Normally the average weather in Osaka in the course of August is 27 with usual highs being around 33 with lows of 25. The table below has further info:
| Month | Degrees Celsius |
|---|---|
| Temperature | 27 |
| High Temperature | 33 |
| Low Temperature | 25 |
| Sunshine Per Day | 8 |
Useful Links: Osaka Weather: Average Weather & Yearly Climate