What to know before you go
Secret Beach (Kauapea Beach) is a wide, dramatic stretch of sand on Kauaʻi’s north shore near Kilauea. The beach extends roughly half a mile below towering red-dirt cliffs, with Kilauea Lighthouse visible on the headland to the east. The setting is spectacular, and the beach’s reputation as a secluded paradise draws many visitors.
The beach faces directly north with no offshore reef or island providing protection. Open ocean energy hits the shore at full strength. The sand is coarse and the beach face is steep, creating powerful shore break and backwash. A waterfall drops from the cliff face at the western end of the beach during and after rain, creating a photogenic but deceptive scene that makes the beach look more inviting than it is.
The beach is clothing-optional at the far western end, which adds to its popularity. However, the beauty and seclusion mask genuine danger. The currents here are strong every single day, and the absence of any rescue infrastructure means that a swimming emergency is likely to end tragically.
Massive north swells can completely inundate the beach, with waves washing up to the base of the cliffs. The entire sand area may be underwater during the highest tides combined with the largest swells. Access can be cut off if the trail becomes flooded at the base. Even on moderate winter days, the currents and shore break are extremely hazardous. Water temperatures drop to 74–76°F. This is the most dangerous season at an already-dangerous beach.
The beach widens significantly as sand accumulates without winter swell erosion. The waterfall is most active after rain, and the setting is at its most photogenic. Water temperatures reach 78–80°F. However, even in the calmest summer conditions, the currents remain dangerous and swimming is not advised. Enjoy the beach for sunbathing, photography, and the dramatic scenery. Stay out of the water.
| Lifeguards | No |
| Nearest Hospital | Wilcox Medical Center (20 mi) |
| Cell Coverage | Poor |
| Emergency | Call 911 — Ocean Safety: (808) 723-8170 |
Everyone — do not swim: Secret Beach is not a swimming beach under any conditions. The currents, shore break, and complete absence of rescue capability make water entry extremely dangerous year-round. Multiple drownings have occurred at this beach. Enjoy the scenery from the dry sand.
Visitors on the access trail: Wear shoes with good grip. The trail is steep and muddy even in dry weather. After rain, it becomes dangerously slippery. Take your time going down and save energy for the climb back up. Do not attempt the trail in darkness.
Anyone sitting near the cliff base: Rock falls from the unstable cliff are an ongoing hazard. Large sections have collapsed without warning. Keep well away from the cliff face — at least 50 feet. Do not explore the caves or overhangs at the base of the cliff.
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 Secret Beach (Kauapea) and every beach in Hawaiʻi.
Extremely dangerous currents — not a swimming beach. Steep, muddy access trail. No lifeguards. Cliff above beach is unstable.
No. Nearest hospital: Wilcox Medical Center (20 mi). Cell phone coverage: Poor.
Winter: Massive waves completely cover the beach in large swells. Summer: Still dangerous currents, the wide beach is best enjoyed for sunbathing only
Do not swim at this beach under any conditions. The currents are strong year-round. The trail down is steep, muddy, and has caused injuries. The cliff face is unstable.
Tours listed via Viator and GetYourGuide. Safe to Swim Hawaii may earn a commission if you book, at no extra cost to you.
Free alerts when advisories change at your beach.
⚠️ 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.
This site does not recommend or advise anyone to swim at any beach. We share government 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, donʻt go out. 🤙