Average annual temperature is 13.9 °C
Absolute maximum temperature: 34.8 °C
Absolute minimum temperature: -8.5 °C
Number of sunny days: 99 days
Number of rainy days: 250 days
Number of snow days: 16 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) | 14.8 | 13.0 | 19.8 | 24.0 | 28.8 | 29.9 | 33.4 | 34.8 | 33.7 | 23.5 | 24.5 | 19.1 |
| Average daytime temperature (°C) | 5.0 | 5.1 | 13.1 | 16.4 | 20.6 | 24.4 | 29.2 | 32.1 | 28.5 | 18.9 | 14.5 | 8.9 |
| Average temperature (°C) | 1.9 | 1.8 | 8.1 | 11.7 | 15.9 | 20.4 | 25.2 | 27.4 | 23.9 | 14.5 | 10.5 | 5.3 |
| Average night temperature (°C) | -1.1 | -1.9 | 3.4 | 7.6 | 11.6 | 16.9 | 21.5 | 23.3 | 20.4 | 11.0 | 6.8 | 2.2 |
| Absolute minimum temperature (°C) | -8.4 | -8.5 | -2.1 | 1.2 | 5.0 | 12.1 | 17.7 | 19.4 | 15.8 | 7.1 | -1.1 | -3.0 |
| 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 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.3 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.1 | 5.7 | 7.8 | 8.0 | 9.3 | 7.8 | 9.7 | 10.7 | 8.7 | 8.3 | 6.0 | 4.8 |
| Precipitation (mm) | 194 | 166 | 167 | 234 | 263 | 320 | 249 | 83 | 188 | 191 | 239 | 240 |
| Sunny days | 2 | 9 | 16 | 11 | 14 | 7 | 7 | 6 | 7 | 10 | 6 | 4 |
| Rainy days | 21 | 14 | 15 | 19 | 17 | 23 | 24 | 25 | 23 | 21 | 24 | 24 |
| Snow days | 8 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The best time to visit Seto during the most sunny months:
The largest precipitation sum in Seto is at