Average annual temperature is 16.6 °C
Absolute maximum temperature: 34.5 °C
Absolute minimum temperature: -6.1 °C
Number of sunny days: 157 days
Number of rainy days: 208 days
Look at detailed online map of Sanmyō
* Weather data for Sanmyō 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) | 20.1 | 20.6 | 24.8 | 26.0 | 32.5 | 32.1 | 33.3 | 34.5 | 33.4 | 26.6 | 27.6 | 22.9 |
| Average daytime temperature (°C) | 12.3 | 13.5 | 17.7 | 20.4 | 23.3 | 26.1 | 30.8 | 29.6 | 29.7 | 23.5 | 19.6 | 14.1 |
| Average temperature (°C) | 6.0 | 8.2 | 12.4 | 15.6 | 18.9 | 22.2 | 26.8 | 26.0 | 25.1 | 17.1 | 12.8 | 7.7 |
| Average night temperature (°C) | 1.2 | 3.3 | 7.5 | 11.1 | 14.7 | 19.0 | 23.5 | 23.2 | 21.4 | 11.7 | 7.7 | 2.8 |
| Absolute minimum temperature (°C) | -6.1 | -3.5 | -1.6 | 1.6 | 8.4 | 13.9 | 21.0 | 21.6 | 19.3 | 5.0 | -0.4 | -5.9 |
| 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) | 7.5 | 6.9 | 7.6 | 7.9 | 8.9 | 6.4 | 10.1 | 8.4 | 10.1 | 8.5 | 8.8 | 7.4 |
| Precipitation (mm) | 68 | 148 | 162 | 168 | 147 | 509 | 238 | 586 | 100 | 55 | 29 | 82 |
| Sunny days | 22 | 18 | 17 | 12 | 11 | 8 | 1 | 3 | 4 | 21 | 20 | 20 |
| Rainy days | 9 | 10 | 14 | 18 | 20 | 22 | 30 | 28 | 26 | 10 | 10 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sanmyō is at