Average annual temperature is 15.6 °C
Absolute maximum temperature: 36.8 °C
Absolute minimum temperature: -5.5 °C
Number of sunny days: 161 days
Number of rainy days: 201 days
Number of snow days: 3 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) | 14.5 | 15.1 | 22.1 | 25.8 | 29.2 | 30.2 | 35.2 | 36.8 | 33.2 | 25.3 | 24.8 | 18.6 |
| Average daytime temperature (°C) | 8.1 | 9.8 | 16.5 | 19.1 | 22.9 | 26.0 | 31.2 | 32.3 | 29.5 | 21.4 | 16.6 | 11.4 |
| Average temperature (°C) | 3.4 | 4.8 | 10.9 | 13.9 | 18.0 | 22.0 | 26.5 | 27.5 | 25.1 | 16.0 | 11.6 | 6.4 |
| Average night temperature (°C) | -0.7 | 0.6 | 5.6 | 9.1 | 13.5 | 18.1 | 22.3 | 23.6 | 21.6 | 11.4 | 7.4 | 2.3 |
| Absolute minimum temperature (°C) | -5.5 | -4.5 | -0.6 | 1.8 | 7.5 | 12.0 | 18.1 | 21.8 | 16.3 | 7.2 | -0.5 | -2.3 |
| 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 | 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) | 7.5 | 7.6 | 8.6 | 8.2 | 9.0 | 7.4 | 10.5 | 10.7 | 9.6 | 8.5 | 8.0 | 7.3 |
| Precipitation (mm) | 37 | 61 | 136 | 142 | 259 | 442 | 159 | 194 | 163 | 103 | 91 | 64 |
| Sunny days | 14 | 15 | 18 | 16 | 15 | 9 | 10 | 5 | 7 | 17 | 20 | 15 |
| Rainy days | 14 | 13 | 13 | 14 | 16 | 21 | 21 | 26 | 23 | 14 | 10 | 16 |
| Snow days | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Seto is at