Is the climate of Hilo Hawaii affected by a large body water?

Yes.

Hilo is located on the Big Island of Hawaii and is known for its tropical rainforest climate. The trade winds that blow from the northeast across the Pacific Ocean bring moisture to the island, which is then condensed and falls as rain. The presence of the Pacific Ocean helps to moderate the temperature in Hilo, keeping it relatively mild throughout the year. The average temperature in Hilo is around 75 degrees Fahrenheit, with highs in the 80s and lows in the 60s.

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