What to know before you go
Surge from north swells enters the bay, making snorkeling dangerous
Calm water excellent for snorkeling but bacteria levels consistently exceed safe thresholds
| Lifeguards | Yes |
| Nearest Hospital | Kona Community Hospital (5 mi) |
| Cell Coverage | Excellent |
| Emergency | Call 911 — Ocean Safety: (808) 723-8170 |
Anyone with open wounds, compromised immune systems, or young children should avoid entering this water. Despite being a popular snorkeling spot, the bacteria data is alarming.
After heavy rain, bacteria and pollutants from runoff contaminate coastal waters. Wait at least 72 hours after heavy rain and until the water clears before entering. This applies to Kahaluʻu Beach and every beach in Hawaiʻi.
92% bacteria test failure rate — worst in state. Shallow reef — coral cuts common. Surge during high surf. Cesspool contamination.
Yes. Nearest hospital: Kona Community Hospital (5 mi). Cell phone coverage: Excellent.
Winter: Surge from north swells enters the bay, making snorkeling dangerous. Summer: Calm water excellent for snorkeling but bacteria levels consistently exceed safe thresholds
Anyone with open wounds, compromised immune systems, or young children should avoid entering this water. Despite being a popular snorkeling spot, the bacteria data is alarming.
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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, any entity mentioned on this page, or any government agency or hotel brand. 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.
When in doubt, donʻt go out. 🤙