December Weather in Tokyo, Japan

Last updated: August 21, 2025

Experience Tokyo in December, a month where the city transitions into a crisp winter atmosphere. Daytime temperatures can reach a pleasant 21°C (70°F), while the average hovers around 8°C (46°F), dipping to a chilly -2°C (28°F) at night. With 56 mm (2.2 in) of precipitation spread over 7 days, light rain can be expected, adding a touch of sparkle to the city's festive decorations. The relative humidity stands at 78%, creating a refreshing yet cool environment perfect for exploring Tokyo’s vibrant streets adorned with winter lights. Dress warmly and enjoy the unique charm of this bustling metropolis during the holiday season!

December Temperature in Tokyo

In December, Tokyo experiences a notable shift as temperatures dip, heralding the arrival of winter. With a minimum of -2°C (28°F) and an average of 8°C (46°F), the city feels the chill, while daytime highs reach around 21°C (70°F). This month marks a transition from the milder temperatures of November, where the average was 13°C (56°F), to the brisk conditions that January has in store. Tokyoites and visitors alike embrace this seasonal change, often enjoying festive illuminations against a backdrop of cooler air, making December a magical time in this vibrant metropolis.

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

The chart illustrates December temperature patterns in Tokyo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tokyo, 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).
JanFebMarAprMayJunJulAugSepOctNovDec414351586773798375665646
Data source: Temperature data for Tokyo 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 Tokyo

As December unfolds in Tokyo, the city experiences a relatively mild downturn in precipitation, receiving 56 mm (2.2 in) of rain over about 7 days, marking it as one of the drier months of the year. This slight decrease in rainfall is a continuation of the autumn pattern observed in November, where 77 mm (3.0 in) fell across 9 days. While the month doesn’t bring the heavy rains typical of the summer months, it contributes to the overall trend of decreasing precipitation since the peak of the wet season in July, which saw an impressive 221 mm (8.7 in). December's weather is characterized by crisp air and fewer rainy days, providing residents and visitors a chance to enjoy the festive atmosphere, free from the persistent downpours seen earlier in the year.

December Precipitation Trends in Tokyo

The chart displays monthly precipitation patterns in Tokyo, 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 Tokyo, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec46411321171111522211031862737756
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Tokyo

As winter settles in Tokyo, December sees a relative drop in humidity to 78%, following the steamy summer months that peak at a sweltering 93% in July. The year begins with high humidity levels, consistently above 70%, peaking during the hot and humid summer. As the seasons transition into fall, humidity levels ease somewhat, but they remain notably elevated, particularly in the lush months of May and June. Despite a slight decrease in December compared to November's 80%, the city retains a comfortable level of moisture in the air, making it a hallmark of Tokyo's climate as the year draws to a close.

December Average Humidity in Tokyo

This chart illustrates the average monthly humidity levels in Tokyo, 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 Tokyo 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 Tokyo

In December, Tokyo experiences a moderate UV Index of 4, resulting in a burn time of 30 minutes for most skin types. This marks a decline from the extreme levels reached in the summer months, where indices hovered around 11, allowing only a brief 10-minute exposure without risk of sunburn. As the year transitions from harsher UV conditions in May through September, the decrease to a more manageable level in December shows a gradual shift toward weaker sun rays. This trend highlights the importance of adapting sun safety practices throughout the year, especially as Tokyo moves into the winter months. For a detailed guide on UV levels in the city, visit Tokyo UV Index.

Maximum UV Index Levels in Tokyo for December

The chart shows the monthly maximum UV Index (UVI) for Tokyo 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 Tokyo typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35891111111110754
Data source: Tokyo 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 Tokyo

In Tokyo, December experiences a notable decline in daylight, contributing to a total of 231 sunshine hours. This figure aligns closely with the preceding month, November, which also boasted 231 hours of sunlight, hinting at a gradual transition into the winter months. While the city's sunlight hours peak during the warmer seasons, particularly in May and August, December's count remains consistent, suggesting that even as the year winds down, Tokyo's charm continues to shine through the winter haze. This enduring brightness, amidst colder temperatures, paints a serene picture of urban life in December, inviting both locals and visitors to bask in the fleeting rays while appreciating the city's vibrant winter spirit.

Monthly Sunshine Duration in Tokyo: December Highlighted

The December sunshine duration represents the total number of hours Tokyo 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.
JanFebMarAprMayJunJulAugSepOctNovDec191h233h260h273h285h262h234h288h235h202h231h231h
Data source: Tokyo December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Tokyo During December

December in Tokyo brings a promising likelihood of sunny weather, with a 65% chance of sunshine that outshines many of the preceding months. This increase follows a gradual upward trend from November’s 59%, signaling a shift towards clearer skies as the year winds down. Notably, as temperatures cool and festive cheer fills the air, December stands out amid a typically gray winter season, allowing residents and visitors to enjoy crisp, sunlit days. As daylight wanes and the holiday spirit ascends, those in Tokyo can look forward to a brighter end to the year.

Percentage of Sunny Days in December in Tokyo

The chart illustrates the percentage of sunny days in Tokyo 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 Tokyo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec54%69%42%48%24%23%31%35%26%49%59%65%
Data source: Tokyo December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Tokyo in December

As December rolls into Tokyo, daylight gradually diminishes, marking the end of the year with only 9 hours of sunlight. This trend highlights a steady decline in daylight from the longer days of summer, where the city enjoyed up to 14 hours in June and July. As the seasons change, daylight hours are noticeably reduced, with November also offering just 10 hours. This pattern of decreasing light not only signals the onset of winter but also serves as a reminder of the cyclical nature of time, as Tokyo prepares to welcome the new year with a gradual return to longer days.

Average Daylight Hours in Tokyo for December

The chart illustrates the variation in daylight duration in Tokyo 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 5m14h 3m14h 31m14h 17m13h 27m12h 22m11h 15m10h 16m9h 45m
Data source: Tokyo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Tokyo

As December envelops Tokyo, the average wind speed reaches a pleasant 3.4 m/s (8 mph), similar to the brisk October breezes. This slight uptick reflects a seasonal shift from the calmness of November, where winds taper to 2.8 m/s (6 mph). Throughout the year, Tokyo experiences a dynamic range of winds, peaking in May with an invigorating 4.2 m/s (9 mph), which makes for an inviting atmosphere just before the humidity of summer takes hold. Interestingly, the late autumn months see a drop in wind speed, but December marks a resurgence reminiscent of the autumn's refreshing gusts. This steady, yet mild wind in December creates a unique charm, enhancing the winter landscape while inviting locals and visitors alike to enjoy the city's serene beauty.

Average December Wind Speed in Tokyo

The chart displays monthly wind speed patterns in Tokyo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.13.84.03.84.23.12.63.83.23.42.83.4 m/s
Data source: Tokyo December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Tokyo Compares to Other Months

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

In December, temperatures in Tokyo range from a minimum of -2°C (28°F) to a maximum of 21°C (70°F), with an average temperature of 8°C (46°F). The month experiences about 56 mm (2.2 in) of precipitation over approximately 7 days, and humidity levels hover around 78%. In contrast, January sees a drop in temperatures, with minimums plummeting to -8°C (18°F) and maximums decreasing to 18°C (65°F), resulting in an average temperature of 5°C (41°F). January also has slightly less precipitation, at 46 mm (1.8 in) over 5 days, and a marginally lower humidity of 76%. For a more detailed look at this month’s weather, check out Tokyo weather in January.

December and February in Tokyo exhibit similar weather patterns, but with some notable differences. In December, temperatures range from a minimum of -2°C (28°F) to a maximum of 21°C (70°F), with an average of 8°C (46°F). Precipitation is slightly higher in December at 56 mm (2.2 in) over 7 days, contributing to a humidity level of 78%. In contrast, February sees a slightly cooler temperature range, with a minimum of -3°C (26°F) and a maximum of 20°C (69°F), averaging 6°C (43°F). Precipitation decreases to 41 mm (1.6 in) while maintaining the same frequency of rainy days. Humidity in February is also lower, at 74%. For more detailed insights on February weather, you can visit Tokyo weather in February.

December and March present distinct weather contrasts. In December, temperatures range from a chilly -2°C (28°F) to a mild 21°C (70°F), with an average of 8°C (46°F). The month sees about 56 mm (2.2 in) of precipitation over 7 days, coupled with relatively high humidity at 78%. In comparison, March experiences slightly cooler minimum temperatures, also at -2°C (28°F), but an increase in average temperature to 10°C (51°F) and a maximum of 23°C (73°F). The precipitation in March is notably higher at 132 mm (5.2 in), spread over 12 days, and humidity is lower at 70%. For a closer look at the specifics, check out Tokyo weather in March.

In December, temperatures tend to be cooler, with a minimum of -2°C (28°F) and an average of 8°C (46°F), while it peaks at a mild 21°C (70°F). The month experiences a humidity level of 78% and sees about 56 mm (2.2 in) of precipitation over approximately 7 days. In contrast, April brings a noticeable warmth with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 27°C (80°F) and an average of 14°C (58°F). While April has slightly lower humidity at 74%, it experiences a higher precipitation level of 116 mm (4.6 in) over about 10 days. For more detailed insights, you can check out Tokyo weather in April.

In December, the weather is generally cooler, with temperatures ranging from a chilly -2°C (28°F) at night to a mild 21°C (70°F) during the day, leading to an average of 8°C (46°F). The month sees moderate rainfall with about 56 mm (2.2 in) over 7 days and humidity levels around 78%. In contrast, May experiences a significant temperature increase, starting at a minimum of 8°C (46°F) and soaring up to a warm 31°C (88°F), resulting in an average temperature of 20°C (68°F). Precipitation is also higher in May, totaling 111 mm (4.4 in) across 11 days, accompanied by slightly higher humidity at 81%. For more detailed information, you can check Tokyo weather in May.

In December, the weather is quite cool, with temperatures ranging from a frigid minimum of -2°C (28°F) to a mild maximum of 21°C (70°F). The month sees an average temperature of around 8°C (46°F) and experiences about 56 mm (2.2 in) of precipitation over approximately 7 days, contributing to a relatively high humidity of 78%.

Conversely, June brings significantly warmer conditions, with temperatures ranging from a comfortable minimum of 15°C (58°F) to a scorching maximum of 33°C (92°F). The average temperature in June reaches 23°C (73°F), and the month is notably wetter, receiving 152 mm (6.0 in) of rainfall across 13 days. The humidity level also rises to 88%, creating a more tropical atmosphere. For more details, check out Tokyo weather in June.

In December, temperatures in Tokyo range from a chilly -2°C (28°F) at night to a mild 21°C (70°F) during the day, with an average of 8°C (46°F). The month sees around 56 mm (2.2 in) of precipitation over approximately 7 days, accompanied by a humidity level of 78%. In contrast, July experiences significantly warmer weather, with minimum temperatures around 18°C (64°F) and highs reaching up to a scorching 39°C (103°F), averaging 26°C (79°F). Precipitation in July is much higher at 221 mm (8.7 in), occurring over 17 days, and humidity also rises to a steamy 93%. For more details, check out Tokyo weather in July.

December and August present starkly contrasting weather conditions. In December, temperatures range from a chilly -2°C (28°F) at night to a mild 21°C (70°F) during the day, with an average of 8°C (46°F). This month experiences 56 mm (2.2 in) of precipitation over about 7 days, coupled with a humidity level of 78%. In contrast, August boasts much warmer temperatures, with a minimum of 18°C (65°F) and a sweltering maximum of 36°C (98°F), averaging 28°C (83°F). Precipitation in August is higher, totaling 103 mm (4.1 in) spread over approximately 12 days, and humidity reaches 90%. For more detailed information, you can check Tokyo weather in August.

December weather is characterized by much cooler temperatures, with a minimum around -2°C (28°F) and an average high of only 21°C (70°F), making it significantly chillier than September. In contrast, September enjoys warmer conditions, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 35°C (96°F), creating a stark difference in warmth. Additionally, December experiences lower precipitation levels, totaling 56 mm (2.2 in) over about 7 days, while September is much wetter, with 186 mm (7.3 in) of rainfall spread over 16 days. The humidity is slightly higher in September at 86% compared to December's 78%, which can affect the overall comfort levels during these months. For a more detailed look at September weather specifics, check out Tokyo weather in September.

In December, temperatures in the region drop significantly compared to October, with minimums reaching -2°C (28°F) and average highs of only 21°C (70°F). In contrast, October offers much warmer conditions, with daytime averages around 19°C (66°F) and maximum temperatures soaring up to 31°C (88°F). Additionally, December experiences considerably less rainfall, averaging 56 mm (2.2 in) over 7 days, whereas October is much wetter, with 273 mm (10.7 in) spread across 15 days, resulting in higher humidity levels at 83%. For more insights, you can check Tokyo weather in October.

In comparing the weather between November and December, December experiences cooler temperatures, with minimums dropping to -2°C (28°F) and a lower average of 8°C (46°F), while November holds warmer values with a minimum of 1°C (34°F) and an average of 13°C (56°F). Additionally, the maximum temperatures in December reach 21°C (70°F), which are still quite mild compared to November's peak of 24°C (75°F). December also sees a slight reduction in precipitation with 56 mm (2.2 in) over 7 days, compared to November's 77 mm (3.0 in) across 9 days. Humidity levels are fairly comparable, with December at 78% and November slightly higher at 80%. For more information, you can check Tokyo weather in November.

Compare Tokyo's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Tokyo

As December sets in, Tokyo's weather takes on a distinctly cooler character, contrasting markedly with the warmer months. While temperatures can reach a pleasant 21°C, the average drops to a crisp 8°C, with nights dipping to a chilly -2°C. This month also brings increased humidity, which, coupled with approximately 56 mm of precipitation over about seven rainy days, makes for a refreshing yet brisk atmosphere. Visitors can expect to feel the winter chill in the air, creating a perfect backdrop for Tokyo's festive illuminations and seasonal offerings. For more detailed insights into the city's yearly climate trends, be sure to check out Tokyo Climate.