Average annual temperature is 16.6 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: -4.6 °C
Number of sunny days: 156 days
Number of rainy days: 203 days
Number of snow days: 6 days
Look at detailed online map of Ōsaka-sayama
* Weather data for Ōsaka-sayama 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) | 17.1 | 15.6 | 20.6 | 23.5 | 25.7 | 29.3 | 33.7 | 35.6 | 33.2 | 24.9 | 26.9 | 21.5 |
| Average daytime temperature (°C) | 8.4 | 9.1 | 14.9 | 18.4 | 22.0 | 25.0 | 30.5 | 32.0 | 29.6 | 21.5 | 16.6 | 11.6 |
| Average temperature (°C) | 5.4 | 5.7 | 11.0 | 14.4 | 18.3 | 22.2 | 27.4 | 28.5 | 26.1 | 17.9 | 13.3 | 8.6 |
| Average night temperature (°C) | 2.4 | 2.5 | 7.2 | 10.7 | 14.8 | 19.4 | 24.5 | 25.5 | 23.0 | 14.5 | 10.1 | 5.7 |
| Absolute minimum temperature (°C) | -4.6 | -1.5 | 1.3 | 6.0 | 9.3 | 14.5 | 21.0 | 24.0 | 19.4 | 9.8 | 3.9 | 1.7 |
| 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) | 7.2 | 6.6 | 8.7 | 8.1 | 9.3 | 7.1 | 10.4 | 10.0 | 9.8 | 8.6 | 7.3 | 7.2 |
| Precipitation (mm) | 70 | 46 | 98 | 160 | 249 | 387 | 86 | 194 | 130 | 64 | 119 | 64 |
| Sunny days | 13 | 14 | 17 | 13 | 14 | 11 | 13 | 5 | 9 | 17 | 17 | 13 |
| Rainy days | 15 | 13 | 14 | 17 | 17 | 19 | 18 | 26 | 21 | 14 | 13 | 16 |
| Snow days | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The largest precipitation sum in Ōsaka-sayama is at