°C (57°F). Precipitation increases to 207 mm (8.2 in) over 27 days, although the humidity drops to 77%. For more detailed insight into December weather, you can visit Fukushima weather in December.
As September rolls in, Fukushima experiences a notable shift in its weather patterns, marked by a comfortable average temperature that hovers around 20°C (69°F). This month not only ushers in warmth with highs reaching 28°C (82°F) but also brings increased humidity levels, often peaking at 89%. While the city enjoys some sunny days, it also sees an uptick in rainfall, with 150 mm of precipitation spread over about 12 days. This combination of warmth and wetness sets September apart from the drier, cooler months that precede it, creating a unique atmosphere as the transition to autumn begins. For more detailed insights, visit Fukushima Climate.