Last updated: August 21, 2025
In October, Sendai experiences a transitional climate marked by pleasant daytime temperatures peaking at 27°C (81°F), while the average settles at a comfortable 15°C (59°F) and can drop to a brisk 4°C (39°F) during the cooler nights. The region sees an average precipitation of 208 mm (8.2 in) over approximately 12 days, contributing to the lush, vibrant autumn scenery. With humidity levels around 82%, the air feels refreshing yet slightly moist, characteristic of this beautiful season in Sendai.
In October, Sendai experiences a delightful transition into autumn, characterized by a mild climate that invites outdoor exploration. With nighttime temperatures dipping to a cozy 4°C (39°F) and daytime highs reaching a pleasant 27°C (81°F), it’s a month where the crispness of fall begins to take hold. The average temperature sits comfortably at 15°C (59°F), easily making it a favorite for both locals and travelers. This gradual cool-down from the sizzling summer heat—where July and August peak at 35°C (95°F)—makes October not only a visually stunning time, as foliage shifts to vibrant hues, but also an inviting one, perfect for enjoying Sendai's beautiful parks and bustling markets without the summer crowds.
October in Sendai, Japan, sees a significant uptick in precipitation, with an average of 208 mm (8.2 in) falling over the month. This marks a noticeable trend, as October frequently ranks among the wetter months, following the heavy rains of summer. With 12 rainy days on average, the month continues to reflect the tail end of the rainy season, allowing for lush, vibrant landscapes. The substantial rainfall in October contributes to a gradual shift towards drier months, as November typically experiences a sharp decline in both precipitation amount and frequency of rainy days. This fascinating interplay between wet and dry seasons highlights the region's dynamic climate, making October a crucial month for understanding Sendai's weather patterns.
In October, Sendai experiences a notable shift in humidity, settling at 82% after a summer of peak levels, which soared to 92% in both July and August. This transitional month reflects a gradual decrease from the previous highs, yet remains comfortably above the annual average. Following the lush greenery of summer and the initial crispness of fall, October's humidity trend highlights the region's characteristic blend of seasons; while there's a drop from the wetter months, the air retains enough moisture to sustain the stunning autumn foliage. As the year progresses, humidity figures begin to stabilize, setting the stage for the cooler, dryer months ahead.
As October rolls into Sendai, Japan, the UV Index drops to 6, placing it in the high exposure category with a burn time of about 25 minutes. This decline is a noticeable shift from the preceding summer months, where the index peaked at 11, classified as extreme. While early autumn still calls for caution, with the UV intensity remaining significant, the gradual reduction in UVA exposure offers a welcome respite from the scorching summer days. In this transitional period, residents and visitors should continue to monitor UV levels and practice sun safety. For more detailed insights on UV trends throughout the year, check Sendai UV Index.
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As October descends upon Sendai, Japan, the city enjoys a substantial 210 hours of sunshine, marking a transition into a more subdued light as autumn deepens. This month continues the trend of robust sunlight that peaks in late spring with 292 hours in May, though it shows a noticeable decline as the year progresses. Following the vibrant summer months, where July and August maintain impressive totals of 254 and 271 hours respectively, October hints at the impending winter, reflecting a typical pattern of diminishing daylight from the year's height. Yet, with its 210 hours, this October still offers a welcomed warmth and brightness, bridging the gap between the lingering summer exuberance and the calm, reflective months ahead.
In Sendai, Japan, October offers a moderate 38% chance of sunny weather, slightly below the year's average but still promising for outdoor activities. This month marks a transition from the warmer summer months, where sunshine is less frequent, with both July and August hovering around 21%, to a gradual increase in clear skies leading into November’s more favorable 55% chance of sunshine. The data suggests that while October can be variable, it's a time when residents and visitors can still experience pleasant days before the chill of winter sets in, making it an ideal window for enjoying the autumn foliage.
As October rolls into Sendai, Japan, daylight begins to wane, offering around 11 hours of sunlight each day. This marks a gradual decline from the longer days of summer, where the city enjoys a peak of 14 hours from June through August. The shifts in daylight reflect a natural rhythm, transitioning from the vibrant 14 hours of May to the more subdued 10 hours in November. October’s sunlight also hints at the onset of autumn, with shorter days fostering a cozy ambiance as the month progresses, inviting residents to embrace the seasonal changes and prepare for the winter ahead.
As October unfolds in Sendai, Japan, the breeze begins to whisper a gentle cadence, with an average wind speed of 2.4 m/s (5 mph). This slight uptick from the summer's calmest months marks a transition into a season where the air feels crisper and more invigorating. Notably, October's winds remain relatively mild compared to the winter months ahead, emphasizing a gradual shift rather than an abrupt change. The slow, steady rise in wind speed leading into November suggests an impending chill, while still allowing residents to enjoy the beauty of autumn foliage under a gentle, refreshing sky.
Weather in Sendai varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Sendai, focusing on differences in temperature, rainfall, humidity, and UV levels.
October and January present stark contrasts in weather conditions. In October, temperatures typically range from a mild 4°C (39°F) at night to a warm average of 15°C (59°F), peaking at 27°C (81°F) during the day, accompanied by significant rainfall totaling 208 mm (8.2 in) across about 12 days and high humidity at 82%. In contrast, January experiences much colder weather, with temperatures dipping as low as -10°C (14°F) and averaging around 0°C (33°F), peaking at only 11°C (52°F). Precipitation is considerably lower in January at 65 mm (2.6 in) over 13 days, with humidity slightly decreasing to 80%. For detailed insights on January weather, you can check Sendai weather in January.
October and February present starkly contrasting weather conditions. October boasts milder temperatures, ranging from a minimum of 4°C (39°F) to a maximum of 27°C (81°F), with an average of 15°C (59°F), making it a comfortable month. However, this pleasant weather is accompanied by significant rainfall, totaling 208 mm (8.2 in) over 12 days, contributing to a relatively high humidity level of 82%. In contrast, February experiences much colder temperatures, with a minimum plunging to -10°C (14°F) and a maximum of only 15°C (59°F), resulting in a chilly average of 1°C (35°F). Precipitation is markedly lower in February at 53 mm (2.1 in) over the same number of days, and humidity is slightly lower at 79%. For more detailed information, you can check Sendai weather in February.
The weather in October is generally warmer and more humid compared to March. In October, temperatures range from a minimum of 4°C (39°F) to a maximum of 27°C (81°F), with an average of 15°C (59°F) and a notable precipitation of 208 mm (8.2 in) over 12 days, resulting in a humidity level of 82%. In contrast, March experiences colder temperatures, with minimums plummeting to -3°C (26°F) and a maximum of 20°C (69°F), alongside an average of just 5°C (42°F). March also sees less precipitation, totaling 112 mm (4.4 in) across 13 days and a slightly lower humidity of 77%. For more details, you can check out Sendai weather in March.
When comparing the weather between October and April, we observe marked differences in temperature and precipitation. In October, temperatures range from a chilly 4°C (39°F) to a warm 27°C (81°F), with an average of 15°C (59°F). The month experiences significant rainfall, totaling 208 mm (8.2 in) over 12 days and a higher humidity level of 82%. In contrast, April sees cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 26°C (80°F), averaging around 10°C (50°F). Rainfall is lighter at 109 mm (4.3 in) also spread over 12 days, with a slightly lower humidity of 75%. For more detailed insights, you can check Sendai weather in April.
October and May present distinct weather patterns. In October, temperatures range from a minimum of 4°C (39°F) to a maximum of 27°C (81°F), with an average of 15°C (59°F). This month also sees considerable rainfall, totaling 208 mm (8.2 in) across 12 days, and a humidity level of 82%. In contrast, May features slightly warmer averages, with temperatures ranging from 4°C (40°F) to 30°C (87°F) and an average of 16°C (61°F). Rainfall is less frequent, accumulating to 107 mm (4.2 in) over 13 days, while the humidity is slightly lower at 80%. For a deeper look at May's climate, you can explore Sendai weather in May.
In comparing the weather of October and June, we observe distinct differences in temperature and precipitation patterns. October features a wider temperature range, with lows around 4°C (39°F) and highs reaching up to 27°C (81°F), while the average temperature is 15°C (59°F). In contrast, June maintains milder temperatures, ranging from a minimum of 10°C (49°F) to a maximum of 32°C (89°F), with an average of 19°C (67°F). Precipitation in October is notably higher at 208 mm (8.2 in) over 12 days, compared to June’s 101 mm (4.0 in) across 13 days. Furthermore, June experiences slightly higher humidity at 87%, compared to 82% in October. For a more detailed look at the June weather, you can visit Sendai weather in June.
When comparing the weather in October and July, a notable contrast emerges in both temperature and humidity levels. October experiences cooler temperatures, with a minimum of 4°C (39°F) and an average of 15°C (59°F), while July is significantly warmer, boasting a minimum of 15°C (60°F) and an average of 23°C (74°F), reaching highs of up to 35°C (95°F). In terms of precipitation, October sees 208 mm (8.2 in) over 12 days, whereas July has slightly higher rainfall at 232 mm (9.1 in) spread over 18 days. Humidity is also higher in July at 92% compared to October's 82%. For more details on July weather in Sendai, check out Sendai weather in July.
In comparing the weather of October and August, it is clear that October experiences significantly cooler temperatures, with a minimum of 4°C (39°F) and an average of 15°C (59°F), in contrast to August's warmer range, which features a minimum of 14°C (58°F) and an average of 25°C (77°F). While August can reach maximum temperatures up to 35°C (95°F), October's maximum is relatively mild at 27°C (81°F). Both months bring considerable rainfall; October sees 208 mm (8.2 in) over 12 days, whereas August has slightly higher precipitation at 214 mm (8.4 in) across 20 days. Humidity levels are also higher in August at 92%, compared to October's 82%. For more specific details, you can check out this link: Sendai weather in August.
In comparing the weather patterns of October and September, October tends to be cooler and wetter. The average temperature in October is notably lower, with a minimum of 4°C (39°F) and an average of 15°C (59°F), compared to September’s warmer range that includes a minimum of 8°C (47°F) and an average of 21°C (69°F). Additionally, October experiences more rainfall, accumulating 208 mm (8.2 in) over about 12 days, while September sees less precipitation at 150 mm (5.9 in) across 14 days. Humidity levels are slightly lower in October, recorded at 82%, compared to 86% in September. For a closer look at September weather specifics, you can refer to Sendai weather in September.
October and November exhibit quite a contrast in weather patterns. In October, temperatures range from a chilly 4°C (39°F) at night to a warm 27°C (81°F) during the day, with an average of 15°C (59°F). This month sees significant precipitation, totaling 208 mm (8.2 in) over 12 days and an average humidity of 82%. In comparison, November experiences cooler temperatures, dipping to a minimum of -3°C (27°F) and peaking at 21°C (69°F), with an average of 9°C (48°F). The precipitation dramatically decreases to 40 mm (1.6 in) over just 9 days and a slightly lower humidity of 79%. For more specific details, check out this link: Sendai weather in November.
October weather is milder with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 27°C (81°F), giving it an average of 15°C (59°F). The month experiences significant rainfall, with 208 mm (8.2 in) spread over 12 days, and a high humidity level of 82%. In contrast, December brings much colder temperatures, with a minimum dropping to -5°C (23°F) and an average of only 3°C (37°F), peaking at 16°C (61°F). Additionally, precipitation decreases to 67 mm (2.6 in) across 16 days, with humidity slightly lower at 80%. For a more detailed look at December conditions, visit Sendai weather in December.
As October unfolds in Sendai, the transition from the warmth of summer to the crispness of autumn becomes evident. The month brings a mild average temperature, making it a comfortable time for outdoor activities, although the cooler nights remind us of the approaching winter. With increased precipitation and humidity, October is notably wetter than the preceding months, adding a refreshing vibrancy to the landscape. This blend of warm days and cool evenings, coupled with the colorful fall foliage, creates a picturesque setting that distinguishes October from the rest of the year. For a deeper understanding of Sendai's climate throughout the seasons, visit Sendai Climate.