Average annual temperature is 13.3 °C
Absolute maximum temperature: 30.7 °C
Absolute minimum temperature: -11.7 °C
Number of sunny days: 114 days
Number of rainy days: 229 days
Number of snow days: 22 days
Look at detailed online map of Tosa-chō
* Weather data for Tosa-chō 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) | 17.8 | 13.7 | 19.4 | 23.0 | 26.9 | 29.3 | 30.5 | 30.7 | 29.0 | 25.0 | 23.3 | 16.9 |
| Average daytime temperature (°C) | 5.7 | 6.9 | 13.8 | 16.6 | 20.1 | 23.8 | 27.7 | 26.9 | 26.1 | 18.9 | 14.4 | 9.0 |
| Average temperature (°C) | 1.3 | 2.7 | 8.9 | 11.9 | 15.8 | 19.9 | 23.7 | 23.8 | 22.2 | 14.3 | 10.0 | 4.7 |
| Average night temperature (°C) | -2.2 | -0.9 | 5.1 | 8.0 | 12.4 | 16.9 | 20.8 | 21.6 | 19.6 | 10.8 | 6.3 | 1.3 |
| Absolute minimum temperature (°C) | -11.7 | -7.4 | -2.6 | 4.3 | 7.4 | 13.5 | 17.9 | 19.8 | 15.4 | 6.4 | 0.7 | -7.3 |
| 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) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.1 | 13.4 | 12.4 | 11.3 | 10.4 | 10.0 |
| 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) | 7.2 | 7.0 | 8.0 | 7.9 | 8.4 | 6.1 | 9.6 | 8.0 | 9.1 | 8.7 | 7.6 | 7.1 |
| Precipitation (mm) | 102 | 75 | 176 | 436 | 350 | 431 | 179 | 641 | 119 | 49 | 113 | 89 |
| Sunny days | 9 | 9 | 15 | 15 | 10 | 8 | 1 | 1 | 4 | 14 | 13 | 15 |
| Rainy days | 10 | 14 | 15 | 15 | 21 | 22 | 30 | 30 | 26 | 17 | 16 | 13 |
| Snow days | 12 | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
The largest precipitation sum in Tosa-chō is at