Last updated: August 21, 2025
December in Oshu, Japan, presents a fascinating blend of winter elements. With daily average temperatures hovering around 1°C (33°F), it’s a season where the highs can reach a mild 14°C (58°F) while the lows plunge to a chilly -10°C (14°F). This month sees a precipitation total of 78 mm (3.1 in) spread across approximately 17 rainy days, contributing to an overall humidity level of about 80%. Be prepared for a distinctive chilly atmosphere that characterizes this picturesque locale during the festive season.
In Oshu, Japan, December marks the transition into the deeper chill of winter, with temperatures showing a distinct drop compared to the milder months preceding it. The month starts off with minimum temperatures plummeting to around -10°C (14°F), while the average hovers just above freezing at 1°C (33°F). Daytime highs can reach a comfortable 14°C (58°F), providing brief respite from the cold. This month transitions smoothly from November's cooler averages, but the plunge into winter is palpable, signaling the need for warmer clothing and cozy indoor activities as the snowy landscapes begin to take shape. Overall, December in Oshu encapsulates the essence of winter's approach, blending crisp air with the charm of seasonal festivities.
In December, Oshu experiences a notable shift in weather patterns, with precipitation levels reaching 78 mm (3.1 in) across 17 days of rain. This increase in rainfall compared to November's 56 mm (2.2 in) marks the onset of winter, hinting at a transition towards the wetter months ahead. The heavy rains of summer and autumn, which peak in July and August, give way to a steadier, albeit lighter, precipitation as the year closes. December's rainfall, while more subdued than the summer months, still reflects the region's overall trend of increasing moisture during the season, preparing the landscape for the chill of winter.
In December, Oshu, Japan experiences a humidity level of 80%, maintaining a consistency that reflects the region's overall moisture trends. As the year progresses from the drier months of April and May, when humidity dips to 75%, the latter half sees a noticeable rise, peaking in the summer months of July and August at a humid 92%. While December’s humidity mirrors that of January, it signifies the transition into winter where moisture persists in the air, hovering around the 80% mark. This trend illustrates a climatic rhythm, where humidity swells with the seasons, culminating in a comforting yet damp end to the year in Oshu.
In December, Oshu, Japan experiences a moderate UV Index of 3, with a burn time of approximately 30 minutes. This marks a noticeable drop from the heights of summer, where the UV Index peaked at a ten during the warmer months of June, July, and August, prompting the need for more vigilant sun protection. As the year winds down, UV exposure becomes less intense, transitioning back to moderate levels similar to those observed at the beginning of the year in January. This seasonal pattern highlights the importance of adjusting sun safety measures to correspond with the changing UV levels throughout the year. For more detailed information, visit Oshu UV Index.
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In Oshu, Japan, December brings a subtle glow with 199 hours of sunshine, marking a gentle transition into winter. As the year winds down, daylight hours start to dip from the vibrant peaks of spring and summer, where May boasts an impressive 290 hours. Notably, December's sunlight is part of a gradual decline seen since the sunny months of April and May. However, the steady decline is softened by a respectable amount of sunshine that still bathes the city, offering a warm respite during the colder season. This trend highlights Oshu’s unique charm, where even in the height of winter, a touch of sunshine continues to grace the landscape, inviting locals and visitors alike to embrace the serene beauty of the season.
As December approaches in Oshu, Japan, the likelihood of sunny weather stands at 32%, mirroring the sunniest months of January and March. This alignment with earlier winter days suggests a blend of crisp air and occasional bright spells, typical of the season. Notably, November enjoys a comparatively higher chance of sunshine at 41%, which implies that the transition into December could see a slight dip in sunny days. Overall, while December might not boast the sunniest disposition, it offers a refreshing winter charm that invites moments of sunlight amidst the cool, crisp winds.
As the year draws to a close, December in Oshu, Japan, brings back the familiar embrace of shorter days, with daylight lasting about 9 hours. This marks a return to the daylight duration observed in January, following a gradual increase from the winter solstice. From the crisp days of early spring in March, when sunlight extends to 11 hours, to the vibrant, sun-drenched afternoons of May and June, which offer a peak of 14 hours, Oshu experiences a rhythmic ebb and flow of daylight throughout the year. As summer transitions into autumn, daylight gradually wanes, offering a gentle reminder that nature operates in cycles. By the time December arrives, the cycle completes, with daylight dwindling once more to the cozy confines of winter, setting the stage for reflection and rest during the colder months ahead.
As December unfolds in Oshu, Japan, the wind begins to pick up, averaging 2.9 m/s (6 mph), which signals the transition toward the cooler months ahead. This slight increase follows a gradual dip in wind speed from the summer's low in July, where breezes barely stirred at 1.8 m/s (4 mph). Interestingly, December's winds mark a contrast to the calmer months, hinting at a shift in seasonal dynamics. With the winds steadily increasing from November’s 2.3 m/s (5 mph), it seems that winter is poised to assert its presence, ushering in a crisp atmosphere that complements the festive spirit of the season. Overall, December encapsulates the gradual return of more spirited winds, setting the stage for a serene yet vibrant winter in this charming region.
Weather in Oshu varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Oshu, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January present a stark contrast in weather for the region. In December, temperatures range from a chilly -10°C (14°F) at night to a mild 14°C (58°F) during the day, averaging around 1°C (33°F). Precipitation is relatively high, with 78 mm (3.1 in) spread over 17 days, and humidity remains constant at 80%.
In contrast, January experiences even colder conditions, with minimum temperatures dropping to -22°C (-8°F) and a maximum average of only 7°C (45°F). While precipitation decreases to 56 mm (2.2 in) over 12 days, humidity stays the same at 80%. For those interested in exploring the specifics of January in Oshu, more details can be found here: Oshu weather in January.
December and February display notable differences in weather patterns. In December, temperatures range from a minimum of -10°C (14°F) to a maximum of 14°C (58°F), with an average of 1°C (33°F). The month experiences 78 mm (3.1 in) of precipitation over 17 days, coupled with high humidity at around 80%. In contrast, February is colder, with temperatures dropping to a minimum of -18°C (0°F), averaging -1°C (31°F), and peaking at 11°C (52°F). Precipitation is slightly lower at 69 mm (2.7 in) over 14 days, with humidity levels remaining similar at 79%. For more details, you can check Oshu weather in February.
December and March present contrasting weather patterns, marked by variations in temperature and precipitation. In December, temperatures range from a chilly -10°C (14°F) at night to a mild average of 1°C (33°F) during the day, culminating in a maximum of 14°C (58°F). The month brings significant precipitation, averaging 78 mm (3.1 in) over 17 days, coupled with high humidity levels at 80%. In contrast, March experiences slightly colder nights with a minimum of -12°C (11°F) but generally warmer days with an average of 4°C (39°F) and a maximum of 20°C (68°F). Although March sees higher total precipitation at 106 mm (4.2 in) over 14 days, humidity remains a bit lower at 77%. For more details on the specific weather trends in March, you can visit Oshu weather in March.
December weather presents a chillier landscape, with temperatures ranging from a minimum of -10°C (14°F) to a maximum of 14°C (58°F) and an average around 1°C (33°F). The month experiences considerable precipitation, totaling 78 mm (3.1 in) over 17 days, accompanied by a high humidity level of 80%. In contrast, April brings a milder climate, with temperatures ranging from -6°C (21°F) to a pleasant maximum of 25°C (77°F), averaging 8°C (47°F). Although April sees slightly more precipitation at 119 mm (4.7 in) across 15 days, the overall humidity is lower at 75%. For more details on April conditions, check out Oshu weather in April.
December and May offer contrasting weather patterns. In December, temperatures range from a chilly -10°C (14°F) at night to a mild 14°C (58°F) during the day, with an average temperature of around 1°C (33°F). This month experiences significant precipitation of 78 mm (3.1 in) over 17 days, coupled with consistent humidity levels at 80%. In contrast, May sees a more temperate climate, with temperatures soaring from a minimum of 3°C (38°F) to a maximum of 30°C (87°F) and an average temperature of 14°C (58°F). Despite a slightly higher total precipitation of 114 mm (4.5 in) over 13 days, May still feels fundamentally different, as the warmth and flowering nature of spring bring a welcome respite from the winter chill. For more specific details about weather conditions, you can visit Oshu weather in May.
December and June present stark contrasts in weather. In December, temperatures can plunge as low as -10°C (14°F), with an average of just 1°C (33°F) and a maximum of 14°C (58°F). The month is marked by relatively high humidity at 80% and experiences precipitation over 17 days, totaling 78 mm (3.1 in). In contrast, June brings warmer conditions, with minimum temperatures around 7°C (44°F) and average highs reaching 30°C (87°F). This month also sees increased precipitation, amounting to 129 mm (5.1 in) over 14 days, and a slight rise in humidity to 87%. For more details on June weather, visit Oshu weather in June.
December and July present striking contrasts in weather. In December, temperatures range from a chilly -10°C (14°F) at night to a mild 14°C (58°F) during the day, with an average of 1°C (33°F). The month sees about 78 mm (3.1 in) of precipitation spread across 17 days, coupled with a humidity level of 80%. In stark comparison, July features much warmer temperatures, with nighttime lows of 14°C (57°F) and daytime highs reaching 33°C (92°F), yielding an average of 22°C (72°F). This summer month experiences higher rainfall, totaling 182 mm (7.2 in) over the same 17 days, and higher humidity at 92%. For more specifics on July weather patterns, you can check out Oshu weather in July.
December and August present strikingly different weather conditions. In December, temperatures plunge, with a minimum of -10°C (14°F) and an average around 1°C (33°F), while August enjoys much milder weather, with a minimum of 10°C (51°F) and an average of 23°C (74°F). Precipitation also differs significantly; December sees 78 mm (3.1 in) spread over 17 days, compared to August's heavier rainfall of 167 mm (6.6 in) over 18 days. Additionally, humidity levels are higher in August at 92%, compared to December's 80%. For more detailed insights on how August weather looks in Oshu, check out Oshu weather in August.
December and September present distinctly different weather patterns. In December, temperatures can drop as low as -10°C (14°F), with an average around 1°C (33°F) and a maximum of 14°C (58°F). The month also sees considerable precipitation, totaling 78 mm (3.1 in) over 17 days, accompanied by high humidity at 80%. In contrast, September boasts much warmer conditions, with minimum temperatures of 4°C (39°F) and averages reaching 19°C (67°F), peaking at a scorching 33°C (91°F). This month experiences even higher rainfall than December, with 117 mm (4.6 in) falling over 12 days, and humidity levels slightly higher at 86%. For more details about the weather in September, you can check Oshu weather in September.
December weather is marked by colder temperatures, with a minimum of -10°C (14°F) and an average of 1°C (33°F), whereas October enjoys milder conditions, ranging from a minimum of 0°C (33°F) to an average of 13°C (55°F). The maximum temperature in December peaks at 14°C (58°F), significantly lower than October's maximum of 27°C (80°F). Precipitation levels in December are lower at 78 mm (3.1 in) over 17 days, compared to October's wetter conditions, which see 154 mm (6.1 in) over just 12 days. Humidity levels are quite similar in both months, hovering around 80% in December and 82% in October. For more details on October’s weather patterns, you can visit Oshu weather in October.
In comparing the weather between November and December, December tends to be colder with a minimum temperature dropping to -10°C (14°F) compared to November's milder low of -4°C (24°F). The average temperature in December is also lower at 1°C (33°F), whereas November boasts a more comfortable average of 6°C (44°F). Precipitation rises in December to 78 mm (3.1 in) over 17 days, contrasted with November’s 56 mm (2.2 in) over 10 days, indicating a trend towards wetter conditions as the year ends. Humidity levels remain relatively similar in both months, with December at 80% and November at 79%. For more detailed information, you can check Oshu weather in November.
As December settles in Oshu, the weather takes on a decidedly chillier character compared to the milder months preceding it. Temperatures dip, with cold snaps often pushing the mercury to its lowest readings of the year, creating a stark contrast to the fall's warmth. In addition to the colder temperatures, the month is quite wet, with frequent precipitation that keeps the humidity levels high. This combination of cool air and damp conditions means you'll want to bundle up and prepare for an undeniable winter atmosphere. To delve deeper into the year-round climate in Oshu, visit Oshu Climate.