Best Black Sand Beaches
Black sand beaches form where lava has met the sea — either from ancient eruptions whose basalt has eroded into fine particles over thousands of years, or from more recent flows that entered the ocean and shattered into glassy fragments on contact with cold water. The colouring ranges from deep charcoal to gunmetal grey to an almost blue-black in direct sunlight. These beaches are among the most visually striking in the world: the contrast between black sand, white surf, and green cliffs or blue sky is startling in a way that conventional white-sand beaches are not.
1. Reynisfjara, Iceland
Reynisfjara near the village of Vik in southern Iceland is widely considered the most dramatic black sand beach in the world. The beach sits beneath the Reynisfjall cliffs and is flanked by basalt sea stacks, the Reynisdrangar, which rise from the surf in columnar formations. The sand is composed of crushed basalt from ancient volcanic activity. Reynisfjara is also one of the most dangerous beaches in the world for casual visitors: the waves arrive with no warning as sneaker waves from the North Atlantic and have killed multiple tourists who stood too close to the waterline. A posted warning system with safe zones is maintained, but the ocean here demands respect. Karekare Beach in New Zealand has similar basalt-derived black sand in a more enclosed valley setting.
2. Punaluu Black Sand Beach, Hawaii, USA
Punaluu on Hawaii's Big Island is formed by lava flows from Kilauea and Mauna Loa volcanoes flowing into the ocean and shattering into black sand. The beach is continuously replenished by ongoing volcanic activity on the island — in some years, fresh lava flows extend the island's coastline nearby. Punaluu is also a resting site for Hawaiian green sea turtles (honu), which haul out on the black sand in numbers high enough to make turtle encounters essentially guaranteed on most visits. Approaching or touching the turtles is prohibited under the Endangered Species Act; rangers enforce the distance rules actively.
3. Perissa and Perivolos, Santorini, Greece
Santorini's famous volcanic caldera created the island's distinctive topography, and the south coast's beaches — Perissa, Perivolos, and Agios Georgios — are covered in fine black and dark grey volcanic sand from the island's eruptions. The sand absorbs heat rapidly and becomes very hot underfoot in summer midday; sandals are not optional. Perissa Beach has a long strip of beach bar and sunlounger infrastructure with the Mesa Vouno cliff rising directly behind. The dark sand against the clear blue Aegean water and brilliant white sun umbrellas creates the visual that dominates Santorini beach photography.
4. Karekare, New Zealand
Karekare on Auckland's Waitakere coast is reached by a narrow road through dense Waitakere Ranges bush. The beach is broad, black-sanded, and backed by steep forested cliffs. It was used as the filming location for the opening scenes of The Piano (1993) and retains a wild, remote character despite being less than an hour from central Auckland. Swimming is hazardous due to strong rip currents; Surf Life Saving patrols operate on summer weekends only. The black sand comes from basalt eroded from the Waitakere Ranges. Karekare is accessible on the map database under New Zealand.
5. Vík, Iceland
The village of Vik i Myrdal is the southernmost village in Iceland and sits above a black sand beach that extends for kilometres in each direction. The beach is less visited than Reynisfjara but equally dramatic — a long, empty sweep of black basalt sand with the Myrdalsjokull glacier visible in the distance and puffin colonies on the Dyrholaey promontory to the west in summer. Unlike Reynisfjara, the Vik beach is calmer in terms of wave action and more suitable for walking. The village itself is one of the few inhabited places in Iceland at risk of volcanic lahars from subglacial eruptions under Katla.
6. Playa Jardín, Tenerife, Spain
Tenerife's north coast near Puerto de la Cruz has several beaches of black volcanic sand. Playa Jardín, designed by artist César Manrique as an integrated landscape of volcanic rock and garden planting, is the most designed and maintained. The black sand beach is relatively sheltered and swimmable, unlike many of Tenerife's exposed north-coast shores. The volcanic landscape and tropical plantings create an unusual aesthetic quite different from Iceland's stark drama. It is a good introduction to black sand beaches for those who want infrastructure alongside the volcanic scenery.
7. Papakolea Green Sand Beach, Hawaii, USA
Papakolea, near South Point on the Big Island, is technically an olivine sand beach — the green colouring comes from the mineral olivine rather than black basalt — but it exists alongside the same volcanic geography that produces black sand beaches and is often discussed alongside them. The 3-mile walk from the trailhead (or a shuttle) deters casual visitors, keeping numbers lower than Punaluu. The green sand is unusual enough to merit the mention: it is one of only four green sand beaches in the world.
8. Etang-Salé, Réunion
Réunion in the Indian Ocean is a volcanic island whose beaches include Etang-Salé, a beach of fine black volcanic sand shaded by filao trees. The beach is relatively calm and swimmable within its reef-protected section, which distinguishes it from many of Réunion's exposed south coast beaches. The island's hiking in the caldera of Piton de la Fournaise volcano is a draw in its own right; combining the volcano with the black sand beach on the same trip is possible in a day.
What to know about black sand beaches
Black sand absorbs solar radiation more efficiently than white sand, becoming significantly hotter underfoot at midday. Foot protection is advisable on any black sand beach in direct sun. The same volcanic rock composition that makes sand black also tends to create rougher, sharper-edged sand particles than quartz-based white sand — some people find the texture less comfortable for lying directly on.
At actively volcanic locations like the Big Island of Hawaii, new beach formation can be observed during flow events, but new lava beaches are composed of sharp, glassy fragments that become fine sand only after years of wave action. They are not safe to walk on barefoot.
Photography on black sand
The visual contrast of black sand with the sea is exceptional in low-angle morning and evening light. The sand's dark surface reduces the reflected light that washes out colour in photographs taken at midday on white sand beaches; black sand beaches photograph well in a wider range of lighting conditions. Wet sand at the waterline reflects the sky and the surrounding landscape in ways that white sand does not, producing mirror effects that are particularly striking when dramatic cliffs or volcanic formations frame the beach.
At Diamond Beach in Iceland, the combination of translucent blue-white ice on jet black sand is the most dramatic colour contrast of any beach in the world and can be photographed effectively even in flat overcast light, which is the most common condition.
Explore on the map
Open the map to find volcanic beaches near active volcanic zones in Iceland, Hawaii, the Canary Islands, and the Pacific.