Last updated: August 21, 2025
June in Unzen, Japan welcomes the warmth of summer, with temperatures soaring to a maximum of 32°C (90°F) and an average of 24°C (75°F). The month experiences a notable minimum temperature of 16°C (60°F), creating pleasantly mild evenings. However, visitors should be prepared for the significant rainfall, with a total of 262 mm (10.3 in) spread over 15 days, contributing to the region's lush landscapes. With humidity levels reaching 86%, the atmosphere is often moist, enhancing the vibrant natural beauty that Unzen is renowned for during this time of year.
In June, Unzen, Japan experiences a delightful transition into summer, with temperatures reflecting a significant rise. The minimum temperature climbs to a pleasant 16°C (60°F), while the average hovers around a comfortable 24°C (75°F). This warmth peaks at a delightful 32°C (90°F), inviting locals and visitors alike to enjoy the lush landscapes and vibrant outdoor activities. Compared to the previous months, June marks a clear shift; gone are the cool winter and early spring chill, making way for balmy days that set the perfect atmosphere for exploration and relaxation. As the month progresses, the increasing warmth hints at the high temperatures that July and August will bring, making June an ideal time to savor the pleasant summer ahead.
June in Unzen, Japan, marks a significant jump in precipitation, with an impressive 262 mm (10.3 in) of rain falling over 15 days. This marked increase not only signals the arrival of the peak rainy season but also reflects a consistent upward trend in monthly rainfall, as May already brings 214 mm (8.4 in). The rising moisture levels set the stage for the even more intense showers of July, when precipitation surges to 475 mm (18.7 in). This pattern highlights the region's transition from the milder, spring rains to the stormier, summer months, exemplifying Unzen's dynamic weather shifts.
In June, Unzen, Japan, experiences a notable rise in humidity, reaching 86%, which sets the stage for the sizzling summer ahead. This month serves as a transition, showcasing a steady increase from 75% in January to a peak during the summer months. May already hints at this trend with 84% humidity, but June truly ushers in the sticky warmth as it edges closer to the extreme moisture levels of July and August—both exceeding 90%. The consistent elevation in humidity throughout the spring hints at the lush, vibrant landscapes that characterize the region during this season, making Unzen a beautiful, albeit humid, destination.
In June, Unzen, Japan experiences an extreme UV Index of 11, consistent with the high levels seen in May and April. As summer unfolds, this trend of elevated UV exposure continues, highlighting the need for sun protection as the burn time drops to just 10 minutes. The intensity peaks with the approach of July and August, where the UV Index rises to 12, emphasizing the urgency for precautions against harmful skin exposure. With a dynamic range from moderate in January to extreme in the summer months, it’s crucial to stay informed and vigilant. For more insights on UV exposure throughout the year, visit the Unzen UV Index.
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As June arrives in Unzen, Japan, the city basks in 255 hours of sunshine, a slight dip from the vibrant spring months that peaked in April with 282 hours of radiant light. This month marks a transition, where the days gradually lengthen further as summer approaches, contrasting with the earlier chill of winter's 180 hours in January. Following June, July brings a slight increase in sunshine to 267 hours, paving the way for the warm embrace of August, which boasts the year's highest total at 300 hours. Observing these trends, it’s clear that Unzen's summers are characterized by abundance, while spring teases with its spectacular sunshine moments, making the sunshine in June particularly cherished as a harbinger of summer's full bloom.
In June, the likelihood of sunny weather in Unzen, Japan, drops to 21%, marking the beginning of a trend toward cooler and cloudier conditions as summer approaches. This decline follows May's relatively brighter skies, which see a 28% chance of sunshine. As we delve deeper into the summer months, July and August offer even less optimism for sun-seekers, with chances plummeting to 20% and 27%, respectively. Interestingly, this pattern contrasts sharply with the clearer days that await in October, when the likelihood of sunshine rises significantly to 64%. Overall, June presents a pivotal moment in the seasonal transition, where sunny days become an elusive prospect, urging visitors to prepare for more overcast skies in the weeks to come.
As June arrives in Unzen, Japan, the days continue to lengthen, offering 14 hours of daylight to enjoy the warm, vibrant atmosphere of early summer. This marks a notable trend as daylight steadily increases from January's modest 10 hours to May's 13 hours before reaching its peak in June. Following this high point, the length of daylight will hold steady through July before gradually tapering off in the late summer and early autumn months. This rhythmic ebb and flow of daylight not only signifies the changing seasons but also enhances the opportunity for outdoor activities and exploration, making Unzen a splendid getaway during this time of year.
In June, Unzen, Japan, experiences a notable dip in wind speed, averaging just 1.6 m/s (4 mph), making it the calmest month of the year. This reduction in winds reflects a significant shift from the breezier conditions of the earlier months, where January through May consistently saw speeds around 2.6 to 3.1 m/s (6 to 7 mph). As summer approaches, the wind picks up again in July and August, with speeds returning to the 2.5 to 2.7 m/s (6 mph) range. Overall, June stands out as a tranquil interlude, offering a serene atmosphere that contrasts with the more energetic breezes of the surrounding months.
Weather in Unzen varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in Unzen, focusing on differences in temperature, rainfall, humidity, and UV levels.
June and January present starkly contrasting weather conditions. In June, temperatures range from a cool 16°C (60°F) to a warm 32°C (90°F), with an average of 24°C (75°F). This month is characterized by high humidity at 86% and significant rainfall, totaling 262 mm (10.3 in) across 15 days. Conversely, January experiences much cooler temperatures, with a range from -2°C (29°F) to a mild 19°C (66°F) and an average of 8°C (46°F). The precipitation is notably lower at 53 mm (2.1 in) occurring over just 6 days, accompanied by a lower humidity level of 75%. For more detailed information, check the link: Unzen weather in January.
June and February offer stark contrasts in weather conditions. June boasts a much warmer climate, with average temperatures around 24°C (75°F) and maximums reaching 32°C (90°F), accompanied by high humidity of 86%. The month also sees significant rainfall, totaling 262 mm (10.3 in) over approximately 15 days. In contrast, February presents a chillier scene, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 22°C (71°F) and an average of just 8°C (48°F). February's precipitation is notably lower at 92 mm (3.6 in) over 9 days, with a more comfortable humidity level of 71%. For a more detailed look at February's climate, you can visit Unzen weather in February.
When comparing the weather in June and March, we notice a significant shift in temperature and precipitation patterns. June experiences a warmer climate with minimums around 16°C (60°F) and daily averages of 24°C (75°F), peaking at 32°C (90°F). In contrast, March is much cooler, starting with lows of 3°C (37°F) and averages of 12°C (55°F), with a maximum reaching 24°C (76°F). Additionally, June is characterized by higher humidity levels at 86% and more frequent rainfall, accumulating around 262 mm (10.3 in) over 15 days. Meanwhile, March has lower humidity at 71% and less precipitation, totaling 145 mm (5.7 in) over 11 days. For a deeper dive into the specific weather conditions for that month, check out Unzen weather in March.
June and April exhibit distinct differences in weather patterns. In June, temperatures range from a minimum of 16°C (60°F) to a maximum of 32°C (90°F), with an average of 24°C (75°F), making it significantly warmer than April, which sees temperatures between 5°C (41°F) and 29°C (84°F), averaging at 16°C (62°F). Additionally, June is characterized by higher humidity at 86% and more precipitation, with 262 mm (10.3 in) spread over 15 days, compared to April's 135 mm (5.3 in) over 8 days. The overall feel of June is much more tropical, whereas April offers a more transitional, mild climate. For more detailed insights, you can explore Unzen weather in April.
In comparing the weather conditions of June and May, June tends to be warmer with an average temperature of 24°C (75°F) compared to May's 21°C (69°F). The minimum temperatures in June are notably higher at 16°C (60°F), while May starts off cooler at 10°C (50°F). Maximum temperatures also peak slightly higher in June, reaching up to 32°C (90°F) versus May's 30°C (86°F). However, June is significantly wetter, with precipitation totaling 262 mm (10.3 in) over 15 days, compared to May's 214 mm (8.4 in) over 12 days. Additionally, humidity levels increase slightly in June to 86%, compared to 84% in May. For a closer look at May weather specifics, visit Unzen weather in May.
In June, temperatures range from a minimum of 16°C (60°F) to a maximum of 32°C (90°F), with an average of 24°C (75°F). The month experiences considerable rainfall, totaling 262 mm (10.3 in) over 15 days, coupled with a high humidity level of 86%. In contrast, July sees warmer temperatures, with a minimum of 20°C (68°F) and a peak reaching 37°C (99°F), averaging at 27°C (82°F). However, it also brings increased precipitation, measuring 475 mm (18.7 in) over 19 days, and humidity rises slightly to 92%. For more detailed weather patterns specific to this month, you can refer to Unzen weather in July.
In comparing the weather between June and August, June experiences milder temperatures, with a minimum of 16°C (60°F) and an average of 24°C (75°F), while August is noticeably warmer, featuring a minimum temperature of 20°C (68°F) and an average of 29°C (85°F). The maximum temperature in August can rise to a scorching 39°C (102°F), significantly higher than June's maximum of 32°C (90°F). Both months see substantial precipitation, with June receiving 262 mm (10.3 in) over about 15 days and August slightly wetter at 303 mm (11.9 in) over 14 days. Humidity levels are also higher in August at 91% compared to June's 86%. For more specific details about August weather, you can visit Unzen weather in August.
In June, the weather features a minimum temperature of 16°C (60°F) and an average of 24°C (75°F), with highs reaching up to 32°C (90°F). This month experiences significant precipitation of 262 mm (10.3 in) over approximately 15 rainy days, combined with high humidity levels at 86%.
In contrast, September sees slightly warmer average temperatures, with a minimum of 16°C (62°F), an average of 25°C (78°F), and maximum temperatures peaking at 35°C (94°F). The total precipitation decreases to 228 mm (9.0 in), also spread over about 15 days, resulting in marginally lower humidity at 84%. Overall, September's weather offers a warmer and slightly drier alternative to June's more humid conditions. For more details, visit Unzen weather in September.
June and October present quite distinct weather patterns. In June, temperatures range from a minimum of 16°C (60°F) to a maximum of 32°C (90°F), with an average of 24°C (75°F). This month is marked by high humidity levels at 86% and considerable precipitation, totaling 262 mm (10.3 in) over about 15 days. In contrast, October sees cooler temperatures, with a minimum of 10°C (50°F) and a maximum of 33°C (91°F), averaged at 21°C (69°F). Rainfall is significantly reduced to 120 mm (4.7 in) over roughly 9 days, accompanied by a slightly lower humidity of 83%. Overall, October offers a milder, drier climate compared to the humid and wet conditions of June. For more specific details about the climate in October, you can visit Unzen weather in October.
June and November present notably different weather conditions. June is characterized by warm temperatures, with minimums around 16°C, averages of 24°C, and maximums reaching 32°C. However, it also experiences significant rainfall, accumulating 262 mm over about 15 days, along with high humidity levels at 86%. In contrast, November offers cooler weather, featuring minimums of 3°C, averages of 15°C, and maximums of 25°C. Precipitation is much lighter, totaling 80 mm over approximately 8 days, with humidity slightly lower at 81%. For more details on November weather in Unzen, please visit Unzen weather in November.
The weather in June is typically warm and humid, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 32°C (90°F) and an average of 24°C (75°F). This month also experiences significant rainfall, with 262 mm (10.3 in) of precipitation spread over 15 days. In contrast, December brings much cooler temperatures, with a minimum of 0°C (33°F), an average of 10°C (49°F), and a maximum of 24°C (76°F). Precipitation in December is considerably lower, totaling 89 mm (3.5 in) across just 7 days, and humidity levels decrease to 79%. For further details on December weather, you can visit Unzen weather in December.
As June unfolds in Unzen, the weather presents a striking contrast to the cooler spring months. With warm temperatures peaking at 32°C (90°F) and an average of 24°C (75°F), residents and visitors alike can bask in the arrival of summer. However, this month also brings a notable increase in precipitation, with nearly half the days experiencing rain, resulting in an atmosphere saturated with humidity at 86%. This unique concoction of warmth and moisture not only sets the stage for lush greenery but also invites a refreshing, albeit wet, experience. For those planning a visit, it’s essential to embrace the dynamic June climate and make the most of this vibrant season. For more insights, visit Unzen Climate.