Hiroshima in September
6.9out of 10
Possible, with caveats
Warm and comfortable: highs around 27°C. Frequent rain: about 13 rainy days.
27°CAvg high
19°CAvg low
13Rainy days (188 mm)
12:12 hDaylight
05:58Sunrise · 18:11 Sunset
Why this score
- Warm and comfortable: highs around 27°C
- Frequent rain: about 13 rainy days
- Rain varies a lot between years (±4.2 days)
What to wear and pack
- T-shirts and light layers
- Shorts or a light skirt
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in September varies a lot between years (±4.2 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 8°C | 0°C | 56 mm | 9 | – | – | 5.4 |
| February | 9°C | 1°C | 68 mm | 10 | – | – | 5.5 |
| March | 13°C | 4°C | 110 mm | 12 | – | – | 5.8 |
| April | 18°C | 9°C | 125 mm | 11 | – | – | 6.8 |
| May | 23°C | 13°C | 141 mm | 11 | – | – | 7.3 |
| June | 25°C | 18°C | 220 mm | 15 | – | – | 6.4 |
| July | 29°C | 22°C | 246 mm | 17 | – | – | 6.1 |
| August | 31°C | 23°C | 159 mm | 15 | – | – | 6.3 |
| September | 27°C | 19°C | 188 mm | 13 | – | – | 6.9 |
| October | 22°C | 13°C | 108 mm | 9 | – | – | 7.8 |
| November | 16°C | 7°C | 70 mm | 8 | – | – | 7.0 |
| December | 10°C | 2°C | 64 mm | 10 | – | – | 5.8 |
Frequently asked questions
How hot is Hiroshima in September?
Daytime highs average 27°C and nights about 19°C.
When is the best time to visit Hiroshima?
The best months are October, May.