Average annual temperature is 16.5 °C
Absolute maximum temperature: 35.8 °C
Absolute minimum temperature: -5.2 °C
Number of sunny days: 142 days
Number of rainy days: 221 days
Number of snow days: 2 days
Look at detailed online map of Hirooka
* Weather data for Hirooka 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) | 16.0 | 18.5 | 24.3 | 24.6 | 31.8 | 31.0 | 35.8 | 34.2 | 32.8 | 31.1 | 24.9 | 22.6 |
| Average daytime temperature (°C) | 9.5 | 11.0 | 16.6 | 19.6 | 22.1 | 26.1 | 31.8 | 31.9 | 29.7 | 22.7 | 18.8 | 13.9 |
| Average temperature (°C) | 4.7 | 6.4 | 11.9 | 15.2 | 17.7 | 21.9 | 26.6 | 27.2 | 25.5 | 17.6 | 14.2 | 8.7 |
| Average night temperature (°C) | 1.0 | 2.6 | 8.3 | 11.8 | 14.6 | 19.1 | 23.0 | 24.2 | 22.7 | 13.6 | 10.7 | 4.4 |
| Absolute minimum temperature (°C) | -5.2 | -4.2 | 0.5 | 4.7 | 8.8 | 15.2 | 20.5 | 22.8 | 17.2 | 9.9 | 3.9 | -1.7 |
| 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) | 6.5 | 7.0 | 7.6 | 8.7 | 8.3 | 7.0 | 10.8 | 11.2 | 9.1 | 8.7 | 7.2 | 7.5 |
| Precipitation (mm) | 62 | 101 | 162 | 179 | 159 | 282 | 45 | 123 | 215 | 141 | 82 | 53 |
| Sunny days | 16 | 13 | 8 | 12 | 13 | 7 | 17 | 2 | 6 | 14 | 14 | 20 |
| Rainy days | 13 | 15 | 23 | 18 | 18 | 23 | 14 | 29 | 24 | 17 | 16 | 11 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Hirooka during the most sunny months:
The largest precipitation sum in Hirooka is at