Heavy Rain and Thunderstorms Expected in Hawaii County
Heavy Rain and Thunderstorms Expected in Hawaii County
US · Published Sep 23, 2026
Hawaii County is bracing for a period of heavy rainfall and thunderstorms starting tonight, September 23, 2026, and continuing into Wednesday.
The National Weather Service forecasts occasional showers with locally heavy rainfall and isolated thunderstorms across various regions, including Hilo, Kona, Waimea, Kohala, and South Big Island.

Impact & Risks

The heavy rainfall and thunderstorms could lead to localized flooding, especially in windward and mauka areas. Strong winds may cause minor damage to vegetation and unsecured objects. Residents in areas prone to flooding should remain alert, as the forecast indicates a high likelihood of rain accumulation. Coastal regions may experience rough seas due to increased wind activity, posing risks to small craft operations.

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