Average annual temperature is 17 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: -2.9 °C
Number of sunny days: 146
Number of rainy days: 215
Number of snow days: 4
Average annual precipitation: 1708 mm
Look at detailed online map of Iyo
* Weather data for Iyo Japan is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | Maggio | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 18.8 | 17.5 | 24.1 | 25.4 | 29.3 | 32.4 | 34.3 | 35.6 | 34.3 | 27 | 27 | 23.1 |
| Average daytime temperature (°C) | 10.1 | 11.3 | 16.9 | 19.4 | 23.3 | 26.1 | 31.1 | 31.9 | 30.2 | 23 | 18.2 | 12.6 |
| Average temperature (°C) | 6.6 | 7.1 | 11.9 | 15 | 19 | 22.6 | 27.1 | 27.9 | 26 | 18.1 | 13.5 | 8.7 |
| Average night temperature (°C) | 3.5 | 3 | 7.1 | 10.5 | 14.9 | 19.3 | 23.4 | 24.8 | 22.5 | 14.1 | 9.3 | 4.9 |
| Absolute minimum temperature (°C) | -2.9 | -1 | 1.2 | 5.3 | 7.8 | 13.9 | 17.2 | 22.1 | 19.8 | 9.8 | 3.5 | -0.8 |
| Jan | Feb | Mar | Apr | Maggio | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.5 | 11.4 | 12.5 | 13.5 | 14.2 | 14.4 | 14.4 | 13.8 | 12.9 | 11.9 | 10.8 | 10.1 |
| Daylight mean duration (h) | 10.2 | 11 | 12 | 13 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 10 |
| Daylight minimum duration (h) | 10 | 10.6 | 11.5 | 12.6 | 13.5 | 14.3 | 13.9 | 12.9 | 11.9 | 10.9 | 10.1 | 9.9 |
| Sunshine mean duration (h) | 6.9 | 7.2 | 8.6 | 8.8 | 9.2 | 7 | 9.8 | 10.1 | 9.4 | 9.1 | 8 | 7.2 |
| Precipitation (mm) | 91 | 63 | 101 | 240 | 245 | 287 | 155 | 206 | 96 | 29 | 121 | 75 |
| Sunny days | 12 | 12 | 18 | 19 | 16 | 11 | 8 | 1 | 6 | 18 | 13 | 12 |
| Rainy days | 17 | 16 | 13 | 11 | 15 | 19 | 23 | 30 | 24 | 13 | 17 | 17 |
| Snow days | 2 | 2 |
The largest precipitation sum in Iyo is at