Data-driven beach plan with water quality checks
| Duration | 3 day |
| Island | Big Island |
| Beaches | 4 beaches covered |
| Best For | All experience levels |
The Big Island’s finest white sand beach on the dry Kohala Coast. Half a mile of wide sand with clear, turquoise water. The sandy bottom slopes gently, making it excellent for swimming when waves are modest. Lifeguards on duty. In winter, check the surf forecast — the shore break can be dangerously powerful during large west swells. $5 state park vehicle entry.
Mauna Kea Beach (Kaunaʻoa Bay) is a sheltered crescent that stays calmer than Hapuna during moderate surf. Limited to 30 public parking spots — arrive before 8 AM. Alternatively, Spencer Beach Park just to the south has a protected swimming area behind a reef, picnic facilities, and is rarely crowded. Spencer is one of the calmest swimming spots on the Kohala Coast and excellent for families with young children.
Spend your last beach day at A-Bay (Anaehoʻomalu Bay), snorkeling the lava rock edges where sea turtles feed. The palm-fringed beach has a relaxed atmosphere with a food stand and gear rentals. Time your visit to include sunset. If you have energy, the nearby 49 Black Sand Beach (within the Mauna Lani resort) is a small, unique volcanic sand beach worth a quick visit.
Water quality note: Check the Hapuna Beach page for conditions. Kohala Coast beaches have rare advisories due to dry climate, but verify after Kona storms.
| Hapuna to Mauna Kea | 5 min north on Queen Kaʻahumanu Hwy |
| Hapuna to A-Bay | 15 min south on Queen Kaʻahumanu Hwy |
| Best schedule | Day 1: Hapuna 7–11 AM. Day 2: Mauna Kea 7 AM (early for parking), Spencer PM. Day 3: A-Bay 9 AM through sunset |
| From Kona airport | 30 min to Hapuna, 35 min to Mauna Kea, 20 min to A-Bay |
| Big Island tip | The island is huge. Do NOT try to combine Kohala Coast beaches with Hilo-side attractions in one day. The drive from Kona to Hilo is 2+ hours each way |
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. 🤙