Pack or skip
Winter coat for Hilo in May
Verdict
Skip it
Lows stay near 64°F — a coat is overkill.
Why
Hilo in May averages highs of 81°F, lows of 64°F, 14 rainy days.
That climate means a winter coat isn't pulling its weight. Lows stay near 64°F — a coat is overkill.
What to bring instead
Consider packable down jacket instead →
See the pack-or-skip verdict for packable down jacket in Hilo in May.