December Weather in Fukushima, Japan

Last updated: August 21, 2025

In December, Fukushima, Japan experiences a chillier climate with maximum temperatures reaching 14°C (57°F) and an average of 2°C (36°F), while chilly lows can plummet to -6°C (21°F). This month is marked by significant precipitation, totaling 207 mm (8.2 in) over 27 days, contributing to a humid atmosphere with an average humidity of 77%. As the winter season deepens, residents and visitors can expect a combination of damp, cool days and clear, crisp nights that define this tranquil month in Fukushima.

December Temperature in Fukushima

In December, Fukushima experiences a noticeable drop in temperatures as winter approaches, with minimums settling around -6°C (21°F) and average temperatures hovering around 2°C (36°F). This month's chill signals a transition from the milder fall temperatures, with a stark contrast to the preceding months of November, where temperatures were still relatively mild. The maximum temperatures reach a comfortable 14°C (57°F), providing a brisk but bearable atmosphere perfect for winter outings. As December progresses, residents and visitors alike can expect a frostier environment, marking the onset of Japan's cold season and bringing the anticipation of snow-covered landscapes.

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

The chart illustrates December temperature patterns in Fukushima, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fukushima, 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).
JanFebMarAprMayJunJulAugSepOctNovDec323239455359687268594736
Data source: Temperature data for Fukushima 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 Fukushima

December in Fukushima, Japan, marks a notable peak in precipitation, with an impressive 207 mm (8.2 in) recorded, making it the wettest month of the year. This surge is accompanied by an increase in rainy days, totaling 27, which signifies a shift toward the winter season. As temperatures drop, the monthly rainfall reflects a transition characterized by prolonged wet weather that outstrips previous months significantly. Observing the trend throughout the year, December's precipitation stands out, especially when compared to November's 164 mm (6.5 in) over 19 days. This transition underscores the approaching winter as the region experiences more persistent and heavier rainfall, setting the tone for the colder months ahead.

December Precipitation Trends in Fukushima

The chart displays monthly precipitation patterns in Fukushima, 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 Fukushima, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec128134105103118128120193150162164207
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Fukushima

In December, Fukushima, Japan experiences a notable drop in humidity, registering at 77%—a slight decrease from the preceding months, where humidity levels hovered around the high to mid-70s. This trend marks a consistent pattern in the latter part of the year; after peaking in the sweltering summer months of July and August, which saw humidity levels soar to an impressive 95% and 97%, respectively, there is a gradual retreat as autumn progresses. By October, humidity begins to dwindle to 81%, ultimately settling down by December's arrival. This reduction in moisture levels hints at the region's shift into the colder winter months, providing a clearer, crisper atmosphere that contrasts with the heavy humidity of the summer.

December Average Humidity in Fukushima

This chart illustrates the average monthly humidity levels in Fukushima, 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 Fukushima is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%78%77%78%86%91%95%97%89%82%78%77%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Fukushima

In December, Fukushima experiences a notable drop in the UV Index, hovering at a low level of 2, which translates to a more relaxed exposure category. With a recommended burn time of 45 minutes, residents and visitors can enjoy outdoor activities with significantly less risk of sunburn compared to the intense UV levels witnessed from April through August, when indices soared to extremes of 11. This gradual decline from the summer months is a welcome relief after months of high exposure, indicating a shift toward safer sun conditions as winter approaches. Overall, December provides a moderate opportunity for outdoor enjoyment while still encouraging sun safety practices. For more detailed insights on the seasonal UV patterns, check out the Fukushima UV Index.

Maximum UV Index Levels in Fukushima for December

The chart shows the monthly maximum UV Index (UVI) for Fukushima 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 Fukushima typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec345891010118632
Data source: Fukushima 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 Fukushima

In Fukushima, Japan, December ushers in a subtle decline in sunlight, offering 177 hours of sunshine as the year draws to a close. This dip contrasts sharply with the sun-soaked months of April and May, where residents enjoy the peak sunlight, basking in over 280 hours each month. The transition from the vibrant summer days of July and August, both boasting 305 hours, showcases the region's striking seasonal shifts. As the days grow shorter, December’s softer light adds a tranquil charm to the winter landscape, reminding us that while the sun may set earlier, the warm glow of Fukushima's natural beauty remains ever-present, inviting reflection and respite as we approach the new year.

Monthly Sunshine Duration in Fukushima: December Highlighted

The December sunshine duration represents the total number of hours Fukushima 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.
JanFebMarAprMayJunJulAugSepOctNovDec152h198h259h282h305h297h305h284h266h232h190h177h
Data source: Fukushima December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Fukushima During December

In December, Fukushima, Japan, experiences a relatively low chance of sunny weather, with only 24% likelihood of clear skies. This marks a slight decline compared to the earlier months, where the probability of sunshine begins to climb, peaking at 47% in April. As the year winds down, the trend shows a notable drop in sunny days, reflecting the shift towards colder winter months. This contrasts sharply with the vibrant autumn months, particularly September, which enjoys a 43% chance of sun. Overall, while December remains a chilly month, its limited sunshine is part of the natural progression into winter, following a promising spring and summer.

Percentage of Sunny Days in December in Fukushima

The chart illustrates the percentage of sunny days in Fukushima 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 Fukushima experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec23%27%29%47%32%36%36%27%43%39%35%24%
Data source: Fukushima December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Fukushima in December

In Fukushima, Japan, the daylight duration experiences a notable seasonal rhythm, peaking in the vibrant month of June with 15 hours of light, illuminating the natural beauty of the region. As the year transitions, daylight gradually decreases, starting from a crisp 14 hours in May and gently waning through the summer months of July and August. By September, the sun graces the skies for 12 hours, leading to a steady decline in light throughout the fall. As winter descends in December, daylight settles at 9 hours, a reflection of the crisp, shorter days typical of the season. This cyclical pattern underscores the ever-changing landscape of Fukushima, where each month brings its unique palette of light and shadow, inviting residents and visitors alike to embrace the beauty of each season.

Average Daylight Hours in Fukushima for December

The chart illustrates the variation in daylight duration in Fukushima throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 32m10h 35m11h 56m13h 19m14h 30m15h 6m14h 48m13h 46m12h 26m11h 3m9h 51m9h 12m
Data source: Fukushima daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Fukushima

As December unfolds in Fukushima, Japan, the average wind speed reaches 8.9 m/s (20 mph), marking a notable increase compared to the preceding months. The winds pick up a brisk pace during this time, showcasing a trend of stronger gusts as the year draws to a close. While January begins the year with the highest average speed at 9.1 m/s, the subsequent months reveal a gradual decline, dipping to its calmest in June at 5.5 m/s. However, as autumn transitions into winter, there's a resurgence in wind speeds, peaking in November before settling at a still invigorating pace for December. This month not only serves as a gusty farewell to the year but also highlights the dynamic shifts in Fukushima's wind patterns, reflecting the changing seasons and the natural rhythm of the region.

Average December Wind Speed in Fukushima

The chart displays monthly wind speed patterns in Fukushima, 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.
JanFebMarAprMayJunJulAugSepOctNovDec9.19.77.56.45.85.55.96.65.76.27.98.9 m/s
Data source: Fukushima December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Fukushima Compares to Other Months

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

December and January weather exhibit notable differences in temperature and precipitation patterns. In December, temperatures range from a minimum of -6°C (21°F) to a maximum of 14°C (57°F), with an average of 2°C (36°F). This month receives substantial precipitation, totaling 207 mm (8.2 in) over 27 days, and humidity levels hover around 77%. In contrast, January tends to be colder, with temperatures dropping to a minimum of -8°C (18°F) and a maximum of only 9°C (49°F), averaging 0°C (32°F). The precipitation is also lower, at 128 mm (5.0 in) over 20 days, with a slight increase in humidity to 79%. For more detailed insights into January weather, you may refer to Fukushima weather in January.

December and February present notable differences in weather patterns. In December, temperatures range from a minimum of -6°C (21°F) to a maximum of 14°C (57°F), with an average temperature of 2°C (36°F). This month experiences 207 mm (8.2 in) of precipitation over 27 days, contributing to a humidity level of 77%. In contrast, February is typically colder, with minimum temperatures dropping to -9°C (17°F) and a maximum of 9°C (48°F), resulting in an average of 0°C (32°F). Precipitation decreases significantly to 134 mm (5.3 in) over 22 days, while humidity remains slightly higher at 78%. For more detailed insights, you can refer to the link: Fukushima weather in February.

In December, the weather is distinctly colder, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 14°C (57°F) and an average of 2°C (36°F). The month is also quite wet, experiencing 207 mm (8.2 in) of precipitation over 27 days, contributing to a persistent humidity level of 77%. In contrast, March sees slightly milder temperatures, with a minimum of -4°C (25°F), an average of 4°C (39°F), and a maximum of 12°C (53°F). Precipitation decreases significantly to 105 mm (4.1 in) over 15 days, maintaining the same humidity level of 77%. For more details on March weather patterns, you can check Fukushima weather in March.

December and April present quite distinct weather profiles despite sharing similar maximum temperatures of 14°C (57°F). In December, the temperatures can dip as low as -6°C (21°F), leading to an overall colder atmosphere with an average of just 2°C (36°F). This month also experiences significantly higher precipitation, with 207 mm (8.2 in) spread over 27 days, resulting in a damp and chilly environment. By contrast, April witnesses milder temperatures, starting from a minimum of 1°C (35°F) and averaging around 7°C (46°F). Rainfall is notably lighter at 103 mm (4.1 in) across 14 days, and humidity remains relatively high at 78%. For more details on April weather, you can visit Fukushima weather in April.

December and May present striking contrasts in weather. In December, temperatures can dip as low as -6°C (21°F), with an average of around 2°C (36°F) and a maximum of 14°C (57°F). This month is characterized by significant precipitation, totaling 207 mm (8.2 in) over 27 days, along with relatively high humidity at 77%. In contrast, May brings milder conditions with minimum temperatures of 6°C (44°F), an average of 12°C (53°F), and a maximum of 18°C (65°F). Precipitation is notably lower in May, accumulating to 118 mm (4.6 in) over just 12 days, although humidity rises to 86%. For more detailed insights, check out Fukushima weather in May.

When comparing the weather in December and June, it's evident that the two months present stark contrasts. December experiences colder temperatures, with daily averages around 2°C (36°F) and minimums dipping to -6°C (21°F), while June offers a milder climate with averages of 15°C (60°F) and minimums of 10°C (51°F). Precipitation is more frequent in December, occurring over 27 days with a total of 207 mm (8.2 in), compared to June, which has 11 days of rain totaling 128 mm (5.0 in). Additionally, humidity levels are higher in June at 91%, compared to 77% in December. For a closer look at the weather specifics in June, you can visit Fukushima weather in June.

December and July present starkly contrasting weather conditions. In December, temperatures range from a chilly -6°C (21°F) to a mild 14°C (57°F), with an average of 2°C (36°F). This month experiences significant precipitation, totaling 207 mm (8.2 in) over 27 days, coupled with a humidity level of 77% that adds to the cold. In contrast, July boasts much warmer temperatures, with a minimum of 14°C (57°F), an average of 20°C (68°F), and a maximum of 26°C (79°F). Rainfall is lighter in July, with only 120 mm (4.7 in) spread over just 10 days, and humidity levels rise to a staggering 95%. For a detailed look at July weather, you can explore Fukushima weather in July.

December and August present contrasting weather conditions. In December, temperatures can plunge as low as -6°C (21°F), with an average temperature of around 2°C (36°F) and a maximum of 14°C (57°F). This month is marked by significant precipitation, averaging 207 mm (8.2 in) over 27 days, coupled with a humidity level of 77%. In stark contrast, August boasts much warmer temperatures, with daytime averages reaching 22°C (72°F) and highs of 27°C (81°F). Although it also experiences considerable rainfall of 193 mm (7.6 in), it occurs over fewer days—only 14—and is accompanied by a high humidity of 97%. For more information, check out Fukushima weather in August.

December and September present contrasting weather patterns. In December, temperatures range from a chilly -6°C (21°F) at night to a mild 14°C (57°F) during the day, with an average of 2°C (36°F). This winter month also sees considerable precipitation, totaling 207 mm (8.2 in) over 27 days, coupled with a humidity level of 77%. In stark contrast, September enjoys a much warmer climate, with nighttime lows of 14°C (58°F) and daytime highs reaching 28°C (82°F), averaging around 20°C (69°F). The rainfall in September is lighter at 150 mm (5.9 in) over just 12 days, though the humidity is slightly higher at 89%. For more detailed information, you can check Fukushima weather in September.

In comparing the weather between December and October, we observe significant differences in temperature and precipitation. December experiences much colder temperatures with a minimum of -6°C (21°F) and an average of 2°C (36°F), while October is milder, featuring a minimum of 7°C (44°F) and an average of 15°C (59°F). Rainfall is also heavier in December, totaling 207 mm (8.2 in) over 27 days, compared to October's 162 mm (6.4 in) across 15 days. Additionally, humidity levels are slightly lower in December at 77%, compared to October's 81%. For more detailed information, you can check Fukushima weather in October.

When comparing the weather in December to that of November, it’s evident that December tends to be colder and wetter. December experiences lower average temperatures, with a minimum of -6°C (21°F) and an average of 2°C (36°F), compared to November's minimum of -2°C (29°F) and average of 9°C (48°F). Furthermore, December sees increased precipitation, totaling 207 mm (8.2 in) over 27 days, while November records 164 mm (6.5 in) over 19 days. Despite the slightly lower humidity in December at 77% compared to November's 78%, the overall chill and rainfall mark December as a distinctly harsher month weather-wise. For more detailed insights into November weather patterns, you can refer to this link: Fukushima weather in November.

Compare Fukushima's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Fukushima

As December rolls in, Fukushima experiences a notable shift in weather compared to the other months of the year. The air turns crisp and chilly, with temperatures hovering around an average of 2°C and dipping to a minimum of -6°C at times. This month also sees a significant increase in precipitation, as it's one of the wettest times with rain falling on nearly 27 days. The average humidity of 77% adds to the ambiance of cold and damp, creating a distinct winter atmosphere unlike the milder and drier conditions of prior months. For more insights into the region's climate throughout the year, check out Fukushima Climate.