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Weather in Hawaii in October. Average high temperatures in Hawaii in October hover in the mid to upper 80â²s, with lows in the mid 70â²s. You can expect cooling tradewind breezes most of the time, although weather patterns change quite frequently.
Quick Answer. The climate of Hawaii is predominantly mild and characterized by the persistent flow of trade winds coming from the northeasterly direction. The tropical island has small annual variations in temperatures and rare occurrences of heavy storms.