Pack or skip
Flip-flops for Tokyo in September
Verdict
Optional
Warm enough to wear in the evening or on the beach; not on a city walking day.
Why
Tokyo in September averages highs of 80°F, lows of 68°F, 12 rainy days.
That climate makes flip-flops a judgment call. Warm enough to wear in the evening or on the beach; not on a city walking day.