Average annual temperature is 11.5 °C
Absolute maximum temperature: 30.3 °C
Absolute minimum temperature: -11.1 °C
Number of sunny days: 106 days
Number of rainy days: 229 days
Number of snow days: 30 days
Look at detailed online map of Sannō
* Weather data for Sannō 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) | 10.2 | 10.5 | 19.0 | 22.1 | 25.7 | 25.5 | 30.3 | 30.0 | 27.6 | 21.1 | 20.5 | 14.5 |
| Average daytime temperature (°C) | 2.4 | 3.7 | 11.5 | 14.1 | 18.6 | 22.1 | 26.3 | 27.3 | 24.0 | 16.2 | 11.4 | 5.5 |
| Average temperature (°C) | -0.7 | 0.1 | 6.8 | 9.6 | 14.2 | 18.2 | 22.6 | 23.5 | 20.5 | 12.2 | 7.7 | 2.3 |
| Average night temperature (°C) | -3.6 | -2.9 | 3.1 | 6.1 | 10.9 | 15.2 | 19.7 | 20.8 | 18.0 | 9.1 | 4.5 | -0.3 |
| Absolute minimum temperature (°C) | -11.1 | -7.8 | -4.0 | 1.4 | 5.6 | 8.8 | 16.9 | 18.5 | 14.4 | 3.8 | -1.9 | -7.4 |
| 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 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.3 | 5.7 | 7.9 | 7.6 | 8.6 | 7.7 | 9.0 | 9.4 | 8.1 | 8.2 | 6.6 | 5.0 |
| Precipitation (mm) | 135 | 111 | 102 | 230 | 238 | 181 | 248 | 189 | 98 | 29 | 96 | 123 |
| Sunny days | 6 | 8 | 15 | 14 | 13 | 10 | 4 | 2 | 2 | 14 | 11 | 7 |
| Rainy days | 13 | 11 | 14 | 16 | 18 | 20 | 27 | 29 | 28 | 17 | 18 | 18 |
| Snow days | 12 | 9 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 |
The best time to visit Sannō during the most sunny months:
The largest precipitation sum in Sannō is at