Wide view of Punalu'u Black Sand Beach, Kau, Hawaii Island.

North America · Field guide

Punaluʻu Black Sand Beach

Nā‘ālehu · United States

The useful short version

A black volcanic-sand beach on Hawaiʻi Island’s Kaʻū coast, backed by palms and known as a place where Hawaiian green sea turtles may rest on shore.

SandBlackVolcanic basalt sand
WaterOpen-ocean water with rocks and variable currentsNo numerical clarity score assigned
SwimmingOften not ideal; rocks and currents require cautionVerify the day’s local signals
SnorkelingNot recommended as a default activity without current local guidanceQualitative, not a generated score
FamiliesStrong wildlife and water-safety supervision requiredSupervision and conditions still matter
Best monthsNot verifiedUnknown is not replaced with a seasonal guess

Photography as evidence

The character of Punaluʻu Black Sand Beach

Each image is tied to this place and carries a reviewed commercial-use license record.

Black volcanic sand at Punalu'u Black Sand Beach, Hawai'i Island
The black volcanic sand of Punalu'u Beach, Hawai'i Island. Photo: Farragutful / Wikimedia Commons
Black sand and dark lava rocks at the water's edge with a line of coconut palms and a faint rainbow beyond
Looking north-east along Punaluʻu, where coconut palms stand behind the black sand and lava rock. Photo: Famartin / Wikimedia Commons
Two green sea turtles resting on coarse black sand near the edge of the surf
Two green sea turtles resting on the black sand above the surf line. Photo: Robert Linsdell / Wikimedia Commons

Conditions & seasonality

What the year does to the light.

The atlas holds no live feed for weather, water temperature, waves, tides or water quality at Punaluʻu Black Sand Beach, and will not print a believable default in place of one. Two things can be said honestly: the shape of the year at this latitude, and exactly where to check the day itself.

Hours between sunrise and sunset, computed from latitude 19.135 alone. This is astronomy, not weather: no temperature, swell, rainfall or “best month” claim is implied for Punaluʻu Black Sand Beach. Longest around Jun (13h 06m), shortest around Dec (10h 54m) — a 2.2-hour swing across the year.

Before the sand

Access, use & constraints

A practical field is only as strong as its source and verification date.

Access
Road access and parking nearby
Accessibility
Developed access exists; current beach-surface provisions unverified
Parking
Available nearby; current controls not verified
Lifeguards
Not verified
Crowd pattern
Popular road-trip stop
Coast type
Volcanic island coast
Orientation
Southeast-facing
Surfing
Not a primary visitor surf beach

Read before visiting

What changes the decision

Safety context

Never touch or approach resting turtles

Safety context

Do not remove black sand

Safety context

Rocky water entry and currents

Wildlife

Hawaiian green sea turtles may be present

Protection

Protected native wildlife

Geography

19.13530, -155.50489

This marker uses the verified coordinate in the record; no approximate fallback is shown.

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Provenance

Sources behind this profile

Dynamic facts are not implied by these static sources. Retrieval and confidence stay attached to each record.

  1. Punaluʻu Black Sand BeachHawaiʻi Tourism Authority ↗

    Used for beach character and wildlife-respect guidance; never approach or touch resting turtles.

    Verified Secondary · Retrieved 2026-09-01
  2. OpenStreetMap place and coordinate dataOpenStreetMap contributors ↗

    Coordinates checked through the Nominatim service; map data remains attributable to OpenStreetMap contributors.

    Verified Secondary · Retrieved 2026-09-01

Continue by relationship

Similar context, different coast

Related records share geography, sand character or activities. They are not random links.

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Sand
Tan
Water
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Water
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Sand
Pale beige
Water
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MapPhotos