Average annual temperature is 12.2 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -9.6 °C
Number of sunny days: 118 days
Number of rainy days: 226 days
Number of snow days: 21 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) | 11.6 | 12.3 | 19.4 | 22.8 | 29.2 | 27.2 | 33.5 | 34.2 | 31.8 | 23.6 | 21.9 | 14.6 |
| Average daytime temperature (°C) | 3.3 | 4.6 | 12.0 | 15.8 | 19.3 | 23.3 | 28.5 | 30.8 | 26.3 | 17.7 | 12.8 | 7.5 |
| Average temperature (°C) | -0.7 | 0.4 | 6.6 | 10.2 | 14.0 | 18.9 | 23.9 | 25.5 | 22.1 | 13.0 | 8.3 | 3.2 |
| Average night temperature (°C) | -3.4 | -2.6 | 2.6 | 6.0 | 9.6 | 15.7 | 20.1 | 21.9 | 19.1 | 9.4 | 5.0 | 0.3 |
| Absolute minimum temperature (°C) | -9.6 | -5.8 | -3.9 | -0.2 | 1.7 | 9.9 | 16.5 | 19.9 | 11.1 | 5.6 | -1.3 | -6.2 |
| 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 | 9.6 |
| 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) | 6.8 | 7.9 | 8.0 | 9.0 | 8.7 | 7.8 | 10.1 | 11.3 | 7.7 | 8.8 | 7.0 | 6.8 |
| Precipitation (mm) | 31 | 42 | 92 | 81 | 135 | 245 | 89 | 96 | 191 | 78 | 120 | 40 |
| Sunny days | 10 | 13 | 11 | 15 | 12 | 6 | 6 | 3 | 5 | 12 | 14 | 11 |
| Rainy days | 9 | 10 | 19 | 15 | 19 | 24 | 25 | 28 | 25 | 19 | 16 | 17 |
| Snow days | 12 | 5 | 1 | 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