Average annual temperature is 15.7 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: -7.4 °C
Number of sunny days: 170 days
Number of rainy days: 193 days
Number of snow days: 2 days
Look at detailed online map of Iwazonochō
* Weather data for Iwazonochō 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) | 15.7 | 14.5 | 22.3 | 23.5 | 25.6 | 29.4 | 35.4 | 36.3 | 34.5 | 25.4 | 26.3 | 19.2 |
| Average daytime temperature (°C) | 8.1 | 8.8 | 15.1 | 17.8 | 21.6 | 24.8 | 30.6 | 32.5 | 30.2 | 21.6 | 16.5 | 11.4 |
| Average temperature (°C) | 3.8 | 4.8 | 10.4 | 13.5 | 17.5 | 21.5 | 26.6 | 28.0 | 25.8 | 16.8 | 11.9 | 7.0 |
| Average night temperature (°C) | 0.3 | 1.4 | 6.2 | 9.5 | 14.1 | 18.5 | 23.3 | 24.8 | 22.4 | 12.9 | 8.4 | 3.3 |
| Absolute minimum temperature (°C) | -7.4 | -2.3 | -0.5 | 4.3 | 8.3 | 12.5 | 19.1 | 23.3 | 18.6 | 7.7 | 1.5 | -2.3 |
| 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 | 10.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.0 | 6.5 | 8.4 | 7.9 | 9.2 | 6.7 | 9.8 | 10.1 | 9.5 | 8.6 | 7.3 | 7.0 |
| Precipitation (mm) | 48 | 51 | 91 | 183 | 311 | 334 | 88 | 219 | 72 | 31 | 126 | 31 |
| Sunny days | 12 | 15 | 18 | 15 | 17 | 8 | 13 | 7 | 11 | 15 | 18 | 21 |
| Rainy days | 17 | 13 | 13 | 15 | 14 | 22 | 18 | 24 | 19 | 16 | 12 | 10 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Iwazonochō is at