Average annual temperature is 16.7 °C
Absolute maximum temperature: 30.6 °C
Absolute minimum temperature: -1.4 °C
Number of sunny days: 168 days
Number of rainy days: 194 days
Number of snow days: 3 days
Look at detailed online map of Saiwaishinden
* Weather data for Saiwaishinden 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) | 13.5 | 15.7 | 17.4 | 20.9 | 23.2 | 25.5 | 29.4 | 30.5 | 30.6 | 26.2 | 23.3 | 20.6 |
| Average daytime temperature (°C) | 9.1 | 9.1 | 13.0 | 15.9 | 19.4 | 22.5 | 26.8 | 28.6 | 27.8 | 22.1 | 17.1 | 11.8 |
| Average temperature (°C) | 7.4 | 7.2 | 11.0 | 13.7 | 17.3 | 20.8 | 24.8 | 27.0 | 26.0 | 19.7 | 15.2 | 10.0 |
| Average night temperature (°C) | 5.6 | 4.9 | 9.0 | 11.9 | 15.8 | 19.5 | 23.4 | 25.6 | 24.3 | 17.6 | 13.1 | 8.1 |
| Absolute minimum temperature (°C) | -1.4 | 1.2 | 4.1 | 9.9 | 11.8 | 16.7 | 20.7 | 24.3 | 22.4 | 14.0 | 7.7 | 2.9 |
| 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) | 7.0 | 7.3 | 8.6 | 7.9 | 8.9 | 7.4 | 9.8 | 10.1 | 9.2 | 8.4 | 8.0 | 7.2 |
| Precipitation (mm) | 62 | 44 | 109 | 205 | 200 | 219 | 80 | 125 | 42 | 23 | 78 | 62 |
| Sunny days | 12 | 14 | 19 | 17 | 18 | 12 | 14 | 11 | 11 | 17 | 13 | 10 |
| Rainy days | 17 | 14 | 12 | 13 | 13 | 18 | 17 | 20 | 19 | 14 | 17 | 20 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Saiwaishinden is at