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KAUAʻI · NORTH SHORE

Moloaʻa Beach

Water quality status and bacteria risk rating

📍 Remote North Shore, between Anahola & Kilauea, Kauaʻi

Checking live advisories…
Remote Beach — Stream Mouth Present
Moloaʻa Stream enters the ocean at the north end of the beach. After rain, avoid swimming near the stream mouth. No lifeguards or facilities — plan accordingly.
Hawaii brown water advisory guide →
Historical Bacteria Risk
⚠ Historical rating — based on long-term data, not current conditions. Always check for brown water before entering.
Moderate Risk 3 / 5

Moloaʻa Beach earns a moderate bacteria risk rating primarily due to Moloaʻa Stream and the high rainfall on Kauaiʻs North Shore. The surrounding valley can receive 60+ inches of rain per year, making runoff a significant factor after any rainfall event.

The beach itself is otherwise pristine — no development, no wastewater infrastructure, and no crowds. During extended dry periods, water quality at the main beach area (away from the stream mouth) is generally very good. The remote location means DOH does not regularly monitor this beach, so visual inspection is especially important here.

Based on: Stream mouth present, high North Shore rainfall, no DOH regular monitoring, no development offset

⚠️ The 72-Hour Rain Rule

North Shore Kauai is one of the wettest places on Earth. Wait at least 72 hours after any rainfall before swimming at Moloaʻa. Even light rain can turn the stream brown and push bacteria into the bay. The water often visibly discolors near the stream mouth after rain — if you see brown water, stay out.

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⚠️ Important Disclaimer

Safe to Swim Hawaii is an independent passion project — not affiliated with the Hawaii Department of Health. Ratings are estimates. Not real-time measurements.

Always verify with the Hawaii DOH Clean Water Branch before swimming.

When in doubt, don't go out. 🤙

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