Data-driven beach plan with water quality checks
| Duration | 1 day |
| Island | Big Island |
| Beaches | 2 beaches covered |
| Best For | All experience levels |
After heavy rain, wait at least 72 hours before entering the ocean. Check each beachʻs 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.
When in doubt, donʻt go out. 🤙