Average annual temperature is 16.5 °C
Absolute maximum temperature: 35.0 °C
Absolute minimum temperature: -5.5 °C
Number of sunny days: 166 days
Number of rainy days: 198 days
Number of snow days: 1 day
Look at detailed online map of Onna
* Weather data for Onna 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) | 14.4 | 18.5 | 24.0 | 23.5 | 28.6 | 30.7 | 34.9 | 35.0 | 33.2 | 27.1 | 25.5 | 22.1 |
| Average daytime temperature (°C) | 9.5 | 11.4 | 16.4 | 19.7 | 22.0 | 25.8 | 31.2 | 31.7 | 29.5 | 22.3 | 18.3 | 13.6 |
| Average temperature (°C) | 4.7 | 6.4 | 12.0 | 15.2 | 17.8 | 22.2 | 27.0 | 27.7 | 25.6 | 17.5 | 13.1 | 8.2 |
| Average night temperature (°C) | 0.6 | 2.2 | 8.1 | 11.1 | 13.8 | 19.3 | 23.4 | 24.5 | 22.6 | 13.3 | 9.0 | 3.7 |
| Absolute minimum temperature (°C) | -5.5 | -3.2 | 1.6 | 5.1 | 7.8 | 15.9 | 20.5 | 22.2 | 18.1 | 8.8 | 3.6 | -3.5 |
| 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 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.0 | 7.1 | 7.9 | 8.6 | 8.5 | 7.3 | 10.3 | 11.1 | 9.0 | 8.7 | 7.3 | 7.7 |
| Precipitation (mm) | 32 | 64 | 150 | 157 | 204 | 375 | 63 | 259 | 205 | 116 | 62 | 46 |
| Sunny days | 16 | 16 | 14 | 14 | 11 | 5 | 16 | 9 | 10 | 16 | 17 | 22 |
| Rainy days | 15 | 11 | 17 | 16 | 20 | 25 | 15 | 22 | 20 | 15 | 13 | 9 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Onna during the most sunny months:
The largest precipitation sum in Onna is at