Koloumbos Beach

Koloumbos Beach is a wild, mostly undeveloped beach of dark volcanic sand and pebbles on Santorini’s northeast coast, about 4 km east of Oia. It is also written as Columbo Beach, Cape Columbo Beach, Kolumbo Beach, or Koloumbo Beach, and takes its name from Cape Koloumbos and the Kolumbo submarine volcano offshore. Choose it for cliffs, space, and quiet water on a calm day, not for beach-club comfort.

There are no lifeguards, showers, or paved paths, and no proper row of sunbeds. At most, a small seasonal cantina may open at one end in summer, so do not count on it. Everything depends on preparation: bring water, food, shade, and sturdy footwear, and know how you will get back before you arrive.

Koloumbos Beach at a Glance

Why Visit Koloumbos Beach?

Koloumbos shows you a side of Santorini that the caldera villages do not. Instead of promenades, umbrellas, and loungers, you get a long, narrow shoreline of dark sand and pebbles, cliffs shaped by wind and salt, and open Aegean views toward Ios and Amorgos. On the Greek National Tourism Organisation’s own list of Santorini beaches, Koloumbos and neighboring Baxedes are the picks for tranquility.

The beach is close enough to Oia to pair with a village visit, yet it feels far removed from the sunset crowds. That contrast is the reason to come. If you want sunbeds, beach bars, and easy parking, compare the organized options in our guide to the best beaches in Santorini instead.

Best reason to go: Koloumbos is one of the few Santorini beaches that has stayed largely free of infrastructure, which makes it the island’s best choice for space and silence near Oia.

What Koloumbos Beach Is Like

The cliffs set the tone. They rise almost vertically behind the beach, and the dark sand and pebbles give it a far moodier look than Santorini’s whitewashed villages. The water is clear, but the beach faces north and east, so it takes the full force of the north wind. On a still morning it can look like a lake; on a windy afternoon, waves and currents can make it unsuitable for swimming.

Shade is scarce. There are no umbrellas, but later in the day the rock on the right-hand side of the beach (as you face the sea) casts a shadow over part of the shore. At that same end, a small cape and rocks lead toward a sea cave, which is the main draw for snorkelers on calm days.

Koloumbos also has a long-standing reputation as Santorini’s naturist-friendly beach, with the far end of the beach unofficially clothing-optional. Nudity is tolerated there by custom rather than signposted, so pick a discreet spot away from the main access point and respect visitors who stay clothed.

Best Things to Do at Koloumbos Beach

Swim when the sea is calm

Treat swimming as a calm-weather plan, not a given. Look at the water before you go in: if waves are breaking hard or the wind is pushing across the bay, stay on the shore. Swim with a companion, stay within your ability, and remember that nobody is watching the water.

Snorkel near the cape and sea cave

The rocks and small cape at the end of the beach make Koloumbos one of the better snorkeling spots on the north coast. Bring your own mask and fins, since there is nowhere to rent them. Only swim toward the cave in flat conditions, and never go alone.

Walk the shoreline and take photos

Walk away from the access path and you usually have long stretches of beach to yourself. The dark sand, eroded cliffs, and open sea work well for photography, especially in soft morning or late-afternoon light. Keep back from the base of the cliffs while you shoot.

Hike down on Santorini Trail 10

If you enjoy walking, the waymarked Santorini Trail 10 from Finikia to Kolumbos runs downhill from the caldera ridge near Oia to the east coast. It passes through a traditional settlement and abandoned farmland. Outdooractive rates it easy at about 5.4 km and 2 hours 20 minutes, with 34 m of ascent and 216 m of descent. There is almost no shade, so start early and carry plenty of water.

Pair it with Oia or Baxedes

A beach morning at Koloumbos followed by an evening in Oia makes a good half-day plan. Oia has the food, shops, and caldera views that the beach lacks; see our guide to the best things to do in Oia to plan the second half. Baxedes Beach is right next door, about a 10-minute walk along the coast, if you want to see both beaches in one visit.

The Kolumbo Volcano Offshore

Kolumbo is an active submarine volcano. Its main cone, about 3 km across, lies roughly 7 km off Santorini’s northeast coast, and it is the largest of at least 25 underwater volcanic centers in the area. Its only recorded eruption, in 1650, broke the sea surface. Toxic gases and pyroclastic flows reached Santorini and killed dozens of people (historical accounts put the toll at 60–70) along with many animals. The collapse that followed also sent a tsunami into nearby islands.

Kolumbo made international news again in early 2025. From late January, tens of thousands of earthquakes struck between Santorini, Kolumbo, and Amorgos, peaking with a magnitude 5.2 quake on 10 February 2025 before activity faded from March. A study published in Nature in September 2025 concluded that rising magma triggered the swarm and pointed to a link between the magma reservoirs of Santorini and Kolumbo. Seismologists at the time judged the chance of an eruption to be relatively low, and monitoring around the volcano has since been expanded.

For a beach visit, the practical risks are local: waves, wind, footing, and the cliffs. You cannot see or feel the volcano from the shore, and the beach is not a hot spring. If Greek authorities issue a new seismic advisory, follow the official 112 emergency alerts and any local beach closures.

How to Get to Koloumbos Beach

By car, ATV, or scooter

Driving is the easiest way to reach Koloumbos. From Oia, follow the road toward Baxedes, about 4 km east, and continue along the coast road. There is no official parking lot. Park considerately at the roadside or in the small dirt area near the shore, then take the unpaved path down. Guides describe the walk as anything from short to about 15 minutes, depending on where you leave the car. The path is narrow and loose in places, so wear proper shoes, not flip-flops. In spring, the path is lined with wildflowers.

By taxi or private transfer

A taxi works if you do not want to drive, but arrange your pickup before you head down. Taxis do not wait near the beach, and mobile signal and taxi availability can be patchy in high season. Our Santorini beaches guide puts a taxi from Fira at around €30. Confirm the fare with the driver before you set off. For all the transport options on the island, see how to get around Santorini.

By bus

Do not plan a Koloumbos day around the bus. KTEL Santorini’s fare table does list a Fira–Baxedes journey (15.5 km, €2.20 full fare, per the May 2026 table). However, the operator publishes no separate timetable for Baxedes or Koloumbos, so a listed fare does not prove there is a usable daily departure. If you want to try, call KTEL on +30 22860 25404 or ask at Fira Bus Station for the route, boarding point, and return times. Our Santorini bus schedule covers the main routes.

What to Bring

• Water: more than you think you need, especially in July and August or if you hike in.
• Food: snacks or a packed lunch; the nearest proper meals are in Oia and the nearby villages.
• Shade: a beach umbrella or small tent, plus a hat, sunscreen, and sunglasses.
• Footwear: sturdy sandals or water shoes for the path, hot dark sand, and pebbles.
• Mask and fins: for snorkeling around the rocks and cave on calm days.
• Towel or thick beach mat: the pebbly surface is not groomed.
• Cash: useful if the seasonal cantina is open.
• Trash bag: there are no bins to rely on, so pack out everything you bring.

Safety and Etiquette

Koloumbos is not a difficult beach, but it is an isolated one. It has no lifeguards, no reliable facilities, uneven ground, and sea conditions that change with the wind. Check the wind forecast before you leave, and go with at least one other person.

Keep away from the base of the cliffs, and do not climb loose rock. Santorini’s volcanic cliffs are prone to rockfalls. After the 2025 earthquakes, Red Beach was closed following a landslide, and Greece’s earthquake planning chief named Ammoudi and Armeni below Oia among the island’s priority landslide-risk areas. Choose a spot on open sand, well clear of overhangs.

Respect the quiet: keep music off or low, give other groups space, and do not photograph people, particularly in the clothing-optional section. Leave the beach cleaner than you found it.

Best Time to Visit Koloumbos Beach

Visit on a calm morning or late afternoon between late spring and early autumn. Mornings bring the quietest water and the fewest people. Late afternoons bring softer light, lower heat, and the shadow from the rock on the right side of the beach.

In July and August, the Meltemi north wind decides the day. Koloumbos is completely open to it, so on strong-wind days choose a more sheltered beach on the south coast, such as Perissa or Perivolos, and save Koloumbos for a still day.

Nearby Places to Combine With Koloumbos Beach

Staying nearby? Oia is the closest base. Compare areas in our guide on where to stay in Santorini, or see our shortlist of the best hotels in Oia.

Frequently Asked Questions