Pack or skip
Sunglasses for San Diego in December
Verdict
Pack it
Highs around 66°F — plenty of daylight glare.
Why
San Diego in December averages highs of 66°F, lows of 50°F, 5 rainy days.
That climate means sunglasses earns its space in the bag. Highs around 66°F — plenty of daylight glare.