Pack or skip
Winter coat for San Diego in December
Verdict
Optional
Lows around 50°F — a packable puffer covers the cold mornings.
Why
San Diego in December averages highs of 66°F, lows of 50°F, 5 rainy days.
That climate makes a winter coat a judgment call. Lows around 50°F — a packable puffer covers the cold mornings.