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Calm, clear water and small lava islets at Carlsmith Beach Park in Hilo

Swimming Beaches · Hilo

Carlsmith Beach Park (Four Mile)

Carlsmith has no sandy shoreline. Instead, a grassy lawn runs down to calm, protected water that's good for swimming and snorkeling. There are restrooms, showers, picnic tables, and a pavilion.

Why we love it

Some of Hilo's calmest swimming water, with a lawn for your towel and no sand in your bag.

What to expect

There’s no sand at Carlsmith. A mowed lawn dotted with picnic tables runs right down to the water, so bring a chair or towel. Lava rock and a reef wall enclose most of the inner lagoon, and the water stays calm on all but the windiest days. For this lava coast, the bottom is unusually smooth and sandy. A few cooler pockets mark spots where fresh water seeps up. Turtles feed along the reef edge and are easiest to spot when the surface is glassy. Richardson, a short drive east, is the better pick if you want a beach to sit on.

Know before you go

Parking
Park next door at Kealoha Beach Park, about a 100-foot walk away. Both this park and nearby Richardson get very busy on weekends.
Lifeguards
The state ocean-safety site and a 2026 local guide list lifeguards daily, 9:30 a.m.–4:45 p.m., but older Go Hawaii listings say weekends and holidays only. Check that the tower is staffed when you arrive.
Getting in
You enter the water over rock, not sand, so water shoes help.
Water conditions
Big east-side swells can change conditions, so check HIOCEANSAFETY.COM’s surf report and hazard signs first.
Honu
Turtles are regulars in the lagoon. Stay at least 10 feet away, in the water and on land.
Facilities
There are restrooms, a shower, drinking water, picnic tables, and a pavilion.
swimmingfamiliessnorkeling

Photo: dronepicr via Wikimedia Commons · CC BY 2.0