December Weather in Kawasaki, Japan

Last updated: August 21, 2025

In Kawasaki, Japan, December brings a chill that sets the stage for winter. With maximum temperatures reaching 16°C (61°F) and dipping to a minimum of -5°C (23°F), the month presents an average temperature of 3°C (37°F). Rainfall is a common occurrence, totaling 67 mm (2.6 in) over approximately 16 days, contributing to the 80% humidity that envelops the city. As the landscape transforms under the wintry embrace, Kawasaki offers a unique blend of crisp air and occasional rain, perfect for those who appreciate the beauty of the cold season.

December Temperature in Kawasaki

In December, Kawasaki, Japan experiences a notable shift as temperatures begin to dip, marking the transition into winter. With minimums around -5°C (23°F) and an average temperature of 3°C (37°F), the city takes on a cooler demeanor, inviting residents and visitors to embrace the season's charm. Despite the chill, daytime highs reach about 16°C (61°F), providing occasional reprieves from the cold. This month serves as a gentle reminder of the region's winter potential, as it smoothly links the cooler autumn months of November to the even colder January ahead. As the year wraps up, Kawasaki's December weather sets a serene backdrop, perfect for cozy indoor activities and festive celebrations.

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

The chart illustrates December temperature patterns in Kawasaki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kawasaki, 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).
JanFebMarAprMayJunJulAugSepOctNovDec323442506166747769594837
Data source: Temperature data for Kawasaki 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 Kawasaki

December in Kawasaki, Japan, wraps up the year with a precipitation total of 67 mm (2.6 in), indicating a return to wetter conditions as the region transitions into winter. This marks a slight increase from November's 40 mm (1.6 in), but still well below the more saturated summer months. Interestingly, precipitation is recorded on 16 days, suggesting that while individual rainfalls may be light, moisture is frequently present throughout the month. This pattern of consistent, albeit moderate rainfall in December contrasts with the heavier downpours experienced earlier in the year, particularly in July and August when totals soared to over 200 mm. As the year closes, Kawasaki showcases a balance of wet and dry spells, highlighting its varied climate.

December Precipitation Trends in Kawasaki

The chart displays monthly precipitation patterns in Kawasaki, 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 Kawasaki, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec65531121091071012322141502084067
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kawasaki

In Kawasaki, Japan, December brings a humidity level of 80%, consistent with the city's winter climate. Analyzing the yearly trends reveals that humidity is generally high throughout the warmer months, peaking in July and August at 92%. As the seasons transition, the humidity begins to dip, with spring months showing a gradual decline to about 75% in April. However, as winter sets in, December maintains a relatively stable level, mirroring the early winter months of January and February. This pattern reflects Kawasaki's maritime climate, where damp conditions linger but do not reach the oppressive humidity of summer, creating a comfortable atmosphere as the year wraps up.

December Average Humidity in Kawasaki

This chart illustrates the average monthly humidity levels in Kawasaki, 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 Kawasaki is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%77%75%80%87%92%92%86%82%79%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Kawasaki

In Kawasaki, Japan, the UV Index showcases a marked seasonal progression throughout the year, highlighting the city's sun exposure patterns. December emerges with a UV Index of 3, categorized as moderate, and an average burn time of 30 minutes, indicating a relatively safe period for outdoor activities with appropriate sun protection. This follows a trend of fluctuating levels; after experiencing extreme UV exposure in the peak summer months of July and August, which reached an index of 11, the numbers taper off as autumn fades into winter. While the winter months of January and February also register as moderate, peaking at an index of 4, there’s a noticeable decline from the high summer that underscores the importance of adjusting sun safety practices with the changing seasons. For detailed insights and forecasts, visit Kawasaki UV Index.

Maximum UV Index Levels in Kawasaki for December

The chart shows the monthly maximum UV Index (UVI) for Kawasaki 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 Kawasaki typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3478101011119643
Data source: Kawasaki 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 Kawasaki

December in Kawasaki, Japan, typically experiences 204 hours of sunshine, marking a gentle transition as the year draws to a close. This month's sunshine hours reflect a trend of diminishing daylight, a subtle decline from the vibrant 292 hours of sun basking in May. As winter sets in, the sunshine hours consistently decrease, peaking in spring and early summer. December's figures, while less than the warmer months, maintain a cozy charm, hinting at the transition into winter activities and festivities. Even as the days grow shorter, the delicate dance of sunlight continues to warm the hearts of residents, promising a radiant start to the new year.

Monthly Sunshine Duration in Kawasaki: December Highlighted

The December sunshine duration represents the total number of hours Kawasaki 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.
JanFebMarAprMayJunJulAugSepOctNovDec167h222h258h271h292h280h254h271h247h210h218h204h
Data source: Kawasaki December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kawasaki During December

In Kawasaki, Japan, December presents a 39% chance of sunny weather, aligning closely with January’s sunlit prospects. Interestingly, this period follows November, which boasts a higher likelihood of sunshine at 55%, indicating a gradual decline into the winter months. As temperatures drop, the sunny spells become less frequent, reflecting a seasonal pattern observed from autumn to winter. While the chance of clear skies may not be as promising as earlier in the year, December still offers opportunities for those seeking to enjoy the crisp winter air under the sun. Embrace the cool yet vibrant December days, where the sun peeks through occasionally, reminding us that the charm of winter in Kawasaki can still be quite delightful.

Percentage of Sunny Days in December in Kawasaki

The chart illustrates the percentage of sunny days in Kawasaki 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 Kawasaki experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec39%49%33%44%32%21%21%24%29%38%55%39%
Data source: Kawasaki December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kawasaki in December

As December rolls around in Kawasaki, Japan, daylight begins to wane, culminating in a modest 9 hours of sunshine each day. This month marks the lowest point in the yearly cycle, following a gradual decline from the summer's peaks of 14 hours in June and July. The transition from the vibrant 14 hours of daylight in spring to the crisp, shorter days of winter reflects nature's rhythm, as sunlight softly diminishes through the months. Interestingly, December's daylight duration mirrors that of January, creating a sense of continuity in the winter season. As the year draws to a close, Kawasaki experiences this tranquil embracing of shorter days, making way for the anticipation of a gradual return to longer daylight hours with the arrival of spring.

Average Daylight Hours in Kawasaki for December

The chart illustrates the variation in daylight duration in Kawasaki throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 49m10h 45m11h 57m13h 11m14h 14m14h 45m14h 29m13h 34m12h 24m11h 10m10h 6m9h 32m
Data source: Kawasaki daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Kawasaki

As December unfolds in Kawasaki, Japan, the average wind speed picks up slightly to 3.2 m/s (7 mph), offering a refreshing contrast to the calmer breezes of the preceding months. This seasonal uptick aligns with the trend observed as the year transitions towards winter, where a gradual increase in wind speed is noted after the summer lull. From June to November, winds gently wane, reaching their lowest point in July at just 1.9 m/s (4 mph), but December heralds a renewal in air movement, beckoning the chill of winter. The year's final month not only marks a brisk end but also serves as a reminder of nature's cyclic rhythm, where the winds begin to assert themselves once again, preparing the landscape for the cold months ahead.

Average December Wind Speed in Kawasaki

The chart displays monthly wind speed patterns in Kawasaki, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.03.83.33.32.82.11.92.22.32.42.53.2 m/s
Data source: Kawasaki December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Kawasaki Compares to Other Months

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

December and January exhibit notable differences in weather patterns, with both months experiencing chilly conditions. In December, temperatures range from a minimum of -5°C (23°F) to a maximum of 16°C (61°F), averaging around 3°C (37°F). The month receives about 67 mm (2.6 in) of precipitation over 16 days, combined with a consistent humidity level of 80%. In contrast, January typically sees colder temperatures, with a minimum of -10°C (14°F) and a maximum of 11°C (52°F), resulting in an average of 0°C (33°F). Precipitation levels remain similar at 65 mm (2.6 in), but over fewer days—13 days of rain. For more detailed insights into January weather, you can check this Kawasaki weather in January.

In December, temperatures range from a minimum of -5°C (23°F) to a maximum of 16°C (61°F), with an average of 3°C (37°F). The month experiences a fair amount of precipitation, totaling 67 mm (2.6 in) over 16 days and maintaining a humidity level of 80%. In contrast, February sees slightly colder temperatures, with a minimum of -10°C (14°F) and an average of 1°C (35°F), while the maximum reaches 15°C (59°F). February also has lower precipitation at 53 mm (2.1 in) across 12 days, with a humidity level of 79%. For a more detailed look at February weather, you can visit Kawasaki weather in February.

In December, temperatures in Kawasaki range from a minimum of -5°C (23°F) to a maximum of 16°C (61°F), with an average of 3°C (37°F). The month experiences about 67 mm (2.6 in) of precipitation over 16 days, and humidity levels are relatively high at around 80%. In contrast, March brings slightly milder weather, with temperatures varying from -3°C (26°F) to a maximum of 20°C (69°F), and an average of 5°C (42°F). Precipitation increases to 112 mm (4.4 in), although it falls over fewer days—just 13 days—resulting in a slightly lower humidity of 77%. For more specific insights on March conditions, you can explore this Kawasaki weather in March.

In December, the weather is significantly cooler, with average temperatures ranging from a minimum of -5°C (23°F) to a maximum of 16°C (61°F), and an average of 3°C (37°F). The month experiences higher humidity at 80% and receives about 67 mm (2.6 in) of precipitation over 16 days. In contrast, April brings a noticeable warmth, with temperatures varying from a minimum of -2°C (29°F) to a maximum of 26°C (80°F), leading to an average of 10°C (50°F). Although April sees increased precipitation at 109 mm (4.3 in) over 12 days, the humidity is slightly lower at 75%. This shift signifies a transition from the colder, damp December to the more temperate and wetter conditions of April. For more specific weather details, you can refer to Kawasaki weather in April.

December and May exhibit notably different weather patterns. In December, temperatures range from a chilly -5°C (23°F) to a milder 16°C (61°F), with an average temperature of 3°C (37°F). This month also experiences about 67 mm (2.6 in) of precipitation over 16 days, accompanied by high humidity levels of 80%. In contrast, May boasts a significantly warmer climate, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 30°C (87°F) and an average of 16°C (61°F). While May sees a higher total precipitation of 107 mm (4.2 in), it has fewer rainy days, totaling just 13. Despite both months having similar humidity levels at 80%, May's weather is generally more pleasant and inviting. For more details on the weather during this month, visit Kawasaki weather in May.

In December, the weather is considerably cooler, with temperatures averaging around 3°C (37°F) and ranging from a minimum of -5°C (23°F) to a maximum of 16°C (61°F). The month experiences about 67 mm (2.6 in) of precipitation over 16 days, accompanied by a humidity level of 80%. In contrast, June brings much warmer weather, with average temperatures reaching 19°C (67°F) and highs of up to 32°C (89°F). Although June sees a higher total precipitation of 101 mm (4.0 in), it does so over only 13 days, and the humidity also rises slightly to 87%. For more detailed insights on June conditions, you can visit Kawasaki weather in June.

The weather in December contrasts sharply with that of July. December experiences cooler temperatures, ranging from a minimum of -5°C (23°F) to a maximum of 16°C (61°F), with an average of 3°C (37°F). In addition, the month sees around 67 mm (2.6 in) of precipitation spread over 16 days, accompanied by relatively high humidity at 80%. In stark comparison, July boasts warmer temperatures, with a minimum of 15°C (60°F), an average of 23°C (74°F), and a high of 35°C (95°F). This summer month also receives significantly more rainfall, totaling 232 mm (9.1 in) across 18 days, along with even higher humidity at 92%. For a more detailed look at the specifics, check out Kawasaki weather in July.

In December, temperatures in Kawasaki range from a chilly -5°C (23°F) at night to a mild 16°C (61°F) during the day, with an average temperature of around 3°C (37°F). The month experiences considerable precipitation, totaling about 67 mm (2.6 in), spread over 16 days, and the humidity hovers around 80%. In sharp contrast, August brings warmth, with nighttime lows of 14°C (58°F) and daytime highs soaring to 35°C (95°F), averaging 25°C (77°F). This summer month is also wetter, with 214 mm (8.4 in) of rainfall over 20 days, accompanied by higher humidity levels of 92%. For a detailed overview of the weather conditions in August, you can refer to Kawasaki weather in August.

December and September present strikingly different weather conditions. In December, temperatures range from a chilly -5°C (23°F) at night, averaging 3°C (37°F) during the day, and can peak at 16°C (61°F). Despite the cooler temperatures, December sees a moderate amount of precipitation, averaging 67 mm (2.6 in) over 16 days, accompanied by a humidity level of 80%. In contrast, September enjoys milder temperatures, with a minimum of 8°C (47°F), an average of 21°C (69°F), and highs reaching up to 33°C (92°F). However, it also experiences higher precipitation, with 150 mm (5.9 in) over 14 days, and humidity levels soar to 86%. For more details on September weather, you can check Kawasaki weather in September.

In comparing the weather in December and October, we see notable differences in temperature and precipitation levels. December typically experiences much colder temperatures, with a minimum of -5°C (23°F) and an average of 3°C (37°F), whereas October enjoys milder conditions, featuring a minimum of 4°C (39°F) and an average of 15°C (59°F). Additionally, October is significantly wetter, receiving 208 mm (8.2 in) of precipitation over 12 days, compared to December's 67 mm (2.6 in) spread across 16 days. Humidity levels remain fairly constant, hovering around 80% in December and 82% in October. For more details, you can check out this link: Kawasaki weather in October.

In comparing the weather patterns of December and November, December tends to be colder with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 16°C (61°F), whereas November generally sees milder conditions with temperatures between -3°C (27°F) and 21°C (69°F). Additionally, December experiences more precipitation, totaling 67 mm (2.6 in) over 16 days, compared to November's 40 mm (1.6 in) over just 9 days. Humidity levels are slightly higher in December at 80%, compared to 79% in November. For more details on November weather specifically, you can check Kawasaki weather in November.

Compare Kawasaki's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Kawasaki

As December settles in Kawasaki, the weather takes a noticeable turn, transitioning into the cooler embrace of winter. With temperatures hovering around a brisk 3°C, the month is marked by a mix of chilly days and occasional frosty nights, where lows can dip as low as -5°C. This is a stark contrast to the milder conditions of previous months, making warm layers essential for outdoor activities. December also experiences a significant uptick in precipitation, with over half of the month seeing at least some rainfall, contributing to the 67 mm of total precipitation. The high humidity levels at 80% can make the air feel even colder, adding to the wintry atmosphere. For a deeper dive into the nuances of Kawasaki's climate, check out Kawasaki Climate.