Santorini Port: Cruise to Volcano, Hot Springs & Thirassia

The most memorable part of this six-hour cruise is the chance to walk across Nea Kameni, an active volcanic island where black rock and warm earth make Santorini feel wonderfully strange. Then you return to the boat, swim toward the hot springs, and spend time on Thirassia, a quieter island that gives you a break from Santorini’s busy cliff towns.

I like the clear mix of activity and downtime. You get a real hike, a swim, island food, and a long cruise beneath the cliffs of Oia, Imerovigli, and Fira. I also like the practical touches: helpful guides such as Roula, Yannis, Georgia, and Gianni, an onboard bar, foam pool noodles, and hotel transport when you select that option.

The main drawback is that this is not a soft sightseeing cruise. The volcano path is rocky, Thirassia involves many stairs if you climb to Manolas, and the hot spring stop is short. The water can be more warm than hot, and you must swim from the boat to reach it.

Quick points before you book

• Walk on an active volcano: Nea Kameni offers a short but rugged climb to volcanic craters and wide Caldera views.
• Swim from the boat: At Palea Kameni, you use a foam noodle and swim toward the brownish-yellow thermal water.
• Eat on quiet Thirassia: You have free time for lunch, a village walk, or the steep climb toward Manolas.
• See Santorini from below: The return sailing gives you a fine view of Oia, Imerovigli, and Fira from the sea.
• Bring cash: The volcano entry costs €5 in cash, and the cable car costs €12 each way when needed.
• Expect a full outing: The cruise lasts six hours, with walking, swimming, and several hours on the water.

Why this Caldera cruise is worth considering

Santorini is famous for its white villages perched above the sea, but the island makes more sense when you see the volcanic basin from the water. This cruise takes you into that basin, then stops at three very different places: a volcanic island, a thermal-water cove, and a traditional island village.

At about $41 per person, the price is strong for a six-hour outing that includes the boat, a local guide, commentary, and three stops. You still pay for food, drinks, and the €5 volcano entry, but the core experience covers far more than a simple harbor ride.

I would not compare this with a private yacht charter. The boat can be full, and the day follows a set route. But compared with pricier cruises, this one gives you a broad look at Santorini’s natural side without asking you to pay luxury-cruise rates.

The 4.5 rating from 992 reviews also fits the shape of the experience: the route and staff receive consistently strong praise, while the usual complaints concern time at the hot springs, the hard climbs, and the quality of individual restaurants on Thirassia.

Starting at Fira Old Port

The standard meeting point is the Santo Star Office at Fira Old Port. You meet at 10:15 am for a 10:30 am departure. If you select hotel pickup and drop-off, your transport may leave earlier from Athinios Port at 9:45 am.

Pay close attention to the pickup email. The vehicle may not reach your hotel door if the road is difficult to access, so the operator may give you a nearby walking point instead. If you have not received the details by the day before, contact MTM Travel and confirm the time and place.

Finding the meeting office can take a little care. One booking noted that the location was not marked with a large sign, so allow time to get your bearings at the port. If you are arriving by cable car from Fira, remember that the ride costs €12 each way according to the supplied details. You may also encounter a crowded port area, so arriving early is sensible.

The boat has seating, a toilet, an onboard bar, and an upper deck on some vessels. Several reports describe the boat as clean and comfortable, though it is not an empty luxury yacht. Expect a shared excursion with enough room to sit, but not unlimited personal space.

Nea Kameni and the volcanic crater

The first major stop is Nea Kameni, the volcanic island in the middle of the Caldera. The boat anchors, and you can take the optional walk up to the crater area.

This is not a paved promenade. You walk over uneven, rocky ground through dark volcanic formations shaped by eruptions over thousands of years. The climb is manageable for many people in average condition, but the sun, loose rock, and lack of shade can make it tiring. Good shoes matter more here than fashionable sandals.

The reward comes quickly as the path rises. You get broad views across the Caldera and a close look at Santorini’s volcanic core. The guide explains the geology and formation of the islands, adding useful context to what can otherwise look like a field of black rocks.

Guides have included Roula, Yannis, Georgia, Gianni, and Jonas on different departures. The strongest part of the guiding is the explanation during the walk. You can also listen to audio commentary on the boat, which helps connect the islands, cliffs, and eruptions into one story.

The volcano admission is not included. Bring €5 in cash because the supplied information specifies cash payment. You can choose not to do the full hike, but the boat stop is most worthwhile if you walk at least partway up. One sensible approach is to climb at your own pace and turn back if the heat or footing becomes uncomfortable.

Wear your walking shoes from the start of the day. You will use them again on Thirassia.

Palea Kameni and the swim to the hot springs

After Nea Kameni, the boat continues to Palea Kameni for the thermal-water stop. This is the most unusual swim of the day, but it is important to understand what you are signing up for.

You do not simply step from the boat onto a beach. The boat stops offshore, and you swim toward the hot spring area. Foam pool noodles are provided, which help if you are not a confident swimmer. Life jackets are reserved for emergencies, so the noodle is the main support offered during normal swimming.

Wear your swimsuit under your clothes. One useful tip is to put it on before leaving the port because changing facilities on board are small. You should also use an older or dark swimsuit. The thermal water may look brown or yellow, and the minerals can discolor pale fabric.

The water is not always as hot as the name suggests. Some people find it pleasantly warm, while others describe it as only mildly warm. The swim itself can be more enjoyable than the spring water, especially when you are looking back at the boat and volcanic cliffs.

Time here is limited, with some departures allowing roughly 30 minutes. That is enough for a swim, but not for a long soak. If you want a relaxed thermal bathing experience, this may feel brief. If you view it as a quick, memorable swim in a volcanic setting, the stop works well.

Take care near the shore because underwater rocks can be present. The water is not a good choice for anyone who is uncomfortable swimming from a boat. Children must be accompanied by an adult, and the trip is not suitable for wheelchair users or people who cannot manage uneven surfaces.

Thirassia: lunch, stairs, and a quieter pace

The final main stop is Thirassia, where you have free time to eat and explore. This island feels quieter and less polished than the famous cliffside towns across the water. Restaurants near the dock offer local dishes, and food prices can be reasonable, though you should choose carefully because the quality varies from one restaurant to another.

The boat may remain here for about two hours, though the exact timing can vary. That sounds generous, but it disappears quickly if you want to eat, swim, and climb toward Manolas.

From the landing area, you can walk around the lower village or take the steep stair route toward Manolas. Some departures offer a traditional donkey ride at an additional cost, while the supplied information also notes that donkeys may not always be available. Do not assume that a ride will be operating. If you want to reach the upper village, be prepared to walk.

The climb is tiring but not especially long for a reasonably fit person. The reward is the view down into the bay and across toward Santorini. Cafes in Manolas offer a pleasant place for a frappe or a pastry, and one particularly appealing stop mentioned by name is Fyrgano, known for frappes and baklava.

Still, the upper village is not packed with major sights. You go mainly for the view, the atmosphere, and the chance to see a quieter side of the area. If you climb slowly, eat lunch, and return to the dock on foot, your free time can feel tight. If you would rather have a calm meal, remain near the water and skip the stairs.

There is also time for a quick swim at Thirassia on some outings. This can be useful for washing off the mineral residue from the hot springs.

The return sail past Oia and Fira

The ride back is more than transportation. The boat sails around the Caldera, giving you a low-level view of the cliffs that you usually see from above.

Oia looks particularly striking from the water, with white buildings layered along the upper cliff. You also pass views toward Imerovigli and Fira, seeing the height and color of the volcanic cliffs from a new angle. The return route is a fine counterpoint to the morning’s walking.

This is a long stretch on the boat, which some people love and others find slow. I would treat it as built-in rest after the volcano and Thirassia climbs. Find a seat on the roof deck if available, bring your hat and sunglasses, and keep your camera ready.

The onboard bar sells drinks, and several people found the prices reasonable. Food is not included, so plan to buy lunch on Thirassia or bring only what the operator permits. The commentary continues on the water, and some departures add music for a livelier ride back.

What to pack for this particular route

The best packing list is short but specific:

• Comfortable walking shoes with a solid sole
• Swimsuit worn under your clothes
• Dark or older swimwear
• Towel and sunscreen
• Hat and sunglasses
• Cash for the €5 volcano entry, food, and optional cable car or donkey costs
• A light layer for the boat ride if you are sensitive to wind

You should not bring a pet. The tour is not wheelchair accessible, and it is not recommended for strollers or people with walking disabilities because of the rocky volcano path and stairs.

Full names and dates of birth are required when booking because the port authorities need that information. Children must travel with an adult, and infant seats are not available.

Who will enjoy it most

I would choose this cruise if you want to combine Santorini’s volcano, Caldera views, swimming, and a small-island visit in one day. It suits active couples, families with older children, and anyone who prefers a broad introduction to the area instead of spending the whole day at one beach or village.

It is also a good choice if you are watching your budget. The price includes the main boat journey and guiding, while optional spending remains under your control. You can buy drinks, choose your own lunch, and decide how far to climb at both walking stops.

I would think twice if you dislike boats, struggle with rocky paths, or want a quiet spa-style hot spring. The swim involves open water, the spring stop is short, and the water may be only warm rather than hot. You should also avoid booking it if you need a fully accessible route.

The duration is listed as six hours, so this is not a quick add-on. It takes a meaningful part of your day, but the range of scenery and activities makes the time feel well used for most people.

Should you book this Santorini cruise?

Yes, if you want good value and do not mind a little effort. The combination of Nea Kameni, Palea Kameni, Thirassia, and the Caldera return route gives you a fuller picture of Santorini than a simple coastal sail.

Book it with realistic expectations: bring proper shoes, wear your swimsuit, carry cash, and do not expect a long hot soak. If you make peace with the stairs and the limited spring time, this is an efficient and memorable way to see the volcanic side of Santorini.

FAQ

How long does the Santorini cruise last?

The activity lasts six hours.

Where does the standard tour meet?

The standard meeting point is the Santo Star Office at Fira Old Port. Meeting time is 10:15 am, with departure at 10:30 am.

Does the cruise include hotel pickup?

Hotel pickup and drop-off are available only if you choose that option. Pickup may be at a nearby walking point rather than directly at your hotel. For the pickup option, the cruise departs from Athinios Port at 9:45 am.

Is the volcano hike required?

No. The hike to the volcano crater is optional, but you should expect rocky and uneven ground if you choose to walk.

How much is the volcano entrance fee?

The volcano entrance fee is €5, payable in cash.

Do I need to be a strong swimmer?

You need to be comfortable swimming from the boat toward the hot springs. Foam pool noodles are provided for less confident swimmers, but life jackets are supplied only in an emergency.

What should I wear for the hot springs?

Wear your swimsuit before boarding if possible. A dark or older swimsuit is recommended because the thermal water can be brown or yellow and may discolor light fabric.

Is lunch included?

No. Food is not included. You have free time to buy lunch on Thirassia, and drinks are available for purchase from the onboard bar.

Can I take a cable car to the port?

An optional cable car ticket is listed at €12 each way. This cost is not included in the tour.

Is the tour wheelchair accessible?

No. The tour is not suitable for wheelchair users, strollers, or people with walking disabilities because it includes uneven surfaces and a moderate amount of walking.