Weather Score #

See best time to visit

Hiroshima

Details

Best months

August 59%July 50%September 44%

Months to avoid

February 20%January 21%December 21%

Heat Seeker Score

Heat Seeker Score is a composite score designed for those who crave hot, sunny weather with minimal rainfall. It prioritizes high temperatures and abundant sunshine.

Use the detailed page for charts, component scores, and weather inputs behind every monthly ranking.

Yearly weather

Calculations are based on the last 8 years of historical weather data.

Temperatures #

Hiroshima experiences comfortable temperatures from May to October
August has the highest maximum temperature (87.4°F), which falls into the discomfort range
December, January, and February have minimum temperatures in the discomfort range (35.4-39.0°F)
April, May, June, July, September and October experiences comfort temperatures.

Maximum Temperatures

Minimum Temperatures

Maximum/minimum temperature averages are computed by averaging the max/min temperature of each day for a given period.

Conditions #

In Hiroshima, the months of May and April experience the highest total sun hours, reaching 7.2h and 6.2h respectively, while December records the least at 3.2h.
Precipitation levels are relatively low in the winter months, particularly in December and October, with only 0.05in and 0.06in of rain, showcasing a drier trend during this season.
Interestingly, the late spring and early summer months display a balance of moderate sun hours and slightly increasing precipitation, with June having both 5.1h of sunshine and 0.29in of rain. This pattern indicates a shift towards more varied weather as the year progresses.

Sunny Weather

Period	Hiroshima
Jan	3.7 hours/day
Feb	4.1 hours/day
Mar	5.0 hours/day
Apr	6.4 hours/day
May	6.9 hours/day
Jun	6.1 hours/day
Jul	4.9 hours/day
Aug	5.5 hours/day
Sep	3.6 hours/day
Oct	5.3 hours/day
Nov	5.9 hours/day
Dec	3.4 hours/day
Average	5.1 hours/day

Sun hours are computed from the number of hours of direct sunlight. The length of the day can affect these measurements; for example, northern cities have longer days in summer.

Precipitation Levels

Average amount of precipitation that falls in a form of a rain, snow, sleet or hail.

Wind Speed

Humidity

Daylight Hours #

In Hiroshima, sunrise occurs earliest in June at 04:58 and latest in January at 07:15, indicating a significant variation in morning light throughout the year. Conversely, sunsets are latest in June at 19:23 and earliest in December at 17:02, which together with the sunrise data highlights a pronounced seasonal shift.
The shortest day length is observed in December at just 9 hours and 54 minutes, while the longest day spans 14 hours and 25 minutes in June. This stark contrast emphasizes the impact of seasonal changes on daylight duration, directly influencing daily activities and lifestyle in the city.

Sunrise Time

Sunrise times are output in the local timezone of each place.

Sunset Time

Sunset times are output in the local timezone of each place.

Useful Day Length

Period	Hiroshima
Jan	10:09 hours
Feb	10:53 hours
Mar	11:18 hours
Apr	11:42 hours
May	12:05 hours
Jun	12:23 hours
Jul	12:22 hours
Aug	11:56 hours
Sep	11:16 hours
Oct	10:36 hours
Nov	10:07 hours
Dec	9:54 hours
Average	11:12 hours

Discards daylight hours before 7 AM. In places that are located to the west of the timezone, the sun rises and sets later compared to the cities that are located to the east. This means that the useful day length is longer in the cities located to the west of the time zone.

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Weather in Hiroshima

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