Hachimantai in September
7.0out of 10
Possible, with caveats
Mild: highs around 21°C. Frequent rain: about 13 rainy days.
21°CAvg high
14°CAvg low
13Rainy days (139 mm)
12:15 hDaylight
05:22Sunrise · 17:37 Sunset
Why this score
- Mild: highs around 21°C
- Frequent rain: about 13 rainy days
What to wear and pack
- Layers you can add or remove
- A light jacket for cooler evenings
- Rain jacket or compact umbrella
How reliable is the forecast?
Rainfall in September is fairly consistent from year to year (2.0 days). 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 | -1°C | -8°C | 60 mm | 11 | – | – | 3.7 |
| February | 0°C | -8°C | 60 mm | 11 | – | – | 3.7 |
| March | 4°C | -4°C | 89 mm | 14 | – | – | 4.0 |
| April | 11°C | 3°C | 90 mm | 14 | – | – | 5.4 |
| May | 17°C | 9°C | 93 mm | 13 | – | – | 6.5 |
| June | 21°C | 13°C | 106 mm | 13 | – | – | 7.0 |
| July | 24°C | 18°C | 143 mm | 17 | – | – | 6.6 |
| August | 25°C | 18°C | 142 mm | 15 | – | – | 6.8 |
| September | 21°C | 14°C | 139 mm | 13 | – | – | 7.0 |
| October | 15°C | 7°C | 109 mm | 11 | – | – | 6.4 |
| November | 8°C | 1°C | 76 mm | 12 | – | – | 5.1 |
| December | 2°C | -5°C | 74 mm | 12 | – | – | 3.7 |
Frequently asked questions
How hot is Hachimantai in September?
Daytime highs average 21°C and nights about 14°C.
When is the best time to visit Hachimantai?
The best months are June, September, August, July.