Hawaii Reef Fish
DOH Brown Water Advisories
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Default tide is for Honolulu Harbor
Click on the ▼ arrow at the top left side of the tide chart banner to select other Hawaii tide locations
Box Jellyfish Days
Box jellyfish arrive in Waikiki approximately 8-11 days after the full moon. In addition to Waikiki, the jellyfish may show up at Hanauma Bay, Waimea Bay and occasionally the Waianae Coast and Windward Coast (Kailua).
1st day of influx is usually on the 8th or 9th day after the full moon, lasting 2 or 3 days. Exact arrival timing and magnitude vary month to month.
Box Jellyfish Calendar
Check with lifeguards if you are unsure about ocean conditions or if you are concerned about jellyfish.
Hawaii Box Jellyfish Video (Alatina alata)
Video by WSC Member Pat Goding
DOH Clean Water Advisories