Pack or skip
Sun hat for Busan in December
Verdict
Skip it
Highs around 50°F — too cool for prolonged sun exposure.
Why
Busan in December averages highs of 50°F, lows of 37°F, 5 rainy days.
That climate means a sun hat isn't pulling its weight. Highs around 50°F — too cool for prolonged sun exposure.