Average annual temperature is 16.2 °C
Absolute maximum temperature: 40.1 °C
Absolute minimum temperature: -5.3 °C
Number of sunny days: 162 days
Number of rainy days: 198 days
Number of snow days: 5 days
Look at detailed online map of Shiroishi
* Weather data for Shiroishi 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) | 13.8 | 17.7 | 23.3 | 29.3 | 32.5 | 31.7 | 40.1 | 38.8 | 34.2 | 26.3 | 27.3 | 19.8 |
| Average daytime temperature (°C) | 9.1 | 10.9 | 17.5 | 21.6 | 23.9 | 26.8 | 33.7 | 33.6 | 30.1 | 22.4 | 17.7 | 12.5 |
| Average temperature (°C) | 3.6 | 5.3 | 11.7 | 15.1 | 18.2 | 22.4 | 28.0 | 28.3 | 25.6 | 17.1 | 11.9 | 6.8 |
| Average night temperature (°C) | -0.4 | 0.9 | 6.3 | 9.4 | 13.2 | 18.8 | 23.3 | 24.5 | 22.4 | 12.6 | 7.5 | 2.4 |
| Absolute minimum temperature (°C) | -5.3 | -2.8 | -0.1 | 4.0 | 5.6 | 13.0 | 20.6 | 22.5 | 14.7 | 7.5 | 1.5 | -3.2 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 8.2 | 8.3 | 9.1 | 9.2 | 7.8 | 9.9 | 10.5 | 8.7 | 8.7 | 8.0 | 7.9 |
| Precipitation (mm) | 15 | 42 | 103 | 52 | 172 | 309 | 123 | 139 | 176 | 97 | 68 | 23 |
| Sunny days | 20 | 18 | 16 | 16 | 15 | 3 | 8 | 2 | 4 | 17 | 20 | 23 |
| Rainy days | 7 | 9 | 15 | 14 | 16 | 27 | 23 | 29 | 26 | 14 | 10 | 8 |
| Snow days | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Shiroishi is at