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

Kahului, Kahului Airport (PHOG)

Lat: 20.89°NLon: 156.44°WElev: 52ft.

Fair

77°F

25°C

Humidity 88%
Wind Speed E 12 mph
Barometer 29.73 in (1007.2 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 7 Sep 3:54 am HST
Extended Forecast for

Haiku HI

Flood Watch September 7, 04:26am until September 8, 06:00pm
High Surf Advisory September 7, 04:26am until September 8, 06:00pm
Click here for hazard details and duration
Flood Watch
High Surf Advisory
  •  
    Flood Watch September 7, 04:26am until September 8, 06:00pm
    High Surf Advisory September 7, 04:26am until September 8, 06:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 75 °F

    Heavy Rain
    and Windy

  • Labor Day

    Labor Day: Frequent showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 83. Windy, with an east wind 23 to 25 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 83 °F

    Heavy Rain
    and Windy

  • Monday Night

    Monday Night: Frequent showers. The rain could be heavy at times. Low around 76. Windy, with an east wind 19 to 24 mph becoming light after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

    Low: 76 °F

    Heavy Rain
    and Windy

  • Tuesday

    Tuesday: Showers likely. Mostly cloudy, with a high near 85. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 85 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely. Mostly cloudy, with a low around 76. East southeast wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 76 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Scattered showers. Partly sunny, with a high near 83. Breezy, with an east wind 14 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 83 °F

    Scattered
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 74. Breezy, with an east wind around 15 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 74 °F

    Showers
    Likely and
    Breezy

  • Thursday

    Thursday: Scattered showers, mainly before noon. Mostly sunny, with a high near 82. East wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

    High: 82 °F

    Scattered
    Showers

Detailed Forecast

Overnight
Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 75. Windy, with an east wind around 23 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Labor Day
Frequent showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 83. Windy, with an east wind 23 to 25 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Monday Night
Frequent showers. The rain could be heavy at times. Low around 76. Windy, with an east wind 19 to 24 mph becoming light after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
Tuesday
Showers likely. Mostly cloudy, with a high near 85. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 76. East southeast wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Scattered showers. Partly sunny, with a high near 83. Breezy, with an east wind 14 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 74. Breezy, with an east wind around 15 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Thursday
Scattered showers, mainly before noon. Mostly sunny, with a high near 82. East wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 73. East wind around 11 mph. Chance of precipitation is 30%.
Friday
Scattered showers, mainly before noon. Mostly sunny, with a high near 81. East wind 11 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Friday Night
Scattered showers. Mostly cloudy, with a low around 73. East wind 9 to 13 mph. Chance of precipitation is 40%.
Saturday
Isolated showers. Mostly sunny, with a high near 82. East wind 11 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Saturday Night
Scattered showers. Mostly cloudy, with a low around 74. East wind 10 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Sunday
Isolated showers. Mostly sunny, with a high near 82. East northeast wind 10 to 13 mph. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Haiku HI
 20.94°N 156.31°W (Elev. 167 ft)
Last Update:
4:01 am HST Sep 7, 2026
Forecast Valid:
4am HST Sep 7, 2026-6pm HST Sep 13, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation