December Weather in Minami-Alps, Japan

Last updated: August 21, 2025

December in the Minami-Alps, Japan presents a captivating blend of winter charm and cool temperatures. With a maximum temperature reaching 18°C (64°F) and an average of 2°C (36°F), the region experiences a chilly ambiance that is characteristic of the season. Nighttime plunges into colder depths, with lows of -9°C (16°F), creating a picturesque winter landscape. This month brings 70 mm (2.8 in) of precipitation over approximately 8 days, contributing to the region's enchanting scenery. The humidity stands at a notable 78%, enhancing the air's crisp chill while inviting adventurers to embrace the seasonal beauty of snow-capped mountains and serene nature.

December Temperature in Minami-Alps

As winter settles in, December temperatures in the Minami-Alps region of Japan showcase a notable drop, with minimums reaching -9°C (16°F). The average temperature hovers around a chilly 2°C (36°F), while the maximum can soar to a relatively mild 18°C (64°F). This month signifies a shift towards the cold, following November's brisk conditions which featured a minimum of -4°C (25°F) and an average of 8°C (46°F). The transition from late autumn to early winter presents a remarkable variance, as the Minami-Alps prepares for more frigid temperatures in January, allowing visitors to embrace both the allure of winter sports and the serene beauty of a snow-draped landscape.

December Weather in Minami-Alps: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Minami-Alps, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Minami-Alps, 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).
JanFebMarAprMayJunJulAugSepOctNovDec323341495864717366564636
Data source: Temperature data for Minami-Alps 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 Minami-Alps

In December, Minami-Alps experiences a notable shift as precipitation begins to taper off, accumulating 70 mm (2.8 in) over 8 rainy days. This decline comes after a series of wetter months, particularly July and October, which recorded significant rainfall, with 412 mm (16.2 in) and 345 mm (13.6 in) respectively. Compared to November's 78 mm (3.1 in) over 11 days, December shows a continuation of drier conditions, heralding the transition into winter. As the year comes to a close, the region’s overall precipitation trend underscores a seasonal rhythm, with lingering moisture before the colder months set in.

December Precipitation Trends in Minami-Alps

The chart displays monthly precipitation patterns in Minami-Alps, 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 Minami-Alps, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec60761821771822184122162413457870
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Minami-Alps

In December, the humidity in Minami-Alps, Japan, sits at a comfortable 78%, showing a slight decrease from the preceding months. The region experiences a dynamic shift throughout the year; humidity peaks dramatically in the summer, reaching a high of 93% in July, and tends to taper off as winter approaches. For instance, after a humid May and June, December marks a transition into the drier winter, but still retains a significant moisture level. For context, while July and August bask in the height of summer humidity, colder months like January and February showcase a trend towards lower humidity, averaging around 76% and 74% respectively. This seasonal fluctuation highlights Minami-Alps' characteristic blend of moisture-rich summers and comparatively crisp winters, making December a month of refreshing coolness, albeit with lingering humidity.

December Average Humidity in Minami-Alps

This chart illustrates the average monthly humidity levels in Minami-Alps, 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 Minami-Alps 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 Minami-Alps

In December, Minami-Alps experiences a moderate UV Index of 4, allowing residents and visitors to enjoy the outdoors with a relatively safe level of solar exposure, as the burn time extends to 30 minutes. This drop in UV intensity follows a summer peak, where values reached an extreme high of 12 from May to August, signaling the need for more cautious sun protection during those months. As the year progresses into winter, the UV Index steadily decreases, providing a more forgiving environment for outdoor activities compared to the harsher rates seen earlier. For detailed information on UV levels throughout the year, visit Minami-Alps UV Index.

Maximum UV Index Levels in Minami-Alps for December

The chart shows the monthly maximum UV Index (UVI) for Minami-Alps 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 Minami-Alps typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479101112121210764
Data source: Minami-Alps 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 Minami-Alps

December in Minami-Alps, Japan, shines with 237 hours of sunlight, tying it with November for brief yet vibrant daylight. As the year comes to a close, the region experiences its shorter days, contrasting with the radiant 291 hours basked in May. Interestingly, this month reflects a gentle decline from the lively September with 238 hours. Overall, while December may not boast the highest number of sunlit hours, it retains a warm charm, inviting residents and visitors alike to embrace the beauty of winter in the serene backdrop of the Alps. The consistent sunshine throughout the year hints at the region's stable climatic appeal, making each season unique yet connected by the glow of the sun.

Monthly Sunshine Duration in Minami-Alps: December Highlighted

The December sunshine duration represents the total number of hours Minami-Alps 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.
JanFebMarAprMayJunJulAugSepOctNovDec194h239h267h278h291h263h228h284h238h216h237h237h
Data source: Minami-Alps December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Minami-Alps During December

In Minami-Alps, Japan, December marks a notable transition in sunny weather probabilities, boasting a 68% chance of sunshine. This figure stands out as one of the highest, especially when compared to the preceding months. While the year typically sees fluctuating sun chances—ranging from a mere 16% in June to 61% in February—December's increase signals a shift towards brighter days amidst the winter's chill. As the year draws to a close, residents and visitors alike can appreciate a heightened likelihood of clear skies, making December a delightful time for outdoor activities and enjoying the stunning alpine scenery.

Percentage of Sunny Days in December in Minami-Alps

The chart illustrates the percentage of sunny days in Minami-Alps 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 Minami-Alps experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec55%61%39%41%22%16%22%22%20%40%51%68%
Data source: Minami-Alps December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Minami-Alps in December

In Minami-Alps, Japan, the daylight duration exhibits a clear seasonal rhythm, with December marking the shortest days of the year, offering just 9 hours of daylight. As the year progresses from the brighter spring and summer months—peaking at 14 hours in June and July—autumn ushers in a gradual decline, leading to long nights. The days shorten from 14 hours in June back to 10 hours in November, before dipping to 9 hours in December. This trend highlights the cozy embrace of winter, where each sunset comes earlier, inviting a season of reflection and warmth in the beautiful landscapes of Minami-Alps.

Average Daylight Hours in Minami-Alps for December

The chart illustrates the variation in daylight duration in Minami-Alps throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 2m10h 52m11h 58m13h 5m14h 2m14h 30m14h 16m13h 26m12h 22m11h 15m10h 16m9h 46m
Data source: Minami-Alps daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Minami-Alps

In December, the winds in the lush Minami-Alps of Japan begin to shift, averaging 1.7 m/s (4 mph)—a return to the consistent breeziness seen earlier in the year. This slight increase contrasts sharply with the calm of summer months, where wind speeds dipped to around 1.2 to 1.5 m/s (3 mph). As the year draws to a close, the December winds carry the promise of winter, reminiscent of the gentle yet persistent gusts that characterize the early months of the year. This seasonal transition not only breathes life into the serene landscape but also sets the stage for the rich tapestry of winter's embrace in the mountains.

Average December Wind Speed in Minami-Alps

The chart displays monthly wind speed patterns in Minami-Alps, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.71.91.71.71.81.31.21.51.41.41.51.7 m/s
Data source: Minami-Alps December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Minami-Alps Compares to Other Months

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

December features a wider temperature range, with minimums dipping to -9°C (16°F) and maximums reaching up to 18°C (64°F), while January is colder overall, with minimums plummeting to -14°C (8°F) and a maximum of 12°C (54°F). Precipitation in December is slightly higher at 70 mm (2.8 in) over 8 days, compared to January's 59 mm (2.3 in) over 6 days, indicating that December may be wetter. Humidity remains quite similar between the two months, with December at 78% and January at 76%. For detailed information on January weather, check out Minami-Alps weather in January.

In December, the weather typically features a minimum temperature of -9°C (16°F) and an average of 2°C (36°F), with maximum temperatures reaching up to 18°C (64°F). The month records about 70 mm (2.8 in) of precipitation over 8 days, accompanied by a humidity level of 78%.

Conversely, February sees slightly colder conditions, with a minimum of -12°C (11°F) and an average temperature of 1°C (34°F). The maximum temperature is somewhat similar at 17°C (63°F). Precipitation increases to 76 mm (3.0 in) over 9 days, and humidity decreases slightly to 74%. For more detailed insights into February weather, check out Minami-Alps weather in February.

December weather in Minami-Alps is characterized by colder temperatures, with a minimum of -9°C (16°F) and an average of 2°C (36°F), while March sees a slight warming trend, with a minimum of -6°C (21°F) and an average of 5°C (42°F). While December experiences less precipitation, totaling 70 mm (2.8 in) over 8 days, March is considerably wetter, with 182 mm (7.2 in) falling over 14 days. Humidity levels are also slightly lower in March at 70%, compared to the higher average of 78% in December. For a detailed look at March weather conditions, check out Minami-Alps weather in March.

The weather in December presents a stark contrast to that of April. December typically sees colder temperatures, with minimums reaching as low as -9°C (16°F) and an average of just 2°C (36°F), while April enjoys milder conditions, starting from a minimum of -5°C (24°F) and averaging 9°C (49°F). Additionally, April experiences significantly more precipitation, totaling 177 mm (7.0 in) over 15 days compared to December’s 70 mm (2.8 in) over 8 days. Despite being slightly more humid in December at 78%, April offers more comfortable weather with a humidity level of 74%. For more detailed insights on the April weather, you can visit Minami-Alps weather in April.

In December, the weather is much colder, with temperatures ranging from a frigid -9°C (16°F) at night to a mild 18°C (64°F) during the day, while the average temperature sits around 2°C (36°F). This month experiences about 70 mm (2.8 in) of precipitation over approximately 8 days, with humidity levels at 78%. In contrast, May brings a significant warming with minimum temperatures around 0°C (33°F) and maximums reaching a pleasant 28°C (82°F), resulting in a much higher average temperature of 15°C (58°F). However, May sees more rainfall, totaling about 182 mm (7.1 in) spread over 14 days, with slightly higher humidity at 81%. For more detailed information about May weather, check out Minami-Alps weather in May.

December and June showcase vastly different weather patterns. In December, temperatures range from a chilly -9°C (16°F) to a mild 18°C (64°F), with an average of 2°C (36°F). The month experiences 70 mm (2.8 in) of precipitation over about 8 days, alongside a relatively high humidity level of 78%. In sharp contrast, June brings much warmer conditions, with minimum temperatures of 6°C (43°F) and maximums reaching 29°C (85°F), averaging 18°C (64°F). However, June is also significantly wetter, with precipitation totaling 218 mm (8.6 in) over 18 days, and it boasts an even higher humidity of 88%. For more details, you can check out Minami-Alps weather in June.

December and July present strikingly different weather patterns. In December, temperatures are quite cold, ranging from a minimum of -9°C (16°F) to an average of 2°C (36°F) and a maximum of 18°C (64°F), with an average humidity of 78%. The month sees about 70 mm (2.8 in) of precipitation over approximately 8 days. In contrast, July boasts much milder conditions, with minimum temperatures starting at 14°C (57°F) and averaging 22°C (71°F), peaking at 32°C (91°F). Rainfall in July is notably higher, totaling 412 mm (16.2 in) over 24 days, making it a much wetter month with a humidity level of 93%. For more specifics on July conditions, you can explore Minami-Alps weather in July.

December and August showcase striking contrasts in weather patterns. December experiences colder temperatures, with an average of 2°C (36°F) and minimums dipping as low as -9°C (16°F), while August features a much warmer average of 23°C (74°F) and highs reaching up to 33°C (92°F). Precipitation levels are notably different as well; December has a total of 70 mm (2.8 in) over about 8 days, compared to August's significant 216 mm (8.5 in) spread across 21 days. Additionally, humidity is higher in August at 90%, while December's humidity sits at 78%. For more detailed information, you can visit Minami-Alps weather in August.

December and September exhibit stark differences in weather patterns. In December, temperatures are significantly cooler, with a minimum of -9°C (16°F) and an average of 2°C (36°F), whereas September enjoys milder temperatures, ranging from a minimum of 9°C (49°F) to a maximum of 31°C (89°F) and an average of 19°C (66°F). Precipitation also varies greatly; December sees 70 mm (2.8 in) of rainfall over just 8 days, while September experiences a much wetter month with 240 mm (9.5 in) of rain over 21 days. Additionally, the humidity levels are higher in September at 86%, compared to December's 78%. For further details, you can check Minami-Alps weather in September.

In December, the weather tends to be significantly colder compared to October, with average temperatures hovering around 2°C (36°F), while October enjoys a milder average of 14°C (57°F). December experiences a chilling minimum temperature of -9°C (16°F), contrasting sharply with October's minimum of 1°C (35°F). Moreover, October sees considerably higher precipitation, totaling 345 mm (13.6 in) over 19 days, whereas December has only 70 mm (2.8 in) and about 8 days of rain. The humidity remains relatively similar, at 78% in December and 83% in October. For a more detailed look at the October climate, check out Minami-Alps weather in October.

In comparing the weather of December and November, it is evident that December tends to be colder, with average temperatures ranging from a minimum of -9°C (16°F) to a maximum of 18°C (64°F), while November experiences milder temperatures, with a minimum of -4°C (25°F) and a maximum of 20°C (69°F). Precipitation levels are slightly lower in December at 70 mm (2.8 in) over 8 days, compared to November's 78 mm (3.1 in) across 11 days. Humidity remains relatively high in both months, with December at 78% and November slightly higher at 80%. For more details on the weather patterns, you can check Minami-Alps weather in November.

Compare Minami-Alps's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Minami-Alps

As December unfolds in the Minami-Alps, the climate begins to shift significantly, offering a unique blend of mild days and chilly nights. Unlike the warmer months, the average temperature drops, creating a crisp atmosphere that can plummet to winter's first frost. With 78% humidity and approximately 70 mm of precipitation over about 8 days, December often features a mix of rain and the first snows, providing stunning landscapes. This month stands in contrast to the balmy summer temperatures, making it an excellent time for visitors to savor the beautiful serenity of the mountains blanketed in winter hues. To explore more about what to expect throughout the year, be sure to check out Minami-Alps Climate.