Average annual temperature is 13.8 °C
Absolute maximum temperature: 33.8 °C
Absolute minimum temperature: -9.6 °C
Number of sunny days: 132 days
Number of rainy days: 218 days
Number of snow days: 15 days
Look at detailed online map of Ōasa
* Weather data for Ōasa 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) | 14.1 | 14.5 | 21.7 | 24.6 | 28.8 | 28.3 | 33.1 | 33.8 | 30.9 | 24.2 | 24.8 | 17.4 |
| Average daytime temperature (°C) | 6.5 | 7.9 | 14.8 | 17.2 | 21.5 | 25.1 | 29.1 | 30.4 | 27.3 | 19.9 | 14.9 | 9.0 |
| Average temperature (°C) | 2.3 | 3.3 | 8.8 | 11.9 | 16.3 | 20.0 | 24.7 | 25.7 | 22.9 | 14.6 | 9.9 | 4.7 |
| Average night temperature (°C) | -0.9 | -0.3 | 4.2 | 7.7 | 12.2 | 16.3 | 21.3 | 22.5 | 19.9 | 10.8 | 6.0 | 1.5 |
| Absolute minimum temperature (°C) | -9.6 | -5.6 | -4.4 | 2.0 | 6.7 | 9.3 | 16.9 | 20.1 | 15.2 | 6.9 | -0.4 | -3.9 |
| 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 | 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) | 6.0 | 5.9 | 8.0 | 7.7 | 8.3 | 7.6 | 8.9 | 9.5 | 8.3 | 8.2 | 7.0 | 5.6 |
| Precipitation (mm) | 76 | 84 | 79 | 223 | 192 | 235 | 201 | 165 | 88 | 25 | 53 | 87 |
| Sunny days | 11 | 11 | 18 | 14 | 16 | 8 | 5 | 2 | 5 | 18 | 13 | 11 |
| Rainy days | 13 | 14 | 13 | 16 | 15 | 22 | 26 | 29 | 25 | 13 | 16 | 16 |
| Snow days | 7 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
The largest precipitation sum in Ōasa is at