Average annual temperature is 15.8 °C
Absolute maximum temperature: 34.1 °C
Absolute minimum temperature: -4.5 °C
Number of sunny days: 138 days
Number of rainy days: 223 days
Number of snow days: 4 days
Look at detailed online map of Izumisano Shi
* Weather data for Izumisano Shi 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) | 17.3 | 15.5 | 20.6 | 24.1 | 27.4 | 30.3 | 34.0 | 34.1 | 33.0 | 24.3 | 25.7 | 21.0 |
| Average daytime temperature (°C) | 8.3 | 9.1 | 15.5 | 18.5 | 22.3 | 25.3 | 30.6 | 31.8 | 29.6 | 21.2 | 16.5 | 11.6 |
| Average temperature (°C) | 4.6 | 5.2 | 10.5 | 13.8 | 17.8 | 21.7 | 26.5 | 27.4 | 25.1 | 16.8 | 12.1 | 7.7 |
| Average night temperature (°C) | 1.1 | 1.5 | 5.9 | 9.6 | 13.8 | 18.3 | 23.0 | 24.0 | 21.6 | 13.0 | 8.3 | 4.0 |
| Absolute minimum temperature (°C) | -4.5 | -3.2 | -0.4 | 4.3 | 8.2 | 11.8 | 17.4 | 21.9 | 18.5 | 8.9 | 2.7 | -1.1 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 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) | 7.2 | 6.8 | 8.8 | 8.2 | 9.2 | 7.1 | 10.4 | 9.9 | 9.8 | 8.6 | 7.3 | 7.2 |
| Precipitation (mm) | 75 | 43 | 106 | 173 | 204 | 405 | 77 | 206 | 94 | 72 | 132 | 43 |
| Sunny days | 7 | 12 | 18 | 14 | 15 | 10 | 11 | 2 | 9 | 14 | 14 | 12 |
| Rainy days | 22 | 15 | 13 | 16 | 16 | 20 | 20 | 29 | 21 | 17 | 16 | 18 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Izumisano Shi is at