Hiroshima Weather & Climate: Best Time to Visit
Hiroshima, Hiroshima, Japan, sees big temperature differences between seasons, with August peaking at 31°C (88°F) and January dropping to 9°C (48°F).
The city receives considerable rain/snowfall, with around 1650 mm (65 in) annually. July is the wettest month. Sunshine peaks in May, when the city sees around 7.1 hours of sunshine per day.
Monthly Temperature in Hiroshima
Visitors to Hiroshima can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in August to a chilly 9°C (48°F) in the coolest month, January.
Nights vary from 24°C (75°F) in August to around 2°C (36°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Hiroshima
Hiroshima is known for its substantial rain/snowfall, with annual precipitation reaching 1650 mm (65 in). The climate in Hiroshima shows significant variation throughout the year. Expect heavy rainfall in July, the wettest month, with an average of 247 mm (9.7 in) of precipitation over 17 rainy days.
In contrast, the driest month January offers drier and sunnier days, with around 63 mm (2.5 in) of rainfall over 18 rainy days. For more details, please visit our Hiroshima Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Hiroshima
Hiroshima offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between May (7.1 hours daily) and January (4.6 hours daily) provides a bit of variety for visitors and residents.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Hiroshima by Month
The relative humidity is high throughout the year in Hiroshima.
The city experiences its highest humidity in July, reaching 73%. In April, the humidity drops to its lowest level at 61%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Hiroshima 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit Hiroshima
During April, May, August, October and November, Hiroshima experiences its most favorable weather, with temperatures between 17°C (63°F) and 31°C (88°F). These mild conditions make it an excellent time for a visit.The weather does bring rainfall during this period, between 74 mm (2.9 in) and 158 mm (6.2 in).
Plan accordingly for June, July and September, when conditions bring the heaviest precipitation. Wondering where to travel based on your weather preferences? Our recommendation tool helps you find destinations with your ideal climate conditions. Use our weather planner to find your perfect destination.
