Kiholo Bay
Wild lava lagoon where sea turtles rule the shore
About
Kiholo Bay sits on the Big Island's sun-scorched Kohala Coast, a raw stretch of lava where a brackish freshwater spring feeds a lagoon of improbable turquoise water. A natural lava berm divides that calm lagoon from the open Pacific, creating two distinct worlds in one small bay. The shoreline is volcanic — black lava rock rather than sand — and the water shifts from glassy lagoon-clear to deep ocean blue within metres. Green sea turtles gather here in unusually high numbers, resting on the lava shelves and drifting through the shallows. Protected as a state park reserve, the bay stays quiet and largely unchanged.
How to get there
Kiholo Bay has no road access and no parking — reach it one of two ways. On foot, pull off Highway 19 north of Kona and follow the 1.5-mile trail across sharp lava fields; allow about 30 minutes and wear closed-toe shoes. By water, kayak or arrive by small boat from offshore in roughly 20 minutes. The reserve is open daily from sunrise to sunset.
Who it's for
For couples
The remote, quiet atmosphere and the spectacle of sea turtles drifting through turquoise water make this a genuinely special detour for couples willing to hike in together and leave the outside world behind.
For families
Older children who can handle a 1.5-mile lava hike in closed-toe shoes will find the turtle-watching extraordinary, but the rough trail and sharp rock make this unsuitable for toddlers, strollers, or anyone who struggles on uneven terrain.
Our take
Feet in the sand, eyes on the screen
Kiholo Bay demands effort and rewards it honestly. The lava trail is not a casual stroll — sharp rock, zero shade, and no water source mean underprepared visitors turn back or get into trouble. Go prepared and you'll reach one of the most ecologically intact spots on the Big Island's coast. Swimming is moderate here, but the real draw is watching green sea turtles move through turquoise lagoon water against a backdrop of black lava — a combination that exists almost nowhere else. The state park reserve protection has kept it quiet and wild. No vendors, no facilities, no signal. That's the point.
What to do
The bay itself is the main event — snorkelling the turquoise lagoon alongside green sea turtles is the reason most visitors make the trek. The adjacent Kīholo State Park Reserve, rated 4.6/5 and just 2.2km away, extends the protected coastline and rewards those who explore further. For a contrast in beach character, Manini'owali Beach (Kua Bay) offers compact white-sand swimming about 8km south, while Mahai'ula Beach adds a long arc of golden sand another 2km beyond that, both within Kekaha Kai State Park. History lovers can continue to Kaloko-Honokōhau National Historical Park, 22km south, for preserved Hawaiian fishponds and coastal ruins.
Stand on the lava berm for the defining frame: turquoise lagoon water meeting black volcanic rock with open Pacific behind you.
The lagoon's freshwater spring upwellings create visible shimmer patterns in the water that photograph beautifully in direct midday light. Patient photographers who respect the 10-foot turtle rule can capture green sea turtles resting on dark lava shelves — shoot in the early morning when the light is soft and the animals are undisturbed.
Where to eat
There are no restaurants, cafés, or food vendors at Kiholo Bay — none. Pack everything you need before you leave Kona, and carry it back out with you when you go.
Where to stay
There is no accommodation at or near Kiholo Bay itself. The nearest practical base is Kona, roughly 18km south, where the full range of options exists close to Ellison Onizuka Kona International Airport (KOA).
Photography
The best shot is from the lava berm at golden hour — turquoise lagoon water on one side, dark volcanic rock on the other, with a turtle resting in the foreground if you're patient and respectful of the 10-foot rule. Early morning light is cleaner and the lagoon surface is calmer before the trade winds pick up.
Good to know
Federal law prohibits touching or approaching sea turtles — stay at least 10 feet away at all times, no exceptions. The lava trail is rough and unshaded: bring plenty of water, sun protection, and sturdy closed-toe shoes or the rock will shred sandals. State park reserve rules apply — no camping, no fires, and pack out every piece of trash you bring in. The brackish lagoon water looks inviting but is not potable, so carry all the drinking water you need from the start. True digital-detox spot — bring offline books, the cell signal fades and there's nowhere to plug in a laptop.
Map
Nearby places
Kiholo Bay
Kīholo State Park Reserve
Manini'owali Beach (Kua Bay)
Mahai'ula Beach
Kaloko-Honokōhau National Historical Park
Things to see around North Kona
Manini'owali Beach (Kua Bay)
Compact white-sand pocket beach in Kekaha Kai State Park with paved access.
Mahai'ula Beach
Long arc of golden sand in Kekaha Kai State Park accessible via rough lava road.
Kaloko-Honokōhau National Historical Park
Preserved Hawaiian fishponds, heiau, and coastal settlement.
Frequently asked
The information on this page is provided for guidance only and may evolve. Access conditions, safety and infrastructure can change without notice. Always check official sources before traveling.
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Photo credits
Sources and licenses for the photos shown above.
- Photo 1 — dret · source · CC BY-SA 2.0
- Photo 2 — dret · source · CC BY-SA 2.0
- Photo 3 — Heather Harvey · source · CC BY-SA 2.0
- Photo 4 — Dw.steven · source · CC BY-SA 3.0