Richardson Ocean Park is a small county beach park about four miles east of downtown Hilo on Kalanianaole Avenue, fronted by a black-sand beach and sheltered by a natural lava breakwater offshore. That breakwater is the whole story: it knocks down the open Pacific swell that hits this side of the island and creates the only consistent snorkel beach on the Hilo side of the Big Island. If you're staying in Hilo or Volcano and want to snorkel without driving across the saddle to Kona, Richardson is the answer.
The water is cooler than the Kona-side beaches (Hilo gets more freshwater inflow), and visibility is moderate rather than the gin-clear conditions Two-Step delivers. But there's a healthy reef, a steady population of green sea turtles that come in to feed and rest, and lifeguards on duty — making Richardson a real beach day, not a consolation prize.
What You'll See
- Honu (green sea turtles) — Multiple turtles haul out on the black sand to rest, especially in the afternoon. The beach has been informally called a turtle nursery for decades. Federal law requires staying at least 10 feet away from any resting turtle, on land or in the water.
- Reef fish — Yellow tang, parrotfish, surgeonfish, butterflyfish, and the occasional eel. Numbers are smaller than at protected districts like Pupukea or Honaunau, but the variety is solid.
- Black sand — Genuine basaltic black sand beach. Hot to the touch on sunny afternoons; bring sandals.
Visibility is moderate by Hawaii standards but plenty for a meaningful snorkel — clearer than the open Hilo coastline because the breakwater also slows the freshwater plume that washes in after rain.
Why Hilo Side and How It Differs from Kona
The Big Island has a clear east-west snorkel divide. The Kona side (Two-Step, Kahaluʻu, Kealakekua) gets the marquee snorkel destinations because the leeward coast has clear water and protected reefs. The Hilo side gets more rain, more freshwater runoff into the ocean, and more open exposure to easterly swell — meaning fewer good snorkel spots.
Richardson is the exception, and the natural lava breakwater is why. If you're already in Hilo for Hawaiʻi Volcanoes National Park, the rain forest, or the Saturday farmers market, you don't need to skip snorkeling — you just need to come here.
Getting There + Parking
From downtown Hilo, drive east on Kalanianaole Avenue for about 10 minutes. Richardson Ocean Park is on the makai (ocean) side, well-signed. Free parking in a paved lot adjacent to the beach.
Avoid the lot late afternoon if you're hoping to find space — locals come after work for the sunset and the lot fills.
Lifeguards and Safety
Richardson has lifeguards on duty during posted hours. The protected swimming area is generally calm, but the breakwater opens to the ocean at one end and the current there can pick up — stay inside the marked snorkel zone.
Standard rules: don't snorkel at dawn or dusk, never turn your back on the ocean, respect any posted advisories. Tsunami evacuation routes are well-marked here (Hilo's history with tsunamis means the signage is comprehensive).
What to Bring
- Mask, snorkel, fins (rental shops in downtown Hilo)
- Reef-safe sunscreen with zinc oxide
- Sandals — the black sand gets hot fast on a sunny day
- A light jacket — Hilo is cooler and rainier than the Kona side; even a "warm" Hilo day is sweater weather by Kona standards
Quick Facts
Cost: Free.
Hours: 7 AM to 7 PM (Hawaiʻi County Parks & Recreation posted hours).
Reservation: None required.
Lifeguard: On duty during posted hours.
Best months: Year-round; the breakwater holds even when open-ocean conditions are rough.
Best time of day: Late morning to early afternoon (warmest, best visibility).
Parking: Free.
Facilities: Restrooms, outdoor showers, picnic tables, lifeguard tower.
Related on Hawaii-Guide.com
Related reading: Hawaiʻi Volcanoes National Park · Hilo · Best Snorkeling on the Big Island · Hawaii Snorkel Finder Quiz
