December Weather in Tochigi, Japan

Last updated: August 21, 2025

In December, Tochigi, Japan experiences a chilly and inviting winter ambiance, with maximum temperatures reaching 18°C (65°F) and dipping to a minimum of -3°C (26°F). The average temperature hovers around 5°C (42°F), providing a crisp backdrop for the season. Rainfall is moderate, with a total of 54 mm (2.1 in) over about 6 days, while humidity levels linger at a notable 86%, enhancing the freshness in the air. This blend of cool temperatures and occasional precipitation creates a cozy setting perfect for seasonal festivities and winter explorations in Tochigi.

December Temperature in Tochigi

In December, Tochigi, Japan experiences the onset of winter, with temperatures reflecting a notable drop as the year comes to a close. The average temperature sits at a chilly 5°C (42°F), showcasing a transition from the mild autumn months. Minimum temperatures can plummet to -3°C (26°F), while daytime highs reach a more comfortable 18°C (65°F). This trend demonstrates a gradual cooling that began in November, as temperatures dip from the preceding month's 11°C (52°F) average. December's weather invites cozy winter activities, as residents and visitors alike embrace the crisp air and the beautiful snowy landscapes typical of this season in Tochigi.

December Weather in Tochigi: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Tochigi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tochigi, December typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec384047556470778072625241
Data source: Temperature data for Tochigi generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Tochigi

December in Tochigi, Japan, marks the transition into the cooler winter months, with precipitation averaging 54 mm (2.1 in) over just 6 days. This is a notable drop from the heavier rains of the fall, particularly October's 267 mm (10.5 in) and November's 67 mm (2.6 in). As the year closes, December showcases a shift from the intense moisture of summer and early autumn, characteristic of Tochigi's climate. While the precipitation is lighter compared to the preceding months, it still provides a touch of vibrancy to the winter scenery. Despite the reduction in both volume and frequency, this moisture plays an essential role in maintaining the region’s lush landscapes as it braces for the colder season ahead.

December Precipitation Trends in Tochigi

The chart displays monthly precipitation patterns in Tochigi, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Tochigi, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec38431411441601942962182252676754
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Tochigi

In Tochigi, Japan, December marks a transition as humidity levels settle at a comfortable 86%, reflecting a slight decrease from the high of 92% seen in the peak summer months of July and August. This time of year showcases a gradual downward trend, moving from the moist conditions of earlier months, with January starting high at 88%. While the winter months typically bring lower humidity levels overall, Tochigi retains a relatively humid climate compared to many regions, making December feel cool yet refreshing. As the year closes, residents can expect a harmonious blend of crisp air and lingering moisture, characteristic of the Japanese winter.

December Average Humidity in Tochigi

This chart illustrates the average monthly humidity levels in Tochigi, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Tochigi is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%79%81%88%92%92%89%87%85%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Tochigi

In Tochigi, Japan, the UV Index exhibits notable seasonal fluctuations throughout the year. Starting from January with a moderate UV Index of 3, residents experience relatively safe sun exposure, allowing for a burn time of 30 minutes. As spring approaches, the index climbs, reaching 7 in March and peaking in May at a striking 10, indicating very high exposure levels that demand caution with only 15 minutes of unprotected sun exposure. The trend continues, reaching an extreme peak of 11 in both June and July, before gradually decreasing through the late summer and autumn months. By December, the UV Index falls back to 3, mirroring the early winter months, making it a comfortable time for outdoor activities. This pattern showcases the dramatic shifts in UV intensity, highlighting the importance of sun safety year-round. For more detailed information, check the Tochigi UV Index.

Maximum UV Index Levels in Tochigi for December

The chart shows the monthly maximum UV Index (UVI) for Tochigi in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Tochigi typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109653
Data source: Tochigi December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

December Sunshine in Tochigi

In Tochigi, Japan, the month of December brings a pleasant continuation of sunlight, with 231 hours of sunshine gracing the shorter days. This modest total reflects a trend where the cold winter months still manage to capture a remarkable amount of light, maintaining a spirit of warmth even as temperatures dip. Interestingly, after peaking in the vibrant months of spring and early summer—with May shining at 278 hours—the sunshine gradually decreases but remains relatively consistent through late autumn and early winter. December’s sunshine serves as a gentle reminder of nature's ability to offer brightness during the colder season, making it an inviting time to enjoy the scenic beauty of Tochigi.

Monthly Sunshine Duration in Tochigi: December Highlighted

The December sunshine duration represents the total number of hours Tochigi experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec190h238h264h277h278h262h227h269h224h207h232h231h
Data source: Tochigi December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Tochigi During December

In Tochigi, Japan, December brings a relatively high 67% chance of sunny weather, marking a promising shift as the year wraps up. This month stands out against the backdrop of late autumn, where November recorded a respectable 62%, and the preceding months typically saw lower sunshine probabilities. While spring months like February lead the way at 70%, December's likelihood indicates a trend towards clearer skies as winter approaches. This increase in sunny days could entice residents and visitors alike to enjoy the outdoors before the chill of January settles in.

Percentage of Sunny Days in December in Tochigi

The chart illustrates the percentage of sunny days in Tochigi throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Tochigi experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec53%70%41%48%24%19%24%24%23%45%62%67%
Data source: Tochigi December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Tochigi in December

As the year in Tochigi, Japan, unfolds, the daylight duration weaves a captivating pattern of change. Starting from 9 hours of daylight in January, the days begin to stretch gradually, reaching a peak of 14 hours in both May and June. This vibrant increase is followed by a gentle decline as summer transitions into autumn, with daylight returning to 10 hours in November. Finally, December mirrors January's shorter days, closing the year at 9 hours once again. This rhythmic ebb and flow of light not only marks the seasons but also brings a unique charm to Tochigi’s landscape throughout the year.

Average Daylight Hours in Tochigi for December

The chart illustrates the variation in daylight duration in Tochigi throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 58m10h 50m11h 57m13h 7m14h 5m14h 35m14h 20m13h 29m12h 23m11h 14m10h 13m9h 42m
Data source: Tochigi daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Tochigi

As December settles over Tochigi, Japan, the winds begin to pick up slightly, averaging 2.2 m/s (5 mph). This subtle increase marks a contrast to the calmer summer months, where July experiences its lowest gusts at just 1.4 m/s (3 mph). The gradual uptick in wind speeds from November to December hints at a seasonal transition, as cooler temperatures invite breezier conditions. Overall, from the peak of winter's breath in January, with winds averaging 2.0 m/s (4 mph), it’s clear that December serves as a bridge, gently stirring the air as the year draws to a close.

Average December Wind Speed in Tochigi

The chart displays monthly wind speed patterns in Tochigi, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.02.62.32.22.01.81.41.91.71.81.72.2 m/s
Data source: Tochigi December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Tochigi Compares to Other Months

Weather in Tochigi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Tochigi, focusing on differences in temperature, rainfall, humidity, and UV levels.

December and January show distinct weather patterns as winter deepens. In December, temperatures range from a minimum of -3°C (26°F) to a maximum of 18°C (65°F), with an average of 5°C (42°F). The month sees 54 mm (2.1 in) of precipitation over 6 days and maintains a humidity level of 86%. In contrast, January experiences colder temperatures, with a minimum of -12°C (11°F) and a slightly reduced maximum of 16°C (60°F), leading to an average temperature of 3°C (38°F). Precipitation drops to 38 mm (1.5 in) over 5 days, while humidity remains relatively high at 88%. For more details on January's climate, you can check Tochigi weather in January.

December and February both exhibit relatively cool temperatures, but February tends to be slightly colder overall. In December, the temperatures range from a minimum of -3°C (26°F) to a maximum of 18°C (65°F), resulting in an average of 5°C (42°F). In contrast, February experiences even lower minimum temperatures at -6°C (22°F), with a slightly higher average of 4°C (40°F) and maximums reaching 20°C (69°F).

While December sees a bit more precipitation at 54 mm (2.1 in) over 6 days compared to February's 43 mm (1.7 in) on the same number of days, both months share a high humidity level of 86%. For a closer look at February weather specifics, you can visit Tochigi weather in February.

In December, the weather is generally cooler, with temperatures ranging from a minimum of -3°C (26°F) to a maximum of 18°C (65°F) and an average of 5°C (42°F). The month also experiences about 54 mm (2.1 in) of precipitation over approximately 6 days, coupled with high humidity at 86%. In contrast, March brings milder temperatures, with minimums dipping to -5°C (24°F) and maximums reaching 23°C (74°F), averaging 8°C (47°F). Precipitation increases significantly to 141 mm (5.5 in) across 11 days, while humidity slightly decreases to 81%. For a more detailed look at the weather in March, you can visit Tochigi weather in March.

In December, the weather is significantly colder, with temperatures ranging from a minimum of -3°C (26°F) to a maximum of 18°C (65°F), and an average temperature of 5°C (42°F). The month experiences relatively low precipitation of 54 mm (2.1 in) over 6 days, accompanied by high humidity levels at 86%. In stark contrast, April brings milder and more variable weather, with a minimum temperature of -1°C (31°F) and a maximum temperature soaring to 28°C (83°F), leading to an average temperature of 13°C (55°F). However, April is considerably wetter, with 144 mm (5.7 in) of precipitation spread over 13 days and a lower humidity of 78%. This variation highlights the transition from the chill of winter to the more temperate spring conditions. For a detailed overview, you can check Tochigi weather in April.

In December, Tochigi experiences a cooler climate, with temperatures ranging from a chilly -3°C (26°F) at night to a mild average of 5°C (42°F) during the day, peaking at 18°C (65°F). The month sees lower humidity at 86%, coupled with moderate precipitation of 54 mm (2.1 in) over 6 days. In contrast, May brings a significant warmth, with temperatures beginning at a milder 4°C (40°F) and soaring to an average of 18°C (65°F), reaching a high of 32°C (91°F). The month is wetter, with 160 mm (6.3 in) of rain falling across 15 days and slightly less humidity at 81%. For more details on the weather in Tochigi during May, visit Tochigi weather in May.

December and June in Tochigi exhibit stark contrasts in weather. December experiences cooler temperatures, with a minimum of -3°C (26°F) and an average of 5°C (42°F), while June enjoys milder conditions with temperatures ranging from a minimum of 11°C (52°F) to an average of 21°C (70°F). Additionally, June is notably wetter, receiving 194 mm (7.6 in) of precipitation over 19 days, compared to December's 54 mm (2.1 in) across just 6 days. Both months also share high humidity levels, with December at 86% and June slightly higher at 88%. For more details on weather conditions in June, check Tochigi weather in June.

December and July present stark contrasts in weather. In December, temperatures range from a chilly -3°C (26°F) to a mild 18°C (65°F), with an average of 5°C (42°F). The month sees relatively low precipitation, totaling 54 mm (2.1 in) over just 6 days, and a humidity level of 86%. In contrast, July boasts significantly warmer temperatures, with minimums of 17°C (63°F) and maximums reaching up to 35°C (96°F), averaging around 25°C (77°F). However, July is also much wetter, receiving 296 mm (11.6 in) of rain over 25 days, and higher humidity at 92%. For more details, you can check out Tochigi weather in July.

December and August present starkly contrasting weather conditions. In December, temperatures range significantly from a chilly -3°C (26°F) at night to a milder average of 5°C (42°F) during the day, with occasional peaks up to 18°C (65°F). In contrast, August boasts much warmer temperatures, with minimums around 15°C (59°F) and averages climbing to 26°C (80°F), peaking at a sweltering 36°C (96°F). Additionally, December experiences relatively low precipitation with only 54 mm (2.1 in) over about six days, while August sees a substantial increase, averaging 218 mm (8.6 in) across 22 days. Both months maintain high humidity, around 86% in December and slightly higher at 92% in August. For more details on the weather in August, you can visit Tochigi weather in August.

When comparing the weather in December and September, notable differences emerge. December typically experiences much cooler temperatures, with a minimum of -3°C (26°F) and an average of 5°C (42°F), while September enjoys milder conditions, featuring a minimum of 12°C (53°F) and an average of 22°C (72°F). Additionally, September is significantly wetter, receiving about 225 mm (8.8 in) of precipitation over 22 days, compared to December's 54 mm (2.1 in) over just 6 days. Humidity levels are also slightly higher in September at 89%, compared to December's 86%. For more detailed information on September weather, you can visit Tochigi weather in September.

In comparing the weather between December and October, December tends to be significantly cooler, with average temperatures ranging from a low of -3°C (26°F) to a maximum of 18°C (65°F), while October experiences much milder conditions with temperatures from a minimum of 4°C (39°F) to a maximum of 31°C (87°F). Additionally, December sees considerably less precipitation, with only 54 mm (2.1 in) over 6 days, compared to October's much wetter climate, which brings 267 mm (10.5 in) of rain across 17 days. Both months showcase high humidity levels, with December at 86% and October slightly higher at 87%. For further details, you can check Tochigi weather in October.

In December, temperatures start to drop, with a minimum of -3°C (26°F) and an average of 5°C (42°F), compared to November, which boasts a slightly warmer average of 11°C (52°F) and a maximum of 23°C (73°F). Precipitation decreases from 67 mm (2.6 in) over 8 days in November to 54 mm (2.1 in) over just 6 days in December, indicating a shift toward drier conditions. Humidity levels remain quite similar, with December at 86% and November at 85%, but the overall cooler temperatures in December create a markedly different feel. For more details on November's weather specifics, you can check Tochigi weather in November.

Compare Tochigi's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Tochigi

As December arrives in Tochigi, the weather shifts notably, transitioning from the milder temperatures of fall to the cooler embrace of winter. While the days can peak at a comfortable 18°C, the average temperature dips significantly, reminding residents of the season ahead. With an average humidity of 86% and about six days of precipitation, this month often feels particularly brisk and damp. Snowfall may become a looming possibility as temperatures flirt with the freezing mark, making it a distinct departure from the more temperate months prior. For more insights into Tochigi's weather throughout the year, explore the Tochigi Climate.