Average annual temperature is 13.1 °C
Absolute maximum temperature: 36.4 °C
Absolute minimum temperature: -8.0 °C
Number of sunny days: 68 days
Number of rainy days: 270 days
Number of snow days: 27 days
Look at detailed online map of Iwafune-gun
* Weather data for Iwafune-gun 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) | 14.0 | 10.5 | 21.5 | 24.4 | 29.4 | 28.7 | 32.5 | 36.4 | 33.7 | 24.4 | 25.7 | 16.0 |
| Average daytime temperature (°C) | 3.1 | 3.6 | 11.5 | 16.1 | 19.7 | 24.4 | 28.8 | 33.4 | 28.1 | 18.6 | 14.0 | 7.3 |
| Average temperature (°C) | 0.4 | 0.9 | 6.2 | 10.8 | 14.8 | 20.2 | 24.4 | 28.1 | 23.3 | 13.9 | 9.8 | 3.9 |
| Average night temperature (°C) | -1.9 | -1.2 | 1.5 | 6.5 | 10.4 | 16.8 | 20.5 | 23.5 | 20.0 | 10.2 | 6.4 | 1.0 |
| Absolute minimum temperature (°C) | -8.0 | -4.5 | -3.6 | -0.2 | 2.8 | 12.3 | 15.0 | 20.5 | 13.0 | 6.7 | 1.3 | -5.1 |
| 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) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 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) | 3.7 | 4.3 | 7.9 | 7.9 | 8.3 | 8.1 | 9.3 | 11.9 | 7.8 | 7.9 | 5.3 | 3.5 |
| Precipitation (mm) | 224 | 189 | 152 | 150 | 205 | 255 | 238 | 65 | 225 | 239 | 266 | 301 |
| Sunny days | 0 | 1 | 14 | 10 | 11 | 4 | 6 | 5 | 4 | 5 | 6 | 2 |
| Rainy days | 18 | 17 | 17 | 20 | 20 | 26 | 25 | 26 | 26 | 26 | 24 | 25 |
| Snow days | 13 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
The best time to visit Iwafune-gun during the most sunny months:
The largest precipitation sum in Iwafune-gun is at