Last updated: August 21, 2025
In December, Yamanashi, Japan experiences a striking contrast in temperatures, with a maximum reaching a pleasant 18°C (65°F), while the average hovers around a chilly 2°C (36°F) and nights can plummet to a brisk -8°C (17°F). This month sees about 52 mm (2.1 in) of precipitation over 8 days, creating a cozy atmosphere as the humidity lingers at 78%. Whether you're enjoying the crisp air or the occasional drizzle, December in Yamanashi offers a unique blend of winter charm and serene beauty.
In Yamanashi, Japan, December ushers in a crisp chill as temperatures begin to dip significantly, with lows around -8°C (17°F) and an average hovering just above freezing at 2°C (36°F). This month marks a noticeable transition into winter, as the maximum daily temperatures peak at 18°C (65°F), showcasing a gentle decline from the milder autumn months. Compared to November, where temperatures ranged from a minimum of -4°C (26°F) to a maximum of 19°C (66°F), December brings about colder nights and frosty mornings, hinting at the full embrace of winter just ahead. With such fluctuations, Yamanashi balances the last vestiges of fall with the encroaching chill, creating a picturesque, frosty landscape perfect for seasonal exploration.
December in Yamanashi, Japan brings a gentle conclusion to the year with average precipitation measuring 52 mm (2.1 in), falling over 8 days. This marks a slight decrease from November's rainfall, which recorded 56 mm (2.2 in), and showcases a trend of diminishing precipitation as winter settles in. The month stands out distinctly compared to the summer deluge, particularly July's staggering 320 mm (12.6 in), emphasizing Yamanashi's transition from a season of intense rains to the crisp, cooler days of late autumn. Despite the lower totals, December's weather supports a serene, wintry atmosphere that lays the groundwork for the coming year.
In Yamanashi, Japan, December ushers in a humidity level of 78%, marking a slight decline from the peak of summer but still reflective of the region's moderately humid climate. As the year unfolds, humidity begins its journey from a robust 76% in January, gradually dipping to 70% by March, before escalating again in May, reaching its zenith in July with a remarkable 93%. The summer months consistently showcase high humidity, but by December, there’s a welcome shift towards drier air, setting the stage for the crisp, refreshing winters ahead. This month encapsulates the transition from the warmer, more humid days of summer to the cooler and dryer conditions characteristic of winter, creating an engaging and dynamic atmospheric rhythm throughout the year.
In December, Yamanashi's UV Index dips back to a moderate level of 4, similar to the earlier months of the year like January and November. This trend signifies a welcome respite from the extreme sun exposure seen in the peak summer months, where values soared to 11 and 12. With a burn time of 30 minutes, December presents a balanced opportunity for outdoor activities without the immediate risk of overexposure. As we transition from the moderate UV levels of winter to the high indices expected in the spring, it's a good time to be mindful of sun safety while enjoying the beautiful scenery of Yamanashi. For a detailed overview of UV indices throughout the year, check out the Yamanashi UV Index.
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In Yamanashi, Japan, December ushers in a delightful 232 hours of sunshine, mirroring the brightness of early winter days. As the year draws to a close, sunlight remains relatively steady, maintaining a rich luminosity comparable to the preceding months. Notably, December's sunshine hours reflect a slight drop from the vibrant peaks of spring and summer but stand strong against the shorter daylight of winter. This trend highlights Yamanashi's unique climate, where even in colder months, the sun graces the landscape, inviting residents and visitors alike to bask in its gentle warmth as they prepare to welcome the new year.
In Yamanashi, Japan, December brings a noteworthy shift in weather patterns, with the likelihood of sunny weather peaking at 68%. This uptick marks a significant contrast to the preceding months, where sunshine is less predictable, particularly in the glare of summer. While the earlier months show fluctuating chances—from a modest 57% in January to a low 15% in June—December stands out as a promising time for sun-seekers. As the year wraps up, residents and visitors alike can enjoy more clear skies, making December an inviting month for outdoor activities amidst the winter charm of Yamanashi.
In Yamanashi, Japan, daylight duration undergoes a rhythmic transformation throughout the year, peaking in spring and summer before gradually diminishing toward winter. January and February enjoy a steady 10 hours of daylight, keeping the winter chill bright enough for outdoor activities. As the seasons shift, daylight begins to extend, reaching 13 hours in April and peaking at 14 hours from May through July, promoting vibrant landscapes and lively outdoor enjoyment. However, as autumn arrives, daylight gradually wanes, tapering down to 12 hours in September and then to 10 hours in November. Finally, December ushers in the shortest daytime, with just 9 hours of light, signaling the return of winter's cozy embrace. This natural ebb and flow of daylight creates a captivating seasonal rhythm that characterizes daily life in Yamanashi.
In December, Yamanashi, Japan, experiences a gentle breeze with an average wind speed of 1.8 m/s (4 mph), similar to the preceding November. Throughout the year, wind speeds in Yamanashi show a subtle pattern; they tend to peak during the colder months, with January also averaging at 1.8 m/s. Interestingly, the summer months witness a dip in wind activity, particularly in July and August, where speeds drop to 1.2 m/s and 1.5 m/s, respectively. As the year transitions back to winter, the wind picks up slightly again, providing a refreshing chill that complements the crisp December air. Overall, Yamanashi's wind trends reflect a serene, steady rhythm, embracing the subtleties of each season.
Weather in Yamanashi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Yamanashi, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January showcase notable differences in weather patterns. December tends to be milder, with average temperatures around 2°C (36°F), reaching a maximum of 18°C (65°F) on warmer days. In contrast, January experiences colder conditions, with average temperatures dropping to -1°C (31°F) and a maximum of only 11°C (52°F). Precipitation is slightly lower in January at 48 mm (1.9 in) over 6 days, compared to December's 52 mm (2.1 in) across 8 days. Meanwhile, humidity remains relatively consistent, at 78% in December and 76% in January. For more detailed insights, you can check out Yamanashi weather in January.
December and February exhibit notable differences in weather patterns, particularly in temperature and precipitation. In December, temperatures range from a minimum of -8°C (17°F) to a maximum of 18°C (65°F), with an average temperature of 2°C (36°F) and 52 mm (2.1 in) of precipitation over about 8 days. Conversely, February is generally colder, featuring a minimum temperature of -12°C (11°F) and an average of 0°C (33°F), with a maximum temperature of 17°C (63°F). Precipitation increases slightly to 58 mm (2.3 in) over 9 days, while humidity remains relatively high at 74%. For more detailed insights on February weather, you can visit Yamanashi weather in February.
In December, the weather tends to be colder, with average temperatures around 2°C (36°F) and a maximum of 18°C (65°F). The month experiences around 52 mm (2.1 in) of precipitation over about 8 days, along with relatively high humidity at 78%. In contrast, March brings slightly milder temperatures, averaging 5°C (41°F) and reaching a maximum of 21°C (70°F). However, this month also sees an increase in precipitation, totaling 144 mm (5.7 in) over approximately 13 days, while humidity remains lower at 70%. For more details about the weather conditions in March, you can check out Yamanashi weather in March.
December weather in Yamanashi tends to be quite chilly, with temperatures ranging from a minimum of -8°C (17°F) to a maximum of 18°C (65°F) and an average of around 2°C (36°F). The month sees a moderate amount of precipitation, totaling 52 mm (2.1 in) over about 8 days, and humidity levels remain relatively high at 78%. In contrast, April brings a significant warming trend, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 25°C (78°F) and an average of 9°C (48°F). April is also considerably wetter, receiving 138 mm (5.4 in) of precipitation over approximately 15 days, while humidity levels slightly decrease to 74%. For more details on the weather specifics in April, visit Yamanashi weather in April.
In comparing the weather between December and May, the stark differences are evident. December experiences colder temperatures with a minimum of -8°C (17°F) and an average of just 2°C (36°F), making for a chilly atmosphere, while May enjoys a more temperate climate, starting at a minimum of 0°C (33°F) and averaging 14°C (58°F). Precipitation also varies significantly; December sees 52 mm (2.1 in) over 8 days, whereas May is much wetter, with 148 mm (5.8 in) of rain spread across 15 days. Humidity is slightly higher in May at 81%, compared to December’s 78%, contributing to the lushness of late spring. For more details about weather patterns, check out Yamanashi weather in May.
December and June present contrasting weather conditions in Yamanashi. In December, temperatures range from a chilly -8°C (17°F) to a mild 18°C (65°F), with an average temperature of around 2°C (36°F). The month experiences 52 mm (2.1 in) of precipitation over approximately 8 days, accompanied by a humidity level of 78%. In stark contrast, June brings warmer temperatures, with minimums of 7°C (44°F), an average of 17°C (63°F), and maximums reaching up to 28°C (82°F). This month sees significantly more precipitation, totaling 179 mm (7.1 in) over 19 days, along with a higher humidity level of 88%. For more detailed insights on Yamanashi weather, check out Yamanashi weather in June.
December weather is characterized by its cold temperatures, with lows reaching -8°C (17°F) and an average of 2°C (36°F), while occasionally peaking at a maximum of 18°C (65°F). In contrast, July presents a much warmer climate, with temperatures ranging from a minimum of 13°C (56°F) to an average of 21°C (70°F), and soaring to highs of 32°C (90°F). Additionally, December sees relatively low precipitation of 52 mm (2.1 in) over 8 days, whereas July experiences significantly higher rainfall, totaling 320 mm (12.6 in) across 24 days. Humidity levels also differ between the two months, with December at 78% and July rising to 93%. For more detailed information on July's weather patterns, check out Yamanashi weather in July.
When comparing the weather in December and August, the contrasts are striking. December experiences much cooler temperatures, with minimums plunging to -8°C (17°F) and a maximum of only 18°C (65°F), while August boasts much warmer conditions, featuring a minimum of 12°C (55°F) and soaring highs reaching up to 33°C (91°F). Precipitation also varies significantly; December sees about 52 mm (2.1 in) over 8 days, whereas August is much wetter, with 190 mm (7.5 in) spread across 23 days. Additionally, humidity levels are higher in August at 90%, compared to December’s 78%. For more details, you can check Yamanashi weather in August.
In comparing the weather of December and September, the contrasts are striking. December typically experiences colder temperatures, with a minimum of -8°C (17°F) and an average of around 2°C (36°F), while September boasts much warmer conditions, reaching a maximum of 31°C (87°F) with an average of 18°C (65°F). Additionally, December is characterized by lower humidity at 78%, compared to the higher humidity levels in September, which average 86%. Precipitation patterns also differ significantly; December sees 52 mm (2.1 in) over about 8 days, whereas September receives a substantial 208 mm (8.2 in) over 22 days. For more detailed insights into September weather, you can explore Yamanashi weather in September.
The weather in December is notably colder than in October, with average temperatures ranging from a low of -8°C (17°F) to a high of 18°C (65°F), compared to October's milder conditions, which feature temperatures from a minimum of 2°C (35°F) to a maximum of 27°C (80°F). Precipitation levels also differ significantly; December experiences about 52 mm (2.1 in) of rain over 8 days, while October sees a much higher total of 324 mm (12.8 in) spread across 19 days. Additionally, humidity levels remain relatively high in both months, with December at 78% and October slightly higher at 83%. For a more detailed look at October weather, you can visit Yamanashi weather in October.
In comparing the weather of December and November, we can observe some notable differences. December experiences a colder range, with minimum temperatures dropping to -8°C (17°F) and an average of 2°C (36°F), while November is milder, with a minimum of -4°C (26°F) and an average of 7°C (45°F). Precipitation is slightly less in December, totaling 52 mm (2.1 in) over 8 days compared to November's 56 mm (2.2 in) across 10 days. Humidity levels are also quite similar, with December at 78% and November slightly higher at 80%. For further details, you can view Yamanashi weather in November.
As December settles over Yamanashi, the weather takes a striking turn, weaving together chill and beauty. The temperatures dip considerably compared to the warmer months, introducing a cooler average that beckons the winter spirit. While the landscape may experience occasional precipitation, with about eight rainy days throughout the month, the overall humidity remains a consistent feature, enveloping the region in a gentle, crisp atmosphere. This unique blend of elements distinguishes December from the other months, offering a refreshing yet tranquil backdrop that invites exploration. For more insights into the year-round climate, visit Yamanashi Climate.