Average annual temperature is 14.0 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -7.0 °C
Number of sunny days: 132 days
Number of rainy days: 221 days
Number of snow days: 12 days
Look at detailed online map of Iōno
* Weather data for Iōno 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) | 13.6 | 14.1 | 20.7 | 27.6 | 29.8 | 31.3 | 35.2 | 34.9 | 32.4 | 24.7 | 22.4 | 17.3 |
| Average daytime temperature (°C) | 6.4 | 8.0 | 14.7 | 18.5 | 21.6 | 25.4 | 30.8 | 31.6 | 27.9 | 20.2 | 15.1 | 10.1 |
| Average temperature (°C) | 1.8 | 2.8 | 8.8 | 12.3 | 15.7 | 20.7 | 25.5 | 26.4 | 23.6 | 14.8 | 10.1 | 4.9 |
| Average night temperature (°C) | -1.7 | -1.1 | 4.1 | 7.3 | 10.7 | 17.0 | 21.2 | 23.0 | 20.4 | 10.5 | 6.3 | 1.3 |
| Absolute minimum temperature (°C) | -7.0 | -4.9 | -2.2 | 1.2 | 4.2 | 12.5 | 18.7 | 21.1 | 13.9 | 6.2 | -0.9 | -3.7 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.7 | 14.4 | 13.5 | 12.4 | 11.2 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.0 | 8.1 | 7.8 | 8.9 | 8.9 | 7.6 | 9.9 | 10.5 | 7.6 | 8.5 | 6.9 | 7.1 |
| Precipitation (mm) | 20 | 39 | 113 | 93 | 148 | 296 | 104 | 124 | 189 | 116 | 113 | 41 |
| Sunny days | 19 | 18 | 15 | 15 | 11 | 5 | 6 | 0 | 2 | 14 | 15 | 12 |
| Rainy days | 5 | 9 | 16 | 15 | 20 | 25 | 25 | 31 | 28 | 17 | 15 | 15 |
| Snow days | 7 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
The best time to visit Iōno during the most sunny months:
The largest precipitation sum in Iōno is at