Last updated: August 21, 2025
April in Okayama, Japan brings a delightful mix of spring warmth and refreshing showers. With maximum temperatures reaching a pleasant 26°C (79°F) and an average of 15°C (59°F), locals and visitors alike relish in the blossoming landscape. However, the month also sees a cool minimum dipping to 1°C (34°F), reminding us that early spring can still surprise. Rain is a frequent guest, contributing to a total precipitation amount of 119 mm (4.7 in) over approximately 8 wet days, while the humidity hovers around 74%, adding a lush brightness to the scenery. Expect a vibrant tapestry of cherry blossoms intermingling with cozy, rainy moments that define this enchanting season.
In April, Okayama, Japan, experiences a delightful transition from the chill of winter to the warmth of spring. With minimum temperatures starting at 1°C (34°F), the city begins to shake off the cold, while the average temperature rises to a pleasant 15°C (59°F). As the month progresses, daytime highs can reach a comfortable 26°C (79°F), perfect for outdoor exploration. This significant increase in warmth compared to March, where the average was only 10°C (51°F), ushers in a vibrant landscape as cherry blossoms bloom and the natural beauty of Okayama flourishes. Overall, April serves as a wonderful bridge to the balmy months ahead, inviting locals and visitors alike to savor its mild climate and the seasonal awakening of nature.
In April, Okayama experiences a noticeable uptick in precipitation, recording 119 mm (4.7 in) over the month, making it one of the wetter periods of the year. With rainfall on 8 days, this marks a substantial increase compared to the drier months of January through March. The transition into spring is clearly marked by this elevation in moisture, contributing to the lush greenery that characterizes the landscape. As the month progresses, the consistent rainfall sets the stage for the impending monsoon season, which begins in June, ultimately leading to even higher precipitation levels in the months ahead. This pattern reflects a significant shift towards a more humid climate, transitioning from the relatively arid conditions of winter to the wetness of the approaching summer.
In April, Okayama experiences a slight dip in humidity, averaging around 74%, which marks a transition into the more humid months ahead. While this level offers some respite from the heavy moisture of winter, it is still notably higher than earlier months, such as January and February, where humidity levels soared at 82% and 79%, respectively. As the region moves into late spring, humidity begins a steady climb, reaching peaks of 84% in May and escalating to 86% by June. This gradual increase hints at the characteristic warmth and moisture that will define Okayama’s summer months, making April a brief interlude before the sweltering humidity takes hold.
In April, Okayama, Japan, experiences a significant shift in UV exposure, with the UV Index soaring to 11—classified as extreme. This marks a striking increase from March's very high UV Index of 8, reducing safe sun exposure time to just 10 minutes before the risk of burning becomes serious. As the month unfolds, the trend of elevated UV levels continues, carrying into May and June with equal intensity. Residents and visitors should take precautions to protect their skin, especially during this peak period. For more insights into UV conditions throughout the year, visit Okayama UV Index.
UV Risk Categories
As April unfolds in Okayama, Japan, the city basks in 281 hours of sunshine—a delightful increase from March's 259 hours. This upward trend not only signals the arrival of spring but also sets the stage for the sunniest months ahead. With May expected to shine even brighter at 294 hours, residents and visitors alike can revel in the warm, vibrant days that characterize this picturesque season. The data suggests a gradual rise in sunshine hours, peaking in August at 302 hours, before tapering back down in the fall. April serves as a pivotal month, bridging the chill of winter with the radiant warmth of summer, inviting everyone to explore the beauty and blooming landscapes of Okayama.
In Okayama, Japan, April sees a 47% chance of sunny weather, presenting a slight dip from the preceding months of January and February, which boast higher probabilities of sunshine at 49% and 54% respectively. March shows an even lower likelihood at 40%, indicating a trend towards more variability as spring unfolds. Following April, the chances continue to decline, dropping to 31% in May and 26% during the summer months, suggesting that while April may bring some sun, the subsequent months will predominantly lean towards more overcast conditions. Notably, the return of brighter days occurs in the fall, with October and November both returning to 56%, showcasing the region's seasonal shifts in weather patterns.
As spring unfolds in Okayama, Japan, April brings a delightful increase in daylight duration, offering approximately 13 hours of sunshine each day. This marks a significant leap from March's 11 hours, indicating the blossoming brightness typical of the season. The daylight hours continue to shine brightly, matching May, and hint at the longer days that follow in June and July, which will peak at 14 hours. As the year progresses, daylight gently recedes, creating a rhythmic ebb and flow, with the promise of summer warmth just around the corner. Overall, April serves as a charming transition, welcoming longer days that invite outdoor adventures and the beauty of nature in full bloom.
In Okayama, Japan, the April winds offer a refreshing embrace, averaging a gentle 2.9 m/s (6-7 mph). This consistency mirrors the preceding months, with March also recording the same wind speed. However, as spring blossoms, the breath of the wind feels invigorating after the cooler winter months, where January and February showcased slightly higher speeds of 3.2 m/s and 3.5 m/s, respectively. As the year progresses into summer, wind speeds typically taper down, indicating a shift towards the more stagnant, warmer months. Ultimately, April serves as a delightful transition, reflecting the balance of nature as it stirs awake from winter's slumber, inviting everyone to bask in the light, breezy atmosphere.
Weather in Okayama varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Okayama, focusing on differences in temperature, rainfall, humidity, and UV levels.
April and January present a stark contrast in weather patterns. In April, temperatures range from a minimum of 1°C (34°F) to a comfortable maximum of 26°C (79°F), with an average of 15°C (59°F). The month sees about 119 mm (4.7 in) of precipitation spread over 8 days, resulting in a humidity of 74%. In comparison, January features lower temperatures, with a minimum of -3°C (26°F), an average of 6°C (42°F), and a maximum of 16°C (62°F). Precipitation is also significantly less, totaling 33 mm (1.3 in) over just 3 days, accompanied by a higher humidity level of 82%. For more detailed insights on January weather, you can check this link: Okayama weather in January.
April generally presents milder and more varied temperatures compared to February. With minimum temperatures around 1°C (34°F) and average highs rising to 26°C (79°F), April experiences a comfortable average of 15°C (59°F) that is a stark contrast to February's chillier average of 6°C (43°F) and minimum lows of -5°C (23°F). Additionally, while April has a higher total precipitation of 119 mm (4.7 in) spread across 8 days, February sees less rain at 47 mm (1.9 in) over just 5 days. The humidity in April is slightly lower at 74% compared to February’s 79%, making April feel fresher as it transitions into warmer spring weather. For more insights on February's weather, you can visit Okayama weather in February.
April's weather marks a notable transition from the cooler days of March. With minimum temperatures rising to 1°C (34°F) compared to March's low of -2°C (29°F), April provides a more temperate experience. The average temperature in April reaches 15°C (59°F), significantly warmer than March's average of 10°C (51°F), while the maximum temperature in April can climb to 26°C (79°F), showcasing a peak for the season. Precipitation also increases slightly, with April receiving 119 mm (4.7 in) over 8 days, compared to March's 94 mm (3.7 in) over 9 days, and humidity remains relatively stable at 74% in April versus 73% in March. For more detailed insights, you can check Okayama weather in March.
April and May present a noticeable transition in weather conditions. In April, temperatures range from a cool minimum of 1°C (34°F) to a more pleasant average of 15°C (59°F), with a peak of 26°C (79°F). This month experiences a total precipitation of 119 mm (4.7 in) over about 8 days, accompanied by moderate humidity levels at 74%. In contrast, May offers warmer temperatures, with a minimum of 7°C (45°F), an average of 20°C (68°F), and a maximum reaching 32°C (89°F). While precipitation in May slightly decreases to 114 mm (4.5 in), it occurs over 9 days, and humidity rises to 84%. These changes highlight the gradual warming and increased moisture that characterizes the shift from April to May. For more detailed weather information, you can check Okayama weather in May.
April and June presents a noticeable contrast in weather patterns. April experiences cooler temperatures, ranging from a minimum of 1°C (34°F) to a maximum of 26°C (79°F), with an average of 15°C (59°F). This chilly month sees 119 mm (4.7 in) of precipitation across 8 rainy days, accompanied by a humidity level of 74%. In comparison, June warms up significantly, with temperatures fluctuating between a minimum of 12°C (54°F) and a maximum of 33°C (91°F), averaging 23°C (74°F). However, June is wetter, with 153 mm (6.0 in) of rainfall spread over 12 days and higher humidity at 86%. This shift makes June feel much more humid and rainier compared to the cooler and drier April. For more details, check Okayama weather in June.
April and July present contrasting weather dynamics. In April, temperatures range from a minimum of 1°C (34°F) to a maximum of 26°C (79°F), with an average of 15°C (59°F). The month sees moderate precipitation of 119 mm (4.7 in) over about 8 days, accompanied by a humidity level of 74%. In stark contrast, July experiences significantly higher temperatures, with a minimum of 20°C (68°F) and a maximum soaring to 37°C (99°F), leading to an average temperature of 27°C (81°F). However, July is also much wetter, with total precipitation reaching 291 mm (11.5 in) over 17 days and humidity climbing to 92%. For more detailed information, you can check Okayama weather in July.
April and August present distinctly different weather profiles. In April, temperatures range from a cool minimum of 1°C (34°F) to a pleasant average of 15°C (59°F), peaking at 26°C (79°F), accompanied by a moderate rainfall of 119 mm (4.7 in) over 8 days and a humidity level of 74%. In contrast, August offers significantly warmer conditions, with temperatures starting at a minimum of 18°C (65°F) and soaring to an average of 29°C (85°F), reaching as high as 37°C (99°F). Rainfall increases to 171 mm (6.7 in) over 11 days, and humidity rises to a notable 92%. This stark contrast in temperature and humidity highlights the transition from spring to summer. For more detailed insights into August weather, you can visit Okayama weather in August.
April and September showcase contrasting weather patterns. In April, temperatures range from a chilly 1°C (34°F) at night to a mild average of 15°C (59°F) during the day, peaking at 26°C (79°F). The month experiences a fair amount of precipitation, with 119 mm (4.7 in) falling over approximately 8 days and humidity levels averaging 74%. In contrast, September offers significantly warmer temperatures, with lows around 12°C (54°F) and an average high of 25°C (77°F), soaring up to a scorching 36°C (97°F) in some instances. Rainfall increases in September, with 203 mm (8.0 in) recorded over about 12 days and higher humidity at 87%. For a more detailed look at what to expect, check out Okayama weather in September.
April and October showcase distinct weather patterns as spring transitions to autumn. In April, temperatures range from a chilly 1°C (34°F) at night to a mild 26°C (79°F) during the day, with an average temperature of 15°C (59°F). The month experiences moderate rainfall with about 119 mm (4.7 in) over approximately 8 days and a humidity level of 74%. In contrast, October brings warmer nights, with minimum temperatures of 7°C (45°F) and daytime highs reaching up to 32°C (90°F), averaging 19°C (67°F). Rainfall increases to 169 mm (6.7 in) over 11 days, and humidity rises to 85%. For a more detailed look at October weather, visit Okayama weather in October.
April and November present distinct contrasts in weather patterns. In April, temperatures range from a minimum of 1°C (34°F) to an average of 15°C (59°F), with a maximum reaching up to 26°C (79°F). The month is characterized by significant precipitation, totalling 119 mm (4.7 in) over 8 days, while humidity remains around 74%. In contrast, November features slightly cooler temperatures, with a minimum of 0°C (32°F) and an average of 13°C (55°F), peaking at 25°C (77°F). Precipitation is considerably lower in November, with just 30 mm (1.2 in) over 3 days and a higher humidity level of 84%. For more details, you can visit Okayama weather in November.
April and December present contrasting weather patterns. In April, temperatures range from a chilly minimum of 1°C (34°F) to a pleasant average of 15°C (59°F), reaching up to 26°C (79°F) on the warmest days. This month experiences higher precipitation, with about 119 mm (4.7 in) spread over 8 days, and an average humidity of 74%. In contrast, December sees colder temperatures, with a minimum of -2°C (29°F) and an average of only 8°C (46°F), though it can still reach a maximum of 20°C (69°F). The precipitation is significantly lower during this month at 45 mm (1.8 in) across just 6 days, and the humidity rises slightly to 82%. For more detailed information, you can check Okayama weather in December.
April in Okayama is a delightful transition into spring, characterized by mild temperatures and a refreshing atmosphere. Unlike the colder months, the days start warming up, inviting you to enjoy the blooming cherry blossoms and vibrant greenery. With notable humidity levels, the air feels alive, albeit sometimes accompanied by light rain, as precipitation occurs on several days of the month. This gentle shift from winter's chill to spring's embrace makes April a truly enchanting time to experience the beauty of Okayama’s landscape. For more detailed information, visit Okayama Climate.