Last updated: January 18, 2025
Yamanashi, Japan, is characterized by a diverse climate that features two notable Köppen-Geiger classifications: Dfb (humid continental) and Cfa (humid subtropical). This region experiences a significant temperature range, with winter lows plummeting to a frigid -19°C (-1°F) in February, while summertime highs can soar to a blistering 35°C (95°F) in August. The average annual temperature settles around 11°C (53°F), illustrating the dynamic seasonal contrasts that define the local weather patterns. Such climatic variability not only influences the environment but also impacts agricultural practices and ecological systems within Yamanashi.
Temperature patterns in Yamanashi, Japan, exhibit a pronounced seasonal cycle, characterized by cold winters and warm summers. January and February experience the harshest conditions, with minimum temperatures dropping to around -19°C (-1°F), and average temperatures hovering near freezing. As spring approaches, temperatures gradually rise, with March and April witnessing average temperatures of 5°C (42°F) and 10°C (49°F), respectively, and maximums peaking at 26°C (79°F) by April. The onset of summer in May brings a notable warmth, with averages climbing to 15°C (59°F) and peaks reaching 30°C (86°F). July and August are the warmest months, with average temperatures around 22°C (71°F) and 23°C (74°F) and maxima soaring to 35°C (95°F). As autumn arrives in September, temperatures cool slightly yet remain mild, averaging 19°C (67°F), before dropping back into cooler ranges by November and December, solidifying Yamanashi's identity as a region of marked seasonal contrasts.
Kofu experiences a temperature range from a chilly -16°C (3°F) in January to a warm 32°C (90°F) in August, while Fujikawaguchiko and Fuji-yoshida share similar temperature patterns, with minimums of -11°C (12°F) in February and maximums reaching 34°C (93°F) in August. For more detailed climate data, visit monthly temperatures in Kofu, monthly temperatures in Fujikawaguchiko, and monthly temperatures in Fuji-yoshida.
Yamanashi, Japan, experiences a varied precipitation pattern throughout the year, significantly influenced by the changing seasons. The winter months, specifically January and February, are relatively dry, receiving 54 mm (2.1 in) and 68 mm (2.7 in) of precipitation, respectively. As spring begins, March marks a shift with considerable rainfall, totaling 163 mm (6.4 in), continuing into April and May with 154 mm (6.1 in) and 160 mm (6.3 in). This spring surge establishes a trend where the region transitions from the winter chill into the wetter months ahead, with frequent rainy days increasing, especially from March onward.
Summer brings the peak of precipitation to Yamanashi, particularly in July, which records an impressive 337 mm (13.3 in) over 22 days of rain, making it the wettest month of the year. August, while still damp, sees a decrease to 186 mm (7.3 in), followed by another rise in September with 217 mm (8.6 in), demonstrating the lingering effects of seasonal monsoons. The fall months, however, present a drop in precipitation, with October’s total rising again to 326 mm (12.9 in). This annual precipitation rhythm showcases the contrast between the dry winter months and the lush, rain-soaked summer, playing a crucial role in shaping Yamanashi's diverse ecosystems.
In Yamanashi, Japan, sunshine duration showcases a distinct seasonal trend, beginning with relatively low hours in winter. January sees just 192 hours of sunshine, which gradually increases through February, reaching 235 hours. This upward trajectory continues into spring, with March recording 262 hours and April witnessing a further rise to 274 hours. By May, the region basks in its highest early spring sunlight, with 286 hours reported, signaling the transition into warmer months and encouraging outdoor activities and blooming flora.
As summer approaches, sunshine hours peak again in August, with 280 hours of brightness, offering a lively contrast to the spring months. The months of July and June see a slight reduction, with 224 hours and 259 hours, respectively, which may be attributed to increased cloud cover and precipitation typical of the season. As autumn begins, sunshine duration remains fairly stable, notably with September at 233 hours and November rising to 231 hours. The gradual decrease in daylight hours as winter approaches reflects the cyclical nature of the region's climate, highlighting the vibrant shifts in sunlight that Yamanashi experiences throughout the year.
Yamanashi, Japan, experiences significant fluctuations in the UV Index throughout the year, reflecting the seasonal changes in solar radiation. The year begins with a moderate UV Index of 4 in January, allowing for a safer exposure time of 30 minutes. As winter transitions to spring, the index rises sharply, peaking at 9 in March and 10 in April, indicating very high levels of UV radiation that demand caution. By May, Yamanashi sees its UV index reach an extreme level of 11, with a considerably reduced burn time of just 10 minutes, reminding residents and visitors alike to take sun protection seriously.
The summer months maintain elevated UV indices, consistently at 12 from June to August, necessitating strict sun safety measures due to the extreme exposure risk and a burn time limited to 10 minutes. With the arrival of autumn, the UV Index drops again to 10 in September, indicating very high levels but offering slightly longer exposure times of 15 minutes. As the year nears its end, the index experiences another decline, falling back to 4 in December, reminiscent of January's conditions. This cyclical pattern of UV exposure highlights the importance of monitoring UV levels, particularly during spring and summer, when the risk of skin damage is significantly elevated.
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In Yamanashi, Japan, daylight duration exhibits a clear seasonal pattern that reflects the region's shifts from winter to summer. During the winter months of January and February, residents enjoy about 10 hours of daylight, which gradually increases as spring approaches. By March, daylight extends to 11 hours, and by April, it significantly increases to 13 hours, marking a notable transition into the longer days that characterize the spring season. This trend continues into May and June, where daylight peaks at 14 hours, providing ample time for outdoor activities and healthy sunlight exposure.
As summer transforms into autumn, daylight duration starts to decline, though it remains relatively generous. In July, the daylight persists at 14 hours, before beginning its gradual decrease in August to 13 hours and further down to 12 hours in September. The reduction continues into October (11 hours) and November (10 hours), with the year concluding in December at just 9 hours of daylight. This cyclical rhythm of daylight underscores the importance of seasonal changes, shaping both daily life and the natural environment in Yamanashi throughout the year.
Fuji-yoshida, Japan experiences a distinct climate with cold winters and warm summers. January temperatures can drop to -10°C (13°F), while July and August see highs around 33°C (92°F) to 34°C (93°F). Precipitation is notable, especially in July and October, with rainfall amounts reaching 319 mm (12.6 in) and 340 mm (13.4 in), respectively. The area enjoys ample sunshine, peaking in May with 283 hours. For more detailed climate information, visit Fuji-yoshida climate.
Fujikawaguchiko, Japan, experiences a diverse climate with four distinct seasons. Winters are cold, with January temperatures ranging from -10°C (14°F) to 14°C (57°F) and snowfall averages, while summers are warm, peaking in July and August with temperatures reaching up to 34°C (93°F). Precipitation is highest in July, averaging 319 mm (12.6 in), contributing to lush landscapes. Despite significant rainfall, sunshine hours are robust; May boasts the most sunlight at 283 hours. For more detailed information, visit Fujikawaguchiko climate.
Fujiyoshida, Japan experiences a diverse climate characterized by cold winters and warm summers. January and February are the coldest months, with average temperatures around 1°C to 2°C and total precipitation peaking at 72 mm. The summer months of July and August bring significant warmth, with temperatures reaching up to 34°C and July recording over 319 mm of rain. The region enjoys ample sunshine, particularly from May to August, with May averaging 283 hours of sunlight. For more detailed climate information, visit Fujiyoshida climate.
Kofu, Japan experiences a diverse climate characterized by cold winters and warm summers. January temperatures can drop to a minimum of -16°C (3°F), while July reaches a maximum of 32°C (90°F). Precipitation is significant, particularly in July and October, with averages of 293 mm (11.6 in) and 277 mm (10.9 in), respectively. Sunshine hours peak in May at 291 hours, contributing to the overall climate variability throughout the year. For more detailed information, visit Kofu climate.
Minami-Alps, Japan experiences a diverse climate characterized by cold winters and warm summers. January sees minimum temperatures drop to -14°C (8°F) and average precipitation of 59 mm, while July has maximum temperatures peaking at 32°C (91°F) with significant rainfall of 412 mm. The region enjoys ample sunshine, particularly in May with 291 hours. These climatic conditions contribute to the area's rich biodiversity and scenic landscapes. For more detailed information, visit Minami-Alps climate.
Oshino, Japan experiences a diverse climate with distinct seasonal variations. Winter temperatures range from a minimum of -11°C in February to a mild average of 3°C in December, while summers can reach highs of up to 34°C in August. Precipitation is significant throughout the year, peaking at 340 mm in October, while the sunniest months are typically from May to August. Overall, Oshino enjoys moderate sunshine, averaging around 250 hours monthly, allowing for vibrant seasonal transitions. For more detailed climate information, visit Oshino climate.
Yamanashi, Japan experiences a diverse climate throughout the year, with winter temperatures ranging from -17°C (2°F) in January to 12°C (55°F) in August. Snowy conditions prevail in the colder months, as indicated by January’s 48 mm of precipitation and abundant sunshine hours peaking at 283 in May. The summer months, especially July, bring significant rainfall, with up to 320 mm, while temperatures can reach highs of 32°C (90°F). For a more detailed overview, visit the Yamanashi climate.
In conclusion, the climatic patterns in Yamanashi, Japan, reveal a dynamic interplay of temperature, precipitation, sunshine duration, UV Index, and daylight that profoundly influences the region's environment and lifestyle. The marked seasonal variations highlight the contrast between cold winters with limited sunlight and warm summers characterized by increased UV exposure and significant rainfall. These factors not only shape the diverse ecosystems and agricultural practices in Yamanashi but also emphasize the importance of understanding local climate trends for residents and visitors alike. As such, staying informed about climatic conditions can enhance appreciation for the natural beauty and promote sustainable practices throughout the year.