Pack or skip
Rain jacket for Hilo in September
Verdict
Pack it
Around 15 rainy days — a shell keeps you moving between subway stops.
Why
Hilo in September averages highs of 82°F, lows of 65°F, 15 rainy days.
That climate means a rain jacket earns its space in the bag. Around 15 rainy days — a shell keeps you moving between subway stops.