Pack or skip
Umbrella for Hilo in May
Verdict
Pack it
Around 14 rainy days across the month — an umbrella earns its space.
Why
Hilo in May averages highs of 81°F, lows of 64°F, 14 rainy days.
That climate means an umbrella earns its space in the bag. Around 14 rainy days across the month — an umbrella earns its space.