Average annual temperature is 13.9 °C
Absolute maximum temperature: 36.1 °C
Absolute minimum temperature: -7.2 °C
Number of sunny days: 129 days
Number of rainy days: 225 days
Number of snow days: 11 days
Look at detailed online map of Seto
* Weather data for Seto 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) | 14.0 | 14.0 | 22.5 | 27.0 | 30.3 | 30.4 | 35.3 | 36.1 | 33.1 | 25.5 | 23.1 | 19.2 |
| Average daytime temperature (°C) | 7.3 | 8.5 | 15.6 | 18.0 | 22.4 | 25.7 | 30.7 | 31.4 | 28.9 | 20.6 | 15.4 | 10.0 |
| Average temperature (°C) | 1.7 | 3.1 | 9.2 | 12.1 | 16.5 | 20.6 | 25.0 | 25.5 | 23.5 | 14.6 | 9.9 | 4.8 |
| Average night temperature (°C) | -2.1 | -1.0 | 3.9 | 6.9 | 11.6 | 16.3 | 20.4 | 21.4 | 19.8 | 10.4 | 6.0 | 1.2 |
| Absolute minimum temperature (°C) | -7.2 | -4.6 | -3.1 | 0.1 | 4.5 | 10.7 | 17.2 | 19.1 | 14.0 | 5.6 | -2.1 | -4.0 |
| 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) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.5 | 14.3 | 13.5 | 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) | 6.9 | 7.2 | 8.6 | 8.0 | 8.9 | 7.8 | 9.6 | 10.0 | 9.4 | 8.6 | 7.6 | 6.5 |
| Precipitation (mm) | 50 | 73 | 169 | 319 | 312 | 447 | 292 | 197 | 210 | 90 | 148 | 115 |
| Sunny days | 14 | 13 | 14 | 12 | 10 | 8 | 6 | 5 | 8 | 16 | 13 | 10 |
| Rainy days | 9 | 15 | 17 | 18 | 21 | 22 | 25 | 26 | 22 | 15 | 17 | 18 |
| Snow days | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The largest precipitation sum in Seto is at