Average annual temperature is 11.6 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: -11.2 °C
Number of sunny days: 83 days
Number of rainy days: 231 days
Number of snow days: 51 days
Look at detailed online map of Iwayashiki
* Weather data for Iwayashiki 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) | 9.4 | 9.1 | 20.3 | 21.3 | 25.6 | 28.7 | 33.1 | 36.3 | 31.1 | 22.1 | 21.8 | 12.9 |
| Average daytime temperature (°C) | 0.2 | 1.4 | 10.7 | 14.3 | 18.9 | 24.0 | 27.8 | 32.1 | 25.9 | 17.6 | 11.2 | 3.5 |
| Average temperature (°C) | -2.4 | -0.8 | 5.0 | 9.6 | 13.6 | 19.4 | 23.9 | 27.3 | 21.6 | 13.0 | 7.7 | 0.6 |
| Average night temperature (°C) | -4.8 | -3.1 | 0.5 | 5.8 | 9.1 | 15.7 | 20.6 | 23.5 | 18.2 | 9.4 | 4.6 | -2.2 |
| Absolute minimum temperature (°C) | -11.2 | -9.1 | -6.2 | -0.7 | 2.0 | 11.0 | 15.8 | 21.9 | 10.5 | 4.6 | -5.4 | -9.8 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| 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) | 4.3 | 5.2 | 7.9 | 8.4 | 9.6 | 8.1 | 9.5 | 11.4 | 7.5 | 7.7 | 4.7 | 3.5 |
| Precipitation (mm) | 104 | 99 | 105 | 164 | 119 | 143 | 230 | 115 | 136 | 148 | 200 | 112 |
| Sunny days | 1 | 2 | 17 | 11 | 10 | 9 | 4 | 8 | 7 | 9 | 4 | 1 |
| Rainy days | 7 | 13 | 14 | 19 | 21 | 21 | 27 | 23 | 23 | 22 | 24 | 17 |
| Snow days | 23 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 13 |
The best time to visit Iwayashiki during the most sunny months:
The largest precipitation sum in Iwayashiki is at