Hawaii Ocean Report
Surf forecast, tides, water temperature, and jellyfish warnings — pulled live from NOAA.
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Wave Height
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Water Temp
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Wind
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UV Index
Box Jellyfish Calendar
Box jellyfish typically arrive on south-facing shores 8–10 days after each full moon. The warning window below shows when to use extra caution, especially on Oahu's south shore (Waikiki, Ala Moana, Hanauma Bay) and leeward beaches.
Dates are calculated from the lunar cycle. Check Honolulu Ocean Safety for current advisories.
Ocean Safety
Check Before You Go
Hawaii's ocean conditions change fast. Always check the posted warning signs at the beach. If lifeguards are present, ask them about current conditions before entering the water.
Shore Break
Waves that break directly on the sand can slam you into the bottom. Common at Sandy Beach (Oahu), Big Beach (Maui), and Hapuna Beach (Big Island). If waves are overhead and breaking on shore, stay out.
Rip Currents
If caught in a rip current, don't fight it. Swim parallel to shore until you're out of the pull, then swim back in. Look for channels of choppy, discolored water flowing seaward.
Seasonal Swells
North shores see big surf from November through February. South shores pick up swells in summer (May–September). Conditions that look calm from shore can be dangerous in the water.
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