Average annual temperature is 12.2 °C
Absolute maximum temperature: 32.9 °C
Absolute minimum temperature: -10.0 °C
Number of sunny days: 79 days
Number of rainy days: 239 days
Number of snow days: 47 days
Look at detailed online map of Ōyama-nagane
* Weather data for Ōyama-nagane 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) | 9.8 | 8.5 | 17.2 | 18.1 | 21.2 | 25.3 | 29.0 | 32.9 | 30.4 | 22.3 | 22.0 | 14.6 |
| Average daytime temperature (°C) | 1.3 | 2.0 | 9.0 | 12.0 | 16.3 | 21.3 | 25.1 | 29.8 | 25.3 | 17.7 | 11.8 | 4.4 |
| Average temperature (°C) | -0.6 | 0.4 | 5.9 | 9.3 | 13.1 | 18.7 | 22.9 | 26.8 | 22.6 | 15.1 | 8.9 | 2.3 |
| Average night temperature (°C) | -2.2 | -1.2 | 3.5 | 7.2 | 10.6 | 16.6 | 21.1 | 24.6 | 20.6 | 12.9 | 6.6 | 0.3 |
| Absolute minimum temperature (°C) | -10.0 | -5.0 | -0.1 | 3.3 | 4.9 | 13.2 | 17.4 | 22.3 | 15.5 | 6.4 | -1.7 | -4.8 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.0 | 6.4 | 8.7 | 9.1 | 9.8 | 9.1 | 10.1 | 11.2 | 7.8 | 8.1 | 5.7 | 4.7 |
| Precipitation (mm) | 136 | 90 | 71 | 142 | 116 | 103 | 174 | 53 | 146 | 127 | 198 | 112 |
| Sunny days | 1 | 2 | 12 | 7 | 14 | 11 | 6 | 7 | 8 | 8 | 3 | 0 |
| Rainy days | 10 | 12 | 18 | 23 | 17 | 19 | 25 | 24 | 22 | 23 | 25 | 21 |
| Snow days | 20 | 14 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 10 |
The best time to visit Ōyama-nagane during the most sunny months:
The largest precipitation sum in Ōyama-nagane is at