Average annual temperature is 17.6 °C
Absolute maximum temperature: 35.9 °C
Absolute minimum temperature: -2.5 °C
Number of sunny days: 141 days
Number of rainy days: 222 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) | 18.8 | 16.5 | 23.3 | 24.5 | 25.9 | 29.5 | 32.7 | 35.9 | 32.3 | 26.8 | 25.8 | 21.4 |
| Average daytime temperature (°C) | 10.2 | 11.9 | 16.4 | 19.3 | 22.3 | 25.7 | 29.2 | 31.4 | 28.9 | 22.5 | 17.4 | 12.6 |
| Average temperature (°C) | 7.6 | 8.8 | 12.5 | 15.7 | 18.9 | 22.7 | 26.7 | 28.1 | 25.8 | 19.0 | 14.5 | 9.9 |
| Average night temperature (°C) | 5.2 | 6.1 | 9.5 | 12.5 | 16.3 | 20.3 | 24.9 | 25.7 | 23.6 | 16.3 | 11.9 | 7.3 |
| Absolute minimum temperature (°C) | -2.5 | 2.4 | 2.7 | 8.1 | 10.8 | 16.6 | 22.5 | 23.8 | 20.8 | 11.7 | 6.5 | 1.6 |
| 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) | 10.3 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.3 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 10.0 | 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) | 5.9 | 6.3 | 7.5 | 8.0 | 8.0 | 7.2 | 8.4 | 10.9 | 9.2 | 9.0 | 7.2 | 5.4 |
| Precipitation (mm) | 110 | 104 | 142 | 222 | 320 | 319 | 285 | 245 | 161 | 53 | 95 | 79 |
| Sunny days | 14 | 13 | 16 | 16 | 15 | 6 | 3 | 4 | 8 | 20 | 17 | 9 |
| Rainy days | 15 | 15 | 15 | 14 | 16 | 24 | 28 | 27 | 22 | 11 | 13 | 22 |
| Snow days | 2 | 0 | 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