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. The main focus for this week is on the increasing shower trends and the potential.

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. Northeast winds up to 10 mph shifting to the northwest after midnight.

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. Isolated showers in the afternoon.

Additional Forecast

Mostly sunny with isolated showers. Highs around 82 near the shore to 72 to 80 near 3000 feet.

Author's summary: Hawaii weather forecast for October 15, 2025.

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

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