Average annual temperature is 16.5 °C
Absolute maximum temperature: 35.9 °C
Absolute minimum temperature: -3.9 °C
Number of sunny days: 186 days
Number of rainy days: 179 days
Look at detailed online map of Ōi
* Weather data for Ōi 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) | 17.0 | 13.6 | 19.9 | 22.5 | 24.9 | 28.5 | 33.6 | 35.9 | 32.5 | 28.0 | 25.4 | 19.9 |
| Average daytime temperature (°C) | 9.4 | 9.8 | 15.0 | 17.7 | 21.4 | 24.5 | 29.5 | 31.9 | 29.6 | 22.9 | 17.4 | 11.7 |
| Average temperature (°C) | 5.4 | 6.0 | 11.0 | 14.1 | 18.1 | 21.7 | 26.7 | 28.4 | 26.0 | 18.3 | 13.3 | 7.8 |
| Average night temperature (°C) | 2.4 | 2.5 | 7.1 | 10.5 | 15.0 | 19.0 | 23.9 | 25.3 | 23.0 | 14.6 | 9.9 | 4.7 |
| Absolute minimum temperature (°C) | -3.9 | -1.7 | -0.7 | 7.1 | 9.3 | 14.3 | 20.8 | 23.4 | 20.2 | 10.5 | 3.4 | -1.3 |
| 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 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.3 | 6.7 | 8.5 | 7.9 | 8.9 | 7.6 | 9.5 | 10.1 | 9.3 | 8.6 | 8.0 | 7.0 |
| Precipitation (mm) | 45 | 64 | 93 | 212 | 218 | 198 | 124 | 111 | 58 | 16 | 46 | 51 |
| Sunny days | 19 | 14 | 20 | 17 | 16 | 11 | 16 | 5 | 8 | 23 | 18 | 19 |
| Rainy days | 12 | 14 | 11 | 13 | 15 | 19 | 15 | 26 | 22 | 8 | 12 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ōi is at