Average annual temperature is 15.5 °C
Absolute maximum temperature: 35.9 °C
Absolute minimum temperature: -12.2 °C
Number of sunny days: 155 days
Number of rainy days: 204 days
Number of snow days: 6 days
Look at detailed online map of Sandachō
* Weather data for Sandachō 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) | 15.5 | 14.8 | 22.4 | 24.0 | 27.0 | 29.9 | 34.2 | 35.9 | 34.4 | 26.7 | 25.0 | 20.2 |
| Average daytime temperature (°C) | 7.9 | 8.8 | 15.6 | 18.2 | 22.1 | 25.4 | 30.5 | 32.6 | 29.9 | 21.5 | 16.3 | 11.1 |
| Average temperature (°C) | 3.4 | 4.5 | 10.3 | 13.4 | 17.4 | 21.5 | 26.3 | 27.8 | 25.5 | 16.7 | 11.8 | 6.8 |
| Average night temperature (°C) | -0.4 | 1.0 | 6.1 | 9.7 | 13.8 | 18.2 | 23.1 | 24.5 | 22.3 | 13.0 | 8.4 | 3.3 |
| Absolute minimum temperature (°C) | -12.2 | -3.0 | -0.9 | 4.0 | 7.5 | 13.3 | 19.7 | 22.9 | 18.4 | 8.5 | 1.5 | -3.8 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.7 | 6.6 | 8.4 | 7.7 | 8.9 | 6.9 | 9.6 | 10.1 | 9.6 | 8.9 | 7.6 | 6.9 |
| Precipitation (mm) | 42 | 34 | 100 | 177 | 249 | 298 | 102 | 198 | 88 | 36 | 114 | 38 |
| Sunny days | 13 | 12 | 16 | 16 | 14 | 8 | 9 | 1 | 9 | 17 | 21 | 19 |
| Rainy days | 14 | 14 | 15 | 14 | 17 | 22 | 22 | 30 | 21 | 14 | 9 | 12 |
| Snow days | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sandachō is at