Average annual temperature is 14.0 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -7.6 °C
Number of sunny days: 133 days
Number of rainy days: 218 days
Number of snow days: 14 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) | 11.9 | 13.5 | 18.8 | 21.7 | 27.9 | 27.6 | 33.1 | 34.6 | 30.3 | 24.3 | 22.3 | 14.9 |
| Average daytime temperature (°C) | 5.2 | 6.3 | 12.5 | 16.2 | 19.0 | 23.7 | 28.4 | 30.4 | 26.9 | 20.0 | 14.6 | 8.7 |
| Average temperature (°C) | 1.7 | 2.2 | 7.9 | 11.8 | 15.1 | 20.4 | 25.0 | 27.8 | 24.1 | 15.7 | 10.8 | 5.0 |
| Average night temperature (°C) | -1.0 | -0.8 | 3.9 | 8.2 | 11.7 | 17.7 | 22.2 | 25.8 | 21.8 | 12.4 | 7.6 | 1.9 |
| Absolute minimum temperature (°C) | -7.6 | -4.6 | -2.3 | 2.5 | 4.5 | 13.0 | 17.2 | 23.7 | 15.5 | 6.1 | 0.9 | -2.8 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 7.0 | 7.6 | 8.8 | 9.2 | 8.6 | 8.0 | 10.2 | 11.8 | 8.1 | 8.6 | 7.2 | 7.0 |
| Precipitation (mm) | 19 | 50 | 101 | 83 | 122 | 180 | 119 | 57 | 242 | 55 | 71 | 66 |
| Sunny days | 10 | 15 | 15 | 16 | 11 | 4 | 9 | 8 | 4 | 15 | 13 | 13 |
| Rainy days | 12 | 9 | 16 | 14 | 20 | 26 | 22 | 23 | 26 | 16 | 17 | 17 |
| Snow days | 9 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Seto during the most sunny months:
The largest precipitation sum in Seto is at