Average annual temperature is 13.5 °C
Absolute maximum temperature: 34.9 °C
Absolute minimum temperature: -7.5 °C
Number of sunny days: 123 days
Number of rainy days: 227 days
Number of snow days: 15 days
Look at detailed online map of Iitoyo
* Weather data for Iitoyo 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) | 12.8 | 14.4 | 19.9 | 23.8 | 29.6 | 29.7 | 34.0 | 34.9 | 32.8 | 25.5 | 22.7 | 17.5 |
| Average daytime temperature (°C) | 5.6 | 6.7 | 13.9 | 17.6 | 20.8 | 24.7 | 30.0 | 31.9 | 27.6 | 19.5 | 14.4 | 9.5 |
| Average temperature (°C) | 1.0 | 2.0 | 7.7 | 11.6 | 15.1 | 20.0 | 25.0 | 26.8 | 23.4 | 14.3 | 9.2 | 4.7 |
| Average night temperature (°C) | -2.7 | -1.6 | 2.6 | 6.5 | 9.7 | 16.1 | 20.6 | 23.0 | 20.2 | 10.0 | 5.3 | 1.1 |
| Absolute minimum temperature (°C) | -7.5 | -5.8 | -5.4 | -1.6 | 2.3 | 10.1 | 16.4 | 20.5 | 11.7 | 4.7 | 0.1 | -4.2 |
| 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) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 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) | 6.1 | 7.7 | 8.1 | 8.8 | 8.6 | 7.8 | 9.9 | 11.1 | 7.7 | 8.7 | 6.6 | 6.2 |
| Precipitation (mm) | 37 | 51 | 105 | 81 | 142 | 250 | 80 | 82 | 227 | 84 | 126 | 60 |
| Sunny days | 8 | 12 | 12 | 17 | 17 | 7 | 7 | 4 | 4 | 13 | 13 | 9 |
| Rainy days | 15 | 12 | 19 | 13 | 14 | 23 | 24 | 27 | 26 | 18 | 17 | 19 |
| Snow days | 8 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The best time to visit Iitoyo during the most sunny months:
The largest precipitation sum in Iitoyo is at