Hiroshima · AutumnMonth summary
Hiroshima weather in September
✅ Good
🌡️ Temperature min / max
70°F – 82°F
🌧 Rainy days
47% of days
☀️ Sunshine
10.0h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.7/10
📅 📅 Best month
May (7.7/10)
Quick decision
Should you visit Hiroshima in September?
✅ Good
✅ Yes if: you want shoulder-season value — fewer crowds, 28°F.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: September is a good time to visit Hiroshima. May remains slightly better (+0.0 pts).
By trip type
Hiroshima in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ✅ Good
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
Autumn in Hiroshima is often underrated: 28°F, golden light and declining crowds. An interesting window. With 47% of rainy days, always have indoor alternatives planned. A good balance between weather and crowds, even if May (7.7/10) remains theoretically better.
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All months for Hiroshima
Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌫️ January | 32°F | 48°F | 22% | 0.1in | 8.6h | 5.3/10 |
| 🌫️ February | 34°F | 50°F | 25% | 0.1in | 9.3h | 5.5/10 |
| ⛅ March | 39°F | 57°F | 32% | 0.2in | 10.1h | 6.4/10 |
| 🌤️ April | 46°F | 64°F | 31% | 0.2in | 10.8h | 7.1/10 |
| 🌤️ May | 55°F | 72°F | 30% | 0.2in | 11.6h | 7.7/10 |
| 🌤️ June | 64°F | 77°F | 48% | 0.3in | 10.1h | 7.4/10 |
| 🌤️ July | 73°F | 84°F | 46% | 0.4in | 11.8h | 7.7/10 |
| 🌤️ August | 75°F | 88°F | 39% | 0.3in | 12.2h | 7.6/10 |
| 🌤️ September | 70°F | 82°F | 47% | 0.3in | 10.0h | 7.7/10 |
| 🌤️ October | 57°F | 72°F | 27% | 0.1in | 9.8h | 7.6/10 |
| ⛅ November | 45°F | 63°F | 19% | 0.1in | 9.9h | 7.2/10 |
| 🌫️ December | 36°F | 52°F | 22% | 0.1in | 8.6h | 5.9/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Hiroshima averages 82°F, 47% rainy days and 10.0h of sunshine per day. Overall weather score: 7.7/10.
See methodology →
Comparison
September vs May (best month)
The best month is May (score 7.7/10). Difference:
- 🌡️ Max temperature : -6°F
- 🌧 Rainy days : -17%
- ☀️ Sunshine : +1.6h/day
FAQ
FAQ — Hiroshima in September
Is September a good time to visit Hiroshima?
September is an excellent time to visit Hiroshima (score 7.7/10). With 82°F, 10.0h of sunshine and 47% rain, conditions are very favourable.
What to do in Hiroshima in September?
With 82°F max and 10.0h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
Activities and tours in Hiroshima
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