Best months
May, October, and November
Warmest month
August, 33°C
Wettest month
July, 310 mm
Hiroshima weather by month
Average daily high and low, total rainfall and days with at least 2.5 mm of rain.
| Month | High / low | Rain | Verdict |
|---|---|---|---|
| January | 10°C / 1°C | 43 mm · 4 days | Cold |
| February | 11°C / 2°C | 72 mm · 6 days | Cold |
| March | 15°C / 5°C | 123 mm · 8 days | Fair |
| April | 20°C / 10°C | 164 mm · 8 days | Fair |
| May | 25°C / 15°C | 168 mm · 8 days | Great |
| June | 27°C / 20°C | 226 mm · 9 days | Fair |
| July | 31°C / 24°C | 310 mm · 10 days | Hot |
| August | 33°C / 26°C | 152 mm · 7 days | Hot |
| September | 29°C / 22°C | 170 mm · 7 days | Fair |
| October | 24°C / 15°C | 109 mm · 5 days | Great |
| November | 18°C / 9°C | 75 mm · 5 days | Good |
| December | 12°C / 4°C | 60 mm · 4 days | Fair |
Hiroshima by season
Spring
Spring (March to May) is arguably the best time to visit. The weather is mild and pleasant, and the city and Miyajima are adorned with beautiful cherry blossoms (sakura) typically in late March to early April.
- + Perfect mild temperatures
- + Stunning cherry blossoms
- + Comfortable for extensive walking
- − Peak tourist season, especially during sakura
- − Accommodation prices are higher
Summer
Summer (June to September) is hot and humid, with a rainy season (tsuyu) in June/July. August is intensely hot but hosts the poignant Peace Memorial events.
- + Lively festival atmosphere in August
- + Lush green scenery
- + Oysters are out of season, but other seafood is great
- − High heat and humidity (often above 30°C/86°F)
- − Risk of typhoons in late summer
Autumn
Autumn (October to November) offers another excellent window with crisp, cool air and stunning fall foliage (koyo), particularly beautiful on Miyajima and in Hijiyama Park.
- + Comfortable, cool weather
- + Vibrant autumn colors
- + Fewer crowds than spring
- − Can be chilly, especially in late November
- − Days are shorter
Winter
Winter (December to February) is cold but rarely sees snow. It's the quietest season and the prime time for enjoying Hiroshima's famous oysters.
- + Lowest tourist crowds
- + Oyster season is at its peak
- + Clear skies and views
- − Chilly temperatures (average around 6°C/43°F)
- − Some outdoor attractions feel bleak
Hiroshima month by month
Hiroshima in January
ColdIn January, Hiroshima averages highs of 10°C and lows of 1°C, with about 4 rainy days and 43 mm of rain. It is cold, so pack warm layers.
Hiroshima in February
ColdIn February, Hiroshima averages highs of 11°C and lows of 2°C, with about 6 rainy days and 72 mm of rain. It is cold, so pack warm layers.
Hiroshima in March
FairIn March, Hiroshima averages highs of 15°C and lows of 5°C, with about 8 rainy days and 123 mm of rain. Expect mixed weather, with comfortable spells.
Hiroshima in April
FairIn April, Hiroshima averages highs of 20°C and lows of 10°C, with about 8 rainy days and 164 mm of rain. Expect mixed weather, with comfortable spells.
Hiroshima in May
GreatIn May, Hiroshima averages highs of 25°C and lows of 15°C, with about 8 rainy days and 168 mm of rain. It is one of the most comfortable months for sightseeing.
Hiroshima in June
FairIn June, Hiroshima averages highs of 27°C and lows of 20°C, with about 9 rainy days and 226 mm of rain. Expect mixed weather, with comfortable spells.
Hiroshima in July
HotIn July, Hiroshima averages highs of 31°C and lows of 24°C, with about 10 rainy days and 310 mm of rain. It is hot, so plan sightseeing for mornings and evenings.
Hiroshima in August
HotIn August, Hiroshima averages highs of 33°C and lows of 26°C, with about 7 rainy days and 152 mm of rain. It is hot, so plan sightseeing for mornings and evenings.
Hiroshima in September
FairIn September, Hiroshima averages highs of 29°C and lows of 22°C, with about 7 rainy days and 170 mm of rain. Expect mixed weather, with comfortable spells.
Hiroshima in October
GreatIn October, Hiroshima averages highs of 24°C and lows of 15°C, with about 5 rainy days and 109 mm of rain. It is one of the most comfortable months for sightseeing.
Hiroshima in November
GoodIn November, Hiroshima averages highs of 18°C and lows of 9°C, with about 5 rainy days and 75 mm of rain. It is a good month to visit.
Hiroshima in December
FairIn December, Hiroshima averages highs of 12°C and lows of 4°C, with about 4 rainy days and 60 mm of rain. Expect mixed weather, with comfortable spells.
Top tours and experiences in Hiroshima
The tours and tickets travellers book most, with ratings and reviews from Viator.
Hiroshima & Miyajima in 1 Day: Private Tour, Licensed Guide
4.91,590 reviews8h
from €178
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Hiroshima and Miyajima Day Trip with Itsukushima Shrine & Ferry
4.9735 reviews8h
from €41
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All things to do in Hiroshima →
Tours and prices from Viator, a Tripadvisor company. Prices change with your dates. We may earn a commission if you book, at no extra cost to you.
Plan your Hiroshima trip
Best time to visit Hiroshima: FAQ
What is the best month to visit Hiroshima?+
October is the most comfortable month on average, with highs of 24°C. May and November are close behind.
What is the rainiest month in Hiroshima?+
July is the wettest month, with about 310 mm of rain.
How hot does Hiroshima get?+
August is the warmest month, with average highs of 33°C and lows of 26°C. The coldest nights come in January, averaging 1°C.
Averages for 2006–2025 from the HIROSHIMA weather station (2 km from the centre), NOAA Global Historical Climatology Network. Verdicts rate sightseeing comfort from daytime highs and rainy days.