Last updated: August 21, 2025
December in Sendai, Japan experiences a cool climate characterized by an average temperature of 3°C (37°F), with daily highs reaching up to 16°C (61°F) and plunging as low as -5°C (23°F) during chilly nights. This month is marked by substantial precipitation, totaling around 67 mm (2.6 in) across approximately 16 days, contributing to the city's lush winter atmosphere. With humidity levels around 80%, December weather in Sendai provides a crisp yet damp environment, perfect for enjoying the serene beauty of the winter season.
In December, Sendai, Japan, begins to embrace the chill of winter, with temperatures reflecting a notable drop as the year winds down. The minimum temperature hovers around -5°C (23°F), while the average settles at a brisk 3°C (37°F), and highs can reach a mild 16°C (61°F). This month marks a transition, showing a trend from the warmer autumn months, as indicated by the average temperature decrease from 9°C (48°F) in November to December’s 3°C (37°F). As the city prepares for the colder nights ahead, it's a time for cozy activities and enjoying the festive atmosphere that the season brings.
In December, Sendai experiences a notable increase in precipitation, with 67 mm (2.6 in) of rainfall spread over 16 days. This uptick reflects a transitional shift as the city wraps up the year, moving from the drier conditions of November, which had only 40 mm of rainfall over just 9 days. The month showcases a consistent pattern in precipitation, as it lies within a range similar to January’s rainfall yet significantly higher than earlier months like February. As winter approaches, the frequency of rain contributes to the region's cool, damp climate, setting the stage for the colder months ahead while also highlighting a tendency for increased precipitation as the year draws to a close.
In Sendai, Japan, December sees a return to a comfortable humidity level of 80%, mirroring the figures from both January and May. As the year progresses, a noticeable trend emerges: the humidity peaks during the sweltering summer months of June through August, where it soars to a high of 92%. Following this humid peak, a gradual decline occurs, with September's 86% and October's 82% reflecting the cooling transition into winter. Despite this downward trend, December stabilizes with a consistent humidity level, suggesting a balanced climate as the city braces for the colder months ahead.
As December settles over Sendai, Japan, the UV Index drops to 3, indicating a moderate exposure category, with a burn time of 30 minutes. This reflects a trend of decreasing UV levels as winter approaches, providing a contrast to the summer months when the index soared to 11 under extreme conditions. From the very high levels experienced in May and June, the UV exposure steadily wanes, making it a safer time for outdoor activities, though protective measures are still advisable. For those planning to bask in the crisp winter sun, learning more about the UV Index can be beneficial; visit Sendai UV Index for detailed insights.
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December in Sendai, Japan, brings a gentle retreat into the cooler months with 204 hours of sunshine. This marks a slight decrease from November’s 218 hours, hinting at the gradual transition into winter. As the year unfolds, there’s a clear trend of increasing daylight from January's modest 167 hours peaking in May with 292 hours. The sunshine hours steadily rise through spring and early summer before tapering off in the late autumn. This gradual dance between light and dark not only marks the changing seasons but also invites a sense of coziness and reflection as the year comes to a close, reminding residents of the vibrant energy brought by the sun throughout the year.
In Sendai, Japan, the likelihood of enjoying sunny weather in December stands at 39%, which aligns with the trend seen throughout late autumn and early winter. As the year draws to a close, December offers a modest chance of sunshine, reflecting a slight dip from the 55% peak observed in November. This pattern is indicative of a transitional period, where the chances of bright days give way to the colder, cloudier conditions of winter. Compared to other months, December holds a sense of predictability in its weather, bridging the gap between the falling leaves of autumn and the snowy landscapes that January brings. With temperatures dropping, it’s a time when those rays of sun are particularly cherished.
In December, Sendai experiences a seasonal transition into shorter days, with only 9 hours of daylight lighting the city. This marks a return to the minimal daylight seen in January, suggesting a consistent winter pattern where both months share the same limited exposure to sunlight. As the year progresses, daylight hours gradually increase from 10 hours in February to a peak of 14 hours in May and June. This upward trend maintains its peak through July, before gradually tapering off in the later months. As autumn advances, daylight diminishes from 13 hours in August to a mere 10 hours by November, culminating in the short, chilly days of December. This cyclical pattern highlights the stark contrast between the long, bright summers and the cold, dark winters characteristic of Sendai's climate.
In Sendai, Japan, December marks a subtle shift in the winds as the average speed reaches 3.2 m/s (7 mph), reminding residents of the gustier days of winter. This uptick follows a gradual increase from the calmer summer months, where July's wind speed dipped to 1.9 m/s (4 mph). As the year closes, the wind starts to gather strength again, echoing the earlier months of winter when January recorded a similar speed of 3.0 m/s (7 mph). This trend highlights a seasonal return to brisk conditions, setting a refreshing tone for the festive season amid the city's scenic landscapes.
Weather in Sendai varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sendai, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January weather display notable differences, particularly in temperature. December experiences a broader range with minimum temperatures dropping to -5°C (23°F) and maximums reaching up to 16°C (61°F), while January is generally colder, with minimums falling to -10°C (14°F) and maximums peaking at 11°C (52°F). Precipitation remains similar between the two months, with December receiving 67 mm over 16 days and January slightly less at 65 mm over 13 days, both with a humidity level of 80%. For those interested in more detailed weather specifics, the link provides further insights: Sendai weather in January.
December weather typically features a milder average temperature of 3°C (37°F), while February is slightly colder with an average of 1°C (35°F). Although both months experience chilly conditions, December sees a higher maximum temperature of 16°C (61°F) compared to February's 15°C (59°F). Precipitation is a bit more prevalent in December, with 67 mm (2.6 in) over 16 days, while February has slightly less, totaling 53 mm (2.1 in) across 12 days. Humidity levels remain relatively similar, with December at 80% and February at 79%. For a more detailed look at February weather, you can visit Sendai weather in February.
In December, temperatures in Sendai typically range from a chilly -5°C (23°F) at night to a mild 16°C (61°F) during the day, with an average temperature of around 3°C (37°F). The month is characterized by significant precipitation, amounting to about 67 mm (2.6 in) over 16 days, while humidity levels hover around 80%.
In contrast, March sees slightly warmer weather, with minimum temperatures of -3°C (26°F) and maximum highs reaching up to 20°C (69°F), resulting in an average temperature of 5°C (42°F). Precipitation increases to 112 mm (4.4 in) spread across 13 days, and humidity decreases slightly to 77%. Overall, March offers a gradual transition towards spring, making it notably wetter and warmer compared to the December chill. For a detailed look at the weather during this month, check out Sendai weather in March.
December and April present distinctly different weather patterns. In December, temperatures can dip as low as -5°C (23°F) and average around 3°C (37°F), while the maximum reaches 16°C (61°F). The month experiences significant humidity at 80%, with precipitation totaling 67 mm (2.6 in) over 16 days. In contrast, April welcomes warmer conditions, featuring minimum temperatures of -2°C (29°F) and average highs of 10°C (50°F), peaking at a comfortable 26°C (80°F). Although April is wetter, with 109 mm (4.3 in) of rainfall across just 12 days, it experiences slightly lower humidity at 75%. For more detailed insights, you can check out Sendai weather in April.
December and May present contrasting weather conditions, showcasing the distinct shifts between winter and late spring. In December, temperatures range from a chilly -5°C (23°F) to a mild 16°C (61°F), with an average of around 3°C (37°F). This month experiences about 67 mm (2.6 in) of precipitation over 16 days, all while maintaining a high humidity level of 80%. In stark contrast, May boasts much warmer temperatures, with a range from a minimum of 4°C (40°F) to a maximum of 30°C (87°F) and an average of 16°C (61°F). Though it sees slightly more precipitation at 107 mm (4.2 in) over 13 days, the overall weather feels more pleasant and vibrant as spring unfolds. For those curious about the delightful conditions in May, more details can be found here: Sendai weather in May.
December and June present stark contrasts in weather conditions. In December, temperatures range from a chilly -5°C (23°F) at night to a mild 16°C (61°F) during the day, with an average of around 3°C (37°F). The month sees approximately 67 mm (2.6 in) of precipitation over 16 days, accompanied by high humidity levels at 80%. In contrast, June typically features much warmer temperatures, with a minimum of 10°C (49°F) and a maximum of 32°C (89°F), averaging 19°C (67°F). The weather in June is also wetter, recording about 101 mm (4.0 in) of rain over 13 days, and experiences slightly higher humidity at 87%. For those interested in more specifics about June weather, you can check out Sendai weather in June.
December and July present starkly different weather experiences. In December, temperatures range from a chilly -5°C (23°F) at the minimum to a mild 16°C (61°F) at its peak, with an average temperature of about 3°C (37°F). This month sees about 67 mm (2.6 in) of precipitation spread over approximately 16 days, coupled with a high humidity level of 80%. In contrast, July boasts significantly warmer temperatures, with a minimum of 15°C (60°F) and a maximum reaching up to 35°C (95°F), averaging around 23°C (74°F). This summer month also experiences much higher precipitation at 232 mm (9.1 in) over 18 days, alongside a humidity level of 92%. For more details, check out Sendai weather in July.
December and August present contrasting weather conditions. In December, temperatures range from a chilly -5°C (23°F) to a mild max of 16°C (61°F), with an average of around 3°C (37°F). The month experiences about 67 mm (2.6 in) of precipitation over 16 days, coupled with high humidity at 80%. In sharp contrast, August offers much warmer temperatures, with a minimum of 14°C (58°F) and a sweltering maximum of 35°C (95°F), averaging around 25°C (77°F). This summer month is significantly wetter, receiving 214 mm (8.4 in) of rain across 20 days, along with even higher humidity levels at 92%. For a closer look at August weather specifics, you can check Sendai weather in August.
December and September offer contrasting weather experiences. In December, temperatures can dip as low as -5°C (23°F), with an average of 3°C (37°F) and highs reaching 16°C (61°F). The month is characterized by higher humidity at 80% and approximately 67 mm (2.6 in) of precipitation spread over 16 days. In stark contrast, September boasts a much warmer climate, with temperatures ranging from a minimum of 8°C (47°F) to an average of 21°C (69°F) and maximums soaring up to 33°C (92°F). Although it tends to be rainier with about 150 mm (5.9 in) of precipitation over 14 days, September also has a higher humidity level of 86%. For a closer look at September weather specifically, check out Sendai weather in September.
In comparing the weather between December and October, it's clear that December experiences significantly colder temperatures, with average highs reaching only 3°C (37°F), while October enjoys a milder average of 15°C (59°F). Additionally, December has a minimum temperature that can drop to -5°C (23°F), contrasting sharply with October's minimum of 4°C (39°F). Precipitation levels are also notably different; December sees 67 mm (2.6 in) of rain over 16 days, while October is much wetter, with 208 mm (8.2 in) falling across 12 days. Humidity levels are relatively similar, hovering around 80% in December and 82% in October. For a closer look at the specific weather conditions in October, you can visit Sendai weather in October.
In comparing the weather between November and December, one can observe a noticeable drop in temperatures as December's average sits at 3°C (37°F), compared to November's milder 9°C (48°F). The maximum temperatures in December also fall short, reaching only 16°C (61°F) versus November's high of 21°C (69°F). Additionally, December sees more precipitation, with 67 mm (2.6 in) spread over 16 days, while November experiences less with 40 mm (1.6 in) over just 9 days. Humidity levels remain comparable, with December at 80% and November at 79%. For those interested in detailed weather specifics for November, you can visit Sendai weather in November.
As December unfolds in Sendai, the weather depicts a stark transition from the milder months, introducing cooler temperatures and a noticeable increase in precipitation. With an average temperature of 3°C (37°F), residents experience brisk days and chilly nights, often dipping to -5°C (23°F). The month is marked by heightened humidity levels at 80%, which can make the cold feel even more biting. Rain is frequent, with about 16 days of precipitation accumulating to 67 mm (2.6 in), heralding the shift to winter and making it a cozy time to enjoy indoor activities or the seasonal festivities. For a deeper understanding of Sendai's weather patterns throughout the year, explore Sendai Climate.