Average annual temperature is 16.0 °C
Absolute maximum temperature: 38.6 °C
Absolute minimum temperature: -6.3 °C
Number of sunny days: 156 days
Number of rainy days: 204 days
Number of snow days: 5 days
Look at detailed online map of Iwase
* Weather data for Iwase 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) | 12.9 | 16.8 | 22.8 | 28.2 | 32.2 | 32.2 | 38.6 | 37.5 | 35.9 | 27.4 | 24.9 | 18.8 |
| Average daytime temperature (°C) | 8.2 | 10.2 | 16.8 | 20.3 | 23.1 | 26.7 | 32.7 | 33.6 | 29.9 | 21.9 | 17.4 | 12.5 |
| Average temperature (°C) | 3.2 | 4.9 | 11.3 | 14.6 | 17.7 | 22.1 | 27.3 | 28.3 | 25.5 | 17.0 | 12.4 | 7.0 |
| Average night temperature (°C) | -0.7 | 0.6 | 7.0 | 10.0 | 13.2 | 18.6 | 23.2 | 24.7 | 22.4 | 13.1 | 8.5 | 3.0 |
| Absolute minimum temperature (°C) | -6.3 | -3.5 | 1.5 | 3.7 | 7.3 | 13.3 | 19.8 | 23.6 | 15.7 | 8.9 | 2.9 | -3.0 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.3 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.5 | 7.9 | 8.0 | 9.1 | 9.3 | 7.6 | 10.2 | 11.0 | 8.5 | 8.1 | 7.4 | 7.5 |
| Precipitation (mm) | 26 | 32 | 118 | 86 | 175 | 332 | 85 | 128 | 227 | 119 | 74 | 31 |
| Sunny days | 19 | 17 | 17 | 15 | 13 | 7 | 7 | 4 | 4 | 14 | 17 | 22 |
| Rainy days | 9 | 9 | 14 | 15 | 18 | 23 | 24 | 27 | 26 | 17 | 13 | 9 |
| Snow days | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Iwase during the most sunny months:
The largest precipitation sum in Iwase is at