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OʻAHU · WINDWARD · PUNALUʻU

Punaluʻu Beach Park (Oʻahu)

Windward Oʻahu's Punaluʻu Beach Park — also called Chings, BWTF community-tested

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
Punaluʻu Stream Beach (Chings)
Last sample 2026-08-23 · view full report →
591 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 tested · biweekly

Punaluʻu Beach Park on Oʻahu's windward coast — known locally as Chings — is the small reef-protected beach in Punaluʻu town. Often confused with the famous black-sand Punaluʻu on the Big Island. 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
Reef-protected, multiple stream inputs

Punaluʻu Beach Park sits on Oʻahu's windward coast behind a fringing reef. Streams in the surrounding watershed can carry runoff into the coastal water after rain.

This is the Oʻahu beach locally called Chings, not the black-sand Punaluʻu on the Big Island. Check this site's dated community sample and current DOH advisories separately; a past result does not establish current conditions.

🌧️
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 Punaluʻu Beach Park (Oʻahu). 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 Oʻahu chapter.

BWTF samples Punaluʻu Beach Park (Oʻahu) biweekly 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

Sandy entry from the central park area. The reef-protected lagoon is shallow at low tide. The nickname "Chings" refers to the old Ching's Punaluʻu Store still operating across the highway. Avoid stream-mouth zones at the ends of the bay.

When It's at Its Best

Calm trade-wind days. Mornings are quietest. Local families come on weekends. Stop at Ching's Store for a malasada or shave ice — institution since 1900.

Getting There

Off Kamehameha Highway in Punaluʻu town, windward Oʻahu. About 45 minutes from Honolulu via Likelike or H-3. Roadside parking + small park lot. Restrooms on-site.

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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