Data-driven beach plan with water quality checks
| Duration | 2 week |
| Island | Big Island |
| Beaches | 10 beaches covered |
| Best For | All experience levels |
Two weeks lets you revisit these neighboring beaches on different mornings. Hapuna is the wide, open crescent with bodyboarding shore break. Mauna Kea (Kaunaʻoa Bay) is the quieter, more sheltered cove with green sea turtles at the rocky points. Only 30 public passes daily at the Mauna Kea Hotel gate (7 AM). The Ala Kahakai coastal trail connects them in a 15-minute walk.
A-Bay offers the full resort experience — calm water, gear rentals, food nearby, free parking. Kua Bay is the wild pocket beach with brilliant sand against black lava. Use the two-week window to hit Kua Bay on a calm summer morning and save A-Bay for windier afternoons when its sheltered water stays flat.
The calmest swimming on the Kohala Coast, protected by an offshore reef. Ideal for slow days — bring a book, use the picnic pavilions, and let kids play in the shallow water. Below the historic Puʻukoholā Heiau. Parking lot rarely fills.
The iconic black sand beach on the Kaʻū coast. Sea turtles bask on the dark sand daily. The water has strong currents — this is a look-and-photograph beach, not a swimming beach. Combine with Hawaiʻi Volcanoes National Park (30 min further south) for a full-day excursion.
Black sand beach with natural lava tide pools and turtle sightings in the shallows. The Hilo side gets significantly more rainfall than Kona — check conditions and plan for a drier morning. Lifeguards on weekends, free parking. With two weeks, you can wait for clear Hilo weather rather than forcing a rainy visit.
| Rental car tip | Two-week rates are significantly cheaper per day than daily rentals. The Big Island has limited public transit — a car is essential |
| Kohala Coast beaches | All within 30 min of Kona. Hapuna $5 parking. Mauna Kea 30 passes at 7 AM. A-Bay and Spencer free |
| Kua Bay | 15 min north of Kona. Gates 8 AM–7 PM. No services — pack everything |
| Punaluʻu day trip | 1.5–2 hours south via Hwy 11. Add Volcanoes NP for a full day. Free parking at both |
| Richardson day trip | 2 hours via Saddle Rd. Bring a rain jacket — Hilo gets 130+ inches per year |
After heavy rain, wait at least 72 hours before entering the ocean. Check each beach’s water quality page for live advisory status.
5-7 days minimum — the Big Island is huge (4,028 sq mi)
Start on the Kohala Coast (resorts), then Kona, Volcano, Hilo, and back. Do not underestimate driving distances.
Rain alternatives on Big Island: Volcanoes National Park, Hilo farmers market, Kona coffee farms, Imiloa Astronomy Center. Also check our brown water advisory guide — avoid the ocean for 72 hours after heavy rain.
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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. 🤙