Average annual temperature is 16.4 °C
Absolute maximum temperature: 36.5 °C
Absolute minimum temperature: -8.3 °C
Number of sunny days: 177 days
Number of rainy days: 187 days
Number of snow days: 1 day
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) | 18.0 | 15.6 | 23.8 | 26.4 | 29.7 | 32.4 | 35.2 | 36.5 | 33.5 | 29.5 | 26.9 | 20.1 |
| Average daytime temperature (°C) | 10.1 | 10.7 | 17.6 | 20.0 | 23.8 | 26.6 | 31.2 | 32.4 | 31.0 | 24.1 | 18.2 | 12.5 |
| Average temperature (°C) | 4.3 | 5.3 | 11.4 | 14.2 | 18.6 | 22.3 | 27.0 | 28.4 | 26.3 | 18.1 | 12.6 | 7.2 |
| Average night temperature (°C) | -0.3 | 0.7 | 5.9 | 8.9 | 14.1 | 18.3 | 23.2 | 25.1 | 22.5 | 12.7 | 8.1 | 2.9 |
| Absolute minimum temperature (°C) | -8.3 | -3.8 | -1.7 | 3.2 | 7.9 | 12.1 | 20.3 | 23.2 | 17.8 | 7.4 | 1.7 | -2.4 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 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) | 7.0 | 6.5 | 8.4 | 7.9 | 8.7 | 7.1 | 9.7 | 10.2 | 9.3 | 8.7 | 7.8 | 7.0 |
| Precipitation (mm) | 27 | 39 | 82 | 197 | 226 | 256 | 113 | 185 | 70 | 21 | 57 | 48 |
| Sunny days | 15 | 17 | 18 | 18 | 16 | 10 | 11 | 4 | 9 | 22 | 17 | 20 |
| Rainy days | 15 | 11 | 13 | 12 | 15 | 20 | 20 | 27 | 21 | 9 | 13 | 11 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ōi is at