Last updated: August 21, 2025
In January, Sendai, Japan experiences a crisp winter climate characterized by average temperatures hovering around 0°C (33°F). The month can see maximum highs of 11°C (52°F) and chilling lows plummeting to -10°C (14°F). Visitors should prepare for frequent precipitation, with around 65 mm (2.6 in) of rain or snow spread over 13 days, contributing to a notable humidity level of 80%. This blend of conditions creates a unique atmosphere, making January an intriguing time to explore the city’s winter beauty.
In January, Sendai experiences a chilly winter embrace, with temperatures dipping to a frigid -10°C (14°F) at night and peaking at a crisp 11°C (52°F) during the day, resulting in an average hovering around 0°C (33°F). As the month progresses into February, the cold persists, maintaining similar low minimums of -10°C (14°F) but nudging the average slightly higher to 1°C (35°F). As spring approaches in March, temperatures begin their upward trend, with milder days giving way to an average of 5°C (42°F) and daytime highs reaching 20°C (69°F). This gradual warming continues into April and May, where the climate transforms into a more inviting warmth, showcasing averages of 10°C (50°F) and 16°C (61°F), respectively. The transition marks a distinct shift, leading into a vibrant summer characterized by July and August's soaring temperatures, where highs consistently hit 35°C (95°F). This fluctuation from the depths of winter to the balmy embrace of summer highlights Sendai's dynamic climate, offering visitors a diverse experience throughout the year.
In January, Sendai experiences a moderate precipitation of 65 mm (2.6 in), falling over about 13 days. This early winter rainfall sets the stage for a gradual decline in precipitation through February, which sees a slight decrease to 53 mm (2.1 in), indicating a trend toward drier conditions. As winter unfolds, March brings a notable surge, with 112 mm (4.4 in), suggestive of an incoming seasonal shift. This pattern continues into the spring months, where April and May see consistent rainfall amounts around 109 mm and 107 mm, respectively. As summer approaches, the rain intensifies dramatically, peaking in July with a staggering 232 mm (9.1 in) across 18 days, marking the onset of the wet season. Overall, this data reflects a clear trend of fluctuating precipitation that transitions from moderate winter rains to intense summer downpours, painting a vivid picture of Sendai's dynamic climate.
In January, Sendai experiences a relatively high humidity level of 80%, setting the tone for the winter months. This trend of elevated humidity continues into February at 79%, before gradually decreasing in March and April to 77% and 75% respectively. As spring gives way to summer, the humidity surges again, peaking at an astonishing 92% in both July and August, showcasing the region's muggy summer weather. By September, humidity begins to decline to 86%, followed by a gradual descent through the autumn months, settling back at 80% by December. Overall, January's humidity serves as a reminder of the seasonal fluctuations that characterize Sendai's climate throughout the year.
In January, Sendai experiences a moderate UV Index of 3, allowing for a safe exposure time of 30 minutes before the risk of burning increases. This trend of moderate UV levels continues into February with a slight rise to 4. However, as spring approaches, the UV Index sharply escalates, reaching 7 in March and soaring to 8 by April, where extra caution is warranted with a reduced burn time of just 15 minutes. The peak intensity occurs during the summer months, hitting a staggering 11 in both July and August, necessitating even shorter exposure times of 10 minutes to avoid skin damage. As autumn sets in, the UV readings decline, dropping back to 6 in October and returning to moderate levels in November and December with 4 and 3 respectively. This annual fluctuation highlights the importance of staying informed about the UV Index throughout the year. For more detailed insights, visit Sendai UV Index.
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January in Sendai, Japan, marks the beginning of a gradual increase in sunshine hours, with 167 hours of sunlight illuminating the winter landscape. As the months progress, February brings 222 hours, hinting at the approaching spring. By March, the sun shines even brighter, offering 258 hours of warmth, while April and May see a delightful ascent to 271 and 292 hours, respectively, as cherry blossoms begin to bloom. The summer months introduce a slight dip, with 280 hours in June and 254 hours in July, before returning to a pleasant 271 hours in August. As autumn sets in, the sunlight gradually wanes, with September and October showcasing 247 and 210 hours, and November further softening to 218 hours. Finally, December rounds out the year with 204 hours, leaving residents eagerly anticipating the return of longer, sunnier days. This beautiful ebb and flow of sunlight throughout the year highlights Sendai’s unique charm, making every season a spectacle of nature’s brilliance.
In January, Sendai experiences a 39% likelihood of sunny weather, making it a month of modest sunshine compared to the rest of the year. Interestingly, this percentage is closely matched by December, which also holds a 39% chance, while November stands out with a more favorable 55%. As winter progresses into February, the sun shines a bit brighter with a 48% chance, indicating a potential uplift in sunshine as temperatures begin to stabilize. However, by March, the probability dips to 33%, suggesting that the early spring brings more cloud cover. Overall, while January delivers a fair share of sunshine, it's evident that the months immediately surrounding it offer a mixed bag, setting the stage for a gradual shift towards clearer skies as winter gives way to spring.
In Sendai, Japan, January heralds the year with only 9 hours of daylight, as the city emerges from the short, chilly days of winter. As the month gives way to February, daylight slowly expands to 10 hours, a subtle indication of the approaching spring. This gradual increase accelerates through March, reaching 11 hours, and makes a notable leap to 13 hours in April. By May, the days stretch even longer, peaking at 14 hours in both June and July, as summer fully embraces the region. As August rolls in, daylight wanes slightly to 13 hours, setting the stage for a gentle decline. September experiences 12 hours, followed by an equal decrease through October and November, where daylight again shrinks to 10 hours and then back to 9 hours in December. This cyclical pattern of sunlight reflects the rhythmic transitions of nature, offering a vibrant canvas that evolves through each month.
In January, Sendai experiences an average wind speed of 3.0 m/s (7 mph), setting the tone for a brisk winter month. This is relatively moderate compared to the following month, February, which sees a slight increase to 3.8 m/s (9 mph), bringing an invigorating chill to the air. As the seasons shift toward spring, March and April maintain a consistent 3.3 m/s (7 mph), creating a steady, refreshing breeze that complements the flowering landscape. However, as temperatures rise in May to 2.8 m/s (6 mph), the winds begin to taper off further into the summer. By July, the winds drop to their lowest average at just 1.9 m/s (4 mph), reflecting the calm and heat of the season. This gentle trend continues into the autumn months, where winds gradually pick up to 2.5 m/s (6 mph) by November, before closing the year in December with a return to slightly brisker conditions at 3.2 m/s (7 mph). Overall, the wind patterns in Sendai showcase a gentle ebb and flow, echoing the transition from winter’s chill to summer’s calm and back again.
Weather in Sendai varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Sendai, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February exhibit relatively similar cold temperatures, with January averaging around 0°C (33°F) and February slightly warmer at 1°C (35°F). Both months experience minimum temperatures dipping to -10°C (14°F), but February sees a slightly higher maximum of 15°C (59°F) compared to January’s 11°C (52°F). Precipitation is a bit more prevalent in January, totaling 65 mm (2.6 in) over 13 days, whereas February experiences 53 mm (2.1 in) across 12 days. Humidity levels remain close, with January at 80% and February at 79%. For a more detailed look at February weather conditions, you can visit Sendai weather in February.
In January, the weather in Sendai presents a chilly landscape, with temperatures ranging from a frosty -10°C (14°F) at night to a maximum of 11°C (52°F) during the day, alongside significant precipitation of 65 mm (2.6 in) over 13 days. Humidity remains high at 80%, contributing to the crisp winter air. In contrast, March brings milder conditions, with temperatures increasing to a minimum of -3°C (26°F) and soaring up to 20°C (69°F), marking a notable transition towards spring. However, March also experiences higher overall precipitation at 112 mm (4.4 in), although the number of rainy days remains consistent at 13, and humidity sees a slight decrease to 77%. For more details on the weather in this month, visit Sendai weather in March.
In January, temperatures are considerably colder, with a minimum of -10°C (14°F) and an average of around 0°C (33°F), while April experiences much milder weather with temperatures ranging from a minimum of -2°C (29°F) to a comfortable average of 10°C (50°F) and a maximum of 26°C (80°F). January also sees higher humidity levels at 80% compared to April's 75%, making the winter chill feel even more penetrating. Precipitation is slightly lower in January at 65 mm (2.6 in) over 13 days, while April witnesses increased rainfall at 109 mm (4.3 in) over 12 days, indicating that springtime brings more wet weather. For more details on April weather, check out Sendai weather in April.
In January, the weather in Sendai experiences chilly conditions, with average temperatures hovering around 0°C (33°F) and a maximum of 11°C (52°F). The month sees considerable precipitation of 65 mm (2.6 in) spread over 13 days, accompanied by high humidity levels of 80%. In stark contrast, May brings a significant warming trend, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 30°C (87°F) and an average of 16°C (61°F). While May also sees 107 mm (4.2 in) of precipitation over the same number of rainy days, the overall climate is much more pleasant and humid at 80%. For more specifics about May weather, check out Sendai weather in May.
In January, Sendai experiences frigid temperatures, with a minimum of -10°C (14°F) and an average of 0°C (33°F), while the maximum temperature can reach 11°C (52°F). The month is marked by significant precipitation of 65 mm (2.6 in) over 13 days, accompanied by high humidity levels of 80%. In contrast, June ushers in warmth, boasting a minimum temperature of 10°C (49°F) and a pleasant average of 19°C (67°F), peaking at a striking 32°C (89°F). Despite an increase in precipitation to 101 mm (4.0 in) over the same number of days, humidity rises only slightly to 87%. For a detailed look at the weather during this summer month, check out Sendai weather in June.
In January, the weather is quite cold, with temperatures ranging from a minimum of -10°C (14°F) to a maximum of 11°C (52°F). The average temperature hovers around 0°C (33°F), and the month sees around 65 mm (2.6 in) of precipitation over about 13 days, accompanied by a humidity level of 80%. In stark contrast, July brings significantly warmer conditions, with temperatures varying from a minimum of 15°C (60°F) to a scorching maximum of 35°C (95°F), averaging around 23°C (74°F). The summer month experiences much higher precipitation at 232 mm (9.1 in) over 18 days, and humidity also rises to 92%. For more detailed information about July's weather, visit Sendai weather in July.
The weather in January and August presents a striking contrast. January typically has much colder temperatures, with a range from a chilling -10°C (14°F) to a maximum of 11°C (52°F) and averages around 0°C (33°F). The month sees about 65 mm (2.6 in) of precipitation over 13 days and experiences a humidity level of 80%. In contrast, August boasts significantly warmer temperatures, ranging from a minimum of 14°C (58°F) to a sweltering maximum of 35°C (95°F), with an average of 25°C (77°F). The summer month comes with increased rainfall, totaling 214 mm (8.4 in) across 20 days, and a higher humidity level of 92%. For more details on the summer climate, you can explore Sendai weather in August.
January and September present contrasting weather conditions. In January, temperatures range from a chilly minimum of -10°C (14°F) to a mild maximum of 11°C (52°F), with an average around 0°C (33°F). The month typically sees 65 mm (2.6 in) of precipitation spread over about 13 days, accompanied by a humidity level of 80%. In stark contrast, September boasts a much warmer climate, with temperatures starting at a minimum of 8°C (47°F) and peaking at a hot 33°C (92°F), averaging 21°C (69°F). Precipitation increases to 150 mm (5.9 in) over 14 days, and humidity also rises slightly to 86%. For more detailed information, check Sendai weather in September.
January and October present striking contrasts in weather. In January, temperatures can plunge as low as -10°C (14°F) at night, with an average of 0°C (33°F) and daytime highs reaching up to 11°C (52°F). This chill is accompanied by relatively low precipitation at 65 mm (2.6 in) over 13 days, with humidity sitting at a cool 80%.
In contrast, October experiences milder weather with a minimum temperature of 4°C (39°F) and an average of 15°C (59°F), peaking at a warm 27°C (81°F). The month is significantly wetter, with 208 mm (8.2 in) of rain over 12 days, and humidity slightly higher at 82%. For more details, you can check Sendai weather in October.
When comparing the weather in January and November, January typically presents much colder temperatures, with a minimum of -10°C (14°F) and an average of 0°C (33°F), while November sees milder conditions, with a minimum of -3°C (27°F) and an average of 9°C (48°F). The maximum temperatures in January reach up to 11°C (52°F), compared to November's higher maximum of 21°C (69°F). Precipitation is more frequent in January, occurring over 13 days and totaling 65 mm (2.6 in), whereas November experiences slightly less precipitation at 40 mm (1.6 in) over just 9 days. Humidity levels remain fairly consistent between the two months, with January at 80% and November at 79%. For more specific details on the November weather, you can check Sendai weather in November.
In comparing the weather between January and December, January experiences cooler temperatures, with a minimum of -10°C (14°F) and an average of 0°C (33°F), while December is slightly milder, with a minimum of -5°C (23°F) and an average of 3°C (37°F). Both months have similar precipitation levels, with January receiving about 65 mm (2.6 in) over 13 days and December slightly higher at 67 mm (2.6 in) over 16 days. Humidity remains consistent at 80% for both months, contributing to the overall damp and chilly conditions. For a more detailed look at December's weather, you can visit Sendai weather in December.
January in Sendai is characterized by chilly temperatures and a notable increase in precipitation, setting it apart from the milder months of spring and fall. With an average low hovering around freezing, this month frequently experiences days of frost, making it one of the coldest times of the year. The city's high humidity, often reaching 80%, adds to the brisk feel, while about half the month sees rainy or snowy days, contributing to a total precipitation of 65 mm. As you navigate through January's cool embrace, don’t forget to check out the full seasonal patterns at Sendai Climate for a comprehensive understanding of weather changes throughout the year.