Pack or skip
Sun hat for Lisbon in December
Verdict
Skip it
Highs around 59°F — too cool for prolonged sun exposure.
Why
Lisbon in December averages highs of 59°F, lows of 48°F, 12 rainy days.
That climate means a sun hat isn't pulling its weight. Highs around 59°F — too cool for prolonged sun exposure.