Pack or skip
Flip-flops for San Diego in October
Verdict
Optional
Warm enough to wear in the evening or on the beach; not on a city walking day.
Why
San Diego in October averages highs of 77°F, lows of 63°F, 2 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.