April Weather in Hachimantai, Japan

Last updated: August 21, 2025

April in Hachimantai, Japan brings a delightful mix of springtime weather, characterized by a maximum temperature reaching 23°C (73°F) while the average hovers around a cool 7°C (44°F). As nature awakens, residents and visitors can expect a significant minimum temperature of -10°C (15°F) during the night, adding a crispness to the air. Rainfall is prevalent this month, with 119 mm (4.7 in) of precipitation over 17 days, contributing to a humid atmosphere at 75%. This transitional period creates a unique tapestry of weather patterns, making April a fascinating time to experience the beauty of Hachimantai.

April Temperature in Hachimantai

April in Hachimantai, Japan, marks a significant transition in the seasons as the chill of winter begins to relent. With temperatures averaging 7°C (44°F), the landscape transforms from its cold, wintry state to a more vibrant, spring-like atmosphere. The minimum temperature of -10°C (15°F) still hints at lingering cold, but daytime highs can climb to a pleasant 23°C (73°F), inviting outdoor activities and blooming flora. This month showcases a notable increase from the average of 2°C (35°F) in March, illustrating the shift towards warmer, sunnier days. As Hachimantai embraces April, the region bids farewell to winter, welcoming the gentle warmth that heralds the arrival of spring.

April Weather in Hachimantai: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Hachimantai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hachimantai, April 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).
JanFebMarAprMayJunJulAugSepOctNovDec242535445662707264534129
Data source: Temperature data for Hachimantai 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.

April Precipitation in Hachimantai

April marks a significant uptick in precipitation in Hachimantai, Japan, with an average of 119 mm (4.7 in) of rainfall, making it one of the wettest months of the year. This surge is accompanied by 17 rainy days, indicating a persistent pattern of showers that helps nourish the region's lush landscapes. As nature awakens in spring, April serves as a bridge from the heavier snows of winter, with precipitation gradually increasing from 62 mm (2.4 in) in January to its peak in this month. Following April, May sees a slight decrease to 100 mm (3.9 in), yet the trend remains above average compared to the early months of the year. This seasonal rhythm of rainfall not only highlights the transition to warmer weather but also supports the vibrant growth typical of the region's springtime bloom.

April Precipitation Trends in Hachimantai

The chart displays monthly precipitation patterns in Hachimantai, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Hachimantai, April typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec6284981191001131551451141526688
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Hachimantai

In April, Hachimantai, Japan experiences a notable shift in humidity, dropping to 75% from the higher levels of earlier months. This decline marks the transition from the winter chill, where humidity hovers around 80% in January and February, through March's slight decrease at 77%. As spring unfolds, the air feels fresher and less dense, creating a pleasant atmosphere. This lower humidity sets the stage for the upcoming summer months, when humidity begins to rise again, peaking at 92% in both July and August. The fluctuation in humidity illustrates Hachimantai's dynamic climate, showcasing a gradual shift from the crisp air of spring to the muggy warmth of summer.

April Average Humidity in Hachimantai

This chart illustrates the average monthly humidity levels in Hachimantai, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Hachimantai is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%77%75%80%87%92%92%86%82%79%80%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Hachimantai

In April, Hachimantai, Japan, experiences a notable spike in the UV Index, reaching 8, which signifies very high exposure levels. This trend marks a significant increase from March's 6 and is a precursor to even higher readings in May. As the burn time decreases to just 15 minutes, it’s essential for residents and visitors to take precautions against skin damage. The escalating UV Index during spring reflects a broader pattern observed in Hachimantai, where UV levels rise steadily from winter through summer, highlighting the importance of sun safety as outdoor activities ramp up. For more details, visit Hachimantai UV Index.

Maximum UV Index Levels in Hachimantai for April

The chart shows the monthly maximum UV Index (UVI) for Hachimantai in April, 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 April, the maximum UV index in Hachimantai typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891110119643
Data source: Hachimantai April 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.

April Sunshine in Hachimantai

April in Hachimantai, Japan, is a radiant transition into spring, with sunshine hours reaching 258—a notable increase from the 250 hours in March. This upward trend continues with the promise of even brighter days ahead, as May boasts 288 hours of sunshine. The gradual climb from winter’s 152 hours in January to the vibrant days of April showcases a refreshing change, with nature awakening and inviting outdoor adventures. As the region experiences more daylight, April stands out as a month of blossoming beauty and longer walks under the sun, setting the stage for a splendid spring in Hachimantai.

Monthly Sunshine Duration in Hachimantai: April Highlighted

The April sunshine duration represents the total number of hours Hachimantai experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec152h200h250h258h288h272h269h254h241h211h195h182h
Data source: Hachimantai April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Hachimantai During April

In Hachimantai, Japan, April marks a noticeable uptick in sunny weather, with 41% likelihood of clear skies compared to the chillier months surrounding it. This increase is particularly striking when juxtaposed with March's 30% and the declining chances in May at 26%. As spring unfolds, the region gears up for brighter days, suggesting a refreshing shift in the weather pattern that visitors and locals alike can appreciate. April serves as a promising gateway to sunnier conditions, invigorating the spirit as nature blossoms anew.

Percentage of Sunny Days in April in Hachimantai

The chart illustrates the percentage of sunny days in Hachimantai throughout the year, with April 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 Hachimantai experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec31%38%30%41%26%28%26%17%29%34%37%31%
Data source: Hachimantai April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hachimantai in April

In Hachimantai, Japan, the month of April marks a significant transition as daylight extends to a delightful 13 hours, showcasing the arrival of spring. This increase in daylight is part of a broader trend observed throughout the year, where each month gradually gains more sunlight, peaking in the summer with 14 hours in May and June. From the deep shadows of January, with only 9 hours of daylight, residents eagerly welcome the growing light, inching up to 11 hours in March. The progression from winter's retreat into the warmth of spring not only brightens the landscape but also revitalizes the spirit, inviting outdoor adventures and community gatherings. As summer approaches, Hachimantai’s relationship with daylight becomes a vibrant tapestry, weaving together longer days and the joys of nature.

Average Daylight Hours in Hachimantai for April

The chart illustrates the variation in daylight duration in Hachimantai throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 40m10h 40m11h 56m13h 15m14h 22m14h 56m14h 39m13h 40m12h 25m11h 7m9h 58m9h 22m
Data source: Hachimantai daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Hachimantai

In April, Hachimantai experiences a gentle embrace of spring as the average wind speed settles at 3.1 m/s (7 mph), mirroring the calm of January. This month marks a transition from the brisk winds of winter, with speeds gradually declining as the year progresses toward the summer months. Interestingly, May ushers in slightly less wind at 2.9 m/s (7 mph), while the summer months of June and July see a noticeable dip, with averages dropping to 2.1 m/s (5 mph) and 1.8 m/s (4 mph), respectively. By the time autumn rolls around, the winds see a slight resurgence, marking an ever-present ebb and flow that complements Hachimantai's serene landscapes. Thus, April not only signifies a time of renewal but also seamlessly fits into the broader pattern of shifting wind dynamics throughout the year.

Average April Wind Speed in Hachimantai

The chart displays monthly wind speed patterns in Hachimantai, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.13.83.23.1 m/s2.92.11.82.22.32.32.73.2
Data source: Hachimantai April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Hachimantai Compares to Other Months

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

April and January exhibit distinctly different weather patterns. In April, temperatures range from a minimum of -10°C (15°F) to a maximum of 23°C (73°F), with an average temperature of 7°C (44°F). The month also sees significant precipitation, totaling 119 mm (4.7 in) spread over 17 days, coupled with a humidity level of 75%. In contrast, January is much colder, with temperatures dipping as low as -18°C (1°F) and only reaching a maximum of 5°C (41°F), averaging -4°C (24°F). This month experiences less precipitation at 62 mm (2.4 in) over 11 days, alongside a higher humidity of 80%. For further details, you can visit Hachimantai weather in January.

April's weather presents a significant transition from the harsh chill of February. With temperatures ranging from a minimum of -10°C (15°F) to a maximum of 23°C (73°F) and an average of 7°C (44°F), April offers a much milder climate compared to February's colder range, which has a lows of -20°C (-4°F) and highs of only 8°C (46°F). While both months experience precipitation, April sees an increase to 119 mm (4.7 in) over 17 days, in contrast to February’s 84 mm (3.3 in) over 15 days. Additionally, humidity levels in April are slightly lower at 75% versus February's 79%. For those looking for a more detailed look at February weather, please refer to Hachimantai weather in February.

April's weather presents a noticeable improvement over March, with average temperatures rising from 2°C (35°F) in March to 7°C (44°F) in April. The maximum temperature in April reaches a warmer 23°C (73°F), compared to March's maximum of 17°C (63°F). Additionally, April experiences slightly higher precipitation at 119 mm (4.7 in) over 17 days, compared to March's 98 mm (3.9 in) over 14 days, though humidity levels remain quite similar, with April at 75% and March at 77%. For more detailed information on March weather, you can visit Hachimantai weather in March.

April and May showcase a notable transition in weather patterns. In April, temperatures can dip as low as -10°C (15°F) but typically hover around an average of 7°C (44°F), reaching a maximum of 23°C (73°F) on warmer days. The month experiences significant precipitation, totaling 119 mm (4.7 in) over 17 days, with humidity around 75%. In contrast, May brings milder temperatures, with minimums of 2°C (35°F) and an average of 13°C (56°F), peaking at 29°C (85°F). This month sees slightly less precipitation at 100 mm (3.9 in) over 13 days, accompanied by a higher humidity level of 80%. For a more detailed overview, you can check out Hachimantai weather in May.

April and June present distinct weather patterns. In April, temperatures range from a chilly minimum of -10°C (15°F) to a mild maximum of 23°C (73°F), with an average of 7°C (44°F). The month sees significant precipitation, with 119 mm (4.7 in) falling over 17 days, and humidity averages around 75%. In contrast, June offers warmer temperatures, with a minimum of 5°C (42°F) and a maximum reaching 29°C (84°F), leading to an average of 17°C (63°F). While precipitation is slightly lower at 113 mm (4.4 in) over 13 days, humidity increases to 87%, contributing to a more humid atmosphere. For a detailed look at June weather, you can visit Hachimantai weather in June.

April and July present striking contrasts in weather conditions. April typically experiences cooler temperatures, with a minimum of -10°C (15°F) and an average of 7°C (44°F), peaking at 23°C (73°F). This month also sees considerable precipitation, averaging 119 mm (4.7 in) across 17 days, along with a humidity level of 75%. In contrast, July is much warmer, featuring a minimum temperature of 12°C (55°F) and an average of 21°C (71°F), soaring to a maximum of 32°C (90°F). While July has higher precipitation at 155 mm (6.1 in) over 18 days, the humidity rises significantly to 92%. For more detailed information, check out Hachimantai weather in July.

April and August exhibit stark contrasts in weather patterns. In April, temperatures can range from a chilly -10°C (15°F) at night to a pleasant maximum of 23°C (73°F) during the day, with an average of 7°C (44°F). The month experiences significant precipitation, totaling 119 mm (4.7 in) over 17 days, accompanied by a humidity level of 75%. In contrast, August sees warmer temperatures, with nighttime lows of 10°C (50°F) and daytime highs soaring to 33°C (92°F), averaging around 22°C (72°F). Precipitation is slightly higher at 145 mm (5.7 in) but occurs over just 16 days, and humidity rises significantly to 92%. For more details about the weather specific to August, you can refer to Hachimantai weather in August.

April and September present distinct weather contrasts. In April, temperatures range from a chilly minimum of -10°C (15°F) to a pleasant maximum of 23°C (73°F), with an average of 7°C (44°F). During this month, precipitation is relatively high at 119 mm (4.7 in) over 17 days and humidity sits at 75%. In contrast, September boasts warmer conditions, with minimums at 3°C (38°F) and maximums reaching up to 31°C (88°F), resulting in a comfortable average temperature of 18°C (64°F). Precipitation in September is slightly lower at 114 mm (4.5 in) over 13 days, accompanied by higher humidity levels at 86%. For those interested in specific weather conditions during this month, Hachimantai weather in September provides detailed insights.

April and October present distinct weather patterns as spring transitions into fall in Hachimantai. In April, temperatures can range from a chilly -10°C (15°F) at the lowest to a comfortable 23°C (73°F) at the highest, with an average of 7°C (44°F). The month sees significant precipitation, totaling 119 mm (4.7 inches) over 17 days, and a humidity level of 75%. In contrast, October experiences milder temperatures, with minimums of 0°C (33°F), an average of 11°C (53°F), and maximums reaching 26°C (78°F). While it has a slightly greater rainfall of 152 mm (6.0 inches) over just 11 days, the humidity increases to 82%. For more specifics on the October weather, you can refer to Hachimantai weather in October.

April and November present distinctly different weather patterns, showcasing the transition of seasons. In April, temperatures range from a minimum of -10°C (15°F) to a pleasant maximum of 23°C (73°F), with an average of 7°C (44°F). This month experiences more precipitation, totaling 119 mm (4.7 in) over 17 days, and a humidity level of 75%. In contrast, November is notably cooler, with temperatures dipping to a minimum of -12°C (11°F) and peaking at 18°C (65°F), resulting in an average of 5°C (41°F). Precipitation in November is lower, at 66 mm (2.6 in) across 11 days, accompanied by slightly higher humidity at 79%. For more detailed weather information, check out Hachimantai weather in November.

April and December present distinctly contrasting weather patterns. In April, temperatures range from a minimum of -10°C (15°F) to a maximum of 23°C (73°F), creating a much milder average of 7°C (44°F). This month sees about 119 mm (4.7 in) of precipitation over approximately 17 days, with humidity levels at 75%. In comparison, December experiences colder temperatures with minimums dropping to -12°C (10°F) and maximums reaching only 12°C (55°F), resulting in an average of -1°C (30°F). Precipitation is somewhat lower, at 87 mm (3.4 in) over 15 days, with slightly higher humidity at 80%. For more details, you can visit Hachimantai weather in December.

Compare Hachimantai's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Hachimantai

April in Hachimantai marks a significant transition, as the landscape gradually shakes off winter's chill and embraces the early signs of spring. With temperatures starting to rise, this month showcases a delightful contrast to the colder winter months, yet still retains a crispness that invites outdoor exploration. The notable average temperature is accompanied by a precipitation pattern characterized by occasional rain, leading to a humid atmosphere that fosters blooming flora. While the region experiences more precipitation days compared to drier months, the beauty of nature awakening might make those rainy spells worthwhile. To learn more about Hachimantai's unique climate throughout the year, explore Hachimantai Climate.