Hilo, being on a Hawaiian island is of course, warm all year round. Temperature does not fluctuate much at all, highs are in the low 80s and lows are in the mid 60s.

Rainfall is definitely something to consider for a trip to Hilo however. The annual precipitation average in Hilo ranges from 150 to 200 inches annually! To give a comparison, New York City receives around 60 " annualy, which is considered a lot! The rainiest months are between March and April as well as November and December. Expecting rain should be a part of your travel plan no matter what time of year you plan to visit Hilo however; don't forget an umbrella! On the up side, Hilo is incredibly green because of this.