Last updated: August 21, 2025
April in Kumamoto, Japan brings a delightful mix of spring weather, with temperatures ranging from a cool 3°C (38°F) to a comfortable 26°C (79°F), averaging around 15°C (59°F). This month features an average humidity of 78%, creating a refreshing atmosphere as nature blooms. While the city experiences about 135 mm (5.3 in) of rainfall over 9 days, these spring showers contribute to the vibrant landscapes for which Kumamoto is known. Embrace the charm of this season as you explore the region's rich culture and natural beauty!
In April, Kumamoto, Japan, ushers in a gentle transition from the chill of winter to the warmth of spring, with temperatures rising notably. The month begins with a minimum of 3°C (38°F) and peaks at a comfortable 26°C (79°F), presenting an average of 15°C (59°F). This upward trend highlights the blossoming beauty of sakura trees, inviting residents and visitors alike to bask in the pleasant weather. As April progresses, the days grow longer and sunnier, setting the stage for the balmy warmth of May. This trend of increasing temperatures makes April a delightful time to experience the vibrant culture and stunning landscapes of Kumamoto.
In April, Kumamoto experiences a significant dip in precipitation, with 135 mm (5.3 in) of rainfall spread over 9 days. This marks a slight decrease compared to the previous month, March, which recorded 143 mm (5.6 in) over 14 days. While April's rain is substantial, it paves the way for the more intense rainy season that follows in May and June, where precipitation levels surge to 207 mm (8.1 in) and 280 mm (11.0 in) respectively. This trend highlights a gradual transition from the mild spring showers to the heavier downpours characteristic of early summer in Kumamoto, creating a dynamic climate that shapes the region's lush landscapes.
In April, Kumamoto experiences a noticeable rise in humidity, reaching 78%—a significant increase from the 71% recorded in both January and March. This uptick heralds the arrival of spring, setting the stage for the warmer months ahead. As the season progresses into May, humidity spikes to 84%, while the subsequent summer months bring even higher levels, peaking at 92% in July. This trend illustrates how humidity in Kumamoto intensifies as the year unfolds, transitioning from the cooler, drier conditions of winter into the lush, tropical atmosphere of summer. Each increment serves to enrich the region's vibrant landscapes, drawing visitors to experience its natural beauty in full bloom.
As April arrives in Kumamoto, Japan, residents and visitors alike should brace for significantly heightened UV exposure, with the UV Index soaring to 11, categorizing it as extreme. This sharp increase follows the already very high readings of March (UV Index 9), highlighting a trend of intensifying sunlight as spring progresses. During this month, individuals must exercise caution, as the burn time drops to a mere 10 minutes—a clear indication that sun safety measures are crucial. This pattern of extreme UV levels will persist into May and June, making it essential to stay informed and protected. For more detailed information on UV exposures throughout the year, visit Kumamoto UV Index.
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In April, Kumamoto basks in the brilliance of 280 hours of sunshine, marking a delightful transition into spring. This increase from 264 hours in March showcases the region's warming embrace as cherry blossoms bloom and outdoor activities flourish. Following April, the sun continues to shine with 279 hours in May, indicating a trend of abundant sunlight that peaks in August with an impressive 294 hours. As the seasons progress, there's a gentle decline, with hours decreasing in the summer months but still remaining generous compared to the chill of winter. Overall, April serves as a vibrant reminder of nature's beauty, paving the way for sun-soaked days ahead.
In Kumamoto, Japan, April brings a 42% chance of sunny weather, marking a slight increase compared to the preceding months of March and February. This moderate likelihood is part of a broader trend where the probability of clear skies begins to rise in spring, peaking in October at a favorable 63%. Interestingly, the sunniness starts to decline from May through July, reaching a low of 19% during the hottest months. Thus, April serves as a delightful transition, inviting residents and visitors alike to enjoy a comfortable blend of warmth and sunlight before the summer months cloud the skies.
As April unfolds in Kumamoto, Japan, the days grow longer, basking in an enriching 12 hours of daylight that marks a transition into spring. This incremental increase highlights a fascinating trend: from the winter months of January through March, where daylight barely creeps past 10 to 11 hours, the rhythm of nature shifts dramatically into the warmer seasons. Following April, May and June capitalize on this daylight increase, basking under up to 14 hours of sunlight. This pattern not only signifies longer days ahead but also invites residents and visitors alike to embrace the vibrant blooming scenery that characterizes this time of year. As lighter evenings linger, April serves as a compelling prelude to Kumamoto's lush embrace of nature, inspiring outdoor activities and a renewed connection with the environment.
In Kumamoto during April, the wind whispers at an average speed of 2.6 m/s (6 mph), maintaining the gentle breeziness that characterizes the season. This consistent speed mirrors that of January and aligns with May's calm atmosphere, suggesting a springtime stability in the air. As winter transitions into warmer months, we see a noticeable dip in wind speed leading into June, where it drops to 1.7 m/s (4 mph). This trend highlights a shift towards the more tranquil, balmy days of summer, creating ideal conditions for enjoying outdoor festivities and cherry blossoms as they bloom throughout the region. Overall, April's breezes in Kumamoto provide a refreshing contrast while hinting at the quieter winds that follow.
Weather in Kumamoto varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Kumamoto, focusing on differences in temperature, rainfall, humidity, and UV levels.
April weather in Kumamoto is generally much milder than January, with average temperatures rising to a comfortable 15°C (59°F), compared to January's cooler average of 6°C (44°F). While April can see a maximum temperature of 26°C (79°F), January peaks at a much lower 17°C (63°F). Additionally, April experiences higher precipitation levels with 135 mm (5.3 in) over 9 days, reflecting the start of the rainy season. In contrast, January has less rainfall, totaling 63 mm (2.5 in) across 8 days. Humidity levels are slightly higher in April at 78%, compared to 75% in January. For a more detailed look at January weather in Kumamoto, check out Kumamoto weather in January.
April generally presents warmer and more variable weather compared to February. The average temperature in April is significantly higher at 15°C (59°F), with maximums reaching up to 26°C (79°F), while February's average is only 7°C (45°F) with a maximum of 19°C (66°F). Additionally, April experiences more precipitation, totaling 135 mm (5.3 in) over 9 days, compared to February's 105 mm (4.2 in) over 11 days. While both months have high humidity, averaging 78% in April versus 71% in February, April's milder temperatures make it feel considerably more comfortable. For a detailed look at February weather in Kumamoto, you can check Kumamoto weather in February.
April tends to be warmer than March, with average temperatures rising from 11°C (52°F) in March to 15°C (59°F) in April. The maximum temperatures also increase, with April peaking at 26°C (79°F) compared to March's maximum of 22°C (72°F). However, April experiences slightly less precipitation, totaling 135 mm (5.3 in) over 9 days, compared to March's 143 mm (5.6 in) over 14 days. Additionally, humidity levels are higher in April at 78%, compared to 71% in March. For a more detailed look at March weather, you can visit Kumamoto weather in March.
April typically showcases a gradual warming trend, with temperatures ranging from a cool minimum of 3°C (38°F) to a comfortable average of 15°C (59°F) and reaching a maximum of 26°C (79°F). However, it’s also quite wet, with 135 mm (5.3 in) of rain falling over about 9 days, resulting in a humidity level of 78%. In contrast, May experiences warmer conditions, with minimum temperatures starting at 8°C (46°F) and averaging around 19°C (67°F), peaking at 28°C (83°F). Precipitation increases to 207 mm (8.1 in) over 12 days, leading to a slightly higher humidity of 84%. For a more detailed look at the weather in May, you can check Kumamoto weather in May.
In comparing the weather between April and June, it is evident that June is significantly warmer and wetter. April experiences mild temperatures, with a minimum of 3°C and an average of 15°C, while June sees much warmer conditions with a minimum of 15°C and an average of 23°C. Furthermore, June is noticeably wetter, receiving 280 mm of precipitation over 15 days, compared to April's 135 mm over just 9 days. Additionally, humidity levels rise from 78% in April to 86% in June, contributing to a more humid atmosphere in the early summer months. For more detailed insights, check out Kumamoto weather in June.
April and July present quite contrasting weather patterns. In April, temperatures range from a cool 3°C (38°F) at night to a mild 26°C (79°F) at their peak, with an average of around 15°C (59°F). The month experiences significant rainfall, with 135 mm (5.3 in) of precipitation over 9 days, and a humidity level of 78%. In contrast, July brings much warmer conditions, featuring minimum temperatures of 18°C (64°F) and highs reaching up to 34°C (93°F), resulting in an average temperature of 26°C (79°F). However, July is also quite rainy, with a substantial 406 mm (16.0 in) of precipitation spread over 17 days, and a higher humidity level of 92%. For more detailed information, check out Kumamoto weather in July.
April and August present contrasting weather patterns in terms of temperature and precipitation. In April, temperatures range from a chilly 3°C (38°F) at night to a mild 26°C (79°F) during the day, with an average of 15°C (59°F). The month sees significant rainfall, totaling 135 mm (5.3 in) over about 9 days, and a relative humidity of 78%. In stark contrast, August boasts much warmer temperatures, with nighttime lows of 19°C (67°F) and daytime highs reaching up to 34°C (94°F), averaging 27°C (82°F). Rainfall is also more substantial in August, with 238 mm (9.4 in) spread across 14 days, along with higher humidity at 91%. For more detailed insights into August's climate, visit Kumamoto weather in August.
April and September present strikingly different weather patterns. In April, temperatures range from a cooler 3°C (38°F) at night to a pleasant average of 15°C (59°F) during the day, with highs reaching up to 26°C (79°F). However, this month also experiences considerable rainfall, with 135 mm (5.3 in) over about 9 days and a humidity level of 78%. In contrast, September is notably warmer, with temperatures starting at a minimum of 14°C (57°F), averaging around 24°C (76°F), and peaking at a hot 34°C (93°F). It tends to be wetter as well, with precipitation totaling 171 mm (6.7 in) over 14 days, accompanied by a slightly higher humidity of 84%. For more detailed insights on September weather in Kumamoto, you can check Kumamoto weather in September.
April and October offer distinct weather experiences, showcasing the transition between spring and autumn. In April, temperatures range from a cool minimum of 3°C (38°F) to a comfortable maximum of 26°C (79°F), with an average of 15°C (59°F). The month sees a fairly high level of precipitation, totaling 135 mm (5.3 in) over 9 days and a humidity level of 78%. In contrast, October features slightly warmer temperatures with a minimum of 9°C (49°F) and a maximum of 30°C (87°F), averaging 19°C (67°F). Although precipitation decreases to 117 mm (4.6 in) over the same number of rainy days, humidity rises slightly to 83%. This shift in weather highlights the increasing warmth and moisture of October, making it a unique time of year. For more details, visit Kumamoto weather in October.
April and November exhibit distinct weather characteristics, despite their proximity in the calendar year. In April, temperatures range from a low of 3°C (38°F) to a pleasant average of 15°C (59°F), peaking at a warm 26°C (79°F). This month sees a higher average precipitation level of 135 mm (5.3 in) over 9 days, with a humidity of 78%. In contrast, November experiences slightly cooler temperatures, with a minimum of 2°C (36°F), an average of 13°C (56°F), and a maximum of 24°C (76°F). Precipitation drops significantly to 76 mm (3.0 in), while humidity slightly increases to 81%. For more specific insights into November’s climate, you can read about Kumamoto weather in November.
April and December in Kumamoto feature notable differences in weather, reflecting the transition from spring to winter. In April, temperatures range from a chilly 3°C (38°F) to a warm 26°C (79°F), with an average of 15°C (59°F). The month is characterized by higher precipitation levels of 135 mm (5.3 in) over 9 days, contributing to a substantial humidity level of 78%. In contrast, December sees cooler temperatures, with a minimum of 0°C (32°F), an average of 8°C (47°F), and a maximum of 22°C (71°F). Precipitation decreases to 84 mm (3.3 in) over the same number of days, while humidity remains slightly elevated at 79%. For more information on what to expect during this winter month, check out Kumamoto weather in December.
As April arrives in Kumamoto, the weather begins to shift, offering a delightful mix of warmth and springtime vibrancy. Compared to the cooler winter months, temperatures climb noticeably, with a comfortable average that beckons outdoor exploration. While rainfall persists—with several days of precipitation—it's perfectly balanced by mild and inviting days, making this month stand out for its transitional charm. With humidity levels holding steady, the air feels fresh, enhancing the experience of the blossoming landscapes. For those keen to understand how this month compares to others throughout the year, visit Kumamoto Climate for more insights.