Average annual temperature is 13.2 °C
Absolute maximum temperature: 34.3 °C
Absolute minimum temperature: -8.9 °C
Number of sunny days: 136 days
Number of rainy days: 221 days
Number of snow days: 8 days
Look at detailed online map of Shimoiwa
* Weather data for Shimoiwa 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) | 13.3 | 15.0 | 21.7 | 24.5 | 30.0 | 29.0 | 34.3 | 33.0 | 31.9 | 23.9 | 22.6 | 19.9 |
| Average daytime temperature (°C) | 6.7 | 8.1 | 13.8 | 18.2 | 20.4 | 23.7 | 29.7 | 29.8 | 27.2 | 19.3 | 15.6 | 10.3 |
| Average temperature (°C) | 0.9 | 2.3 | 8.2 | 12.1 | 14.9 | 19.4 | 24.6 | 24.8 | 22.5 | 13.7 | 9.6 | 4.4 |
| Average night temperature (°C) | -3.2 | -2.2 | 3.5 | 7.1 | 10.0 | 15.8 | 20.0 | 20.9 | 19.0 | 9.1 | 5.3 | 0.1 |
| Absolute minimum temperature (°C) | -8.9 | -6.3 | -5.3 | -0.5 | 3.1 | 10.4 | 16.0 | 18.2 | 12.3 | 3.7 | 0.1 | -5.8 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.3 | 7.8 | 7.8 | 8.8 | 8.6 | 7.3 | 10.1 | 10.7 | 9.2 | 8.5 | 7.5 | 7.7 |
| Precipitation (mm) | 39 | 88 | 183 | 110 | 216 | 386 | 79 | 185 | 243 | 150 | 77 | 46 |
| Sunny days | 17 | 13 | 12 | 10 | 11 | 3 | 11 | 2 | 7 | 11 | 18 | 21 |
| Rainy days | 9 | 12 | 19 | 20 | 20 | 27 | 20 | 29 | 23 | 20 | 12 | 10 |
| Snow days | 5 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Shimoiwa during the most sunny months:
The largest precipitation sum in Shimoiwa is at