ʻAnaehoʻomalu Bay (A-Bay) — Water quality & beach conditions
📍 Waikoloa, Kohala Coast, Big Island — Turtle beach, calm bay
ʻAnaehoʻomalu Bay fronts the Waikoloa Beach Marriott Resort and sits in one of Hawaii's driest regions — the leeward Kohala Coast receives less than 10 inches of rain per year. This near-desert climate means virtually no freshwater runoff into the bay, keeping water quality pristine year-round.
The bay is partially protected by a lava point on the north end, creating calm, clear conditions perfect for swimming and snorkeling. Ancient Hawaiian fishponds border the south end of the beach — a beautiful historical feature unique to this location. The resort beach offers consistent, excellent conditions for guests and the public alike.
Based on: Extremely dry Kohala Coast climate, no freshwater runoff, protected bay, open-ocean circulation
Stay out for at least 72 hours after heavy rain. The Kohala Coast is one of Hawaii's driest areas — heavy rain events are extremely rare, making this one of the most reliably clean bays in the state.
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Independent passion project — not affiliated with Hawaii DOH or Marriott. Ratings are not real-time measurements. Verify with Hawaii DOH.
When in doubt, don't go out. 🤙