National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Impacts from Lowell to impact the islands through Tuesday

Lowell is expected to bring various impacts to all islands through Tuesday. High surf will continue through Monday night. Flooding will be possible as showers and thunderstorms develop Sunday night through Tuesday, and there is the possibility for some tornadoes/waterspouts Monday and Monday night. Tropical storm force winds are expected to reach Kauai and Niihau late Monday through Monday night. Read More >

Hazardous Weather Conditions

Current conditions at

Hilo, Hilo International Airport (PHTO)

Lat: 19.72°NLon: 155.06°WElev: 36ft.

Light Rain

78°F

26°C

Humidity 90%
Wind Speed SW 6 mph
Barometer 29.86 in (1010.8 mb)
Dewpoint 75°F (24°C)
Visibility 8.00 mi
Heat Index80°F (27°C)
Last update 6 Sep 10:53 am HST
Extended Forecast for

Wainaku HI

Flood Watch September 6, 12:00pm until September 8, 06:00pm
High Surf Advisory September 6, 11:53am until September 8, 06:00am
Click here for hazard details and duration
Flood Watch
High Surf Advisory
  •  
    High Surf Advisory September 6, 11:53am until September 8, 06:00am

    NOW until 6:00am Tue

    High Surf Advisory

  • Today

    High: 82 °F

    Heavy Rain

  • Tonight

    Tonight: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 71. Southwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 71 °F

    Heavy Rain

  • Labor Day

    Labor Day: Frequent showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 84. Light south southeast wind becoming southeast 8 to 13 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 84 °F

    Heavy Rain

  • Monday Night

    Monday Night: Frequent showers. The rain could be heavy at times. Low around 73. South southeast wind 7 to 10 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 73 °F

    Heavy Rain

  • Tuesday

    Tuesday: Frequent showers, with thunderstorms also possible after noon. Some of the storms could produce heavy rainfall. High near 85. East southeast wind 7 to 11 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 85 °F

    Heavy Rain

  • Tuesday Night

    Tuesday Night: Showers likely, mainly before midnight. Mostly cloudy, with a low around 72. East southeast wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 72 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Frequent showers, mainly after noon. The rain could be heavy at times. High near 83. East wind 5 to 7 mph. Chance of precipitation is 80%.

    High: 83 °F

    Scattered
    Showers then
    Heavy Rain

  • Wednesday Night

    Wednesday Night: Frequent showers. The rain could be heavy at times. Low around 70. Northeast wind around 6 mph. Chance of precipitation is 80%.

    Low: 70 °F

    Heavy Rain

Detailed Forecast

Today
Showers likely, then frequent showers and possibly a thunderstorm after noon. Some of the storms could produce heavy rainfall. High near 82. South southeast wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 71. Southwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Labor Day
Frequent showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 84. Light south southeast wind becoming southeast 8 to 13 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Frequent showers. The rain could be heavy at times. Low around 73. South southeast wind 7 to 10 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Frequent showers, with thunderstorms also possible after noon. Some of the storms could produce heavy rainfall. High near 85. East southeast wind 7 to 11 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers likely, mainly before midnight. Mostly cloudy, with a low around 72. East southeast wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Frequent showers, mainly after noon. The rain could be heavy at times. High near 83. East wind 5 to 7 mph. Chance of precipitation is 80%.
Wednesday Night
Frequent showers. The rain could be heavy at times. Low around 70. Northeast wind around 6 mph. Chance of precipitation is 80%.
Thursday
Showers likely, mainly before noon. Partly sunny, with a high near 81. Northeast wind 5 to 7 mph becoming calm in the afternoon. Chance of precipitation is 60%.
Thursday Night
Scattered showers, mainly before midnight. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 40%.
Friday
Scattered showers. Mostly sunny, with a high near 82. Calm wind becoming east 5 to 7 mph. Chance of precipitation is 30%.
Friday Night
Scattered showers. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 40%.
Saturday
Scattered showers. Partly sunny, with a high near 82. Calm wind becoming east northeast 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wainaku HI
 19.75°N 155.09°W (Elev. 0 ft)
Last Update:
6:01 am HST Sep 6, 2026
Forecast Valid:
11am HST Sep 6, 2026-6pm HST Sep 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation