Average annual temperature is 17.0 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -2.3 °C
Number of sunny days: 164 days
Number of rainy days: 200 days
Number of snow days: 1 day
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) | 14.7 | 16.9 | 20.5 | 23.2 | 24.8 | 27.9 | 32.6 | 34.6 | 31.9 | 27.7 | 24.3 | 21.5 |
| Average daytime temperature (°C) | 9.6 | 9.9 | 14.6 | 17.3 | 21.0 | 24.2 | 29.1 | 31.3 | 29.4 | 22.8 | 17.8 | 12.1 |
| Average temperature (°C) | 7.2 | 7.1 | 11.5 | 14.3 | 18.3 | 21.7 | 26.1 | 28.2 | 26.4 | 19.1 | 14.5 | 8.9 |
| Average night temperature (°C) | 5.1 | 4.2 | 8.4 | 11.5 | 15.8 | 19.6 | 23.7 | 25.7 | 23.7 | 15.6 | 11.4 | 5.6 |
| Absolute minimum temperature (°C) | -2.3 | 0.7 | 2.0 | 7.9 | 9.9 | 15.1 | 19.9 | 23.6 | 20.8 | 10.6 | 5.1 | 0.3 |
| 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 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| 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) | 7.1 | 7.3 | 8.7 | 8.0 | 8.9 | 7.6 | 9.8 | 10.2 | 9.3 | 8.4 | 8.0 | 7.2 |
| Precipitation (mm) | 50 | 41 | 101 | 207 | 219 | 226 | 92 | 198 | 63 | 23 | 51 | 43 |
| Sunny days | 13 | 13 | 19 | 16 | 17 | 12 | 13 | 3 | 8 | 19 | 15 | 16 |
| Rainy days | 17 | 15 | 12 | 14 | 14 | 18 | 18 | 28 | 22 | 12 | 15 | 15 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Seto is at