Average annual temperature is 12.1 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: -13.6 °C
Number of sunny days: 106 days
Number of rainy days: 216 days
Number of snow days: 43 days
Look at detailed online map of Tonai
* Weather data for Tonai 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) | 12.1 | 11.0 | 19.9 | 23.1 | 28.3 | 29.9 | 33.4 | 35.6 | 33.2 | 23.3 | 23.6 | 15.2 |
| Average daytime temperature (°C) | 1.8 | 2.3 | 12.3 | 15.6 | 19.6 | 24.4 | 28.5 | 31.9 | 26.7 | 18.7 | 12.3 | 4.8 |
| Average temperature (°C) | -1.7 | -1.1 | 6.2 | 10.4 | 14.3 | 19.7 | 24.3 | 27.1 | 22.1 | 13.6 | 8.4 | 1.1 |
| Average night temperature (°C) | -4.7 | -4.7 | 1.7 | 6.6 | 10.2 | 16.2 | 21.2 | 23.7 | 18.8 | 9.9 | 5.2 | -2.5 |
| Absolute minimum temperature (°C) | -13.6 | -11.4 | -3.8 | 0.1 | 2.3 | 10.8 | 16.7 | 21.5 | 11.1 | 4.6 | -7.4 | -11.9 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 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) | 6.3 | 6.5 | 8.3 | 8.9 | 8.9 | 7.9 | 9.2 | 10.3 | 7.4 | 8.4 | 5.9 | 5.1 |
| Precipitation (mm) | 49 | 55 | 74 | 91 | 107 | 146 | 164 | 84 | 166 | 85 | 118 | 88 |
| Sunny days | 11 | 4 | 19 | 12 | 9 | 7 | 8 | 8 | 2 | 9 | 8 | 9 |
| Rainy days | 6 | 10 | 12 | 18 | 22 | 23 | 23 | 23 | 28 | 22 | 19 | 10 |
| Snow days | 14 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 12 |
The best time to visit Tonai during the most sunny months:
The largest precipitation sum in Tonai is at