Average annual temperature is 9.5 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -19.8 °C
Number of sunny days: 145 days
Number of rainy days: 184 days
Number of snow days: 36 days
Look at detailed online map of Hiroo-gun
* Weather data for Hiroo-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) | 7.4 | 8.0 | 15.5 | 17.8 | 25.8 | 28.5 | 34.2 | 33.0 | 30.2 | 24.0 | 19.4 | 12.4 |
| Average daytime temperature (°C) | -1.5 | -0.1 | 8.2 | 13.1 | 17.7 | 21.7 | 26.2 | 27.3 | 24.2 | 16.8 | 10.8 | 2.5 |
| Average temperature (°C) | -6.7 | -4.2 | 3.1 | 8.5 | 12.5 | 17.2 | 21.9 | 23.5 | 20.0 | 12.0 | 6.6 | -1.8 |
| Average night temperature (°C) | -11.6 | -8.4 | -1.6 | 4.7 | 8.4 | 13.6 | 18.4 | 20.6 | 16.6 | 8.1 | 2.7 | -5.7 |
| Absolute minimum temperature (°C) | -19.8 | -16.7 | -9.2 | -1.3 | 1.6 | 8.6 | 13.9 | 15.8 | 9.2 | 0.8 | -5.2 | -13.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.1 | 7.1 | 8.1 | 8.1 | 9.0 | 8.9 | 9.0 | 7.0 | 6.7 | 8.2 | 6.5 | 6.2 |
| Precipitation (mm) | 43 | 79 | 98 | 191 | 99 | 85 | 80 | 152 | 209 | 120 | 176 | 52 |
| Sunny days | 14 | 10 | 18 | 11 | 9 | 11 | 13 | 4 | 9 | 16 | 13 | 17 |
| Rainy days | 2 | 7 | 10 | 19 | 22 | 19 | 18 | 27 | 21 | 15 | 17 | 7 |
| Snow days | 15 | 11 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 |
The largest precipitation sum in Hiroo-gun is at