Carlsmith Beach Park

Carlsmith Beach Park is a Hilo lagoon park with reef-buffered water, lava-rock edges, grassy picnic space, freshwater spring areas and honu near the shoreline.

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Carlsmith Beach Park, Big Island

Carlsmith Beach Park is one of the better swimming spots in the Hilo area. This side of the Big Island is mainly made up of lava rocks, but Carlsmith Beach Park has a sandy ocean bottom.

There is no sandy beach, but it’s a good place for swimming and snorkeling because the nearshore waters are protected by a reef. The entire area consists of several relatively large lagoons. Freshwater bubbles up from the bottom in several areas, so there are some cooler spots throughout the lagoons.

Sea turtles can often be seen here. They are used to people in the water and sometimes swim close to snorkelers. Keep a respectful distance and do not touch, chase or disturb them. The beach park has a spacious grassy area with trees, so there is plenty of room for a picnic.

Key Features

Hilo lagoon park along Kalanianaole Avenue
Reef-buffered lagoons shape the nearshore area
No broad sandy beach; lava rocks and grass frame the shoreline
Freshwater spring areas create cooler water pockets
Honu are often seen near the shore and lagoons
Grassy park space gives the shoreline a relaxed local feel
Lava-rock edges can be uneven underfoot
Parking can fill during busy Hilo beach periods
Located in the Keaukaha shoreline area east of downtown Hilo
Visitors should keep distance from honu and watch conditions around the lagoons

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Frequently Asked Questions

How much time should visitors allow?

Many visitors allow 1 to 2 hours, especially if they want time for the lagoons, grassy picnic areas and a slower shoreline walk.

Why does the water feel cool in some spots?

Freshwater springs bubble up through parts of the lagoon system, creating cooler patches that mix with the warmer ocean water.

Is there a wide sandy beach here?

No. Carlsmith is more of a lagoon and lava-rock shoreline park, with grassy areas behind the water rather than a broad sandy beach.

When is parking easier?

Parking is usually easier earlier in the day. The lot can fill during weekends, holidays and busy afternoon periods.

How should visitors behave around honu?

Give honu plenty of room, never touch or chase them, and avoid blocking their path between the water and resting areas.