What to know before you go
Sheltered from north swells, calm year-round, slightly cooler water
Warm, calm, ideal for families and young children
| Lifeguards | No |
| Nearest Hospital | Pali Momi Medical Center (16 mi) |
| Cell Coverage | Excellent |
| Emergency | Call 911 — Ocean Safety: (808) 723-8170 |
Toddlers near the rocky edges of lagoons. The algae-covered rocks between lagoons are slippery. No lifeguards — parents must supervise.
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 Ko Olina Lagoons and every beach in Hawaiʻi.
Algae on lagoon walls (slippery). Limited ocean current exchange. Former landfill proximity (EPA remediated). Crowded lagoons during peak season.
No. Nearest hospital: Pali Momi Medical Center (16 mi). Cell phone coverage: Excellent.
Winter: Sheltered from north swells, calm year-round, slightly cooler water. Summer: Warm, calm, ideal for families and young children
Toddlers near the rocky edges of lagoons. The algae-covered rocks between lagoons are slippery. No lifeguards — parents must supervise.
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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. 🤙