Average annual temperature is 10.0 °C
Absolute maximum temperature: 32.1 °C
Absolute minimum temperature: -12.7 °C
Number of sunny days: 63 days
Number of rainy days: 239 days
Number of snow days: 63 days
Look at detailed online map of Iwanome
* Weather data for Iwanome 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) | 7.0 | 6.8 | 16.0 | 19.3 | 24.4 | 25.8 | 30.5 | 32.1 | 29.9 | 20.1 | 19.9 | 11.2 |
| Average daytime temperature (°C) | -1.2 | -0.2 | 7.7 | 12.2 | 17.1 | 21.4 | 25.4 | 30.1 | 24.6 | 15.8 | 9.6 | 2.8 |
| Average temperature (°C) | -3.6 | -2.5 | 3.1 | 7.1 | 12.2 | 17.7 | 21.8 | 25.4 | 20.6 | 11.5 | 6.3 | 0.1 |
| Average night temperature (°C) | -5.9 | -4.7 | -0.7 | 2.9 | 7.9 | 14.4 | 18.8 | 21.8 | 17.7 | 8.1 | 3.7 | -2.4 |
| Absolute minimum temperature (°C) | -12.7 | -10.6 | -7.3 | -4.3 | -0.1 | 9.1 | 14.3 | 19.5 | 10.0 | 3.2 | -5.0 | -9.2 |
| 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 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.7 | 13.7 | 12.5 | 11.2 | 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) | 4.9 | 5.8 | 8.2 | 8.3 | 8.9 | 7.5 | 8.1 | 11.7 | 7.7 | 7.5 | 5.0 | 3.8 |
| Precipitation (mm) | 120 | 124 | 104 | 195 | 202 | 247 | 479 | 112 | 277 | 210 | 312 | 164 |
| Sunny days | 1 | 2 | 16 | 9 | 10 | 6 | 2 | 5 | 1 | 6 | 4 | 1 |
| Rainy days | 8 | 5 | 13 | 20 | 21 | 24 | 29 | 26 | 29 | 25 | 22 | 17 |
| Snow days | 22 | 21 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 13 |
The best time to visit Iwanome during the most sunny months:
The largest precipitation sum in Iwanome is at