Average annual temperature is 13.1 °C
Absolute maximum temperature: 31.1 °C
Absolute minimum temperature: -14.6 °C
Number of sunny days: 141 days
Number of rainy days: 220 days
Number of snow days: 4 days
Look at detailed online map of Iwayado
* Weather data for Iwayado 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) | 17.7 | 14.6 | 19.8 | 22.6 | 26.9 | 27.4 | 30.0 | 31.1 | 29.1 | 24.3 | 22.4 | 16.5 |
| Average daytime temperature (°C) | 7.3 | 9.8 | 14.4 | 16.7 | 20.4 | 23.4 | 27.0 | 26.0 | 26.0 | 19.4 | 15.0 | 9.5 |
| Average temperature (°C) | 1.8 | 4.5 | 9.1 | 11.7 | 15.7 | 19.1 | 23.0 | 22.6 | 21.5 | 13.6 | 9.4 | 4.5 |
| Average night temperature (°C) | -2.7 | 0.6 | 4.9 | 7.4 | 11.8 | 15.8 | 20.2 | 20.2 | 18.2 | 9.0 | 5.2 | 0.6 |
| Absolute minimum temperature (°C) | -14.6 | -5.4 | -4.8 | -2.7 | 6.2 | 10.4 | 16.2 | 17.9 | 14.5 | 2.4 | -3.1 | -8.5 |
| 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 | 13.8 | 14.2 | 14.0 | 13.3 | 12.4 | 11.4 | 10.5 | 10.1 |
| 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 | 10.0 |
| Sunshine mean duration (h) | 7.3 | 6.8 | 7.3 | 7.7 | 8.0 | 6.1 | 9.1 | 7.2 | 8.9 | 8.2 | 8.3 | 6.3 |
| Precipitation (mm) | 73 | 146 | 167 | 227 | 207 | 433 | 151 | 719 | 95 | 80 | 39 | 88 |
| Sunny days | 19 | 17 | 15 | 14 | 10 | 6 | 3 | 0 | 2 | 19 | 22 | 14 |
| Rainy days | 10 | 11 | 16 | 16 | 21 | 24 | 28 | 31 | 28 | 12 | 8 | 15 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The largest precipitation sum in Iwayado is at