Today’s Big Island Weather Forecast
Alerts
Flash Flood Watch Issued: September 15 at 3:25 AM HST until September 16 at 6:00 PM HST by NWS
Areas affected: Portions of the Big Island
Flood Advisory Issued: September 15 at 3:23 AM HST by NWS
Areas affected: Hawaii
Check our breaking news section for any urgent weather alerts or updates to the weather alerts listed above.
**Click directly on the images below to make them larger. Charts include: Big Island high/low forecasted temperatures, projected winds, projected localized weather conditions, vog/SO2 forecast and expected wave heights.**
Today
Windward mostly cloudy with haze, showers likely and isolated thunderstorms. Leeward to be mostly sunny in the morning then becoming mostly cloudy with haze, isolated showers in the morning and isolated thunderstorms through the day with showers likely in the afternoon. Locally heavy rainfall possible. Highs 83° to 88°. East winds around 15 mph.
Tonight
Windward areas will be cloudy with frequent showers and slight chance of thunderstorms. Leeward areas will be partly cloudy with haze, a slight chance of thunderstorms and isolated showers. Locally heavy rainfall possible. Lows 72° to 77°. Variable wins to 15 mph.
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