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OAHU · WEST / NORTH SHORE

Kaʻena Point

Water quality status and bacteria risk rating

📍 Westernmost tip of Oʻahu — Wildlife Sanctuary

DANGEROUS OCEAN CONDITIONS
Kaʻena Point has extremely strong currents where the North Shore and West Side meet. Large waves can surge over rocks without warning. There are no lifeguards, no sandy beach, and the remote location makes rescue extremely difficult. Do not enter the water.
Checking live advisories…
If It Looks Brown, Don't Swim
Never enter the ocean when the water appears brown or murky, even if no advisory is posted. Hawaii is often slow to test beaches and update advisories — not every beach is monitored. After heavy rain, wait at least 72 hours and until the water clears before swimming.
Learn more about brown water advisories →
Historical Bacteria Risk
⚠ Historical rating — this is based on long-term testing data, not current conditions. Always check the water yourself and avoid brown or murky water.
Low Bacteria Risk 1 / 5

Kaʻena Point has low bacteria risk due to its extremely remote location with zero nearby development or sewage infrastructure. The area is a Natural Area Reserve and wildlife sanctuary. There are no streams or runoff sources feeding into the ocean here.

However, the ocean here is extremely dangerous. Converging currents from the North Shore and West Side create powerful, unpredictable conditions. Large waves can surge over rocky shorelines without warning. There is no sandy beach. Multiple people have been swept off the rocks at Kaʻena Point. Do not enter the water. Enjoy the wildlife and scenery from a safe distance.

Based on: Extremely remote location, no development, no stream inputs, converging ocean currents

⚠️ The 72-Hour Rain Rule

The Department of Health recommends staying out of the ocean for at least 72 hours after heavy rain. While Kaʻena Point has virtually no runoff sources, the ocean conditions here are dangerous regardless of water quality. Do not swim at this location.

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⚠️ Important Disclaimer

Safe to Swim Hawaii is an independent passion project — it is not affiliated with the Hawaii Department of Health or any government agency. Water quality ratings on this site are estimates based on publicly available testing data and geographic analysis. They are not real-time measurements and may not reflect current conditions.

Always verify current water quality conditions with the Hawaii Department of Health Clean Water Branch before entering the water. This site is for informational purposes only and should not be the sole basis for any swimming decisions.

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