Last updated: August 21, 2025
June in Hiroshima, Japan, brings a warm embrace, with maximum temperatures reaching up to 30°C (87°F). The average temperature hovers around 21°C (71°F), while nights can cool down to a refreshing 11°C (52°F). This month is characterized by high humidity levels at 88%, creating a muggy atmosphere. Rainfall is significant, with 177 mm (7.0 in) of precipitation spread over approximately 14 days, making it one of the wetter months of the year. Visitors can expect a lush, green landscape, but should prepare for occasional downpours that add to the season's charm.
In June, Hiroshima experiences a delightful transition into summer, with temperatures reflecting a marked rise from the preceding months. The minimum temperature settles at a comfortable 11°C (52°F), while the average creeps up to 21°C (71°F), perfectly embodying the burgeoning warmth. With maximum daytime highs reaching 30°C (87°F), this month sets the stage for a vibrant season ahead. Compared to the preceding months, June not only maintains a pleasant level of humidity but also signposts the shift towards hotter weather, with July and August poised to bring even higher temperatures. This warm and inviting climate encourages both locals and visitors alike to embrace outdoor activities and explore the rich cultural heritage of Hiroshima under the radiant sun.
June marks a significant uptick in precipitation in Hiroshima, Japan, with an impressive 177 mm (7.0 in) of rainfall, making it one of the wettest months of the year. This is a notable increase from the previous months, reflecting the onset of the rainy season. With 14 days of rain, June paves the way for even heavier downpours in July, which records an astonishing 391 mm (15.4 in) over 19 days. This trend highlights the gradual buildup of moisture as summer approaches, contributing to a lush and vibrant landscape. In contrast, the preceding months see much lower rainfall, emphasizing June's pivotal role in the region’s annual climate pattern.
In June, Hiroshima experiences a significant rise in humidity, reaching a notable 88%. This month marks a turning point as the weather transitions from the warm spring months, where humidity levels hovered between 69% and 84%, toward the sweltering summer heat. The increasing humidity foreshadows the peak conditions of July and August, when humidity soars to a staggering 95% and 93%, respectively. This trend highlights how the summer months in Hiroshima can feel particularly sticky and oppressive, as the air becomes saturated, influencing both the climate and comfort levels throughout the city. As June bridges this shift, it sets the stage for the steamy days to come, encapsulating the essence of a humid Japanese summer.
In June, Hiroshima experiences a consistently high UV Index of 11, marking it within the extreme exposure category, with a burn time as short as 10 minutes. This trend of heightened UV levels begins in April and persists through July, showcasing a pattern where warmer months bring increased sun intensity. After a relatively moderate winter and spring, residents and visitors alike must be vigilant as they venture outdoors. It's essential to protect yourself from harmful rays during this time, as the risk of sunburn escalates quickly. For more details and seasonal trends, check out the full information on the Hiroshima UV Index.
UV Risk Categories
June in Hiroshima shines with 291 hours of sunshine, marking a delightful transition into the warm embrace of summer. This month captures the essence of the early summer glow, just slightly below May's generous 303 hours. As spring gives way to summer, Hiroshima enjoys an impressive continuity of sunlight, with June playing a pivotal role in the yearly rhythm. Following the bright push of May, the city's sunny days gracefully set the stage for the peak sunshine of August, which boasts 308 hours. The trend reflects a season brimming with warmth and light, making June a perfect time to embrace outdoor adventures in this vibrant city.
In Hiroshima, June marks the beginning of the summer season, but with a *modest *25% chance of sunny weather, it’s one of the cloudier months. As the year progresses from May, which experiences a somewhat higher 30% chance of sunshine, June stands out for its notably lower likelihood of sunny days. This trend continues into July, as the chances dip to 22%, highlighting a pattern of increasing cloudiness during the peak summer months. Contrasting the gray skies of June and July, October emerges as a beacon of hope with a 56% chance of sun, suggesting that while June may not be the sunniest month, brighter days are just around the corner.
As June arrives in Hiroshima, the city basks in an impressive 14 hours of daylight, marking a peak moment in the seasonal shift towards longer days. This increase continues from the previous months, where daylight gradually ascends from 10 hours in January to 13 hours in both April and May. In June, the sun's generous embrace hints at the warmth of summer, which carries into July with the same duration of daylight. As the year progresses, daylight begins a subtle decline, dropping to 13 hours in August and gently tapering off into the fall months. This rhythmic pattern of lengthening and shortening daylight not only shapes the daily activities of Hiroshima’s residents but also paints a vivid tapestry of seasonal change throughout the year.
In Hiroshima during June, the gentle breezes give way to the warm embrace of summer, with the average wind speed dropping to a soft 1.8 m/s (4 mph). This marks a noticeable dip from the more robust winds of the earlier months, where speeds hovered around 2.6 m/s (6 mph) from January to May. As the city transitions into July, the winds gradually pick up again to 2.0 m/s (4 mph), creating a rhythm that highlights summer’s sultriness. The overall trend reveals how Hiroshima's weather evolves, with the calmer June winds hinting at the hotter days ahead, making it a perfect time for leisurely strolls under the vibrant summer sky.
Weather in Hiroshima varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in Hiroshima, focusing on differences in temperature, rainfall, humidity, and UV levels.
June and January present a stark contrast in weather conditions. In June, temperatures range from a mild 11°C (52°F) to a warm 30°C (87°F), with an average of 21°C (71°F), making it a much warmer month. However, it also experiences higher humidity at 88% and significant rainfall of 177 mm (7.0 in) over approximately 14 days. In contrast, January is much colder, with temperatures fluctuating between a minimum of -7°C (20°F) and a maximum of 14°C (58°F), averaging just 4°C (39°F). This winter month sees less precipitation, totaling 54 mm (2.1 in) over 9 days, and a lower humidity level of 76%. For more details on January weather, check out Hiroshima weather in January.
When comparing the weather in June and February, significant differences become evident. June is characterized by much warmer temperatures, with a minimum of 11°C (52°F) and an average of 21°C (71°F), peaking at 30°C (87°F). In contrast, February experiences a chillier climate, with minimum temperatures plunging to -7°C (19°F) and an average of just 5°C (41°F), even reaching a maximum of 20°C (69°F) on warmer days. Precipitation is notably higher in June, totaling 177 mm (7.0 in) over 14 days, compared to just 67 mm (2.6 in) over 9 days in February. Additionally, humidity levels are higher in June at 88%, while February's humidity sits at a more moderate 72%. For a more detailed look at February’s weather, visit Hiroshima weather in February.
In comparing the weather of June and March, one can see a notable shift in temperature and humidity. June experiences warmer conditions with an average temperature of 21°C (71°F), peaking at a high of 30°C (87°F), while March remains much cooler, with an average of 9°C (48°F) and a maximum of 22°C (71°F). The humidity is significantly higher in June at 88%, contributing to a more humid feel, compared to March's 69%. Precipitation is also more pronounced in June, with 177 mm (7.0 in) falling over 14 days, compared to 120 mm (4.7 in) over 12 days in March. For a more detailed look at March weather, you can visit Hiroshima weather in March.
June and April present distinctly different weather patterns. In June, temperatures range from a low of 11°C (52°F) to a high of 30°C (87°F), making it noticeably warmer than April, which has a minimum of -1°C (31°F) and peaks at 26°C (79°F). Additionally, June experiences higher humidity at 88% and more precipitation, averaging 177 mm (7.0 in) over 14 days, compared to April's 128 mm (5.0 in) spread over 9 days. For more detailed information on April weather, you can check Hiroshima weather in April.
In June, the weather in Hiroshima becomes warmer and slightly more humid compared to May. With average temperatures rising to 21°C (71°F) and reaching a maximum of 30°C (87°F), the month is generally more comfortable. However, June also sees an increase in precipitation, totaling 177 mm (7.0 in) over 14 days, compared to May's 121 mm (4.8 in) spread over 9 days. The humidity levels also climb from 84% in May to 88% in June, creating a more tropical feel. For additional insights, you can check Hiroshima weather in May.
June and July present distinct weather patterns, with July typically being warmer and more humid. In June, temperatures range from a minimum of 11°C (52°F) to a maximum of 30°C (87°F), with an average of 21°C (71°F) and 177 mm (7.0 in) of precipitation over 14 days. In contrast, July sees higher temperatures, with a minimum of 17°C (64°F) and a maximum of 35°C (96°F), averaging 26°C (78°F), and significantly more precipitation at 391 mm (15.4 in) across 19 days. Additionally, humidity also increases in July to 95%, making it feel even warmer. For more details, you can check Hiroshima weather in July.
In June, the weather is generally milder, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 30°C (87°F) and an average of 21°C (71°F). However, it's a relatively wet month, receiving about 177 mm (7.0 in) of precipitation over 14 days, coupled with high humidity at 88%. In contrast, August experiences warmer temperatures, with a minimum of 17°C (63°F) and a peak of 36°C (97°F), leading to a hotter average of 27°C (81°F). August is also rainier, with precipitation reaching 257 mm (10.1 in) over the same number of days and humidity slightly higher at 93%. For a detailed look at weather conditions during this month, visit Hiroshima weather in August.
In June, temperatures range from a cool 11°C (52°F) to a warm 30°C (87°F), with an average of 21°C (71°F). The month sees significant rainfall, totaling 177 mm (7.0 in) over 14 days, and high humidity levels at 88%. In contrast, September experiences slightly warmer temperatures, with a minimum of 12°C (54°F), an average of 23°C (73°F), and a maximum of 33°C (92°F). However, it also brings even more precipitation, totaling 230 mm (9.1 in) across the same number of wet days, but with marginally lower humidity at 84%. This shift indicates that while September is warmer, it is also wetter than June. For more detailed information, you can check Hiroshima weather in September.
June and October in Hiroshima present quite different weather patterns. In June, temperatures range from a minimum of 11°C (52°F) to a maximum of 30°C (87°F), with an average of 21°C (71°F). The month is characterized by high humidity at 88% and significant rainfall, with 177 mm (7.0 in) of precipitation over 14 days. In contrast, October brings cooler temperatures, with a minimum of 5°C (41°F) and a maximum of 28°C (84°F), averaging around 17°C (63°F). Rainfall is slightly lower at 164 mm (6.5 in) over 11 days, and humidity decreases to 79%. For more detailed insights on October weather, check out Hiroshima weather in October.
June and November present stark contrasts in weather conditions. In June, temperatures range from a minimum of 11°C (52°F) to a maximum of 30°C (87°F), with an average of 21°C (71°F), accompanied by high humidity of 88% and significant rainfall totaling 177 mm (7.0 in) over 14 days. In contrast, November experiences much cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 23°C (75°F), leading to an average of 11°C (52°F). Precipitation is also considerably lighter in November, totaling just 39 mm (1.5 in) over 5 days, and the humidity drops to 76%. For more details on November weather specifics, you can check Hiroshima weather in November.
June and December present contrasting weather patterns in terms of temperature, precipitation, and humidity. In June, temperatures range from a minimum of 11°C (52°F) to a maximum of 30°C (87°F), with an average of 21°C (71°F). This month is characterized by high humidity levels at 88% and significant rainfall, totaling 177 mm (7.0 in) over 14 days. In contrast, December offers much cooler conditions, with temperatures dipping to a minimum of -2°C (28°F) and peaking at 20°C (68°F), averaging just 6°C (43°F). Precipitation in December is considerably lower at 66 mm (2.6 in) across 10 days, accompanied by a reduced humidity level of 75%. For more detailed information, you can refer to Hiroshima weather in December.
June in Hiroshima marks a distinct shift in weather compared to the preceding months. As the city transitions into summer, temperatures rise, bringing a warm average of around 21°C, accompanied by high humidity levels reaching 88%. This month typically experiences significant rainfall, with about 177 mm spread across 14 days, setting it apart from the drier spells of spring. The combination of warmth and moisture contributes to a vibrant atmosphere, making June a quintessential time to experience Japan's lush landscapes. For a deeper understanding of what to expect throughout the year, explore more at Hiroshima Climate.