August · Japan
Best time to visit Hiroshima in August Weather, crowds & prices
Weather in Hiroshima in August
Average temperature 27°C, 291 mm of rain, about 26 days with 6+ hours of sunshine and 80% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
3.9/10
Ranked #12 of 12 months
- Avg temp
- 27°C
- Rainfall
- 291 mm
- Humidity
- 80%
- Days with 6h+ sun
- 26
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
August in Hiroshima scores 3.9/10 for sightseeing and cultural travel - ranked #12 of 12. Expect around 27°C, 291 mm of rain, and roughly 26 days with 6+ hours of sunshine this month.
Peace park memorials and island shrine ferries peak May through September.
August in Hiroshima — off-season conditions
August averages 27°C (81°F) and humidity near 80%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
291 mm makes this the wettest stretch of the year, though about 26 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.
It scores 3.9/10 here, 12th of 12 months, against 8.7/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Figure on low-season pricing, with crowds are light for this destination.
Flexible dates? October scores 4.8 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Hiroshima in August?
- In August, Hiroshima averages 27°C, 291 mm of rain, and about 26 days with 6+ hours of sunshine. Its climate-comfort score is 3.9/10.
- Is August a good time to visit Hiroshima?
- August earns a 3.9/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Hiroshima in August?
- Expect about 291 mm of rain in August. Average humidity is 80% and there are about 26 days with 6+ hours of sunshine.
Curated in Hiroshima
Tickets & experiences
Things to do in Hiroshima
Hiroshima, Japan. Live activities and tours from GetYourGuide, matched to this destination.