Average annual temperature is 14.5 °C
Absolute maximum temperature: 34.3 °C
Absolute minimum temperature: -8.8 °C
Number of sunny days: 147 days
Number of rainy days: 210 days
Number of snow days: 8 days
Look at detailed online map of Okayama-ken
* Weather data for Okayama-ken 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) | 15.5 | 14.7 | 22.0 | 25.2 | 29.5 | 30.6 | 33.7 | 34.3 | 31.7 | 25.8 | 24.9 | 19.1 |
| Average daytime temperature (°C) | 7.6 | 8.8 | 15.8 | 18.3 | 22.5 | 25.9 | 30.1 | 31.0 | 28.9 | 21.0 | 15.8 | 10.2 |
| Average temperature (°C) | 2.4 | 3.7 | 9.5 | 12.5 | 17.1 | 21.0 | 25.6 | 26.6 | 24.0 | 15.4 | 10.5 | 5.4 |
| Average night temperature (°C) | -1.3 | -0.2 | 4.2 | 7.7 | 12.8 | 17.2 | 21.8 | 23.4 | 20.8 | 11.0 | 6.2 | 1.7 |
| Absolute minimum temperature (°C) | -8.8 | -4.2 | -2.8 | 1.6 | 6.7 | 11.2 | 17.1 | 21.8 | 17.3 | 5.5 | -1.1 | -3.1 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 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) | 6.6 | 6.6 | 8.2 | 7.6 | 8.5 | 7.0 | 9.1 | 9.4 | 8.8 | 8.8 | 7.4 | 6.8 |
| Precipitation (mm) | 39 | 46 | 82 | 199 | 234 | 219 | 173 | 181 | 96 | 25 | 41 | 69 |
| Sunny days | 13 | 13 | 16 | 14 | 17 | 9 | 7 | 2 | 6 | 18 | 16 | 16 |
| Rainy days | 14 | 13 | 15 | 16 | 14 | 21 | 24 | 29 | 24 | 13 | 14 | 13 |
| Snow days | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The largest precipitation sum in Okayama-ken is at