Pack or skip
Packable down jacket for Osaka in August
Verdict
Skip it
Lows around 76°F — you'll never reach for it.
Why
Osaka in August averages highs of 89°F, lows of 76°F, 9 rainy days.
That climate means a packable down jacket isn't pulling its weight. Lows around 76°F — you'll never reach for it.