Last updated: August 21, 2025
April in Yokohama, Japan, brings a delightful blend of mild temperatures and springtime charm. With maximums reaching 18°C (64°F) and averages around 8°C (46°F), the weather is pleasantly cool, though nights can dip to a brisk 1°C (34°F). This month also experiences 99 mm (3.9 in) of rainfall spread across 13 days, resulting in a humidity level of 78% that contributes to the lush, blooming landscapes. As the city transitions into full bloom, visitors can expect refreshing showers interspersed with sunny spells, making it an ideal time to explore Yokohama's vibrant parks and waterfronts.
In April, Yokohama begins to shake off the chill of winter, welcoming milder temperatures that mark the onset of spring. With minimums around 1°C (34°F) and maximums reaching up to 18°C (64°F), the city transforms into a vibrant landscape filled with blooming cherry blossoms. The average temperature of 8°C (46°F) indicates a steady warming trend, making it a perfect time for outdoor activities and leisurely strolls. As the month progresses, one can feel the promise of warmer days ahead, particularly when compared to the chillier depths of March, highlighting a delightful transition into the season of renewal.
April in Yokohama, Japan, presents a transition into the milder spring months, with an average precipitation of 99 mm (3.9 in) spread over 13 days. This marks a slight rise compared to March's 89 mm (3.5 in), hinting at a trend where the rainfall begins to increase as the season progresses. While the number of rainy days in April remains relatively low, it lays the groundwork for the wetter months ahead, particularly June and July, which see significant upticks in both total rainfall and rainy days. Consequently, as April showers gently nurture the awakening flora, they signify the approach of the lush and vibrant summer season, where up to 203 mm (8.0 in) of rain can be expected in August.
In April, Yokohama experiences a mild level of humidity at 78%, serving as a transitional moment between the drier months of winter and the onset of summer's sweltering heat. This slight increase from March's 77% indicates the approach of warmer weather, as humidity levels begin to rise in the following months. As the city moves into May, humidity jumps to a notable 86%, marking the start of a trend that sees humidity peak during the summer, reaching a staggering 97% in August. Thus, April plays a crucial role in setting the stage for the humid conditions that characterize Yokohama's summer months, while still offering a brief respite from the more intense moisture to come.
April marks a significant shift in the UV Index for Yokohama, Japan, rising sharply to 8, categorized as very high. This increase reflects the transition into sunnier months, when residents should be particularly cautious, as the risk of skin damage becomes pronounced with a rapid burn time of just 15 minutes. Compared to earlier months where the UV Index ranged from 3 to 5 and classified as moderate, April serves as a reminder that protective measures, such as sunscreen and appropriate clothing, become essential. As the UV levels continue to climb in May and June, hitting 9 and 10 respectively, it's clear that the importance of sun safety will only grow. For more detailed information and trends throughout the year, visit the Yokohama UV Index.
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As spring blossoms in Yokohama, Japan, April stands out with a remarkable 275 hours of sunshine, marking a sharp rise from the previous months. Following the upward trajectory from March's 252 hours, this sunny month signals the transition into warmer weather and longer days, inviting locals and visitors alike to enjoy outdoor activities. This increase sets the stage for May's peak of 294 hours, highlighting a delightful trend of growing sunshine as spring unfolds. The consistent climb from winter to spring not only enhances the city's vibrant atmosphere but also reflects the awakening of nature in this bustling port city, making April a cherished month for sun-seekers.
As spring unfolds in Yokohama, the likelihood of sunny weather sees a notable increase, with April boasting a 46% chance of sunshine. This marked rise from the preceding months of March and February, which hover around 36% and 37% respectively, suggests that April is a prime time for those seeking to bask in the sun's warmth. In contrast to the more subdued sunshine chances during the summer months of July and August, which dip to 33% and 25%, April offers a refreshing opportunity for outdoor activities and enjoying the blooming cherry blossoms. Overall, April stands out as a month where the sun makes its presence felt, inviting locals and tourists alike to revel in the beauty of the season.
As spring unfolds in Yokohama, April brings a delightful increase in daylight, with the sun gracing the city for an invigorating 13 hours each day. This marks a significant leap from March's 11 hours, reflecting the transition into the brighter days that characterize the season. The gradual lengthening of daylight continues into May, where residents can bask in an impressive 14 hours of sunshine. This upward trend in daylight duration from January's 9 hours is a welcome change, allowing for more outdoor activities and vibrant blossoms as nature awakens. As daylight reaches its peak in June, it sets the tone for the longer days that define this engaging time of year in Yokohama.
In April, the winds in Yokohama shift noticeably, with an average speed of 6.0 m/s (13 mph), just slightly lower than the brisk breezes of March. This gentle decline reflects a transition as spring sets in, heralding the arrival of warmer temperatures and blooming landscapes. The wind’s steady yet calming presence contrasts with the higher speeds experienced earlier in the year, particularly in January and February, where gusts reached around 8.1 m/s (18 mph) and 8.4 m/s (19 mph), respectively. As the months progress into May, the winds continue to soften, hinting at a more tranquil atmosphere perfect for enjoying the vibrant sights of spring in this bustling port city.
Weather in Yokohama varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Yokohama, focusing on differences in temperature, rainfall, humidity, and UV levels.
April weather is noticeably milder compared to January, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 18°C (64°F), creating an average of 8°C (46°F). In contrast, January sees colder temperatures, with a minimum of -7°C (19°F) and a maximum of 8°C (46°F), averaging only 1°C (34°F). While both months experience similar precipitation levels—99 mm (3.9 in) in April and 97 mm (3.8 in) in January—April has fewer rainy days (13 days) compared to January's 19 days. Additionally, humidity levels are quite similar, with April at 78% and January at 79%. For a more detailed look at January weather, visit Yokohama weather in January.
In comparison to February, April brings noticeably warmer temperatures, with averages climbing from 0°C (33°F) in February to 8°C (46°F) in April. February experiences colder nights, with a minimum temperature of -7°C (20°F), whereas April's lows are much milder at 1°C (34°F). However, February sees slightly higher precipitation at 108 mm (4.3 in) over 21 days, compared to April's 99 mm (3.9 in) across 13 days. Despite these differences, both months maintain the same humidity level at 78%. For more detailed information, you can check Yokohama weather in February.
In comparing the weather between March and April, April generally offers milder temperatures, with average highs reaching 18°C (64°F) compared to March's 14°C (58°F). While March starts heavier with colder nights, averaging a minimum of -4°C (26°F), April sees a more pleasant low of 1°C (34°F). Precipitation levels are slightly higher in April at 99 mm (3.9 in) over 13 days, whereas March records 89 mm (3.5 in) across 14 days. Overall, both months feature similar humidity levels, with April at 78% and March at 77%. For more detailed information about March weather, you can visit Yokohama weather in March.
April and May exhibit notable differences in weather patterns. In April, temperatures range from a chilly minimum of 1°C (34°F) to a maximum of 18°C (64°F), with an average of 8°C (46°F). The month also sees significant precipitation, accumulating to 99 mm (3.9 in) over 13 days, and maintains a relatively high humidity level of 78%. In contrast, May experiences a milder climate, with temperatures starting at a minimum of 6°C (44°F) and peaking at 23°C (74°F), averaging 12°C (55°F). Despite a slight increase in total precipitation to 101 mm (4.0 in) over 12 days, the humidity rises to 86%, contributing to a more humid atmosphere. For more detailed information about the weather in May, you can visit Yokohama weather in May.
April and June present contrasting weather patterns, with April being cooler and wetter. In April, temperatures range from a chilly minimum of 1°C (34°F) to a maximum of 18°C (64°F), with an average of 8°C (46°F). The month experiences about 99 mm (3.9 in) of rainfall over 13 days, and the humidity sits at 78%. In comparison, June warms up significantly, with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 24°C (76°F) and an average of 16°C (61°F). Although June has more precipitation at 123 mm (4.9 in) over 12 days, the humidity rises to a higher 91%. For more specific information on June weather, you can check Yokohama weather in June.
April weather is characterized by cooler temperatures, with a minimum of 1°C (34°F) and an average of 8°C (46°F), making it a much chillier month compared to July. In contrast, July brings warm temperatures, with a minimum of 14°C (57°F) and an average of 20°C (69°F), peaking at a maximum of 28°C (83°F). While both months receive precipitation on about 13 days, July experiences a higher total rainfall of 128 mm (5.0 in), compared to April's 99 mm (3.9 in). Additionally, humidity levels rise significantly in July to 95%, compared to April's 78%, creating a much muggier feel during the summer month. For more detailed information, you can check Yokohama weather in July.
April and August present a striking contrast in weather. In April, temperatures typically range from a chilly 1°C (34°F) to a mild 18°C (64°F), with an average of 8°C (46°F). The month sees about 99 mm (3.9 in) of precipitation spread over 13 days, coupled with a humidity level of 78%. On the other hand, August offers a much warmer experience, with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 29°C (85°F) and an average of 22°C (72°F). However, it also brings increased rainfall, totaling 203 mm (8.0 in) across 15 days, along with a higher humidity of 97%. For a closer look at the August conditions, check out Yokohama weather in August.
April and September present contrasting weather characteristics in terms of temperature and humidity. In April, the temperatures range from a chilly minimum of 1°C (34°F) to a comfortable maximum of 18°C (64°F), with an average of 8°C (46°F). This month also brings significant precipitation, totaling 99 mm (3.9 in) over 13 days, and a humidity level of 78%. Conversely, September boasts warmer temperatures, with a minimum of 14°C (57°F) and a maximum reaching up to 28°C (82°F), averaging at 20°C (69°F). Although September has slightly higher precipitation at 113 mm (4.5 in) over 12 days, the humidity rises to 89%, creating a more humid atmosphere compared to April. For more details, check out Yokohama weather in September.
April and October present notable differences in weather patterns. April typically experiences cooler temperatures with a minimum of 1°C (34°F) and an average of 8°C (46°F), while October enjoys milder conditions, starting at a minimum of 8°C (47°F) and averaging 16°C (60°F). Additionally, October tends to be wetter, with precipitation reaching 168 mm (6.6 in) over the same number of rainy days as April, which sees a total of 99 mm (3.9 in). Humidity levels also slightly increase in October, registering at 81% compared to April's 78%. For more details, check out Yokohama weather in October.
April and November exhibit similar humidity levels at 78%, but their temperatures vary slightly, with April having a marginally warmer average of 8°C (46°F) compared to November's 9°C (49°F). In April, temperatures can reach a maximum of 18°C (64°F), while November peaks at 17°C (63°F). Both months experience comparable precipitation, with April receiving 99 mm (3.9 in) over 13 days and November accumulating 94 mm (3.7 in) across 17 days, reflecting a few more rainy days in the latter month. For more details on November weather, visit Yokohama weather in November.
April and December exhibit distinctly different weather patterns. April experiences milder temperatures, ranging from a minimum of 1°C (34°F) to a maximum of 18°C (64°F), with an average of 8°C (46°F). The month sees a relatively moderate precipitation of 99 mm (3.9 in) over 13 days, coupled with a humidity level of 78%. In contrast, December is significantly colder, with temperatures ranging from a low of -4°C (24°F) to a high of 14°C (58°F), and an average temperature of 3°C (38°F). This month also has higher precipitation, totaling 151 mm (6.0 in) over 26 days, while the humidity remains comparable at 77%. For more detailed information, you can check Yokohama weather in December.
April in Yokohama marks a notable transition as the city shakes off the chill of winter. While temperatures begin to rise, the pleasant, mild days are often accompanied by increased precipitation, making this month wetter than its predecessors. The combination of moderate temperatures and a humid environment sets the stage for the blossoming of spring, creating a vibrant atmosphere as nature awakens. With an average humidity of 78%, the air feels fresh yet moist, which contrasts sharply with the drier winter months. For a deeper dive into how Yokohama’s climate evolves throughout the year, visit Yokohama Climate.