Water quality, conditions, and what to know before you go
The enclosed lagoons do not receive surf. Outside the lagoons, the leeward coast gets occasional west and south swells. Ko Olina is not a surfing destination. Better surf spots are at nearby Makaha or Nanakuli.
No shore break in the lagoons. The man-made barriers create calm, protected water. The outside reef can produce waves but access is limited.
Low bacteria risk on the dry leeward coast. The lagoons have limited natural flushing, so any bacteria tends to linger longer than at open-coast beaches.
The Hawaii Department of Health recommends staying out of the ocean for at least 72 hours after heavy rain. This applies to all ocean activities including surfing. Runoff carries bacteria from land into nearshore waters.
When conditions are clear, Ko Olina Lagoons has great options for surfing. Check the water quality above, then book with confidence.
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Safe to Swim Hawaii provides water quality information based on publicly available DOH data and seasonal patterns. This is not medical or safety advice. Always check current conditions, obey posted signs, and use your own judgment before entering the ocean. Privacy Policy
⚠️ Important Disclaimer
Safe to Swim Hawaii is an independent passion project — not affiliated with the Hawaii Department of Health or any government agency. Water quality ratings 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 DOH Clean Water Branch before entering the water.
When in doubt, don't go out. 🤙