Sōma in September
6.7out of 10
Possible, with caveats
Warm and comfortable: highs around 23°C. Frequent rain: about 14 rainy days.
23°CAvg high
21°CAvg low
14Rainy days (196 mm)
12:14 hDaylight
05:24Sunrise · 17:37 Sunset
Why this score
- Warm and comfortable: highs around 23°C
- Frequent rain: about 14 rainy days
What to wear and pack
- T-shirts and light layers
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in September varies a lot between years (±3.5 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 | 6°C | 3°C | 63 mm | 8 | – | – | 5.5 |
| February | 6°C | 3°C | 53 mm | 8 | – | – | 5.5 |
| March | 9°C | 4°C | 98 mm | 11 | – | – | 5.4 |
| April | 13°C | 9°C | 113 mm | 10 | – | – | 6.1 |
| May | 16°C | 13°C | 121 mm | 11 | – | – | 6.5 |
| June | 20°C | 17°C | 140 mm | 13 | – | – | 6.6 |
| July | 23°C | 21°C | 187 mm | 16 | – | – | 6.5 |
| August | 25°C | 23°C | 149 mm | 13 | – | – | 7.0 |
| September | 23°C | 21°C | 196 mm | 14 | – | – | 6.7 |
| October | 19°C | 15°C | 188 mm | 12 | – | – | 6.5 |
| November | 14°C | 10°C | 77 mm | 8 | – | – | 6.7 |
| December | 9°C | 5°C | 58 mm | 8 | – | – | 5.9 |
Frequently asked questions
How hot is Sōma in September?
Daytime highs average 23°C and nights about 21°C.
When is the best time to visit Sōma?
The best months are August, September, November, June.