Last updated: August 21, 2025
In January, Yamanashi, Japan presents a chilly yet captivating winter atmosphere characterized by a maximum temperature reaching 11°C (52°F) and a minimum dipping to a brisk -17°C (2°F). Visitors can expect an average temperature hovering around a crisp -1°C (31°F), making it essential to bundle up for outdoor exploration. The region experiences 48 mm (1.9 in) of precipitation over approximately 6 days, contributing to the area's enchanting winter landscapes. With a humidity level of 76%, the air feels invigorating, offering a unique charm that embodies the heart of winter in Yamanashi.
In Yamanashi, Japan, January showcases a chilly climate, with temperatures ranging from a brisk -17°C (2°F) at night to a mild 11°C (52°F) during the day. This month sits firmly at the heart of winter, where the average temperature hovers around a frosty -1°C (31°F). As the year progresses into February and March, a noticeable warming trend begins to emerge, with February's minimum rising to -12°C (11°F) and the average reaching a crisp 0°C (33°F). By March, daytime highs soar to a pleasant 21°C (70°F), signaling the approach of spring. Overall, the transition from the biting cold of January to the more moderate temperatures of early spring reflects Yamanashi's dynamic seasonal shifts, inviting visitors to experience its striking landscapes through varied climates.
In January, Yamanashi, Japan, experiences a relatively mild precipitation level of 48 mm (1.9 in), indicating the dry start of the year. This initial rainfall occurs over just 6 days, setting a tone of moderate wetness that soon transitions into the wetter months ahead. Notably, February sees a slight increase to 58 mm (2.3 in) with 9 precipitation days, hinting at the gradual accumulation of moisture leading into spring. As march arrives, the precipitation significantly escalates, capturing the essence of the region's climate shift, with total rainfall soaring to 144 mm (5.7 in) over 13 days. This trend continues, with the spring and summer months showcasing a dramatic uptick, peaking in July at a staggering 320 mm (12.6 in) across 24 days. Thus, observably, January serves as a gentle precursor to the abundant rainfall that characterizes the later months, highlighting Yamanashi's evolving climatological rhythm.
In Yamanashi, Japan, the month of January experiences an average humidity level of 76%, signaling the peak of winter's chill. As the seasons transition into February, there’s a slight dip to 74%, followed by a gradual decrease to 70% in March, bringing a breath of fresh air as spring approaches. However, from April to May, humidity rises again, peaking at 81%, hinting at the lush greenery that follows the warmer weather. The summer months see a notable surge, with June hitting 88% and July reaching an impressive 93%, creating a humid atmosphere perfect for vibrant nature. Although August sees a decline to 90%, it remains high throughout September (86%) before yielding to more moderate levels in the autumn months, settling at 83% in October and progressively decreasing to 78% by December. Overall, Yamanashi’s humidity showcases a fluctuating yet cyclical pattern, reflecting the region's diverse seasonal atmosphere.
In January, Yamanashi, Japan experiences a moderate UV Index of 4, with a burn time of 30 minutes for unprotected skin. This sets the stage for a gradual increase in UV exposure as winter transitions to spring. By February, the UV Index rises to 6, categorized as high, reducing burn time to 25 minutes. As spring approaches, March sees a significant leap to a very high UV Index of 8 with only 15 minutes until burning occurs. This trend continues through the spring months, peaking in May and June at an extreme UV Index of 11, where the burn time drops to just 10 minutes. Notably, the summer months maintain this extreme level, reaching a peak of 12 in July. As the year winds down, the UV Index recedes again to 5 in November and back to 4 by December, underscoring a clear seasonal pattern of increasing UV exposure as temperatures rise. To plan your sun protection effectively, check the detailed Yamanashi UV Index for insights and forecasts.
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In the enchanting landscapes of Yamanashi, Japan, January ushers in a modest 191 hours of sunshine, setting a tranquil tone for the year ahead. As winter transitions into spring, sunlight gradually increases, climbing to 232 hours in February, and peaking at 258 hours by March. The month of April witnesses a radiant 271 hours, leading into the vibrant days of May, when the sunshine reaches its annual zenith at 283 hours. The warmth begins to wane in June, dropping to 256 hours, while July and August showcase a notable decline, with 220 and 275 hours respectively, reflecting a typical summer's ebb and flow. As autumn sets in, sunlight remains relatively stable, ranging from 229 hours in September to 203 hours in October, before wrapping up the year with 228 hours in November and a rebounding 232 hours in December. This dance of light throughout the year paints a vivid picture of Yamanashi's climate, inviting visitors to experience its seasonal majesty.
In Yamanashi, Japan, the likelihood of sunny weather in January stands at a promising 57%, making it one of the more favorable months for sun-seekers in winter. This is a noteworthy contrast to the preceding month of December, which boasts an even higher 68% chance of sunshine. As the year progresses, the percentage of sunny days tends to fluctuate, with February offering a slightly increased 66% chance of sun before dipping significantly to 38% in March. The trend reveals a gradual decrease in sunny days from the onset of spring, reaching its low point in June with just 15% sunny skies. Interestingly, as autumn approaches, the chances of sunshine begin to recover, culminating in November's 53% before the cycle repeats. Overall, January, though still gripped by winter chill, offers a delightful opportunity for sunshine that can brighten the cold season.
In Yamanashi, Japan, the daylight duration in January offers a glimpse of the gradual transition into the longer days of spring and summer. With 10 hours of daylight, January serves as a midpoint before the days steadily lengthen through February and March, reaching 11 hours. As spring approaches in April, daylight rapidly increases to 13 hours, peaking at 14 hours during the summer months of May, June, and July. This vibrant summer sunlight then gently fades, resulting in a gradual decrease back to 10 hours in November and culminating in 9 hours by December. This cyclical pattern highlights the region's seasonal variation, inviting both the beauty of longer summer days and the quiet charm of winter’s shorter spans.
In Yamanashi, Japan, January welcomes a gentle breeze with an average wind speed of 1.8 m/s (4 mph), setting a calm tone for the year ahead. This tranquil beginning contrasts slightly with February's increase to 2.2 m/s (5 mph), hinting at a subtle transition as winter grips the region. As the months progress, the winds remain fairly consistent, ranging between 1.2 m/s (3 mph) in the height of summer to 1.8 m/s (4 mph) in the colder months, reflecting a seasonal rhythm that pairs perfectly with the region’s picturesque landscapes. Notably, March and April see a slight dip back to 1.7 m/s and 1.8 m/s, respectively, while the late autumn months maintain a steady 1.6 m/s (4 mph). With this gentle variability, Yamanashi's winds create a serene backdrop, complementing the majestic beauty of its natural surroundings throughout the year.
Weather in Yamanashi varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Yamanashi, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, the weather in Yamanashi is quite cold, with temperatures ranging from a minimum of -17°C (2°F) to a maximum of 11°C (52°F), and an average temperature of -1°C (31°F). The area experiences around 48 mm (1.9 in) of precipitation over approximately 6 days, with a humidity level of 76%. In contrast, February sees a slight improvement in temperatures, with minimums of -12°C (11°F) and maximums reaching 17°C (63°F), averaging 0°C (33°F). Precipitation increases to 58 mm (2.3 in) over about 9 days, and humidity decreases slightly to 74%. For more details on February's weather, you can visit Yamanashi weather in February.
In January, temperatures typically range from a brisk -17°C (2°F) at their lowest to a mild 11°C (52°F) at their peak, with an average of -1°C (31°F). The month sees about 48 mm (1.9 in) of precipitation over approximately 6 days, accompanied by a high humidity level of 76%. In contrast, March experiences a significant warming trend, with minimum temperatures of -7°C (21°F) and maximums soaring to 21°C (70°F), resulting in an average temperature of 5°C (41°F). However, March is much wetter, with total precipitation reaching 144 mm (5.7 in) over 13 days, and a slightly lower humidity level of 70%. For more details about the weather patterns in March, you can visit Yamanashi weather in March.
January weather is characterized by much colder temperatures, with minimums reaching as low as -17°C (2°F) and an average of -1°C (31°F). In contrast, April brings a significant warming trend, with temperatures ranging from a minimum of -4°C (25°F) to a pleasant maximum of 25°C (78°F) and an average of 9°C (48°F). While January experiences fewer rainy days (6) and lower overall precipitation (48 mm or 1.9 in), April sees a notable increase in rainfall, with 138 mm (5.4 in) over 15 days. Humidity levels remain comparable, at 76% in January and slightly lower at 74% in April. For more details on the weather conditions in April, you can check Yamanashi weather in April.
January in Yamanashi can be quite cold, with temperatures ranging from a chilling minimum of -17°C (2°F) to a max of 11°C (52°F) and an average temperature of -1°C (31°F). The humidity is relatively high at 76%, and the month sees about 48 mm (1.9 in) of precipitation over approximately 6 days.
In contrast, May brings a significant warming trend, with temperatures ranging from a low of 0°C (33°F) to a pleasant maximum of 28°C (82°F) and an average of 14°C (58°F). However, May is also much wetter, with precipitation totaling 148 mm (5.8 in) spread across about 15 days, leading to a slightly higher humidity level of 81%.
For more details on weather conditions during May, you can check out Yamanashi weather in May.
In January, the weather is characterized by frigid temperatures, with a minimum of -17°C (2°F) and an average around -1°C (31°F), peaking at a maximum of 11°C (52°F). Precipitation is relatively low, with 48 mm (1.9 in) over just 6 days, while humidity hovers around 76%. In stark contrast, June brings much warmer conditions, with temperatures ranging from a minimum of 7°C (44°F) to a pleasant average of 17°C (63°F), reaching highs of 28°C (82°F). This month sees significantly more rainfall, totaling 179 mm (7.1 in) across 19 days, accompanied by higher humidity levels at 88%. For a detailed look at June's weather, check out Yamanashi weather in June.
In January, Yamanashi experiences much colder weather, with temperatures ranging from a frigid -17°C (2°F) at night to a maximum of 11°C (52°F) during the day. The month sees moderate precipitation of 48 mm, typically spread over just six days, while humidity hovers around 76%. In stark contrast, July brings warm temperatures with a minimum of 13°C (56°F) and a comfortable average of 21°C (70°F), peaking at a scorching 32°C (90°F). The wet season takes hold in July, delivering substantial rainfall of 320 mm over 24 days, and humidity levels rise to a high 93%. For more details on the climate during this month, you can visit Yamanashi weather in July.
January and August present starkly contrasting weather conditions. In January, temperatures can dip to a minimum of -17°C (2°F), averaging around -1°C (31°F) and peaking at 11°C (52°F). The month is relatively dry with 48 mm (1.9 in) of precipitation over just 6 days, and a humidity level of 76%. In contrast, August brings much warmer temperatures, ranging from a minimum of 12°C (55°F) to a maximum of 33°C (91°F), with an average of 23°C (73°F). This summer month sees a significantly higher total precipitation of 190 mm (7.5 in) spread over 23 days, coupled with increased humidity at 90%. For a deeper look at August weather specifics, check Yamanashi weather in August.
January and September present stark contrasts in weather patterns. In January, temperatures can plummet as low as -17°C (2°F), with an average of just -1°C (31°F) and a maximum of 11°C (52°F). The month sees limited precipitation with about 48 mm (1.9 in) over six days, accompanied by a humidity level of 76%. In contrast, September boasts a milder climate, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 31°C (87°F), and an average temperature of 18°C (65°F). This month is considerably wetter, receiving around 208 mm (8.2 in) of rainfall over 22 days, and experiences higher humidity at 86%. For more details on September weather trends, you can visit Yamanashi weather in September.
January and October present a stark contrast in weather conditions. January is characterized by frigid temperatures, with a minimum of -17°C (2°F) and an average around -1°C (31°F), while October sees much milder weather, where temperatures range from a minimum of 2°C (35°F) to a maximum of 27°C (80°F). The precipitation levels also differ significantly, with January receiving 48 mm (1.9 in) over just 6 days, compared to October, which experiences a substantial 324 mm (12.8 in) across 19 rainy days. Additionally, humidity levels rise slightly in October, averaging 83% compared to January's 76%. For more details about October weather, you can check Yamanashi weather in October.
In January, the weather is significantly colder, with temperatures ranging from a minimum of -17°C (2°F) to a maximum of 11°C (52°F) and an average of -1°C (31°F). The month sees about 48 mm (1.9 in) of precipitation over approximately 6 days, accompanied by a humidity level of 76%. In contrast, November experiences milder conditions, with temperatures ranging from a minimum of -4°C (26°F) to a maximum of 19°C (66°F), and an average temperature of 7°C (45°F). November also brings slightly more precipitation at 56 mm (2.2 in), occurring over 10 days, and has a higher humidity of 80%. For those interested in exploring more about the weather in November, you can visit Yamanashi weather in November.
January and December exhibit notable differences in weather patterns. In January, temperatures reach a minimum of -17°C (2°F) and an average of -1°C (31°F), significantly colder than December's milder minimum of -8°C (17°F) and average of 2°C (36°F). While January experiences slightly less precipitation at 48 mm (1.9 in) over 6 days, December sees a total of 52 mm (2.1 in) spread over 8 days, accompanied by a humidity level of 78%, just slightly higher than January's 76%. For more detailed insights into December weather, you can visit Yamanashi weather in December.
January in Yamanashi showcases a distinctly chillier atmosphere compared to the rest of the year, as temperatures often dip below freezing, offering a stark contrast to the milder months. With an average temperature hovering around -1°C, the month welcomes a brisk cold that can reach as low as -17°C, making it one of the coldest periods. The region experiences around 6 days of precipitation, contributing to a 76% humidity level that adds a damp chill to the air. This combination of cold and moisture lends Yamanashi a unique winter charm, enticing visitors with its beautiful landscapes and opportunities for winter sports. For a deeper dive into the weather patterns of this fascinating region, explore Yamanashi Climate.