Hawaii County Weather Forecast for October 19, 2025
A locally breezy and slightly unstable trade wind flow will ease slightly late Sunday through Tuesday.
Showers will be focused along windward areas, though
Tonight:
Numerous showers in the evening, then occasional showers after midnight. Lows 65 to 71 near the shore to 52 to 58 at 4000 feet. Chance of rain near 100 percent.
Tomorrow:
Occasional showers in the morning, then numerous showers in the afternoon. Highs 80 to 87 near the shore to around 68 at 4000 feet.
Next Night:
Scattered showers in the evening, then numerous showers after midnight. Lows 64 to 71 near the shore to 52 to 58 at 4000 feet.
Alternate Forecast:
Tonight: Mostly cloudy with scattered showers in the evening, then partly cloudy with isolated showers after midnight. Lows 71 to 76 near the shore to 50 to 55 near 5000 feet.
Sunday:
Sunny with isolated showers in the morning, then mostly cloudy with scattered showers and isolated thunderstorms in the afternoon. Highs 84 to 89 near the shore to around 68 near 5000 feet.
Author summary: Forecast for Hawaii County.