December Weather in Chichibu, Japan

Last updated: August 21, 2025

In December, Chichibu, Japan, offers a brisk and invigorating climate, with average temperatures hovering around 5°C (40°F). The maximum temperature can reach a mild 19°C (67°F), while the thermometer can dip to a chilly minimum of -4°C (24°F). As the month unfolds, residents and visitors alike can expect about 57 mm (2.2 in) of precipitation over 8 days, contributing to the scenic winter landscape. Additionally, relative humidity levels linger at a comfortable 78%, creating a crisp, refreshing atmosphere perfect for outdoor exploration or cozy indoor activities.

December Temperature in Chichibu

In December, Chichibu transitions from the crisp chill of late autumn into the heart of winter, showcasing a range of temperatures that reflect this change. With a minimum temperature dipping to -4°C (24°F), the region experiences a cold spell, yet the average hovers around 5°C (40°F), offering a hint of warmth amidst the frosty backdrop. As the month progresses, daytime highs can reach up to 19°C (67°F), presenting a stark contrast to the colder nights. This gradual decline in temperature starting from November’s higher averages marks December as a month of preparation for winter, allowing both residents and visitors to embrace the serene beauty of Chichibu’s winter landscape while layering up for the chill.

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

The chart illustrates December temperature patterns in Chichibu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chichibu, 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).
JanFebMarAprMayJunJulAugSepOctNovDec363845526266737668594940
Data source: Temperature data for Chichibu generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Chichibu

In December, Chichibu experiences a shift in its precipitation patterns as the year draws to a close. The city records an average of 57 mm (2.2 in) of rainfall over approximately 8 days, mirroring the moderate levels seen in January and November. This seasonal dip follows a significant peak in July, where precipitation can reach a hefty 377 mm (14.8 in), making December's figures feel rather light by comparison. As winter settles in, the precipitation not only decreases but also condenses into more manageable amounts, providing a stark contrast to the abundant summer rains. This trend reflects a broader seasonal transition, leading to drier conditions that embrace the chilly end of the year while setting the stage for the winter months ahead.

December Precipitation Trends in Chichibu

The chart displays monthly precipitation patterns in Chichibu, 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 Chichibu, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec55591521581862453772422853595957
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Chichibu

In Chichibu, Japan, December marks a notable transition in humidity levels, settling at 78% as the year draws to a close. This figure reflects a gentle decline from the peak humidity experienced during the sultry summer months, particularly July's staggering 93%. As the seasons shift from the vibrant warmth of May's 81%, through the cooler autumn months, the humidity begins to stabilize. December's level is slightly elevated compared to the earlier months of the year, hinting at the lingering moisture before winter sets in fully. Overall, the trend illustrates how humidity ebbs and flows across the calendar, peaking in the summer and gradually tapering as winter approaches, while still maintaining a moderately high presence during December.

December Average Humidity in Chichibu

This chart illustrates the average monthly humidity levels in Chichibu, 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 Chichibu is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%74%70%74%82%88%93%90%86%83%80%78%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Chichibu

December in Chichibu, Japan, marks a return to milder UV levels, with the UV Index settling at 4, placing it in the moderate exposure category. This suggests a comfortable burn time of 30 minutes, allowing residents and visitors to relish outdoor activities with minimal risk. As a trend throughout the year, Chichibu experiences peaks during the summer months, notably in May through July, where the UV Index rises to an extreme level of 11 or even 12. However, as winter approaches, levels decrease significantly, providing a welcome respite. For anyone curious about seasonal UV variations and how to protect themselves while enjoying Chichibu’s scenic beauty, detailed information can be found at Chichibu UV Index.

Maximum UV Index Levels in Chichibu for December

The chart shows the monthly maximum UV Index (UVI) for Chichibu 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 Chichibu typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111121110754
Data source: Chichibu 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 Chichibu

In Chichibu, Japan, December greets visitors with a delightful 235 hours of sunshine, perfectly encapsulating the charm of the season. As the year winds down, sunlight levels in Chichibu reflect an interesting trend: the region experiences a gradual increase in sunny hours through the winter months, following the fall. After a dip in July, when sunshine hours reached their lowest at 228 hours, the sun begins to shine brighter again, with November seeing a noteworthy rise to 230 hours. This steady climb culminates in December, showcasing a cozy winter atmosphere bathed in golden light. The month stands out as a transition into the new year, where the promise of renewal is mirrored in the winter sun's warm embrace.

Monthly Sunshine Duration in Chichibu: December Highlighted

The December sunshine duration represents the total number of hours Chichibu 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.
JanFebMarAprMayJunJulAugSepOctNovDec192h236h262h279h284h262h228h276h226h206h230h235h
Data source: Chichibu December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Chichibu During December

In Chichibu, Japan, December brings a promising 68% chance of sunshine, marking a delightful trend as the year draws to a close. This likelihood is notably higher than the sun-soaked days of midsummer, with only 18%-26% chances from June to August. It is also a significant leap from the greyer months of spring and early summer. Interestingly, December's sun chances sit comfortably between November's 57% and January's 59%, suggesting a gradual transition into winter without falling into obscurity. Those looking to enjoy the outdoors can find December an inviting time for exploration, as Chichibu seems to embrace the sun amidst the winter chill.

Percentage of Sunny Days in December in Chichibu

The chart illustrates the percentage of sunny days in Chichibu 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 Chichibu experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec59%71%40%46%22%18%26%25%20%45%57%68%
Data source: Chichibu December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Chichibu in December

As the year winds down in Chichibu, Japan, December brings a noticeable shift in daylight duration, with only 9 hours of sunshine, the least of any month. This reduction follows a gradual tapering off from the longer days of summer, which peak at 14 hours in June and July. From March, when daylight begins to extend beyond 11 hours, there’s a steady decline as autumn unfolds, leading to the shorter, cozy days of winter. The transition illustrates a clear seasonal pattern, emphasizing the contrast between the abundant light of spring and summer and the gentle embrace of winter's early nights.

Average Daylight Hours in Chichibu for December

The chart illustrates the variation in daylight duration in Chichibu throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h10h 51m11h 57m13h 6m14h 4m14h 33m14h 18m13h 28m12h 22m11h 14m10h 15m9h 44m
Data source: Chichibu daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Chichibu

As December settles in Chichibu, Japan, the average wind speed picks up slightly to 2.0 m/s (4 mph), reflecting a subtle change as the year draws to a close. This increase marks a shift from the summer months, where the winds tended to be at their calmest, particularly in July and August, with speeds dipping to around 1.3 m/s (3 mph). The transition into winter brings a refreshing breeze that invigorates the landscape, creating a beautiful contrast to the chilly temperatures. Interestingly, after a steady decline from May through August, the wind shows a gentle resurgence in autumn, suggesting that as nature readies for the colder months, it does so with a playful and rhythmic dance of wind.

Average December Wind Speed in Chichibu

The chart displays monthly wind speed patterns in Chichibu, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.92.32.02.01.71.51.31.41.31.71.72.0 m/s
Data source: Chichibu December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Chichibu Compares to Other Months

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

December and January feature distinctly different weather patterns. In December, temperatures range from a minimum of -4°C (24°F) to a maximum of 19°C (67°F), with an average of 5°C (40°F). The month experiences about 57 mm (2.2 in) of precipitation over 8 days and maintains a humidity level of 78%. In contrast, January sees a marked drop in temperature, with minimums hitting -12°C (10°F) and an average of 2°C (36°F), while the maximum temperature reaches only 16°C (61°F). The precipitation levels remain similar to December, at 55 mm (2.2 in) over the same number of days, but the humidity drops slightly to 76%. For a closer look at January weather specifics, you can refer to Chichibu weather in January.

In comparing December and February weather, December typically sees milder temperatures with a minimum of -4°C (24°F) and an average of 5°C (40°F), while February experiences colder conditions, with minimum temperatures dropping to -12°C (10°F). However, February's maximum temperature can reach up to 21°C (70°F), slightly higher than December's 19°C (67°F). Precipitation levels are quite similar, with December receiving 57 mm (2.2 in) over 8 days and February slightly higher at 59 mm (2.3 in) over 10 days. Humidity levels also remain relatively close, at 78% in December compared to 74% in February. For a more detailed look at February conditions, visit Chichibu weather in February.

In December, temperatures typically range from a low of -4°C (24°F) to a comfortable average of 5°C (40°F), peaking at a mild 19°C (67°F). The month sees around 57 mm (2.2 in) of precipitation across 8 days, coupled with a humidity level of 78%. In contrast, March experiences slightly warmer average temperatures, ranging from -4°C (26°F) to an average of 7°C (45°F), with highs reaching up to 24°C (76°F). However, this month also brings significantly more precipitation at 152 mm (6.0 in) over 14 days, with a lower humidity of 70%. For more detailed insights, check out Chichibu weather in March.

In comparing the weather between December and April, December experiences cooler temperatures with a minimum of -4°C (24°F) and an average of 5°C (40°F), while April showcases a milder climate with a minimum of -2°C (28°F) and an average of 11°C (52°F). The maximum temperature in December reaches only 19°C (67°F), whereas April can see highs of up to 27°C (81°F). Precipitation is also more frequent in April, with 158 mm (6.2 in) recorded over 16 days, compared to December's 57 mm (2.2 in) over just 8 days. Despite the higher rainfall in April, humidity levels remain relatively consistent, with December at 78% and April slightly lower at 74%. For more detailed information, you can check Chichibu weather in April.

December and May present contrasting weather conditions. In December, temperatures range from a chilly minimum of -4°C (24°F) to a mild maximum of 19°C (67°F), with an average of 5°C (40°F). The month sees a total of 57 mm (2.2 in) of precipitation over approximately 8 days, paired with a humidity level of 78%. In stark contrast, May experiences a much warmer climate, where temperatures range between a minimum of 3°C (38°F) and a maximum of 31°C (87°F), with an average of 16°C (62°F). Precipitation increases significantly to 186 mm (7.3 in) across about 17 days, accompanied by a slightly higher humidity level of 81%. For more specific insights on May weather, you can explore Chichibu weather in May.

December and June present stark contrasts in weather. In December, temperatures are typically cooler, with minimums around -4°C (24°F) and an average of 5°C (40°F), while the maximum can reach up to 19°C (67°F). The month experiences moderate precipitation of 57 mm (2.2 in) over about 8 days and humidity levels hover around 78%. In contrast, June brings warmer temperatures, with minimums of 10°C (50°F), averaging 19°C (67°F), and maximums soaring to 31°C (88°F). However, this month is also marked by significantly higher precipitation, totaling 245 mm (9.7 in) across 21 days, along with a rise in humidity to 88%. For those looking to understand June's weather specifics, they can visit Chichibu weather in June.

December and July present stark contrasts in weather conditions. In December, temperatures range from a chilly -4°C (24°F) to a mild 19°C (67°F), with an average of 5°C (40°F). The month experiences 57 mm (2.2 in) of precipitation over 8 days, coupled with a moderate humidity of 78%. In contrast, July brings significantly warmer weather, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 34°C (93°F), averaging around 23°C (74°F). The month is marked by higher precipitation levels of 377 mm (14.8 in) spread over 26 days, along with increased humidity at 93%. For more detailed insights about July weather in Chichibu, check out Chichibu weather in July.

In December, temperatures are considerably colder, with a minimum of -4°C (24°F) and an average of 5°C (40°F), peaking at 19°C (67°F). The month also sees about 57 mm (2.2 in) of precipitation over roughly 8 days, combined with a humidity level of 78%. In stark contrast, August offers a much warmer climate with minimum temperatures around 13°C (56°F) and an average of 25°C (77°F), soaring to a maximum of 35°C (94°F). However, it is much wetter, experiencing 242 mm (9.5 in) of rainfall over 25 days, and a higher humidity of 90%. For those seeking detailed information about August weather, check out Chichibu weather in August.

In December, the weather is significantly colder, with temperatures ranging from a minimum of -4°C (24°F) to a maximum of 19°C (67°F), averaging around 5°C (40°F). The month experiences light precipitation, amounting to 57 mm (2.2 in) over approximately 8 days, and humidity levels hover around 78%. In contrast, September is much warmer, showcasing a minimum temperature of 12°C (53°F) and peaking at 33°C (91°F), with an average of 20°C (69°F). However, it is also much wetter, with a total precipitation of 285 mm (11.2 in) spread over 24 days and higher humidity at 86%. For more detailed information, you can check out Chichibu weather in September.

When comparing the weather in December and October, notable differences emerge in temperature and precipitation. December experiences cooler temperatures, with lows reaching -4°C (24°F) and an average of 5°C (40°F), whereas October boasts milder conditions, with a minimum of 4°C (40°F) and an average of 15°C (59°F) that peaks at 30°C (86°F). In terms of precipitation, December sees 57 mm (2.2 in) over 8 days, while October is significantly wetter, receiving 359 mm (14.1 in) across 21 days. Humidity remains relatively high in both months, at 78% in December and 83% in October. For more detailed insights, you can check out Chichibu weather in October.

In comparing the weather of December to that of November, we see some notable differences. December features slightly colder temperatures, with a minimum of -4°C (24°F) and an average of 5°C (40°F), compared to November's milder minimum of -2°C (29°F) and average of 10°C (49°F). Additionally, December's maximum temperature peaks at 19°C (67°F), while November reaches a warmer 21°C (70°F). Precipitation levels for both months are quite similar, with December receiving 57 mm (2.2 in) over 8 days and November recording 59 mm (2.3 in) over 9 days. Humidity remains fairly consistent, with December at 78% and November slightly higher at 80%. For a more detailed look at November's conditions, you can visit Chichibu weather in November.

Compare Chichibu's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Chichibu

As December arrives in Chichibu, the weather undergoes a noticeable transformation, offering a unique blend of mild temperatures and seasonal charm. With an average temperature hovering around 5°C, the month experiences cooler days compared to the warmer months, while still showcasing the warmer peaks that can reach up to 19°C. The chill in the air, along with 78% humidity, sets the stage for a refreshing atmosphere that brings forth cozy winter vibes. While December sees a modest amount of precipitation over a handful of days, the overall climate remains more stable than the volatile rain of earlier months. For those curious about Chichibu's year-round weather patterns, detailed insights can be found at Chichibu Climate.