Average annual temperature is 17.2 °C
Absolute maximum temperature: 34.8 °C
Absolute minimum temperature: -3.2 °C
Number of sunny days: 166 days
Number of rainy days: 197 days
Number of snow days: 2 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) | 15.1 | 17.4 | 22.4 | 22.7 | 26.7 | 29.2 | 34.8 | 33.2 | 32.5 | 29.8 | 24.9 | 22.4 |
| Average daytime temperature (°C) | 9.1 | 10.9 | 15.6 | 18.8 | 21.1 | 25.1 | 30.4 | 31.2 | 29.1 | 22.2 | 18.2 | 13.3 |
| Average temperature (°C) | 5.7 | 7.3 | 12.3 | 15.8 | 18.2 | 22.4 | 27.0 | 28.0 | 26.2 | 18.6 | 14.6 | 9.4 |
| Average night temperature (°C) | 2.6 | 4.1 | 9.1 | 12.8 | 15.5 | 20.0 | 24.4 | 25.8 | 23.9 | 15.2 | 11.3 | 5.8 |
| Absolute minimum temperature (°C) | -3.2 | 0.5 | 4.0 | 7.8 | 10.2 | 15.8 | 21.8 | 24.1 | 18.1 | 11.6 | 5.1 | 0.0 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 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) | 7.0 | 7.2 | 7.7 | 8.9 | 8.6 | 7.6 | 10.7 | 11.4 | 9.4 | 8.8 | 7.6 | 7.8 |
| Precipitation (mm) | 30 | 56 | 154 | 134 | 164 | 290 | 59 | 179 | 171 | 165 | 82 | 49 |
| Sunny days | 15 | 14 | 15 | 13 | 14 | 7 | 17 | 9 | 9 | 15 | 16 | 22 |
| Rainy days | 16 | 12 | 16 | 17 | 17 | 23 | 14 | 22 | 21 | 16 | 14 | 9 |
| Snow days | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Seto during the most sunny months:
The largest precipitation sum in Seto is at