Average annual temperature is 11.4 °C
Absolute maximum temperature: 34.7 °C
Absolute minimum temperature: -14.0 °C
Number of sunny days: 104 days
Number of rainy days: 212 days
Number of snow days: 49 days
Look at detailed online map of Iwadate
* Weather data for Iwadate 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) | 10.5 | 9.1 | 19.7 | 22.8 | 28.6 | 29.3 | 33.3 | 34.7 | 33.4 | 23.9 | 22.3 | 13.5 |
| Average daytime temperature (°C) | 1.1 | 1.5 | 11.8 | 15.2 | 19.1 | 24.0 | 28.1 | 31.6 | 26.0 | 18.0 | 11.6 | 4.1 |
| Average temperature (°C) | -2.6 | -2.1 | 5.4 | 9.6 | 13.6 | 19.2 | 23.7 | 26.6 | 21.5 | 12.9 | 7.6 | 0.5 |
| Average night temperature (°C) | -5.6 | -5.5 | 0.7 | 5.6 | 9.4 | 15.8 | 20.2 | 23.3 | 18.2 | 9.2 | 4.4 | -2.7 |
| Absolute minimum temperature (°C) | -14.0 | -10.7 | -7.6 | -1.0 | 1.9 | 10.0 | 14.9 | 20.4 | 10.2 | 3.1 | -7.0 | -9.7 |
| 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 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.4 |
| 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) | 6.2 | 6.6 | 8.6 | 9.1 | 8.9 | 8.4 | 9.8 | 10.7 | 7.7 | 8.4 | 5.9 | 5.4 |
| Precipitation (mm) | 55 | 59 | 82 | 85 | 108 | 123 | 130 | 82 | 157 | 79 | 105 | 89 |
| Sunny days | 6 | 6 | 19 | 11 | 10 | 7 | 7 | 8 | 3 | 13 | 8 | 6 |
| Rainy days | 6 | 7 | 10 | 19 | 21 | 23 | 24 | 23 | 27 | 18 | 20 | 14 |
| Snow days | 19 | 15 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 11 |
The best time to visit Iwadate during the most sunny months:
The largest precipitation sum in Iwadate is at