Average annual temperature is 15.2 °C
Absolute maximum temperature: 32.4 °C
Absolute minimum temperature: -8.1 °C
Number of sunny days: 148 days
Number of rainy days: 217 days
Look at detailed online map of Shimo-sōmi
* Weather data for Shimo-sōmi 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) | 19.5 | 17.0 | 22.4 | 24.1 | 29.9 | 30.5 | 30.7 | 32.4 | 31.4 | 24.9 | 23.4 | 20.1 |
| Average daytime temperature (°C) | 9.4 | 11.6 | 16.0 | 18.4 | 21.9 | 24.6 | 28.3 | 27.2 | 27.7 | 21.2 | 16.6 | 11.4 |
| Average temperature (°C) | 4.6 | 6.8 | 11.2 | 13.9 | 17.7 | 20.9 | 24.7 | 24.2 | 23.4 | 16.1 | 11.9 | 6.9 |
| Average night temperature (°C) | 1.1 | 3.1 | 7.6 | 10.4 | 14.3 | 18.2 | 22.2 | 22.2 | 20.7 | 12.5 | 8.4 | 3.7 |
| Absolute minimum temperature (°C) | -8.1 | -4.2 | -0.9 | 4.6 | 9.4 | 14.4 | 21.0 | 20.9 | 18.4 | 8.3 | 1.3 | -6.2 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.3 | 11.0 | 12.0 | 13.0 | 13.8 | 14.2 | 14.0 | 13.3 | 12.4 | 11.4 | 10.5 | 10.1 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 7.6 | 6.7 | 7.7 | 7.7 | 8.6 | 6.6 | 9.7 | 8.1 | 10.0 | 8.5 | 8.6 | 7.2 |
| Precipitation (mm) | 59 | 182 | 192 | 216 | 214 | 534 | 167 | 721 | 89 | 67 | 44 | 109 |
| Sunny days | 21 | 16 | 13 | 13 | 10 | 8 | 0 | 3 | 1 | 21 | 22 | 20 |
| Rainy days | 10 | 12 | 18 | 17 | 21 | 22 | 31 | 28 | 29 | 10 | 8 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Shimo-sōmi is at