Calm family swimming — Water quality & conditions
📍 Banyan Drive, Hilo, Big Island — Protected lagoon for families
Baby Beach Hilo sits along scenic Banyan Drive, protected by a natural lava rock breakwater that creates a calm, shallow lagoon perfect for families with young children. The protected setting limits wave action and makes it one of the safest swimming spots on the island for beginners.
However, Hilo's exceptionally high rainfall — over 130 inches per year — means the surrounding urban watershed frequently sends runoff into coastal waters. The Wailoa River mouth is nearby, and urban drainage from Hilo's streets can affect water quality quickly after storms. Water quality is best on dry days with multiple dry days preceding your visit.
Based on: Urban watershed, high rainfall area, Wailoa River proximity
Hilo averages 10+ rainy days per month. Stay out of Baby Beach for at least 72 hours after any heavy rain. This rule is more important in Hilo than almost anywhere else in Hawaii due to extreme rainfall frequency.
Free Big Island water quality alerts — especially important in rainy Hilo.
No spam. Just safety alerts for your trip.
⚠️ Important Disclaimer
Safe to Swim Hawaii is an independent passion project, not affiliated with the Hawaii Department of Health. Ratings are not real-time measurements.
Always verify with the Hawaii Department of Health Clean Water Branch before swimming.
When in doubt, don't go out. 🤙