Average annual temperature is 10.2 °C
Absolute maximum temperature: 32.2 °C
Absolute minimum temperature: -13.3 °C
Number of sunny days: 85 days
Number of rainy days: 213 days
Number of snow days: 67 days
Look at detailed online map of Ishiwatari
* Weather data for Ishiwatari 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) | 7.5 | 7.2 | 18.1 | 20.5 | 24.5 | 27.3 | 31.3 | 32.2 | 29.5 | 21.8 | 19.9 | 11.5 |
| Average daytime temperature (°C) | -1.5 | -0.2 | 8.7 | 12.8 | 17.2 | 21.7 | 25.9 | 28.9 | 24.0 | 16.1 | 9.9 | 2.1 |
| Average temperature (°C) | -3.8 | -2.3 | 3.9 | 8.4 | 12.4 | 17.8 | 22.4 | 25.2 | 20.2 | 12.0 | 6.4 | -0.8 |
| Average night temperature (°C) | -6.1 | -4.7 | 0.0 | 5.1 | 8.7 | 15.0 | 19.5 | 22.4 | 17.2 | 8.8 | 3.5 | -3.7 |
| Absolute minimum temperature (°C) | -13.3 | -9.8 | -6.6 | -0.3 | 1.0 | 9.9 | 14.6 | 19.6 | 10.2 | 1.8 | -5.6 | -10.2 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.8 | 12.5 | 11.1 | 9.9 | 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) | 3.7 | 5.1 | 8.2 | 8.4 | 8.5 | 7.2 | 8.6 | 10.1 | 7.0 | 7.5 | 4.5 | 4.0 |
| Precipitation (mm) | 124 | 91 | 71 | 121 | 134 | 139 | 252 | 285 | 189 | 110 | 154 | 112 |
| Sunny days | 3 | 2 | 17 | 10 | 12 | 8 | 6 | 3 | 3 | 10 | 8 | 3 |
| Rainy days | 5 | 5 | 11 | 20 | 19 | 22 | 25 | 28 | 27 | 21 | 19 | 11 |
| Snow days | 23 | 21 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 17 |
The best time to visit Ishiwatari during the most sunny months:
The largest precipitation sum in Ishiwatari is at