Last updated: August 21, 2025
April in Koshi, Japan presents a delightful clash of temperatures, with maximum highs soaring up to 28°C (82°F), while cooler nights dip to a refreshing 1°C (34°F). The average temperature settles comfortably at 15°C (59°F), providing a perfect backdrop for springtime activities. However, the month also brings a generous 132 mm (5.2 in) of precipitation over 9 days, contributing to the lush landscapes that characterize this season. With a humidity level around 78%, the air is often filled with a fragrant mix of blooming flora, making April a truly enchanting time to experience Koshi's natural beauty.
In April, temperatures in Koshi, Japan mark a notable transition into spring as the landscape blossoms with life. The month begins with a minimum of 1°C (34°F), gradually warming to an average of 15°C (59°F) and peaking at a comfortable 28°C (82°F). This steady rise in temperature reflects a significant jump from March's cooler days, showcasing a shift from the lingering crispness of winter to the inviting warmth of spring. As the days grow longer and milder, April serves as a delightful herald of the warmer months ahead, encouraging outdoor activities and blooming flora throughout the region.
April in Koshi, Japan, marks a transition as the area experiences a significant rise in precipitation, totaling 132 mm (5.2 in) over 9 days. This amount mirrors the wet conditions of March but signals the impending onset of the heavier rains typical of the following months. With each passing week, the rainfall increases, setting the stage for May’s peak of 213 mm (8.4 in). While April's precipitation remains consistent with previous months, it is a clear indicator of the seasonal shift as Koshi prepares to embrace the lush greenery brought on by the lush precipitation of late spring and early summer. As temperatures rise and flowers bloom, April’s rain serves as both a conclusion to the cooler months and a harbinger of the wetter days ahead.
In April, the humidity in Koshi, Japan rises to 78%, marking a noticeable increase from the more stable levels of 71% observed in the previous months of February and March. This upward trend sets the stage for the increasingly humid conditions that follow, with May and June seeing even higher averages of 84% and 86% respectively. The shift towards a more humid climate becomes evident as Koshi transitions into the warmer months, ultimately peaking in the intense summer heat when levels reach a striking 92% in July. As the seasons progress, one can see how April serves as a pivotal point, bridging the cooler, drier months with the sweltering, moisture-laden weather that defines the summer in this enchanting region.
In April, Koshi, Japan, experiences a dramatic surge in UV radiation, with the UV Index soaring to 11, categorizing it as extreme. This marks a significant increase from the previous months, where the exposure threat gradually intensified from a moderate index of 4 in January to a very high 8 in March. As temperatures rise and outdoor activities beckon, residents and visitors must remain vigilant, as the burn time plunges to just 10 minutes. Following April, the UV Index remains at this extreme level through May and June, only reaching even higher heights in July and August. With these trends in mind, it's crucial to stay informed and protect your skin during these sunny months. For more details on UV conditions throughout the year, visit Koshi UV Index.
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April marks a radiant transition in Koshi, Japan, as the region basks in 277 hours of sunshine, indicating a noticeable upward trend in daylight that began in January. Following a steady increase from the winter months, where January saw only 178 hours, the arrival of spring brings about a dramatic uplift, surpassing the previous months. This brightening pattern peaks in August with a remarkable 294 hours, but April’s generous sunshine signifies a rejuvenating leap, setting the stage for vibrant blooms and outdoor adventures. As the days grow longer and warmer, the promise of summer in Koshi becomes increasingly evident, making April a truly enchanting time for both locals and visitors alike.
In Koshi, Japan, the month of April offers a promising 43% chance of sunny weather, a slight uptick compared to the preceding months of March (37%) and January (41%). This trend suggests that as spring unfolds, residents and visitors alike can anticipate more sunny days, setting the stage for outdoor activities and blooming landscapes. However, as the year progresses into May (28%) and the subsequent summer months, the likelihood of sunshine diminishes significantly, with July peaking at a mere 18%. Overall, April serves as a delightful bridge between the drab winter months and the brighter days ahead, inviting everyone to enjoy the crisp, sunny spells before the summer heat sets in.
As spring unfolds in Koshi, Japan, April brings a delightful increase in daylight duration, with the sun gracing the skies for 12 hours. This marks a notable progression from the 11 hours seen in March, signaling the transition toward longer, sunnier days. The upward trend continues into May, when daylight reaches 13 hours, and stays steady for the summer months of June and July, offering 14 hours of daylight. The pattern reflects a seasonal rhythm where each month builds upon the last, inviting residents to embrace the warmth and vibrancy of spring and summer. As autumn approaches in September, daylight begins to wane again, gently reminding us of the cyclical nature of the seasons.
In April, the winds in Koshi, Japan, maintain a gentle average speed of 2.5 m/s (6 mph), reflecting a familiar transition as winter gives way to spring. This month's wind strength is consistent with January but slightly less robust than February and March, suggesting a calming effect as nature begins to bloom. As we move into the following months, a gradual decline in wind speeds can be observed, particularly in June, where the average drops to just 1.6 m/s (4 mph). The overall trend indicates a pattern of steadiness in the early months, followed by a softening breeze as summer approaches. This rhythm not only marks the seasons but enhances the serene atmosphere that envelops Koshi during this enchanting time of year.
Weather in Koshi varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Koshi, focusing on differences in temperature, rainfall, humidity, and UV levels.
April and January present quite contrasting weather experiences. In April, temperatures range from a chilly 1°C (34°F) at night to a warm 28°C (82°F) during the day, with an average of 15°C (59°F). This month also sees a significant amount of rainfall, with 132 mm (5.2 in) spread over 9 days, and humidity levels are relatively high at 78%. In contrast, January features colder temperatures, with a minimum of -5°C (24°F) and a maximum of only 17°C (63°F), averaging 6°C (42°F). Precipitation is less frequent in January, amounting to 54 mm (2.1 in) over just 6 days, and the humidity is slightly lower at 75%. For more detailed weather insights, refer to Koshi weather in January.
April and February present quite contrasting weather patterns. In April, temperatures begin to rise significantly, with a minimum of 1°C and average highs reaching up to 28°C, making it generally warmer than February’s cooler range of -5°C to a maximum of 20°C. Additionally, while April experiences more average rainfall at 132 mm over 9 days, February sees slightly less precipitation at 96 mm across 10 days. Furthermore, the humidity levels are higher in April at 78% compared to February’s 71%, contributing to a more humid environment as spring approaches. For a closer look at February weather specifics, you can visit Koshi weather in February.
In March, the weather tends to be cooler, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 24°C (75°F), giving it an average of 11°C (52°F). The month experiences around 131 mm (5.2 in) of precipitation over 12 days, coupled with a humidity of 71%. In contrast, April brings warmer conditions, with temperatures ranging from a minimum of 1°C (34°F) to a more comfortable maximum of 28°C (82°F), averaging 15°C (59°F). While April has similar precipitation levels at 132 mm (5.2 in), it sees slightly fewer rainy days at 9, along with a higher humidity of 78%. This transition from March to April signifies a shift towards more pleasant spring weather. For more detailed insights, you can check Koshi weather in March.
April and May exhibit notable differences in weather patterns. In April, temperatures range from a minimum of 1°C (34°F) to a maximum of 28°C (82°F), with an average of 15°C (59°F). The month experiences 132 mm (5.2 in) of precipitation over about 9 days, accompanied by a humidity level of 78%. In contrast, May brings warmer conditions, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 30°C (86°F) and an average of 19°C (67°F). However, it is also wetter, receiving 213 mm (8.4 in) of rain over 12 days, along with increased humidity at 84%. For more details on the weather in May, you can check Koshi weather in May.
April and June present notably different weather patterns. In April, temperatures range from a chilly minimum of 1°C (34°F) to a pleasant maximum of 28°C (82°F), with an average of 15°C (59°F). The month experiences moderate precipitation, totaling 132 mm (5.2 in) over about 9 days, accompanied by a humidity level of 78%. In contrast, June brings warmer temperatures, with a minimum of 13°C (55°F) and a maximum reaching 32°C (89°F), resulting in an average of 23°C (73°F). However, June also sees significantly higher rainfall, measuring 274 mm (10.8 in) across 15 days, and increased humidity at 86%. For more insights on the weather during this month, you can explore Koshi weather in June.
April and July showcase distinct weather patterns, highlighting the transition from spring to summer. In April, temperatures range from a cool minimum of 1°C (34°F) to a pleasant maximum of 28°C (82°F), with an average of 15°C (59°F). The month experiences significant precipitation, totaling 132 mm (5.2 in) over approximately 9 days, accompanied by a humidity level of 78%. In contrast, July brings warmer temperatures with a minimum of 17°C (63°F) and a sweltering maximum of 35°C (96°F), averaging around 26°C (79°F). The month is also much wetter, with 478 mm (18.8 in) of rainfall recorded over 20 days and an increased humidity of 92%. For more details on the July weather in this region, visit Koshi weather in July.
April and August present notably different weather patterns. In April, temperatures range from a cool minimum of 1°C (34°F) to a warm maximum of 28°C (82°F), with an average of 15°C (59°F). The month sees about 132 mm (5.2 in) of precipitation over 9 days, accompanied by a humidity level of 78%. In contrast, August boasts significantly warmer temperatures, with a minimum of 18°C (65°F), an average of 28°C (82°F), and a high reaching up to 35°C (96°F). This month experiences increased rainfall, totaling 277 mm (10.9 in) spread across 15 days, and a higher humidity level of 91%. For more details about the August weather conditions, you can visit Koshi weather in August.
April and September present contrasting weather patterns. In April, temperatures fluctuate from a chilly minimum of 1°C (34°F) to a comfortable average of 15°C (59°F), with a maximum reaching up to 28°C (82°F). The month experiences about 132 mm (5.2 in) of precipitation over approximately 9 days, coupled with a humidity level of 78%. In stark contrast, September boasts warmer temperatures, with minimums around 12°C (53°F), an average of 24°C (76°F), and maximums soaring to 34°C (94°F). This month faces higher rainfall at 184 mm (7.2 in) across 14 days and slightly increased humidity at 84%. For more details on weather in September, check out Koshi weather in September.
In comparing the weather of April and October, we see noticeable differences in temperature and humidity. April experiences a wider temperature range, with minimums dropping to 1°C (34°F) and maximums reaching up to 28°C (82°F), while October has milder temperatures, with minimums at 6°C (44°F) and maximums peaking at 31°C (88°F). Additionally, October tends to be slightly drier, with 107 mm (4.2 in) of precipitation over 8 days compared to April's 132 mm (5.2 in) over 9 days. The humidity levels are also comparable, with October at 83% and April at 78%. For more detailed information, you can check Koshi weather in October.
April and November present a shift in weather characteristics that reflect the transition between spring and late autumn. In April, temperatures range from a chilly minimum of 1°C (34°F) to a comfortable maximum of 28°C (82°F), with an average of 15°C (59°F). The month experiences significant precipitation, totaling 132 mm (5.2 in) over about 9 days, and humidity levels often hover around 78%. In contrast, November's temperatures are slightly cooler, with a minimum of -1°C (30°F) and a maximum of 25°C (77°F), an average of 12°C (55°F). This month sees less rainfall, totaling 60 mm (2.4 in) over 7 days, while humidity remains relatively high at 81%. For a closer look at November's weather conditions, you can view Koshi weather in November.
April and December present contrasting weather patterns that reflect the transition between spring and winter. In April, temperatures range from a chilly 1°C (34°F) at night to a warm 28°C (82°F) during the day, with an average of 15°C (59°F). This month also sees significant rainfall, with 132 mm (5.2 in) over approximately 9 days, resulting in a humidity level of 78%. In contrast, December features cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 22°C (72°F), averaging around 7°C (45°F). Precipitation decreases to 71 mm (2.8 in) over 7 days, while humidity remains slightly elevated at 79%. For more detailed insights into December conditions, you can visit Koshi weather in December.
April in Koshi ushers in a delightful transitional phase, characterized by a noticeable increase in temperatures and a lively ambiance as spring fully unfolds. Unlike the cooler months, April boasts warmer days that often reach a peak of 28°C, promoting outdoor activities and blossoming flora. However, the month also brings some rain, with frequent showers contributing to a humidity level that may feel high at times. While average temperatures provide a pleasant respite from the chill of winter, nights can still dip to cooler levels. The combination of sunshine and moisture in April sets a unique environment that contrasts sharply with both the winter's cold and the summer's heat. For a more comprehensive understanding of Koshi's unique climate patterns, visit Koshi Climate.