Average annual temperature is 16.7 °C
Absolute maximum temperature: 38.4 °C
Absolute minimum temperature: -5.5 °C
Number of sunny days: 176 days
Number of rainy days: 187 days
Number of snow days: 2 days
Look at detailed online map of Ōnomachi
* Weather data for Ōnomachi 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) | 13.5 | 17.5 | 23.5 | 23.5 | 30.8 | 30.2 | 38.4 | 35.3 | 34.6 | 28.6 | 25.6 | 21.0 |
| Average daytime temperature (°C) | 8.9 | 10.8 | 16.4 | 19.6 | 22.3 | 26.3 | 32.5 | 32.9 | 29.9 | 22.6 | 18.3 | 13.5 |
| Average temperature (°C) | 4.2 | 5.9 | 11.9 | 15.4 | 18.0 | 22.4 | 27.8 | 28.7 | 26.2 | 17.8 | 13.4 | 8.1 |
| Average night temperature (°C) | 0.2 | 1.5 | 7.7 | 11.7 | 14.3 | 19.3 | 24.2 | 25.7 | 23.3 | 13.6 | 9.3 | 3.7 |
| Absolute minimum temperature (°C) | -5.5 | -3.7 | 0.7 | 4.1 | 7.8 | 14.9 | 21.3 | 24.3 | 17.0 | 9.3 | 4.1 | -2.0 |
| 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 | 14.5 | 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) | 7.2 | 7.6 | 7.4 | 8.9 | 8.6 | 7.4 | 10.8 | 11.4 | 9.0 | 8.5 | 7.1 | 7.4 |
| Precipitation (mm) | 36 | 45 | 129 | 117 | 167 | 287 | 52 | 98 | 223 | 103 | 64 | 36 |
| Sunny days | 16 | 19 | 14 | 16 | 13 | 10 | 16 | 10 | 7 | 18 | 14 | 23 |
| Rainy days | 13 | 9 | 17 | 14 | 18 | 20 | 15 | 21 | 23 | 13 | 16 | 8 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Ōnomachi during the most sunny months:
The largest precipitation sum in Ōnomachi is at