December Weather in Nagoya, Japan

Last updated: August 21, 2025

December in Nagoya, Japan offers a unique blend of seasonal charm, marked by average temperatures around 7°C (45°F), with daytime highs reaching a pleasant 21°C (70°F) and nighttime lows dipping to a chilly -3°C (28°F). Visitors can expect about 51 mm (2.0 in) of precipitation over approximately 5 days, contributing to the region's serene winter atmosphere. With humidity levels lingering at 83%, the crisp air is palpable, making it an ideal time for cozy indoor activities or explorative strolls through the city’s beautifully illuminated streets.

December Temperature in Nagoya

December in Nagoya, Japan, marks a significant transition into winter, with temperatures dipping noticeably compared to November. The minimum temperatures hover around -3°C (28°F), indicating a chilly start to the month, while the average temperature settles at 7°C (45°F)—a sharp drop that sets the tone for the colder days ahead. As the month progresses, highs can reach up to 21°C (70°F), showing a generous variation that allows for some milder afternoons despite the winter chill. This blend of crisp mornings and moderate afternoons encapsulates the unique charm of December in Nagoya, making it a delightful time for both locals and visitors to enjoy seasonal festivities amidst a backdrop of cool, refreshing air.

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

The chart illustrates December temperature patterns in Nagoya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nagoya, 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).
JanFebMarAprMayJunJulAugSepOctNovDec414351596774818477665545
Data source: Temperature data for Nagoya 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 Nagoya

In December, Nagoya experiences a notable drop in precipitation, with 51 mm (2.0 in) of rain falling over just 5 days. This continues the pattern of light rainfall typical for the month, mirroring the previous month of November, which also recorded 54 mm (2.1 in) but over a slightly longer period of 6 days. As the city transitions from the wetter months of summer and early autumn, December's precipitation reflects a shift toward drier conditions, particularly when compared to the heavy rainfall seen in July with a staggering 295 mm (11.6 in). The consistent decrease in precipitation from October through December signifies a gradual retreat of the rainy season, allowing for clearer skies and crisper air as the year concludes.

December Precipitation Trends in Nagoya

The chart displays monthly precipitation patterns in Nagoya, 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 Nagoya, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec43521261421731482951691652105451
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Nagoya

In December, Nagoya experiences a humidity level of 83%, maintaining the elevated moisture levels characteristic of the winter months. The trend throughout the year shows a notable increase in humidity during the summer, peaking in July at a staggering 93%, before gradually tapering off in the cooler months. While December's humidity remains elevated, it matches the humidity of November and reflects the significance of moisture in Japan's temperate climate. This consistent humidity levels can create a unique atmosphere, making the winter chill feel damp yet invigorating for residents and visitors alike. With the transition from summer’s peak, December offers a comfortable humidity that complements the festive season while preparing for the colder January ahead.

December Average Humidity in Nagoya

This chart illustrates the average monthly humidity levels in Nagoya, 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 Nagoya is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%74%76%83%87%93%91%87%85%83%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Nagoya

As the year winds down, December in Nagoya, Japan, sees a decrease in the UV Index, dropping to 3, which falls under the moderate exposure category. This reduction comes after a peak in the summer months, particularly from May to August, where the UV Index soared to an extreme level of 11, allowing for only 10 minutes of safe sun exposure. Interestingly, the trend illustrates how the UV levels gradually decline as winter approaches, offering much safer conditions compared to the earlier months. In fact, with burn times returning to 30 minutes in December, it's a reminder to enjoy the outdoors while remaining aware of UV risks. For detailed insights and updates, visit Nagoya UV Index.

Maximum UV Index Levels in Nagoya for December

The chart shows the monthly maximum UV Index (UVI) for Nagoya 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 Nagoya typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110753
Data source: Nagoya 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 Nagoya

As December settles over Nagoya, Japan, the city basks in 223 hours of sunlight, rounding off a year filled with dynamic variations in daylight. Following the vibrant 300 hours of sunshine in August, daylight begins its gradual descent, a trend mirrored in the months leading up to winter. November sees a slight uptick with 239 hours, hinting at a reluctant goodbye to the lingering warmth. However, as the end of the year approaches, December's daylight dims compared to the year's peak, yet it still shines brighter than the bleak January, which starts the cycle anew with a modest 185 hours. This ebb and flow of light not only showcases the seasonal transformations but also sets the stage for the optimism of a new year just around the corner.

Monthly Sunshine Duration in Nagoya: December Highlighted

The December sunshine duration represents the total number of hours Nagoya 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.
JanFebMarAprMayJunJulAugSepOctNovDec185h231h265h276h290h270h256h300h244h234h239h223h
Data source: Nagoya December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Nagoya During December

In Nagoya, Japan, December presents a favorable opportunity for sun seekers, boasting a 57% chance of sunny weather. This marks a noticeable uptick compared to the decline in sunshine during the summer months, where figures plummet to the low 30s. Notably, December benefits from a gradual increase in clear days as the year ends, especially when juxtaposed against November's 63% chance. Although it's not the sunniest month, December's climate offers a refreshing contrast to the cloudier summer, suggesting that while the days may be shorter, there's still a good likelihood of stepping out into the warm glow of winter sun.

Percentage of Sunny Days in December in Nagoya

The chart illustrates the percentage of sunny days in Nagoya 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 Nagoya experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec50%51%45%49%28%25%31%29%31%59%63%57%
Data source: Nagoya December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Nagoya in December

As December arrives in Nagoya, Japan, daylight begins to wane, offering just 9 hours of light—a contrast to the longer days of the preceding months. The year starts strong with 10 hours of daylight in January and February, gradually increasing to a peak of 14 hours in May and June. This trend of extending daylight continues until August, where it tapers off sharply. By September, daylight decreases to 12 hours, followed by a steady decline leading to the shorter days of winter. The overall pattern highlights a rhythmic ebb and flow of daylight, marking the seasons' transitions and the unique charm of Nagoya’s winter month.

Average Daylight Hours in Nagoya for December

The chart illustrates the variation in daylight duration in Nagoya throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 3m10h 53m11h 58m13h 4m14h14h 28m14h 14m13h 25m12h 22m11h 16m10h 18m9h 49m
Data source: Nagoya daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Nagoya

In Nagoya, Japan, December ushers in a gentle breeze with an average wind speed of 2.4 m/s (5 mph), providing a subtle reminder of the winter season ahead. As the year progresses, we witness a gradual decline in wind strength from the spring months, where speeds peak at 3.0 m/s (7 mph), to the milder conditions experienced in December. Interestingly, while January and February maintain similar low speeds around 2.5 m/s and 2.9 m/s, respectively, December stands out for its moderate winds which are notably calmer than the seasonal peaks earlier in the year. This trend of easing winds is reflective of Nagoya's transition into the quieter, calmer winter months, inviting residents and visitors alike to embrace the serene beauty of the season.

Average December Wind Speed in Nagoya

The chart displays monthly wind speed patterns in Nagoya, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.93.03.02.62.11.72.41.72.22.22.4 m/s
Data source: Nagoya December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Nagoya Compares to Other Months

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

December and January exhibit some notable differences in weather patterns. In December, temperatures range from a chilly minimum of -3°C (28°F) to a comfortable maximum of 21°C (70°F), with an average of 7°C (45°F). The month sees about 51 mm (2.0 in) of precipitation over five days, and the humidity levels hover around 83%. In contrast, January tends to be a bit colder, with minimum temperatures dropping to -5°C (23°F) and a maximum of 17°C (64°F), averaging around 5°C (41°F). The precipitation slightly decreases to 43 mm (1.7 in), with similar frequency of five rainy days and a marginally lower humidity of 82%. For more details on January's climate, you can explore Nagoya weather in January.

When comparing the weather in December and February, we can observe some notable similarities and slight differences. In December, temperatures range from a minimum of -3°C (28°F) to a maximum of 21°C (70°F), with an average temperature of 7°C (45°F) and a total precipitation of 51 mm (2.0 in) over five days. February sees a similar temperature profile, with a minimum of -4°C (24°F), an average of 6°C (43°F), and a maximum of 21°C (71°F). The precipitation in February is slightly higher at 52 mm (2.0 in), but it still occurs over five days. Humidity in December is slightly higher at 83%, compared to 79% in February. Overall, both months experience relatively mild winter temperatures with comparable precipitation levels. For more detailed insights, you can check out Nagoya weather in February.

In December, the weather features a minimum temperature of -3°C (28°F) and an average of 7°C (45°F), with highs reaching up to 21°C (70°F). The month sees about 51 mm (2.0 in) of precipitation over five days, accompanied by a notable humidity level of 83%. In contrast, March offers slightly milder temperatures, ranging from a minimum of -2°C (29°F) to an average of 10°C (51°F) and highs soaring to 25°C (77°F). However, March also experiences significantly higher rainfall, accumulating 126 mm (5.0 in) over nine days, though humidity is lower at 74%. For more details on the weather in March, you can visit Nagoya weather in March.

In December, the weather features a cooler temperature range, with a minimum of -3°C (28°F) and an average of 7°C (45°F), peaking at a maximum of 21°C (70°F). The month experiences relatively low precipitation, totaling 51 mm (2.0 in) across just 5 days, and maintains a high humidity level of 83%. In contrast, April sees noticeable warming, with minimum temperatures around -1°C (30°F) and an average of 15°C (59°F), reaching a high of 28°C (83°F). However, it is also wetter, receiving 142 mm (5.6 in) of rainfall over 9 days, while humidity decreases to 76%. For more details on the weather in April, you can visit Nagoya weather in April.

December and May present quite different weather patterns. In December, temperatures range from a chilly -3°C (28°F) at night to a mild 21°C (70°F) during the day, resulting in an average of 7°C (45°F). The month sees relatively low precipitation at 51 mm (2.0 in) over about 5 days, with humidity remaining high at 83%. In contrast, May experiences much warmer conditions, with nighttime lows of 5°C (41°F) and daytime highs reaching 32°C (90°F), leading to an average temperature of 20°C (68°F). Precipitation increases significantly to 173 mm (6.8 in) over approximately 10 days, while humidity remains constant at 83%. For more information on the weather in May, visit Nagoya weather in May.

December weather in Nagoya features cooler temperatures, with a minimum of -3°C (28°F) and an average of 7°C (45°F), peaking at 21°C (70°F). The month experiences relatively low precipitation, totaling 51 mm (2.0 in) over just 5 days, while the humidity averages around 83%. In contrast, June is significantly warmer, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 34°C (93°F) and an average temperature of 23°C (74°F). This month sees increased precipitation, totaling 148 mm (5.8 in) across 13 days, and a slightly higher humidity level of 87%. The stark difference in temperature and precipitation between these two months highlights the transition from the chill of winter to the warmth and rainfall of early summer. For more detailed information, refer to Nagoya weather in June.

December and July present starkly contrasting weather conditions. In December, temperatures range from a chilly -3°C (28°F) at night to a milder 21°C (70°F) during the day, with an average of 7°C (45°F). This month typically experiences 51 mm (2.0 in) of precipitation over about 5 days, coupled with relatively high humidity of 83%.

In contrast, July boasts much warmer weather, with nighttime lows reaching around 20°C (67°F) and daytime highs peaking at 38°C (100°F), averaging 27°C (81°F). However, it also brings significantly more rainfall, with 295 mm (11.6 in) spread over 19 days, along with heightened humidity levels of 93%. For an in-depth look at July's weather, feel free to check this link: Nagoya weather in July.

December and August present stark contrasts in weather characteristics. In December, temperatures can dip as low as -3°C (28°F), with an average of 7°C (45°F) and a maximum of 21°C (70°F), creating a chilly atmosphere. Precipitation is relatively light, totaling 51 mm (2.0 in) over just 5 days, while humidity hovers around 83%. In contrast, August experiences significantly warmer temperatures, with a minimum of 19°C (67°F), an average of 29°C (85°F), and a scorching maximum of 39°C (103°F). However, it also sees higher rainfall, accumulating 169 mm (6.7 in) across 14 days, and the humidity rises to 91%. For more on the weather in this vibrant month, you can explore Nagoya weather in August.

December and September exhibit vastly different weather patterns. In December, temperatures range from a chilly -3°C (28°F) at night to a milder 7°C (45°F) on average, with daytime highs reaching 21°C (70°F). The month sees about 51 mm (2.0 in) of precipitation over 5 days, and humidity remains high at 83%. In stark contrast, September is much warmer, with minimum temperatures around 12°C (53°F) and an average of 25°C (77°F), peaking at a scorching 38°C (101°F). This month experiences significantly more rainfall, totaling 165 mm (6.5 in) across 16 days, with humidity slightly higher at 87%. Overall, December feels much cooler and drier compared to the hot and wet conditions typical of September. For more details, check out Nagoya weather in September.

When comparing the weather in December to that in October, notable differences emerge. December typically sees milder temperatures with an average of 7°C (45°F) and a maximum of 21°C (70°F), while October is warmer, boasting an average of 19°C (66°F) and highs that can reach up to 32°C (90°F). Rainfall also diverges significantly; December records about 51 mm (2.0 in) over just 5 days, whereas October experiences considerably more precipitation at 210 mm (8.2 in) across 12 days. Humidity remains fairly consistent, with December at 83% and October slightly higher at 85%. For a more detailed look at the weather in October, you can visit Nagoya weather in October.

December weather in the region sees a notable drop in temperature compared to November, with average temperatures ranging from a low of -3°C (28°F) to a high of 21°C (70°F), while November averages between 0°C (32°F) and 25°C (76°F). Despite the shift towards colder conditions in December, the precipitation levels remain similar with 51 mm (2.0 in) over 5 days, compared to November's 54 mm (2.1 in) over 6 days. Both months share the same humidity level at 83%, indicating a persistent moisture in the air throughout the late fall and early winter. For a closer look at November's weather specifics, you can visit Nagoya weather in November.

Compare Nagoya's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Nagoya

December in Nagoya ushers in a notable shift in weather, characterized by cooler temperatures and a distinct increase in humidity. As the year winds down, residents and visitors can expect an average temperature that hovers around a brisk 7°C, with nighttime lows dipping to a chilly -3°C. Unlike the warmer months, December features more frequent bouts of precipitation, with an average of 51 mm over about five days. This month marks a transition that necessitates warmer attire and a readiness for light rain, contrasting significantly with the milder and sunnier days of autumn. For a deeper understanding of what to expect throughout the year, check out the Nagoya Climate.