April Weather in Hiroshima, Japan

Last updated: August 21, 2025

Hiroshima in April offers a delightful transition into spring, with maximum temperatures reaching a comfortable 26°C (79°F) and an average of 13°C (56°F). Visitors can expect cool evenings, as minimum temperatures can drop to a brisk -1°C (31°F). The month is relatively wet, with 128 mm (5.0 in) of rainfall spread across 9 days, contributing to a humidity level of 75% that brings life to the blooming landscapes. Experience the charm of Hiroshima as it awakens from winter slumber, making April a perfect time for exploration and appreciation of its cultural heritage amidst vibrant seasonal changes.

April Temperature in Hiroshima

April in Hiroshima marks a delightful transition into spring, where temperatures begin to rise significantly compared to the lingering chill of winter. With minimum temperatures hovering around -1°C (31°F) and averages climbing to 13°C (56°F), the city starts to embrace milder weather. Daytime highs can reach a pleasant 26°C (79°F), allowing residents and visitors alike to enjoy the blossoming cherry blossoms and vibrant outdoor activities. This month serves as a refreshing herald of warmer days ahead, as the city bids adieu to the brisk conditions of March, setting the stage for the sun-soaked warmth that May brings. The gradual increase in temperatures not only enhances the city's natural beauty but also invites a sense of rejuvenation in the atmosphere.

April Weather in Hiroshima: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Hiroshima, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hiroshima, April typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec394048566571788173635243
Data source: Temperature data for Hiroshima generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Hiroshima

April marks a notable peak in precipitation in Hiroshima, Japan, with an average of 128 mm (5.0 in) of rainfall. This increase from March's 120 mm (4.7 in) reflects the transition into the region's lush spring season, where nature awakens and blossoms begin to flourish. Interestingly, while April experiences some of the heaviest rainfalls of the year, it maintains a relatively steady count of 9 precipitation days, mirroring the drier months of January and February. This consistency is essential for supporting the area's vibrant flora while setting the stage for the more intense rainfall that arrives in June and July. Overall, April serves as a vital bridge between the heavier downpours of winter and the lush growth of summer, highlighting the dynamic climate of this beautiful region.

April Precipitation Trends in Hiroshima

The chart displays monthly precipitation patterns in Hiroshima, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Hiroshima, April typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec54671201281211773922572311643966
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

April Humidity in Hiroshima

In April, Hiroshima experiences a notable shift in humidity, averaging around 75%. This figure marks a slight increase from the 69% recorded in March, signaling the transition into a more humid season. As spring unfolds, residents can expect a comfortable yet slightly damp atmosphere, preceding the substantial rise in humidity seen in May and June. While April offers a reprieve from the peak summer humidity levels of 95% in July, it still lays the groundwork for the wetter months ahead. Thus, the changing humidity levels not only reflect the seasonal shift but also hint at the lush, vibrant landscapes that spring will soon bring.

April Average Humidity in Hiroshima

This chart illustrates the average monthly humidity levels in Hiroshima, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Hiroshima is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%72%69%75%84%88%95%93%84%79%76%75%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Hiroshima

In April, Hiroshima experiences a significant spike in the UV Index, reaching an extreme level of 11. This marks a notable increase from the moderate levels observed earlier in the year, where January and February had indices of 4 and 5, respectively. By March, the UV intensity jumps to 8, indicating the onset of stronger sun exposure as spring unfolds. However, April’s sun demands attention, as the burn time reduces to just 10 minutes—a stark reminder for residents and visitors to take precautions. The trend of extreme UV levels continues into May and June, underscoring the need for sun safety practices during this vibrant season. For those looking to navigate the UV landscape of Hiroshima, detailed information can be found at Hiroshima UV Index.

Maximum UV Index Levels in Hiroshima for April

The chart shows the monthly maximum UV Index (UVI) for Hiroshima in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Hiroshima typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458111111121210764
Data source: Hiroshima April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

April Sunshine in Hiroshima

April brings a delightful increase in sunshine to Hiroshima, Japan, where residents bask in 282 hours of golden rays, marking a significant rise from the 266 hours recorded in March. As spring unfolds, the city transitions into a season of blooming flowers and warmer days, trending upwards toward the sunniest month of the year, which is May with 303 hours of light. This gradual ascent in sunlight not only enhances the beauty of Hiroshima's landscapes but also lifts the spirits of its inhabitants, inviting outdoor activities and vibrant festivals. With each passing month, the growing warmth heralds the approach of summer, making April a pivotal time of renewal and rejuvenation.

Monthly Sunshine Duration in Hiroshima: April Highlighted

The April sunshine duration represents the total number of hours Hiroshima experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec184h227h266h282h303h291h281h308h260h254h237h220h
Data source: Hiroshima April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Hiroshima During April

April in Hiroshima brings a moderately optimistic chance of sunshine, with 46% likelihood of sunny days. This marks a subtle improvement from the preceding months of March and January, which both hover around 37% and 38%, respectively. As spring sets in, sunlight becomes more prevalent compared to the winter months, with February recording a 48% chance. However, as the region approaches the summer months, the sun's presence begins to wane significantly, dropping to 30% in May and further to 25% by June. Thus, while April offers a refreshing blooming optimism for sunny days, it also hints at the balancing act of fleeting sun as the hotter months approach.

Percentage of Sunny Days in April in Hiroshima

The chart illustrates the percentage of sunny days in Hiroshima throughout the year, with April highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Hiroshima experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec38%48%37%46%30%25%23%25%28%56%50%50%
Data source: Hiroshima April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hiroshima in April

As spring unfolds in Hiroshima, April marks a delightful transition, with daylight extending to an inviting 13 hours. This increase reflects a gradual trend that begins in March, when days lengthen to 11 hours, and continues through to May, which also enjoys 13 hours of daylight. Such a boost in sunlight not only brightens the landscape but also ushers in a sense of rejuvenation, paving the way for the vibrant growth that characterizes the season. Looking ahead, June and July will further amplify this trend, reaching up to 14 hours of daylight, ensuring that residents can fully embrace the warmth and beauty that spring and summer bring.

Average Daylight Hours in Hiroshima for April

The chart illustrates the variation in daylight duration in Hiroshima throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 7m10h 55m11h 58m13h 2m13h 56m14h 24m14h 10m13h 23m12h 21m11h 17m10h 21m9h 53m
Data source: Hiroshima daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Hiroshima

In April, the wind in Hiroshima settles into a gentle rhythm, maintaining an average speed of 2.6 m/s (6 mph), consistent with the previous month. This steady breeze, characteristic of the spring season, provides a refreshing relief as the city transitions from cooler temperatures to warmer days. Interestingly, April's wind speed mirrors that of both March and May, highlighting a tranquil trend that continues as nature awakens and blossoms. As summer approaches, one can expect the winds to shift slightly, but for now, the calm pace of April invites leisurely strolls beneath the blooming cherry blossoms, creating a perfect blend of serenity and beauty in the air.

Average April Wind Speed in Hiroshima

The chart displays monthly wind speed patterns in Hiroshima, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.83.02.62.6 m/s2.61.82.02.42.12.02.43.0
Data source: Hiroshima April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Hiroshima Compares to Other Months

Weather in Hiroshima varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Hiroshima, focusing on differences in temperature, rainfall, humidity, and UV levels.

April and January in Hiroshima reveal stark contrasts in weather. April boasts a much milder temperature range, with averages around 13°C (56°F) and highs reaching 26°C (79°F), while January's chill sees average temperatures of just 4°C (39°F) and a maximum of 14°C (58°F). Additionally, April experiences significantly more precipitation, totaling 128 mm (5.0 in) over 9 days, compared to January's 54 mm (2.1 in), which also falls over the same number of days. Both months share similar humidity levels, hovering around 75% for April and slightly higher at 76% for January, but the overall feel of April is decidedly warmer and more vibrant. For more detailed insights, you can check Hiroshima weather in January.

April generally experiences milder temperatures compared to February, with average highs reaching 13°C (56°F) in April, compared to just 5°C (41°F) in February. The minimum temperature in April is also notably higher at -1°C (31°F), whereas February can drop to a chilly -7°C (19°F). Additionally, April sees more precipitation, totaling 128 mm (5.0 in) over 9 days, compared to February’s 67 mm (2.6 in) over the same number of days. Humidity levels remain slightly elevated in April at 75%, compared to 72% in February. For more detailed information on February weather, check out Hiroshima weather in February.

In comparing the weather of April and March, we observe a noticeable increase in temperature, with April averaging 13°C (56°F) compared to March's 9°C (48°F). The maximum temperature in April can reach up to 26°C (79°F), significantly warmer than March's max of 22°C (71°F). Precipitation levels are slightly higher in April at 128 mm (5.0 in) over 9 days, versus March's 120 mm (4.7 in) over 12 days, indicating a more consistent but less frequent rainfall. Additionally, April experiences higher humidity levels at 75%, compared to 69% in March. For more details on the conditions in March, you can refer to Hiroshima weather in March.

April and May present a notable contrast in weather patterns. In April, temperatures range from a chilly minimum of -1°C (31°F) to a pleasant average of 13°C (56°F), peaking at 26°C (79°F). The month is characterized by relatively high precipitation, totaling 128 mm (5.0 in) over 9 days, and a humidity level of 75%. In comparison, May brings warmer temperatures with a minimum of 5°C (42°F), an average of 18°C (65°F), and a maximum reaching 30°C (86°F). Although May sees slightly less precipitation at 121 mm (4.8 in) across the same number of rainy days, the humidity rises to 84%, adding to the overall warmth of the month. For more detailed information, you may refer to Hiroshima weather in May.

April and June exhibit notably different weather patterns. In April, temperatures range from a chilly minimum of -1°C (31°F) to a comfortable maximum of 26°C (79°F), with an average of 13°C (56°F). This month sees about 128 mm (5.0 in) of precipitation spread over 9 days, and humidity levels hover around 75%. In contrast, June presents a much warmer climate with temperatures fluctuating between 11°C (52°F) and a maximum of 30°C (87°F), averaging around 21°C (71°F). However, June is also wetter, receiving 177 mm (7.0 in) of rain over 14 days, and the humidity rises to 88%. For more detailed insights, check out Hiroshima weather in June.

April and July present stark contrasts in weather patterns. In April, temperatures range from a chilly minimum of -1°C (31°F) to a comfortable average of 13°C (56°F), peaking at 26°C (79°F). The month experiences significant rainfall, with 128 mm (5.0 in) spread over 9 days, contributing to a humidity level of 75%. In contrast, July boasts much warmer temperatures, with a minimum of 17°C (64°F), an average of 26°C (78°F), and maximums reaching up to 35°C (96°F). The month is notably wetter, with precipitation at 391 mm (15.4 in) over 19 days and higher humidity at 95%. For more detailed insights into July weather in Hiroshima, check Hiroshima weather in July.

April and August present stark contrasts in weather conditions. In April, temperatures range from a chilly minimum of -1°C (31°F) to a comfortable maximum of 26°C (79°F), with an average of 13°C (56°F). The month sees about 128 mm (5.0 in) of precipitation over approximately 9 days, accompanied by a humidity level of 75%. In contrast, August boasts warmer weather, with minimum temperatures of 17°C (63°F) and highs that can reach 36°C (97°F), averaging around 27°C (81°F). However, it also experiences significantly higher rainfall, totaling 257 mm (10.1 in) over 14 days, along with increased humidity at 93%. For a deeper look into August weather specifics, check out Hiroshima weather in August.

April and September present notably different weather patterns. In April, temperatures range from a chilly minimum of -1°C (31°F) to a mild average of 13°C (56°F), peaking at 26°C (79°F). The month experiences approximately 128 mm (5.0 in) of rainfall over about 9 days, with a humidity level of 75%. In contrast, September sees a warmer climate, with minimum temperatures starting at 12°C (54°F) and an average temperature of 23°C (73°F), reaching highs of 33°C (92°F). This month is also wetter, receiving around 230 mm (9.1 in) of precipitation across 14 days, along with increased humidity at 84%. For more insights, check out Hiroshima weather in September.

April and October exhibit notable differences in weather patterns despite their proximity in the seasonal calendar. In April, temperatures swing from a chilly minimum of -1°C (31°F) to a comfortable average of 13°C (56°F) and can reach as high as 26°C (79°F). The month sees a significant amount of precipitation, totaling 128 mm (5.0 in) over about 9 days, coupled with a humidity level of 75%. Conversely, October enjoys milder temperatures, with minimal readings of 5°C (41°F), an average of 17°C (63°F), and a maximum of 28°C (84°F). This month also records higher rainfall, amounting to 164 mm (6.5 in) across around 11 days and a slight increase in humidity to 79%. For a more detailed look at October’s climate, you can visit Hiroshima weather in October.

April and November show some similarities in temperature, with both months featuring a minimum of -1°C (31°F). However, April tends to be warmer overall, boasting an average temperature of 13°C (56°F) and a maximum of 26°C (79°F), compared to November's average of 11°C (52°F) and maximum of 23°C (75°F). Additionally, April experiences significantly more rainfall, with 128 mm (5.0 in) falling over 9 days, while November only sees 39 mm (1.5 in) over 5 days. Humidity levels remain fairly similar, with April at 75% and November slightly higher at 76%. For a closer look at November weather specifically, you can check out Hiroshima weather in November.

April and December exhibit distinct differences in weather patterns. In April, temperatures range from a minimum of -1°C (31°F) to a maximum of 26°C (79°F), with an average of 13°C (56°F). This month experiences more precipitation, totaling 128 mm (5.0 in) over approximately 9 days, contributing to a relatively humid atmosphere with 75% humidity. In contrast, December features cooler temperatures, with a minimum of -2°C (28°F) and a maximum of 20°C (68°F), averaging around 6°C (43°F). Precipitation is lower in December at 66 mm (2.6 in), spread across roughly 10 days, while maintaining the same humidity level of 75%. For more details about the weather in December, you can visit Hiroshima weather in December.

Compare Hiroshima's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Hiroshima

As April graces Hiroshima, it ushers in milder temperatures compared to the chill of winter, with a noticeable rise in both day and night averages. The region sees a pleasant blend of warmth and humidity, making it a refreshing time for outdoor activities. However, with 9 days of precipitation and a higher humidity level, occasional showers can be expected, adding a layer of atmosphere to the blossoming spring scenery. This transition into the warmer season makes April distinctly inviting, a contrast to the colder months and a precursor to the summer heat. For more insights on weather patterns, visit Hiroshima Climate.