Santorini – Volcano and Hot springs

Santorini’s famous cliffs and white villages are only half the story. This three-hour boat trip takes you into the caldera, to the black volcanic islands that helped shape the island you came to see. You’ll walk uphill to active craters, smell sulfur, then swim from the boat toward warm water at Palea Kameni.

I like the short two-stop plan, which keeps the price at $36.01 and leaves you time for other Santorini plans. I also like the practical touches: an onboard restroom, swimming noodles, and guides who stay involved on the volcano walk. Demetris is one crew member singled out for his calm, friendly help.

The catch is that this is more active than the low price may suggest. The volcano path is uphill and uneven, and the hot springs require a 30-meter swim from the boat. If you are not a strong swimmer, or if stairs are difficult for you, part of the tour may be out of reach.

Key points to know before you book

• The boat leaves Fira Old Port at 11 a.m. and returns at about 2 p.m., with transportation time included.
• The volcano walk takes effort. The path to the craters is uphill, rocky, and slippery in places, with about 25 minutes of climbing for many people.
• The hot springs are reached by swimming. There is no beach, and you climb down the boat ladder or jump into the sea before swimming roughly 30 meters.
• The water is warm, not bathtub-hot. The stated temperature is 30 to 35 degrees Celsius, but seawater mixing can make it feel less hot.
• Bring proper shoes and food. Hiking shoes or sturdy walking shoes beat flip-flops, and lunch is not provided.
• The $5 volcano entrance fee is extra. The boat, local guide, restroom, and swimming noodles are included.

Why this three-hour trip earns its place in Santorini

Santorini can become expensive quickly, especially if you are visiting from a cruise ship or have only one day on the island. This trip gives you a useful look at the caldera’s volcanic core without taking most of the day.

At $36.01 per person, the value is strongest for someone who wants the two main volcanic stops and does not need a long sailing cruise, a meal, or several swimming breaks. You are paying for a focused outing, not a full-day island cruise.

The boat leaves from the Old Port of Fira at 11 a.m. and returns around 2 p.m. That timing works well if you want a morning in town before heading down to the water, or if you want to reserve the rest of the afternoon for Santorini’s villages. You should still allow time to reach the port itself. The old port sits below Fira, and you may need to use the cable car to get down.

One important practical point: your booking confirmation is not necessarily the final boarding ticket. You need to check in at the Dakoutros Bros J.V. booth at the Old Port before boarding. The booth is near the white cube benches and in front of the departing boat. If you arrive by cruise tender, the shop is relatively easy to spot near the tender area. If you are coming from Fira, follow the directions carefully rather than wandering around the town looking for the office.

The group can reach up to 75 people. That is not an intimate private outing, but it keeps the price well below many larger sightseeing packages. The vessel has a restroom, which matters on a three-hour trip, and the crew provides swimming noodles for the hot springs stop.

The short ride to Nea Kameni

The boat takes about 10 minutes to reach Erinia, a small bay on Nea Kameni, the volcanic island at the center of the caldera. The ride is brief, but it gives you a changing view of Santorini’s steep walls and the water-filled volcanic basin.

The boat itself has been described as comfortable, well cared for, and somewhat old-fashioned in style. That gives the outing a more traditional harbor-trip feel rather than the polished feel of a luxury yacht excursion. You can sit back during the short crossing, but do not expect a long scenic cruise before the walking begins.

Once at Erinia, the boat remains for about 1 hour and 15 minutes. This is the longest stop, and it is where the physical part of the outing takes place.

Walking among Santorini’s active craters

Nea Kameni is not a green island with shaded paths. It is a dry, dark volcanic place, marked by rough rock, exposed ground, and the sharp smell of sulfur. The walk takes you toward the active craters, where you may see rocks that are still smoking.

The path climbs steadily. One account places the walk to the upper area at around 25 minutes, though your pace and stopping time will affect that. Umbrellas and seats are available at three points along the route, which gives you places to pause. The guide walks with the group and explains what you are seeing at the top.

I would not call the walk extreme, but I would call it demanding for anyone who does not exercise regularly. The surface can be loose and slippery, and the heat and direct sun add to the effort. Wear hiking shoes or firm walking shoes. Flip-flops are a poor choice here, both for grip and comfort.

The reward is not a grand monument. It is the chance to see an active volcanic area up close, with smoking rock and a strong sulfur smell. That makes the stop valuable for anyone curious about how Santorini formed. The island’s dramatic cliffs, beaches, and villages are all tied to volcanic activity, and this walk lets you see that force in a very direct way.

You should also be realistic about the time. The boat waits 75 minutes, so you need to watch the clock. Some people may choose to walk only partway and wait at one of the rest points. You should not feel pressured to reach the top if the surface or incline is beyond your comfort level, but you also should not book this outing expecting to remain on the boat for the whole stop.

The €5 entrance ticket to the volcano is not included. Bring cash or be prepared to pay the separate admission fee listed for the visit.

Swimming toward the Palea Kameni hot springs

After the volcano stop, the boat continues to Palea Kameni, the smaller volcanic island where the hot springs are located. The boat stays for about 30 minutes in the bay of St. Nicholas.

This is not a beach stop. There is no sand or dock where you can simply step into the water. You climb down the boat ladder, or jump if you are comfortable doing so, then swim roughly 30 meters toward the warmer water near the shore. Swimming noodles are supplied, which helps, but they do not replace basic swimming ability.

The water temperature is given as 30 to 35 degrees Celsius. It is warmed by volcanic activity, but it mixes constantly with cooler seawater. That matters because the experience may feel pleasantly warm rather than truly hot. Some swimmers find the water less warm than expected, especially if they remain closer to the boat or enter the bay from the cooler side.

The rocks near the warm water can be slippery and covered with algae. Take care as you approach the interior of the small bay, and do not rush. The crew gives safety instructions, and the boat staff watches the swimming area, but you are responsible for judging your own ability.

The half-hour stop passes quickly. You have time to swim out, find the warmer water, and return to the boat, but not much time for repeated swims. If you are hoping for several long swims or a relaxed afternoon in thermal water, this trip will feel too brief.

The hot springs are best for confident swimmers who enjoy a slightly unusual swimming stop. You can also remain on the boat if the swim is not suitable for you, but that reduces the value of the second half of the trip. The activity description should be read carefully: the swimming distance and lack of a beach are central parts of the stop.

What the crew adds to the experience

A local guide accompanies the outing and explains the volcano during the uphill walk. That guidance makes a real difference here. Without it, Nea Kameni can look like a bare stretch of dark rock. With an explanation of the craters, sulfur, and volcanic activity, the stop has much more meaning.

The strongest praise goes to the staff’s friendliness and attention to safety. Demetris is mentioned by name as a reassuring crew member who helped keep the mood relaxed when one person worried about being late back to the boat. That sort of calm assistance is useful on an outing with a fixed boat departure.

The crew also helps at the water stop, especially when people are deciding if they should swim. Still, I would prefer the strong-swimmer warning to be made very clear before booking. The water entry is not suitable for everyone, and the swimming noodles are a useful aid, not a guarantee of safety.

English is the offered language. The group size can reach 75 people, so explanations may be made to a fairly large group. If you prefer a private guide or a quiet, flexible pace, this is not that sort of trip.

What to bring for the volcano and springs

You can make this outing much easier with a small amount of preparation.

• Sturdy walking shoes: The volcano trail is uphill, rocky, and slippery in spots.
• Swimsuit and towel: You enter the sea from the boat and swim toward the springs.
• Sun protection: Sunscreen is especially important because the volcano walk is exposed.
• Water: Bottled water is sold onboard, but it is not included. Bring your own if possible.
• Lunch or a snack: Lunch and snacks are not provided. A packed lunch can be eaten on the boat.
• A secure day bag: Keep your hands free on the volcano path and avoid carrying anything awkward during the swim.

You do not need to bring a swimming noodle, since those are included. You should not count on finding drinks or food at the volcanic islands. The practical plan is to eat before departure or pack something simple.

Who will get the most from this boat trip

I would choose this tour if you have limited time in Santorini and want a direct look at the volcanic islands. It suits active couples, families with older children who can manage the hike and swim, and cruise passengers trying to keep excursion costs under control.

It also works for anyone who wants a shorter outing rather than an all-day sailing program. The three-hour schedule gives you a clear beginning and end, and the return to the same Old Port makes the plan easy to fit around other time in Fira.

I would think twice if you have limited mobility, dislike uneven ground, or are not comfortable swimming from a boat. The volcano stop has an uphill walking route, and the hot springs stop has no beach access. You can skip either activity, but you will get less from the ticket.

This is also not the right choice if you want a luxurious boat, a meal, or lots of open-water swimming. The emphasis is on seeing the volcano and making one short swim toward the warm water.

Price, timing, and cancellation details

At $36.01, this is one of the lower-cost ways to visit both volcanic islands from Santorini. The price includes the boat, local guide, restroom, and swimming noodles. You pay extra for the €5 volcano entrance ticket, and you also handle your own lunch, drinks, and transportation to the Old Port.

The value is good because the itinerary avoids extra stops and keeps the outing to three hours. The trade-off is limited time at the springs and no meal or transfer from your hotel.

You can cancel for a full refund up to 24 hours before the scheduled start. Changes made less than 24 hours before departure are not accepted, and late cancellations are not refunded. The trip depends on good weather. If poor weather cancels it, you are offered another date or a full refund.

FAQ

Where does the Santorini volcano and hot springs tour start?

It starts at Santorini Excursions, Dakoutros Bros J.V., at Fira Old Port in Ormos Firon. The activity ends back at the same meeting point.

What time does the boat leave and return?

The boat departs daily at 11 a.m. and returns at about 2 p.m. The stated three-hour duration includes the travel time.

How long is the volcano stop?

The boat remains at the volcano for about 1 hour and 15 minutes. You can follow the path uphill toward the active craters during this time.

Is the volcano entrance fee included?

No. The volcano entrance ticket costs €5 per person and is not included in the tour price.

Do I have to swim to reach the hot springs?

Yes. There is no beach at the stop. You climb down the boat ladder or jump into the water, then swim about 30 meters toward the interior of the bay.

Is the hot spring water very hot?

The water temperature is listed as 30 to 35 degrees Celsius, but it mixes with normal seawater. As a result, it may feel warm rather than very hot.

What is included on the boat?

The tour includes a local guide, an onboard restroom, and swimming noodles. Lunch, snacks, drinks, hotel transfers, and the volcano entrance fee are not included.

Should you book it?

Book this trip if you want the essential volcanic experience at a sensible price: a guided walk among smoking craters, a short boat ride through the caldera, and a brief swim toward warm water. It is especially useful when your Santorini schedule is tight.

Skip it if you need easy, level access or are not a confident swimmer. The honest choice comes down to the physical demands. For an active visitor who prepares with proper shoes, sunscreen, water, and a packed lunch, this focused three-hour outing offers a memorable look at the volcanic heart of Santorini without consuming the whole day.