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MAUI · EAST END · HĀNA AREA

Kōki Beach

The red-sand crescent south of Hāna town, just past Hāmoa — and a BWTF sample point at the rivermouth

Community Water Testing
The Hawai‘i Department of Health does not run routine bacteria-testing here. The readings below come from the Surfrider Foundation’s volunteer Blue Water Task Force, which fills coverage gaps DOH doesn’t reach.
Community Testing · Surfrider BWTF
Kōki Beach Shorebreak
Last sample 2026-03-09 · view full report →
183 MPN/100mL
exceeds BAV
Kōkī Beach at Kaholopo'o Rivermouth
Last sample 2026-03-09 · view full report →
135 MPN/100mL
exceeds BAV
About: Volunteer water-quality monitoring by the Surfrider Foundation's Blue Water Task Force. Method: IDEXX Enterolert (MPN/100mL). Threshold: 130 MPN/100mL Beach Action Value — matches Hawaii DOH. Sampling: monthly (Kauaʻi/Maui), biweekly (Oʻahu).
Source: Surfrider Foundation Blue Water Task Force · Updated 2026-09-14
Water-quality sources
Check the dated sample
BWTF community testing

Kōki Beach is the red-and-black-sand crescent just past Hāmoa on the East Maui coast, framed by ʻĀlau Island offshore. Check the Community Water Testing section for the sample date, result and full Surfrider report. A sample describes the water collected at that place and time; it does not establish today's water quality. Check the live DOH status above separately.

Why the Readings Run the Way They Do
Rivermouth + powerful shorebreak combine

Kōki Beach sits at the mouth of Kaholopo'o Stream, which drains the windward valleys above Hāna. Runoff from the watershed can reach the shoreline through the stream.

The stream mouth and powerful shorebreak are separate considerations from a dated bacteria sample. Read the collection date and linked Surfrider report for the sample, and check current DOH advisories separately.

🌧️
After Rain — Wait Times
Light rain: 72 hours minimum, then visually verify the water has cleared.
Moderate rain: 4–7 days.
Storm or Kona low: wait until the water returns to clear blue-green visually. Can take 1–2+ weeks in extreme cases.
Testing Coverage

The Hawaii Department of Health does NOT routinely test Kōki Beach. The community-tested readings on this page come from the Surfrider Foundation Blue Water Task Force, a volunteer-led monitoring program run by the Surfrider Maui chapter.

BWTF samples Kōki Beach monthly using the IDEXX Enterolert method (MPN/100mL), and compares results against the same 130 Beach Action Value DOH uses statewide. See our overview of citizen water-quality testing in Hawaiʻi for the methodology and how BWTF data fits with DOH coverage.

Practical Notes
Where to Enter

Strong shorebreak makes entry hazardous. Locals occasionally surf and bodyboard the break. The stream mouth is at the south end; the community sample does not describe every part of the beach.

When It's at Its Best

Sunrise lights the red sand and ʻĀlau Island view. Hāmoa Beach is a separate nearby beach with its own conditions and water-quality information.

Getting There

Off Haneoʻo Road, the loop just south of Hāna town. About 2 miles from Hāna Bay. Roadside parking is tight on weekends. Combine with Hāmoa, Hāneoʻo Fishpond, and Waioka (Venus Pool) for a complete southern Hāna loop.

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⚠️ Important Disclaimer

Safe to Swim Hawaii is an independent passion project — not affiliated with the Hawaii Department of Health, the Surfrider Foundation, or any government agency. Bacteria readings on this page come from the Surfrider Blue Water Task Force, a volunteer-led monitoring program. Readings are point-in-time samples; conditions change with weather, runoff, and wave patterns. 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 and BWTF directly before entering the water.

This site does not recommend or advise anyone to swim at any beach. We share publicly available data and geographic analysis so you can make your own informed decisions. By using this site you accept full responsibility for your own safety. See our Terms of Use for full details.

When in doubt, don't go out. 🤙

© 2026 Safe to Swim Hawaii · Independent passion project · safetoswimhawaii@gmail.com