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OAHU · EAST SIDE

Sandy Beach Park

Water quality status and bacteria risk rating

📍 East Oʻahu, near Hanauma Bay

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. The state of Hawaii is often slow to test beaches and update advisories. Always check the water yourself and avoid brown or murky water.
Moderate-Low Risk 2 / 5

Sandy Beach is a popular bodysurfing beach on Oʻahu's East Side with generally good water quality. Open ocean exposure with strong currents provides decent flushing. There is some potential for runoff from nearby development after rain, but the beach typically tests well under normal conditions.

The primary danger at Sandy Beach is the powerful shorebreak, not bacteria. Sandy Beach is one of the most dangerous beaches in Hawaiʻi for spinal injuries due to waves slamming onto shallow, hard-packed sand. Water quality is a secondary concern here — the physical risk from waves is far greater.

Based on: DOH beach monitoring, open ocean exposure, some nearby development runoff potential

⚠️ The 72-Hour Rain Rule

The Department of Health recommends staying out of the ocean for at least 72 hours after heavy rain. Sandy Beach has open ocean exposure which helps with flushing, but nearby development can contribute runoff after storms. Always check the water visually before entering.

Sandy Beach Area — Nearby Accommodations
🏨 Residential Area
No major hotels nearby — closest are in Waikiki (25 min drive)
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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. “No DOH Alerts” means no advisory is currently posted — it does not mean the water was tested and found safe. DOH only monitors a fraction of Hawaii’s beaches, and some areas have no regular testing at all.

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.

This site is a work in progress and we want to make it better. If you notice something that isn't working right, have a suggestion, or want to share local knowledge about a beach, please reach out.

When in doubt, don't go out. 🤙

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