Pack or skip
Sunglasses for Hilo in May
Verdict
Pack it
Highs around 81°F — plenty of daylight glare.
Why
Hilo in May averages highs of 81°F, lows of 64°F, 14 rainy days.
That climate means sunglasses earns its space in the bag. Highs around 81°F — plenty of daylight glare.