Pack or skip
Flip-flops for Jacksonville in September
Verdict
Optional
Warm enough to wear in the evening or on the beach; not on a city walking day.
Why
Jacksonville in September averages highs of 87°F, lows of 70°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.