7 miles of legendary surf, seasonal swimming, and active bacteria advisories.
The Hawaii Department of Health recommends staying out of the ocean for at least 72 hours after heavy rain. The North Shore receives more rain than Waikiki and has multiple stream outlets. Several beaches have active advisories lasting 12+ days. Always check current conditions before swimming.
Oʻahuʻs North Shore is synonymous with big-wave surfing. From Haleiwa town in the west to Turtle Bay Resort in the east, this 7-mile stretch includes some of the most famous waves in the world. But the experience changes dramatically by season.
North Pacific swells generate waves from 15 to 30+ feet. The "7 Mile Miracle" hosts the Vans Triple Crown of Surfing. Pipeline, Sunset Beach, and Waimea Bay become amphitheaters of raw ocean power. Do not swim at these beaches in winter conditions. The shorebreak alone can cause serious injury. Even experienced swimmers have drowned in winter surf.
The same beaches that are deadly in winter become calm, clear swimming spots in summer. Waimea Bay transforms from a 30-foot wave arena to a calm swimming hole. Sunset Beach becomes swimmable. Sharkʻs Cove and Three Tables offer excellent snorkeling. Water visibility can exceed 50 feet.
Haleiwa Aliʻi Beach Park: In Haleiwa town. Protected harbor area, calmer than open-coast beaches. Near the famous Matsumoto shave ice.
Laniakea (Turtle Beach): Famous for green sea turtles basking on shore. Not a primary swimming beach — the turtle viewing is the draw.
Waimea Bay: Iconic. Giant waves in winter, calm swimming in summer. The rock jumping spot is at the south end.
Pipeline (Ehukai Beach Park): The most famous wave on Earth. Extremely shallow reef. Only for elite surfers in winter. Swimmable in summer.
Sunset Beach: 2-mile stretch. Massive winter surf. Calm summer swimming. Several current bacteria advisories active.
Turtle Bay: Resort at the eastern end. Protected cove for calmer swimming. Golf, horseback riding.
The North Shore has multiple stream outlets that carry agricultural and residential runoff into the ocean. As of the latest data, several beaches have active bacteria advisories that have been in place for 12+ days. The area receives more rainfall than the south shore, which means more frequent contamination events. Check Safe to Swim Hawaii before every beach visit.
Top-rated experiences in the area.
Tours via Viator and GetYourGuide. We may earn a commission at no extra cost to you.
Free alerts when water quality changes.
No spam. Just safety alerts.
100+ beaches across all islands
⚠️ 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. 🤙