Last updated: August 21, 2025
April in Otaru, Japan ushers in a delightful transition as spring takes hold, showcasing maximum temperatures reaching 17°C (63°F) while averaging a cooler 5°C (40°F). Despite occasional dips to a brisk -3°C (26°F), the month is marked by a notable precipitation total of 76 mm (3.0 in) over approximately 11 days, contributing to the region's lush greenery and vibrant blossoms. With humidity levels at a steady 81%, visitors can expect a refreshing maritime atmosphere that perfectly captures the essence of early spring in this charming coastal city.
As April unfolds in Otaru, Japan, the lingering chill of winter begins to melt away, ushering in the first signs of spring. With temperatures starting to rise, residents enjoy a noticeable shift: the minimum temperature settles around a crisp -3°C (26°F), while daytime highs reach a pleasant 17°C (63°F). This results in an average temperature of 5°C (40°F), marking a significant transition from the colder months of January through March. The increasing warmth encourages the blossoming of local flora and the return of outdoor activities, making April a revitalizing time to experience the beauty of this coastal city. This trend of rising temperatures promises an exciting lead-up to the warmer months, inviting both locals and visitors to embrace the season's renewal.
In April, Otaru experiences a refreshing shift with precipitation totaling 76 mm (3.0 in), marking a notable decrease from the wet months preceding it. This month sees only 11 days of rain, indicative of the region's transition toward drier, more temperate conditions as spring unfolds. While January through March are marked by heavier precipitation, April's lighter rainfall hints at the approaching warmth, as average temperatures begin to rise. Despite the reduction in both precipitation amount and rainy days, the lingering moisture from earlier months maintains Otaru's lush landscapes, making it a vibrant time for nature lovers to explore the city.
In April, Otaru experiences a humidity level of 81%, a slight dip from the previous months of January through March, when humidity rates were consistently higher. This level of moisture in the air marks the transition into spring, as the city sheds the winter chill. However, just ahead lies a trend of increasing humidity, reaching a peak of 93% in July and 95% in August, as the warm summer months approach. April's humidity, while lower than the preceding winter months, sets the stage for the significant rise that characterizes the sweltering summer, illustrating Otaru's dynamic seasonal shifts.
As spring unfolds in Otaru, Japan, the UV Index surges significantly in April, reaching a high of 7. This marks a notable increase from the previous months, as January through March exhibited relatively low to moderate levels, with burn times gradually decreasing. April's UV Index emphasizes the need for heightened sun protection, with a burn time of just 25 minutes. As warmer weather approaches, residents and visitors alike should be vigilant, anticipating even higher levels in May and beyond. For those planning outdoor activities during this vibrant season, be sure to stay informed about UV exposure levels by visiting Otaru UV Index.
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April brings a delightful transition in Otaru, Japan, with 288 hours of sunshine illuminating the city, a significant leap from the 242 hours recorded in March. This promising increase marks the beginning of a beautiful stretch as daylight hours continue to rise. Following April, May sees a peak of 310 hours, showcasing a vibrant spring with blossoming flowers and bustling atmosphere. As summer approaches, the sunshine remains generous, with July reaching its zenith at 320 hours. This upward trend in sunlight not only brightens the days but also enhances Otaru's charm, making it an inviting destination as nature awakens and the warmth of the season permeates the air. The gradual decline in sunshine hours from August through November signals the transition to winter, but April stands out as a time of renewal and radiance in this picturesque coastal city.
In April, Otaru, Japan, ushers in a notable transition towards sunnier skies, with a 41% chance of sun, making it one of the brighter months following the winter's gloom. This increase stands out against the previous three months, where sunlight was a rare commodity, particularly in February with a mere 20% chance. As spring blossoms, the likelihood of clear days begins to rise significantly, paving the way for a more vibrant outdoor experience. This trend continues into May, which, despite a dip to 27%, still holds promise for those seeking the warmth of the sun. April, therefore, marks a pivotal moment where the dreariness of winter starts to give way to the hopeful embrace of springtime sunshine.
As April unfolds in Otaru, Japan, the city basks in an invigorating 13 hours of daylight, marking a significant shift from the shorter days of winter. This month serves as a delightful bridge between the crispness of early spring and the lush vibrancy of approaching summer. Following the gradual increase of daylight from 10 hours in February to 11 hours in March, April's longer days signal the awakening of nature, encouraging outdoor activities and vibrant social gatherings. As the month transitions into May, daylight peaks at 14 hours, further enhancing the allure of Otaru's picturesque landscapes. The clear trend highlights a steady climb in daylight duration that reflects the region's transition towards warmer seasons, inviting both residents and visitors to enjoy the extended hours of sunshine.
As April sweeps in Otaru, Japan, the wind takes on a gentle demeanor, averaging 4.2 m/s (or 9 mph), a slight increase from the quieter March. This transitional month signals the tail end of winter’s chill, as the winds gradually soften, paving the way for the balmy pleasures of spring. Compared to the brisker winds of earlier months, April's breezes are refreshing yet subtle, hinting at the warmer temperatures to come in May. Interestingly, this downward trend in wind speed continues into the summer months, reflecting a seasonal shift that embraces the serene beauty of the landscape. The transformation from the winter gales to the mild gusts of spring makes April a particularly enchanting time in Otaru, showcasing nature's gentle evolution.
Weather in Otaru varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Otaru, focusing on differences in temperature, rainfall, humidity, and UV levels.
April typically offers a milder climate compared to the harsh winter conditions of January. With average temperatures ranging from a minimum of -3°C (26°F) to a maximum of 17°C (63°F), April allows for a greater variance in warmth, while January remains considerably cooler with an average temperature from -12°C (10°F) to 4°C (40°F). Rainfall in April is less frequent yet substantial, totaling 76 mm (3.0 in) over 11 days, in contrast to January's higher precipitation of 87 mm (3.4 in) spread across 20 days. Humidity remains relatively similar between the two months, with April at 81% and January slightly higher at 84%. For a more detailed look at the weather conditions during this time, check the Otaru weather in January.
April's weather shows a noticeable warming trend compared to February, with average temperatures rising to around 5°C (40°F) from February’s chillier average of -3°C (26°F). Maximums in April can reach up to 17°C (63°F), significantly higher than February’s peak of 6°C (44°F). However, February experiences more persistent precipitation, totaling 99 mm (3.9 in) over 22 days, in contrast to April's 76 mm (3.0 in) spread across 11 days. Humidity levels remain relatively stable, with April at 81% and February slightly higher at 83%. For those interested in Otaru's February conditions, more information can be found here.
April generally experiences milder temperatures compared to March, with a minimum of -3°C (26°F) and an average of 5°C (40°F), whereas March's minimum dips to -7°C (19°F) with an average of just 1°C (34°F). The maximum temperatures in April reach up to 17°C (63°F), providing a noticeable warmth compared to March's maximum of 12°C (54°F). However, April also sees a slight increase in precipitation, totaling 76 mm (3.0 in) over 11 days, compared to March’s 95 mm (3.7 in) spread over 16 days. Both months maintain a consistent humidity level of 81%. For more detailed insights, you can check Otaru weather in March.
April and May exhibit a distinct transition in weather patterns. In April, temperatures range from a chilly minimum of -3°C (26°F) to a mild maximum of 17°C (63°F), with an average temperature of 5°C (40°F). The month sees a total precipitation of 76 mm (3.0 in) over approximately 11 days, with humidity levels around 81%.
By contrast, May presents a significant warming trend, featuring minimum temperatures of 3°C (38°F) and maximum temperatures soaring to 26°C (80°F), yielding an average of 11°C (51°F). The precipitation in May increases slightly to 90 mm (3.6 in) over 13 days, and humidity also rises to 86%. This change marks May as a much warmer and slightly wetter month. For more details, you can check Otaru weather in May.
April and June exhibit notable differences in weather conditions. In April, temperatures range from a chilly -3°C (26°F) to a mild maximum of 17°C (63°F), with an average of 5°C (40°F). The month sees about 76 mm (3.0 in) of precipitation over 11 days, coupled with a relatively high humidity level of 81%. In contrast, June warms up significantly, with temperatures starting at a minimum of 6°C (44°F) and peaking at 24°C (75°F), averaging around 14°C (58°F). Although June experiences more precipitation at 112 mm (4.4 in) over 12 days, the humidity increases slightly to 87%. For more detailed insights on June weather, you can visit Otaru weather in June.
April and July weather show a notable contrast, with April experiencing cooler temperatures and a significant chill. In April, temperatures range from a minimum of -3°C (26°F) to a maximum of 17°C (63°F), averaging around 5°C (40°F). The month sees about 76 mm (3.0 in) of precipitation over 11 days, accompanied by a relatively high humidity of 81%. In contrast, July brings much warmer conditions, with temperatures ranging from 9°C (49°F) to a peak of 28°C (82°F) and an average of 20°C (68°F). Although July has a bit more rainfall at 101 mm (4.0 in) over 12 days, the humidity also increases to 93%, making it feel quite muggy. For a deeper look at what to expect, check out Otaru weather in July.
April and August present quite contrasting weather conditions. In April, temperatures range from a chilly -3°C (26°F) to a maximum of 17°C (63°F), with an average temperature of around 5°C (40°F). The month also experiences approximately 76 mm (3.0 in) of precipitation over 11 days, accompanied by a relatively high humidity of 81%. In stark contrast, August brings much warmer weather with temperatures ranging from 14°C (58°F) to a high of 29°C (85°F), averaging about 21°C (70°F). This month sees higher precipitation, totaling around 169 mm (6.7 in) across 14 days, and an even higher humidity level of 95%. For more detailed information, you can check Otaru weather in August.
April and September exhibit distinct weather patterns that reflect the transition between winter and autumn. In April, temperatures can dip as low as -3°C (26°F) and reach an average of 5°C (40°F), peaking at a mild 17°C (63°F). The month experiences approximately 76 mm (3.0 in) of precipitation over about 11 days, with humidity levels at 81%. In contrast, September showcases a warmer climate, with minimum temperatures starting at 10°C (50°F), averaging around 18°C (65°F), and reaching highs of 26°C (80°F). This month sees increased precipitation of 117 mm (4.6 in) spread over 14 days, accompanied by slightly higher humidity at 88%. For more details on September weather, you can check out Otaru weather in September.
April and October present distinctly different weather patterns. In April, temperatures typically range from a chilly -3°C (26°F) to a mild 17°C (63°F), with an average of around 5°C (40°F). The month sees about 76 mm (3.0 in) of precipitation over approximately 11 days and boasts a relatively high humidity of 81%. In contrast, October offers warmer temperatures, with a minimum of 4°C (39°F) and a maximum of 22°C (71°F), culminating in an average of 12°C (54°F). However, October is notably wetter, receiving 152 mm (6.0 in) of rainfall across about 17 days and slightly higher humidity at 83%. For those interested in more details about October weather, check out Otaru weather in October.
April and November present distinct weather patterns, each with its own unique characteristics. In April, temperatures range from a chilly -3°C (26°F) to a more mild 17°C (63°F), with an average temperature of 5°C (40°F). The month sees about 76 mm (3.0 in) of precipitation over 11 days, accompanied by a relatively high humidity of 81%. In contrast, November experiences slightly lower temperatures, with a range from -5°C (23°F) to 15°C (59°F) and an average of 5°C (42°F). However, it is significantly wetter, receiving 167 mm (6.6 in) of precipitation across 22 days, while humidity remains close at 79%. For a closer look at what to expect, check out Otaru weather in November.
When comparing the weather in April and December, notable differences emerge. April experiences milder temperatures, with an average around 5°C (40°F), reaching up to 17°C (63°F) on warmer days, while December is much colder, with average temperatures sinking to -2°C (29°F) and maximums of only 11°C (52°F). Precipitation is also a significant factor, as April sees around 76 mm (3.0 in) spread over 11 days, whereas December receives a much heftier 147 mm (5.8 in) over 27 days, leading to more frequent rainfall. Humidity levels remain relatively similar, with April at 81% and December just slightly lower at 80%. For more specific insights on December's weather, you can check Otaru weather in December.
As April arrives in Otaru, the weather begins to transition towards more hospitable temperatures, making it a unique time of year compared to the harsher winter months. While the days grow noticeably warmer with occasional highs reaching up to 17°C (63°F), the lingering chill is still evident as nighttime temperatures can dip to a brisk -3°C (26°F). This month typically experiences significant humidity at 81%, accompanied by about 11 days of rainfall, resulting in a total precipitation of 76 mm (3.0 in). Overall, April marks a refreshing shift, showcasing the city's beauty as it emerges from winter's grasp. For a deeper dive into Otaru's climate nuances, visit Otaru Climate.