March Weather in Hiroshima, Japan

Last updated: August 21, 2025

In Hiroshima, Japan, March ushers in a transitional climate characterized by a maximum temperature of 22°C (71°F) and an average of 9°C (48°F). While early spring brings a chance to enjoy milder days, it can also present brisk moments, with minimum temperatures dropping to -2°C (29°F). This month experiences approximately 120 mm (4.7 in) of rainfall over about 12 days, contributing to a humidity level of 69%. Such conditions weave a tapestry of vibrant blossoms and refreshing breezes, making March a unique time to experience the beauty of Hiroshima.

March Temperature in Hiroshima

In March, as spring emerges in Hiroshima, temperatures begin to rise, making it a delightful time to experience the city's transformation. The month sees a minimum temperature of around -2°C (29°F), climbing to an average of 9°C (48°F) and peaking at a pleasant 22°C (71°F). This shift signifies not just warmer days, but also a gradual transition from the chill of winter, encouraging locals and visitors alike to venture outdoors and embrace the blossoming cherry blossoms. As the average temperature inches closer to the more comfortable mid-teens in the following month, March serves as a pivotal moment, blending the remnants of winter with the promise of spring's warmth.

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

The chart illustrates March 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, March 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.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Hiroshima

March in Hiroshima marks a noticeable uptick in precipitation, with a total of 120 mm (4.7 in) recorded over 12 days. This increase follows the trend of gradually rising rainfall amounts from the winter months, reflecting the shift towards the wetter season. As the city transitions into spring, the impending bloom of cherry blossoms is often accompanied by these refreshing showers, providing essential moisture for nature's revival. Notably, precipitation in March sets the stage for a pattern that peaks in the summer, particularly in July, when rainfall soars dramatically. Thus, while March brings significant rainfall, it also signifies the gradual buildup to Hiroshima's humid monsoon season.

March Precipitation Trends in Hiroshima

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

In March, Hiroshima begins to feel the gentle transition into spring, with humidity levels dropping to 69%—the lowest for the year thus far. This decrease follows a pattern from the winter months when humidity was consistently higher, peaking at 76% in January and 72% in February. As the city embraces warmer weather, humidity begins to rise once more, reaching 75% by April. This trend reflects the broader seasonal shifts in the region, where increasing temperatures often bring higher moisture levels. March's drier air offers a brief respite, making it a delightful time to explore the blossoming cherry trees before the humidity climbs again in the bustling summer months.

March Average Humidity in Hiroshima

This chart illustrates the average monthly humidity levels in Hiroshima, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, 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 March generated using information from the Copernicus Climate Change Service.

March UV Index in Hiroshima

As March arrives in Hiroshima, Japan, residents and visitors should prepare for a notable shift in the sun's intensity. With a UV Index soaring to 8, categorized as very high, the risk of harm from unprotected sun exposure increases significantly, requiring just 15 minutes for skin to start burning. This marks a sharp contrast from the earlier months of the year, where UV levels were much more moderate. As spring unfolds, vigilance against sun exposure becomes essential, a trend that will only elevate in the coming months. Shifting toward extreme levels by April, with an Index of 11, the importance of protective measures continues to grow. For more information on how to stay safe under the sun, check out Hiroshima UV Index.

Maximum UV Index Levels in Hiroshima for March

The chart shows the monthly maximum UV Index (UVI) for Hiroshima in March, 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 March, the maximum UV index in Hiroshima typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458111111121210764
Data source: Hiroshima March 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.

March Sunshine in Hiroshima

March in Hiroshima marks a delightful transition into spring, with sunshine hours peaking at 266. This increase not only outshines February's cool 227 hours but also sets the stage for an even sunnier April, where the days become longer and warmer. It’s a time when cherry blossoms begin to bloom, bathing the city in shades of pink and creating a vibrant atmosphere that encourages outdoor activities. As the months progress toward summer, the ascent in sunshine continues, with May boasting a magnificent 303 hours, allowing residents and visitors alike to fully bask in Hiroshima's radiant charm. The steady rise in daylight hours highlights the region's shift from winter's chill to the inviting warmth of a Japanese spring and summer.

Monthly Sunshine Duration in Hiroshima: March Highlighted

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

Chance of Sun in Hiroshima During March

As March arrives in Hiroshima, the likelihood of sunny weather hovers at 37%, a slight dip from February’s 48% but similar to January's 38%. This trend suggests a transition toward spring, where sunshine becomes increasingly elusive as the region anticipates wetter months ahead. Following March, April shows a modest rebound to 46%, indicating a gradual improvement in sunny days as nature comes alive. However, the subsequent months see a shift, with May dropping significantly to 30%, before falling further in the summer. Overall, while March presents some chances for sun, the season's volatility reminds us that in Hiroshima, Mother Nature often likes to keep us guessing.

Percentage of Sunny Days in March in Hiroshima

The chart illustrates the percentage of sunny days in Hiroshima throughout the year, with March 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 March chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hiroshima in March

As March unfolds in Hiroshima, the days gradually lengthen, bringing 11 hours of daylight—a welcome shift from the consistent 10 hours seen in the previous two months. This transition marks the beginning of a luminous trend, setting the stage for the longer days of spring and early summer. By April, daylight will stretch further to 13 hours, continuing to increase through June when it reaches its peak at 14 hours. As we move into the warmer months, the length of daylight not only enhances outdoor activities but also offers a vibrant backdrop for the cherry blossoms, emblematic of the region's beauty during this time of year.

Average Daylight Hours in Hiroshima for March

The chart illustrates the variation in daylight duration in Hiroshima throughout the year, with March 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.

March Winds in Hiroshima

In March in Hiroshima, Japan, the average wind speed settles at 2.6 m/s (6 mph), showcasing a slight dip from the preceding month's 3.0 m/s (7 mph). This gentle breeze accompanies the arrival of spring, transforming the landscape as cherry blossoms bloom. Interestingly, the wind speed remains consistent as the region transitions into April and May, illustrating a stable climate perfect for outdoor explorations. As the summer months approach, the winds begin to soften further, reaching as low as 1.8 m/s (4 mph) in June. Overall, March is characterized not only by the winds themselves but also as a pivotal moment of change, heralding warmer, more vibrant days ahead.

Average March Wind Speed in Hiroshima

The chart displays monthly wind speed patterns in Hiroshima, with values for each month shown alongside March's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how March's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.83.02.6 m/s2.62.61.82.02.42.12.02.43.0
Data source: Hiroshima March wind data, generated using information from the Copernicus Climate Change Service.

How March 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 March’s weather to other months in Hiroshima, focusing on differences in temperature, rainfall, humidity, and UV levels.

In comparing the weather of March and January, March offers a more temperate climate with average temperatures ranging from -2°C (29°F) to 22°C (71°F) and an average of 9°C (48°F). This contrasts sharply with January's colder conditions, where temperatures fluctuate between -7°C (20°F) and 14°C (58°F), with an average of only 4°C (39°F). Additionally, March sees significantly more precipitation, totaling 120 mm (4.7 in) over 12 days, compared to January's 54 mm (2.1 in) across 9 days. The humidity levels are slightly lower in March at 69%, as opposed to January's 76%. For further details on January's weather, you can explore Hiroshima weather in January.

March generally sees milder and more variable weather compared to February. The minimum temperature in March is a chilly -2°C (29°F), while February experiences even colder nights with a minimum of -7°C (19°F). Daytime averages also rise in March to about 9°C (48°F), compared to February's average of 5°C (41°F). The maximum temperature in March can reach up to 22°C (71°F), slightly surpassing February’s maximum of 20°C (69°F). Additionally, March brings more precipitation, totaling 120 mm (4.7 in) over 12 days, compared to February's 67 mm (2.6 in) over 9 days. Interestingly, February has a slightly higher humidity level at 72%, compared to March's 69%. For a more detailed look at February weather, refer to Hiroshima weather in February.

March and April show a notable transition in weather patterns. In March, temperatures range from a chilly minimum of -2°C (29°F) to a maximum of 22°C (71°F), with an average of 9°C (48°F). The month experiences moderate precipitation, totaling 120 mm (4.7 inches) over 12 days and a humidity level of 69%. In contrast, April brings slightly warmer temperatures, with a minimum of -1°C (31°F) and a maximum of 26°C (79°F), averaging at 13°C (56°F). Precipitation increases to 128 mm (5.0 inches) but occurs over fewer days, just 9. Humidity also rises to 75%, creating a more humid climate. For further details on April weather in Hiroshima, please visit Hiroshima weather in April.

When comparing the weather between March and May, we see a notable increase in temperatures and humidity. March features a minimum temperature of -2°C (29°F) and an average of 9°C (48°F), while May offers milder conditions with a minimum of 5°C (42°F) and an average of 18°C (65°F). The maximum temperatures also rise significantly, peaking at 22°C (71°F) in March compared to 30°C (86°F) in May. Although both months receive similar amounts of precipitation—120 mm (4.7 in) in March and 121 mm (4.8 in) in May—the number of rainy days is slightly lower in May, with rain occurring on just 9 days compared to 12 days in March. Additionally, May's humidity level increases to 84%, making it feel more sultry than the 69% humidity observed in March. For more detailed information, visit Hiroshima weather in May.

March and June present quite contrasting weather conditions. In March, temperatures range from a chilly minimum of -2°C (29°F) to a milder average of 9°C (48°F), peaking at a comfortable 22°C (71°F). The month experiences about 120 mm (4.7 in) of precipitation over 12 days, with a humidity level of 69%. In juxtaposition, June sees much warmer temperatures, with a minimum of 11°C (52°F) and an average of 21°C (71°F), climbing to a high of 30°C (87°F). This month also brings increased rainfall, totaling 177 mm (7.0 in) across 14 days, and a higher humidity of 88%. For a more detailed look at June's weather, you can check Hiroshima weather in June.

March and July present strikingly different weather patterns, reflecting the transition from early spring to the height of summer. In March, temperatures range from a chilly minimum of -2°C (29°F) to a mild average of 9°C (48°F), peaking at a maximum of 22°C (71°F). The month experiences around 120 mm (4.7 in) of precipitation over approximately 12 days, with a humidity level of 69%. In contrast, July boasts much warmer temperatures, with lows around 17°C (64°F) and an average peak of 26°C (78°F), reaching highs of 35°C (96°F). This summer month sees increased rainfall, totaling 391 mm (15.4 in) over about 19 days, and a significantly higher humidity of 95%. For more details on the summer climate, check out Hiroshima weather in July.

March and August present striking differences in weather patterns. In March, temperatures range from a chilly -2°C (29°F) at night to a mild average of 9°C (48°F), peaking at 22°C (71°F) during the day. The month sees around 120 mm (4.7 in) of precipitation spread over 12 days, accompanied by a humidity level of 69%. In contrast, August boasts significantly warmer temperatures, with lows of 17°C (63°F) and average highs reaching 27°C (81°F), occasionally soaring up to 36°C (97°F). Precipitation levels rise substantially to 257 mm (10.1 in) over 14 days, paired with much higher humidity at 93%. For more detailed information on August weather, check out Hiroshima weather in August.

March and September present contrasting weather patterns. In March, temperatures range from a chilly minimum of -2°C (29°F) to a pleasant maximum of 22°C (71°F), with an average temperature of 9°C (48°F). The month experiences about 120 mm (4.7 in) of precipitation over 12 days, along with a humidity level of 69%. In contrast, September boasts much warmer temperatures, with a minimum of 12°C (54°F) and a maximum of 33°C (92°F), averaging around 23°C (73°F). This month is wetter too, with 230 mm (9.1 in) of rain spread over 14 days and higher humidity at 84%. For more details on September weather, you can check out Hiroshima weather in September.

March and October showcase distinct weather patterns that reflect the transition of seasons. In March, temperatures range from a chilly minimum of -2°C (29°F) to a mild average of 9°C (48°F) and can peak at 22°C (71°F). With an average precipitation of 120 mm (4.7 in) over 12 days, the humidity level sits at 69%, indicating a cool and somewhat damp start to spring. In contrast, October experiences a warmer climate, with minimum temperatures at 5°C (41°F), an average of 17°C (63°F), and highs reaching 28°C (84°F). It also sees increased precipitation at 164 mm (6.5 in) over just 11 days, along with a higher humidity of 79%. For more detailed insights on October weather in Hiroshima, you can explore Hiroshima weather in October.

March and November exhibit subtly contrasting weather patterns. In March, temperatures range from a minimum of -2°C (29°F) to a maximum of 22°C (71°F), with an average of 9°C (48°F). The month is characterized by more frequent precipitation, totaling 120 mm (4.7 in) over approximately 12 days and a humidity level of 69%. In contrast, November experiences slightly milder conditions, featuring minimum temperatures of -1°C (31°F) and maximums of 23°C (75°F), with an average temperature of 11°C (52°F). The precipitation in November is notably lower at 39 mm (1.5 in) over just 5 days, accompanied by a higher humidity level of 76%. For more detailed information, check out the Hiroshima weather in November.

March and December present contrasting weather despite similar minimum temperatures. In March, the average temperature reaches a milder 9°C (48°F) compared to December’s cooler 6°C (43°F). Both months experience minimum temperatures of around -2°C, but March enjoys a notably higher maximum of 22°C (71°F) against December's peak of 20°C (68°F). While March sees more precipitation at 120 mm (4.7 in) over 12 days, December has a lighter rainfall of 66 mm (2.6 in) spread across 10 days. Humidity levels are also different, with March at 69% and December slightly higher at 75%. For more details on December's weather, you can visit Hiroshima weather in December.

Compare Hiroshima's Climate with Cities Worldwide

Conclusion: What to Expect From March Weather in Hiroshima

As winter transitions to spring, March in Hiroshima reveals a delightful shift in weather. The average temperatures begin to rise, offering a notable contrast to the colder months, with warmer days inviting outdoor activities. However, occasional chillier spells remind us that winter's grip is not entirely released. While March experiences a moderate amount of precipitation, it marks the beginning of a wetter season, yet the increased humidity adds a refreshing touch to the air. This blend of mild temperatures and occasional rain creates an atmosphere of renewal, making it an inviting time to explore the beauty of Hiroshima. For more insights on seasonal trends, visit Hiroshima Climate.