Hawaii County Weather Forecast for October 15, 2025 | Big Island Now

Hawaii County Weather Forecast for October 15, 2025

Trade winds will strengthen to become moderate to locally breezy this week.

Rest Of This Afternoon

Partly sunny with scattered showers. Highs 80 to 86 near the shore to around 68 at 4000 feet.

Evening and Night

Numerous showers in the evening, then scattered showers after midnight. Lows 64 to 71 near the shore to 51 to 57 at 4000 feet.

Wednesday

Mostly sunny in the morning then becoming partly sunny. Highs 80 to 87 near the shore to 65 to 70 at 4000 feet.

Later This Week

Partly sunny with scattered showers. Highs 84 to 89 near the shore to around 68 near 5000 feet. Isolated showers in the evening. Lows around 73 near the shore to 49 to 55 near 5000 feet.

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Author's summary: Hawaii County weather forecast for October 15, 2025, predicts increasing shower trends.

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Big Island Now Big Island Now — 2025-10-15

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