Average annual temperature is 16.5 °C
Absolute maximum temperature: 40.9 °C
Absolute minimum temperature: -4.8 °C
Number of sunny days: 177 days
Number of rainy days: 184 days
Number of snow days: 4 days
Look at detailed online map of Shimokoizumi
* Weather data for Shimokoizumi 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) | 13.8 | 18.5 | 24.1 | 29.7 | 32.9 | 31.8 | 40.9 | 39.7 | 34.9 | 27.2 | 28.1 | 19.6 |
| Average daytime temperature (°C) | 9.1 | 11.2 | 18.0 | 21.7 | 24.0 | 27.1 | 34.3 | 33.9 | 30.5 | 22.8 | 18.0 | 12.8 |
| Average temperature (°C) | 3.6 | 5.5 | 12.2 | 15.3 | 18.3 | 22.6 | 28.4 | 28.5 | 25.9 | 17.3 | 12.1 | 6.9 |
| Average night temperature (°C) | -0.5 | 1.0 | 7.1 | 9.9 | 13.5 | 19.0 | 23.8 | 24.7 | 22.7 | 12.8 | 7.7 | 2.6 |
| Absolute minimum temperature (°C) | -4.8 | -3.6 | 1.3 | 3.8 | 7.2 | 13.8 | 21.0 | 22.8 | 16.0 | 8.8 | 1.6 | -3.1 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.5 | 8.2 | 8.2 | 9.1 | 9.2 | 7.7 | 10.0 | 10.6 | 8.8 | 8.6 | 7.6 | 7.8 |
| Precipitation (mm) | 15 | 33 | 94 | 57 | 166 | 294 | 95 | 190 | 178 | 99 | 60 | 22 |
| Sunny days | 23 | 19 | 17 | 15 | 15 | 7 | 9 | 5 | 6 | 17 | 22 | 22 |
| Rainy days | 5 | 8 | 14 | 15 | 16 | 23 | 22 | 26 | 24 | 14 | 8 | 9 |
| Snow days | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Shimokoizumi is at