Average annual temperature is 12.9 °C
Absolute maximum temperature: 34.5 °C
Absolute minimum temperature: -15.0 °C
Number of sunny days: 144 days
Number of rainy days: 202 days
Number of snow days: 19 days
Look at detailed online map of Ōya
* Weather data for Ōya 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) | 15.2 | 15.9 | 19.5 | 27.1 | 30.0 | 29.0 | 32.6 | 33.6 | 34.5 | 23.9 | 24.1 | 19.6 |
| Average daytime temperature (°C) | 5.6 | 6.8 | 14.2 | 17.8 | 21.1 | 24.3 | 29.8 | 31.3 | 28.6 | 19.1 | 15.3 | 9.7 |
| Average temperature (°C) | -0.3 | 0.8 | 8.0 | 11.5 | 15.2 | 19.7 | 24.7 | 26.2 | 23.2 | 13.2 | 9.1 | 3.4 |
| Average night temperature (°C) | -4.9 | -3.7 | 3.3 | 6.0 | 9.9 | 15.8 | 20.2 | 21.9 | 19.3 | 8.6 | 4.7 | -1.3 |
| Absolute minimum temperature (°C) | -15.0 | -10.4 | -4.1 | -0.7 | 1.9 | 6.9 | 16.4 | 17.8 | 12.7 | 2.3 | -2.4 | -9.9 |
| 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 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.3 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.5 | 7.7 | 8.8 | 9.2 | 9.5 | 8.3 | 10.2 | 11.0 | 9.4 | 8.8 | 7.8 | 7.3 |
| Precipitation (mm) | 44 | 58 | 106 | 124 | 212 | 235 | 150 | 36 | 150 | 71 | 73 | 62 |
| Sunny days | 14 | 14 | 10 | 14 | 15 | 8 | 8 | 8 | 6 | 19 | 15 | 13 |
| Rainy days | 6 | 9 | 21 | 16 | 16 | 22 | 23 | 23 | 24 | 12 | 15 | 15 |
| Snow days | 11 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The largest precipitation sum in Ōya is at