Average annual temperature is 11.4 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -12.2 °C
Number of sunny days: 79 days
Number of rainy days: 222 days
Number of snow days: 64 days
Look at detailed online map of Sōma
* Weather data for Sōma Japan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 9.8 | 8.2 | 16.5 | 20.1 | 24.5 | 26.9 | 31.1 | 34.2 | 30.3 | 20.7 | 21.7 | 13.0 |
| Average daytime temperature (°C) | -0.4 | 0.8 | 8.9 | 13.2 | 18.0 | 23.0 | 26.8 | 31.1 | 25.6 | 17.0 | 10.5 | 3.2 |
| Average temperature (°C) | -2.7 | -1.3 | 4.8 | 9.0 | 13.6 | 19.3 | 23.5 | 27.0 | 21.7 | 13.3 | 7.4 | 0.7 |
| Average night temperature (°C) | -4.7 | -3.2 | 1.6 | 5.9 | 10.2 | 16.5 | 20.9 | 24.2 | 19.1 | 10.5 | 4.7 | -1.8 |
| Absolute minimum temperature (°C) | -12.2 | -8.0 | -2.7 | 0.9 | 2.2 | 11.3 | 15.9 | 22.5 | 12.9 | 4.2 | -4.0 | -7.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.7 | 5.4 | 7.9 | 8.5 | 9.6 | 8.0 | 9.0 | 11.4 | 7.4 | 7.7 | 4.7 | 3.5 |
| Precipitation (mm) | 113 | 106 | 105 | 193 | 139 | 159 | 220 | 113 | 169 | 152 | 213 | 123 |
| Sunny days | 1 | 1 | 17 | 9 | 12 | 6 | 8 | 6 | 5 | 9 | 3 | 2 |
| Rainy days | 6 | 8 | 11 | 20 | 19 | 24 | 23 | 25 | 25 | 22 | 23 | 16 |
| Snow days | 24 | 19 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 13 |
The best time to visit Sōma during the most sunny months:
The largest precipitation sum in Sōma is at