Hiroshima · AutumnMonth summary
Hiroshima weather in September
✅ Good
🌡️ Temperature min / max
21°C – 28°C
🌧 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°C.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: Favourable conditions in September (7.7/10). May scores higher but the gap is small.
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
🎯 One of the best months — 28°C, maximum sunshine and ideal conditions Autumn in Hiroshima is often underrated: 28°C, 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.
Browse by month
All months for Hiroshima
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌫️ January | 0°C | 9°C | 22% | 1.7 | 8.6h | 5.3/10 |
| 🌫️ February | 1°C | 10°C | 25% | 2.5 | 9.3h | 5.5/10 |
| ⛅ March | 4°C | 14°C | 32% | 3.9 | 10.1h | 6.4/10 |
| 🌤️ April | 8°C | 18°C | 31% | 5.2 | 10.8h | 7.1/10 |
| 🌤️ May | 13°C | 22°C | 30% | 4.8 | 11.6h | 7.7/10 |
| 🌤️ June | 18°C | 25°C | 48% | 7.6 | 10.1h | 7.4/10 |
| 🌤️ July | 23°C | 29°C | 46% | 9.2 | 11.8h | 7.7/10 |
| 🌤️ August | 24°C | 31°C | 39% | 6.5 | 12.2h | 7.6/10 |
| 🌤️ September | 21°C | 28°C | 47% | 7.0 | 10.0h | 7.7/10 |
| 🌤️ October | 14°C | 22°C | 27% | 3.5 | 9.8h | 7.6/10 |
| ⛅ November | 7°C | 17°C | 19% | 2.1 | 9.9h | 7.2/10 |
| 🌫️ December | 2°C | 11°C | 22% | 1.6 | 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 28°C, 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°C
- 🌧 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 28°C, 10.0h of sunshine and 47% rain, conditions are very favourable.
What to do in Hiroshima in September?
With 28°C max and 10.0h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
Find a place to stay in Hiroshima
Find places to stay in Hiroshima in September
Search on Hotels.com
Activities & tours
Activities and tours in Hiroshima
Guided tours, skip-the-line tickets and local experiences.
Browse activities on GetYourGuide
Flights
Find a flight to Hiroshima
Compare flights from all airlines.
Search flights
←
Explore also
Similar destinations in September
🌍 Top destinations
Other top destinations in September
Dakar
Peru
Turks and Caicos
Guanajuato
Marsa AlamWeather rankings
Compare destinations by weather
Best in EuropeGuides & comparisons