Last updated: January 18, 2025
Aomori, Japan, exhibits a diverse climate characterized by four distinct Köppen-Geiger classifications: Cfa (humid subtropical), Dfb (warm-summer humid continental), Cfb (oceanic), and Dfa (hot-summer humid continental). The region experiences significant temperature fluctuations throughout the year, with January temperatures plummeting to a frigid -18°C (-1°F) and soaring to a sweltering 35°C (96°F) in August. The annual average hovers around 11°C (52°F), reflecting the interplay between cold winters and warm summers that shape Aomori's unique climatic identity.
Aomori, Japan, showcases pronounced seasonal temperature patterns, beginning with the heart of winter in January, where lows can plunge to -18°C (-1°F) and average around -1°C (31°F). As February progresses, temperatures rise slightly, marking the slow transition towards spring, with mid-winter lows of -15°C (4°F). March brings more noticeable warming, with averages ascending to 3°C (39°F) and daytime highs reaching 20°C (69°F). The onset of April sees further temperate shifts, yielding warmer air and peaking daytime temperatures of 25°C (78°F). By late spring, May ushers in mild weather with averages of 14°C (57°F) and maximums climbing to 32°C (90°F), setting the stage for the hot summer months of June through August, where temperatures consistently hover around 20°C to 23°C (68°F to 74°F) at average, with highs peaking at 35°C (95°F) in July and August. The cooling trend resumes in autumn, as September experiences a drop to 20°C (68°F), transitioning to the crispness of October with averages settling back to 14°C (57°F). As winter encroaches again in November and December, lows return to their icy roots, falling to -10°C (15°F) and -12°C (11°F) respectively, ultimately defining Aomori's climate through its stark and contrasting seasonal cycles.
Aomori experiences a minimum temperature of -18°C (1°F) in January and peaks at 35°C (95°F) in August, while Hirosaki sees slightly milder temperatures with a January low of -17°C (2°F) and the same summer high of 35°C (95°F). In contrast, Yokohama has a warmer January minimum of -7°C (19°F) and a lower maximum of 29°C (85°F) in August. For more details on monthly temperatures, visit monthly temperatures in Aomori, monthly temperatures in Hirosaki, and monthly temperatures in Yokohama.
Aomori, Japan, experiences a notable variation in precipitation throughout the year, characterized by a substantial amount of rainfall particularly during the summer months. January marks the year’s precipitation commencement with approximately 85 mm (3.3 in) of rainfall over 16 days. This pattern intensifies as winter transitions to spring, peaking in April with 110 mm (4.3 in) over 14 days. The spring months of March and May also see significant rainfall, with 100 mm (3.9 in) and 104 mm (4.1 in), respectively, establishing a wet trend that continues into the early summer.
The summer months of June, July, and August are particularly pronounced in their precipitation, with Aomori experiencing its highest rainfall in August at 181 mm (7.1 in) across 15 days, a stark contrast to the lighter rainfalls of spring. June and July also contribute significantly, with 125 mm (4.9 in) and 133 mm (5.2 in) of rain, respectively. The onset of autumn in September sees a drop to 126 mm (4.9 in) followed by October's 166 mm (6.5 in) before November and December bring the year to a close with 102 mm (4.0 in) and 133 mm (5.2 in), displaying the rich and varied precipitation patterns that define Aomori's climate.
In Aomori, Japan, the sunshine duration exhibits a clear seasonal pattern, showcasing a steady increase from the winter months through to summer. January starts the year with 153 hours of sunshine, gradually rising to 198 hours in February. As March ushers in the arrival of spring, sunshine hours jump to 251 and continue to climb through April, reaching 276 hours. This upward trajectory peaks in May, where Aomori basks under 300 hours of sun, setting the stage for the warm summer months.
The summer season sees sunshine reaching its zenith, highlighted by July, which boasts an impressive 302 hours of bright skies. However, this peak begins to wane in August, with 282 hours recorded, before transitioning into the less sunny months of autumn. September sees a decline to 260 hours, followed by October's 226 hours and further reduction in November, where 193 hours of sunshine marks the onset of winter. By December, the sunshine duration drops to 181 hours, reflecting the cyclical nature of Aomori's climate, characterized by vibrant summers and subdued winters, encapsulating the region's dynamic atmospheric conditions throughout the year.
Aomori, Japan, experiences significant fluctuations in UV Index values throughout the year, reflecting the changing intensity of solar radiation with the seasons. In the winter months, January and February see moderate UV Index levels of 3 and 4, respectively, with a risk of sunburn after about 30 minutes of exposure. As spring arrives in March, the UV Index rises sharply to 6, categorized as high, which reduces safe exposure time to 25 minutes. April and May bring even greater increases, with the UV Index reaching 8 and 9, both classified as very high, limiting burn time to just 15 minutes during peak daylight hours.
The summer months see an escalation in UV intensity, peaking in August with an extreme UV Index of 11, where the risk of harm from unprotected sun exposure is significant, allowing only 10 minutes before burns occur. September follows with a high UV Index of 9, while October's decline brings it back down to 6, indicating a return to high levels of UV radiation. The year concludes with November's moderate UV Index of 4 and December's low 2, where exposure time can safely extend to 45 minutes. These seasonal variations are crucial for residents and visitors to consider for sun protection strategies throughout the year.
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In Aomori, Japan, daylight duration varies significantly throughout the year, demonstrating a clear seasonal rhythm. At the beginning of the year, January offers just 9 hours of daylight, which gradually increases to 10 hours in February and 11 hours by March. The arrival of spring in April marks a substantial gain as daylight extends to 13 hours, reaching 14 hours in May, where the days are notably longer and more vibrant. June ushers in the peak of daylight hours with 15 hours, offering extended opportunities to enjoy the outdoors.
As summer transitions into autumn, daylight begins to wane, with July and August providing 14 and 13 hours, respectively, before stepping down to 12 hours in September. The decline continues into October, with daylight further reducing to 11 hours, while November sees a return to 9 hours, mirroring conditions at the year's start. December concludes the cycle with the shortest days, again featuring just 9 hours of daylight, encapsulating the striking contrast between the bright, lengthy days of summer and the short, cozy days of winter that define Aomori's seasonal changes.
Aomori, Japan, experiences a diverse climate with cold winters and warm summers. January and February are the coldest months, with average temperatures hovering around -2°C (28°F) and high precipitation levels peaking in July and August, at 152 mm (6.0 in) and 183 mm (7.2 in), respectively. The summer season sees warmer temperatures ranging from 22°C (73°F) to 23°C (74°F) in July and August, accompanied by ample sunshine, particularly in July with 304 hours. For more detailed information about the weather patterns throughout the year, visit Aomori climate.
Hachinohe, Japan experiences a diverse climate with cold winters and warm summers. January sees temperatures ranging from -12°C to 8°C, while July can reach highs of 35°C. Precipitation is highest in the summer months, particularly in August with 151 mm, ensuring lush landscapes throughout the year. Sunshine hours peak in May, accumulating 296 hours, providing bright and pleasant days. For more detailed information, visit Hachinohe climate.
Hirosaki, Japan, experiences a cold, snowy climate in winter, with January temperatures dropping as low as -17°C (2°F) and average snowfall peaking during February. As spring arrives in March, temperatures gradually rise to averages of around 2°C (36°F) and various precipitation levels help to nourish the blooming landscape. Summer months see the warmest conditions, with July and August reaching average highs of 22°C (72°F) and 23°C (74°F), respectively. The region enjoys significant sunshine, especially in July, totaling 316 hours, making it a vibrant time for outdoor activities. For detailed climate information, visit Hirosaki climate.
Inakadate, Japan experiences a diverse climate with cold winters and warm summers. January temperatures range from a chilly -14°C to a maximum of 6°C, while July sees highs of 33°C. Precipitation is notable, peaking in August with 181 mm, and sunshine hours are abundant from May to August, reaching up to 318 hours in July. This seasonal variation contributes to vibrant natural landscapes year-round. For more information, visit Inakadate climate.
Towada, Japan experiences a diverse climate with cold winters and warm summers. In January, temperatures can drop as low as -18°C (0°F), while July and August see highs reaching 35°C (95°F) and 34°C (94°F), respectively. Precipitation is highest during the summer months, especially in July and August, when it can exceed 170 mm (6.7 in). The region enjoys significant sunshine hours, peaking in May with 291 hours. For more detailed information, visit Towada climate.
Tsugaru, Japan experiences a diverse climate with cold winters and warm summers. January sees minimum temperatures dropping to -14°C (7°F) and a maximum of 6°C (43°F), while July peaks at 33°C (92°F). Precipitation is abundant, particularly in August with 181 mm (7.1 in), contributing to lush landscapes. The region enjoys considerable sunshine, especially in June and July, with over 300 hours of sunlight. For more details, visit Tsugaru climate.
Yokohama, Japan experiences a temperate climate with distinct seasonal variations. Winter months, such as January and February, are chilly, with average temperatures hovering around 1°C (34°F) and moderate precipitation. As spring approaches, temperatures gradually rise, peaking in May at an average of 12°C (55°F) with increasing sunshine. Summers are warm and humid, with July and August averaging 20°C (69°F) and 22°C (72°F) respectively, accompanied by significant rainfall, particularly in August. For more detailed information, visit Yokohama climate.
The climate of Aomori, Japan, is characterized by its distinct seasonal variations, which manifest in temperature, precipitation, sunshine duration, UV Index, and daylight hours. From the frigid winters with their minimal sunlight and low temperatures to the warm summers that feature extended daylight and peak UV exposure, Aomori offers a dynamic range of climatic experiences throughout the year. This rich interplay of weather patterns not only influences the local environment but also shapes the lifestyle and activities of both residents and visitors. Understanding these climatic characteristics is essential for making informed decisions about outdoor pursuits and sun protection, ultimately enhancing the enjoyment of Aomori’s unique seasonal offerings.