September · Japan
Best time to visit Hiroshima in September Weather, crowds & prices
Weather in Hiroshima in September
Average temperature 25°C, 156 mm of rain, about 24 days with 6+ hours of sunshine and 79% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
5.6/10
Ranked #10 of 12 months
- Avg temp
- 25°C
- Rainfall
- 156 mm
- Humidity
- 79%
- Days with 6h+ sun
- 24
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Hiroshima scores 5.6/10 for sightseeing and cultural travel - ranked #10 of 12. Expect around 25°C, 156 mm of rain, and roughly 24 days with 6+ hours of sunshine this month.
Peace park memorials and island shrine ferries peak May through September.
September in Hiroshima — middling scores, decent value
September averages 25°C (77°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
Monthly rainfall reaches 156 mm — wet for this destination — but about 24 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 5.6/10 here, 10th of 12 months, against 8.7/10 in the destination's best month.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella.
Figure on low-season pricing, with crowds are light for this destination.
Flexible dates? October scores 3.1 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Hiroshima in September?
- In September, Hiroshima averages 25°C, 156 mm of rain, and about 24 days with 6+ hours of sunshine. Its climate-comfort score is 5.6/10.
- Is September a good time to visit Hiroshima?
- September earns a 5.6/10 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 September?
- Expect about 156 mm of rain in September. Average humidity is 79% and there are about 24 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.