Santorini – Volcano and Hot springs

Santorini’s volcanic past is not just something you admire from a cliffside terrace. On this three-hour boat trip, you walk across the black volcanic island of Nea Kameni, see smoking rocks, then swim from the boat toward the warm waters of Palaia Kameni. It is a direct way to experience the force beneath Santorini’s famous white villages.

I like the low price, the short schedule, and the fact that the guide walks up to the craters with you. I also like the practical touches, especially the onboard restroom and swimming noodles. The main catch is physical: the volcano walk is uphill and rocky, while the hot springs require a roughly 30-meter swim from the boat.

Key points to know before booking

• The volcano walk takes about 25 minutes uphill: Wear sturdy shoes, not flip-flops, and bring sun protection.
• The hot springs are reached from the boat: You climb down a ladder or stairs and swim through seawater toward the warmer bay.
• The water is warm, not boiling: Temperatures are about 30 to 35 degrees Celsius where seawater mixes with the thermal water.
• You pay €5 extra for the volcano: This entrance charge is not part of the $36.01 tour price.
• The 11 a.m. departure returns around 2 p.m.: It suits a tight Santorini schedule and includes transport time.
• Demetris is one memorable crew member: He has been praised for his calm, friendly way of helping people feel at ease.

What this short Santorini boat trip really offers

This is not a grand sailing cruise or a full-day exploration of the caldera. It is a focused outing with two stops: the volcanic island of Nea Kameni and the hot springs at Palaia Kameni.

That narrow focus is the reason the trip costs about $36.01. You are paying for a boat ride, a local guide, and access to two unusual natural sites, not for a meal, hotel pickup, or a long day at sea. For a first visit to Santorini, it gives you a useful look at the islands’ volcanic core without taking over your whole day.

I see the tour as a good fit if you have limited time, want to spend less than cruise-ship excursion prices, or simply prefer a short outing to a full-day sailing trip. You should choose something else if you want several swimming stops, a quiet luxury boat, or a long visit at the hot springs.

The boat carries up to 75 people. That is not an intimate trip, although the experience is split between the boat ride, the volcano walk, and the swim. The vessel has a restroom, which matters on a three-hour outing, especially since there are no facilities on the volcanic islands.

Getting down to Fira’s Old Port

The meeting point is at Santorini Excursions, Dakoutros Bros J.V., at Fira Old Port. You need to reach the port yourself. There is no transfer included from your hotel, airport, or cruise ship.

This is the detail most likely to cause confusion. If you are staying in Fira, you need to get down to the Old Port, not simply wait near the upper town. If you are arriving by cruise ship, you will tender to the Old Port area, but you still need to find the Dakoutros Bros J.V. ticket booth and redeem your voucher before boarding.

Use the supplied map link carefully and check the exact coordinates. The booth is marked Dakoutros Bros J.V. and is near white cube-shaped benches, in front of the boarding area. Allow extra time for the cable car and for finding the correct stand. One practical mistake can turn a relaxed morning into a rushed one.

The boat leaves at 11 a.m. The listed return time is 2 p.m., and the travel time is included in the three-hour total. That makes the schedule easy to understand, but you should still allow time afterward to get back up to Fira.

Nea Kameni and the smoking craters

The first boat ride is short, about 10 minutes, from the Old Port to Erinia, a small bay on Nea Kameni. This is the island where you walk toward Santorini’s active volcanic craters.

The boat stays for about one hour and 15 minutes. That sounds generous, but much of the time can be used by the uphill walk, photo stops, and the guide’s explanation. The path is made of uneven volcanic rock, and parts of it can feel slippery. There are umbrellas and seats at several points, but you should not count on the walk being easy.

You may see rocks that are still smoking and smell sulfur, often described as brimstone. This is the part of the trip that gives the outing its real character. Santorini’s villages are beautiful, but here you see the rough material that shaped the islands in the first place.

The guide walks with the group and explains the volcanic activity at the top. Demetris has been singled out for being especially reassuring and attentive, while other guides have also been praised for explaining the site clearly. The quality of this stop depends partly on how much attention you give the guide. Stay close enough to hear, especially if you want more than photographs.

The €5 volcano entrance ticket is extra. Bring cash or be prepared to pay the admission charge as directed by the operator. It is a small cost, but the advertised tour price does not cover it.

How hard is the volcano walk?

The walk is manageable for many people who are comfortable on uneven ground, but it is not a flat stroll. One uphill section can take around 25 minutes, and the heat and direct sun make it feel harder than the distance suggests.

Wear hiking shoes, walking shoes, or another pair with a firm sole. Flip-flops are a poor choice. Bring water, sunscreen, and a hat. Water is not supplied on shore, although drinks may be available for purchase onboard.

If you do not exercise regularly, you may need to stop often or turn back before the highest point. The boat does not become a problem just because you skip the final climb, but you will miss the best view and the smoking crater area. Be honest about your pace before booking.

Swimming at Palaia Kameni

After the volcano stop, the boat continues to Palaia Kameni and the small bay of St. Nicholas. This is where the thermal water mixes with ordinary seawater.

The temperature is listed at about 30 to 35 degrees Celsius. That sounds hot, but the bay is not a heated swimming pool. The water can feel pleasantly warm in places and much less warm in others, depending on where you swim and how the seawater is mixing.

There is no beach. You climb down from the boat by a ladder or stairs, then swim about 30 meters toward the interior of the bay. Some people jump in, while others use the ladder. Swimming noodles are provided, which helps if you are not a confident swimmer, but they do not remove the need to swim from the boat to the warm water.

This is the most important practical point about the second stop. You need to be comfortable in open water and able to swim the short distance. The crew may advise weaker swimmers not to enter, and that can be disappointing if you expected to stand in shallow water. The rocks near the springs can also be slippery and covered with algae, so avoid scrambling over them.

The boat remains at the hot springs for about 30 minutes. That is enough time for a swim, but not for a long, slow soak. Some people find the swimming period too short, especially if they need extra time getting in and out. If you want several swims or a proper beach stop, this trip will feel limited.

Still, the setting is unusual. You are looking toward the volcanic slopes while swimming in water warmed by geothermal activity. Even if the temperature is mild rather than hot, the combination of black rock, open sea, and volcanic surroundings makes this more interesting than an ordinary swim stop.

The boat ride, guide, and onboard comfort

The boat is described as attractive and old-fashioned, with a comfortable feel and friendly staff. This is a simple excursion, but the boat ride is part of the pleasure. You get open-water views of the caldera and a different angle on Santorini’s cliffs.

The onboard restroom is a useful inclusion. You will not find a full range of services on Nea Kameni or Palaia Kameni, so having a toilet on the boat makes the three-hour schedule easier.

There is no lunch or snack included. Pack something small if you need food, and bring water. One useful approach is to carry a packed lunch and eat it onboard during a quiet stretch. Drinks may be sold on the boat, but it is better not to depend on that.

The crew’s approach seems to be one of the tour’s stronger points. Guides explain the volcano, walk with the group, and pay attention during the swim. Demetris, in particular, has been noted for putting people at ease when they worry about being late back to the boat. That kind of calm matters on a timed outing.

The group limit is 75 people. Expect a shared excursion rather than personal guiding. If you want detailed one-to-one attention or a very quiet ride, look for a smaller charter.

Price and value at about $36.01

At roughly $36.01 per person, this is one of the cheaper ways to visit both volcanic islands from Santorini. The cost covers the boat, the guide, the restroom, and swimming noodles. You still need to budget for the €5 volcano entrance ticket, food, drinks, and your own transportation to the Old Port.

The value is strongest for people with a short stay. You see the active volcanic area, hear an explanation from a local guide, and have time for a thermal-water swim, all in about three hours. The tour does not demand a full day or the higher price of a larger sailing package.

The value drops if you cannot do the volcano walk or swim from the boat. You can still ride the boat and enjoy the views, but the two main stops are built around those activities. You may spend much of the time waiting while others climb or swim.

I would also compare the cost with your port schedule if you are on a cruise ship. The tour itself is short, but getting from the ship to the Old Port, finding the booth, and later returning to the ship all require time. Do not book a tight connection simply because the boat ride lasts three hours.

Who should book this experience?

I would recommend it to you if:

• You want a budget-friendly look at Santorini’s volcanic side.
• You have only half a day available.
• You enjoy short hikes on rough ground.
• You can swim in open water for about 30 meters.
• You are happy with a shared boat carrying up to 75 people.
• You prefer a simple, active outing over a long sailing day.

I would be cautious if you have limited mobility, dislike ladders, or are not a strong swimmer. Service animals are allowed, and most people can participate, but the physical demands of the two stops still matter.

The trip also works well for people who want structure. The boat leaves at a set time, stays a defined period at each site, and returns to the starting point. You do not need to plan separate boat connections or negotiate a visit to the volcano on your own.

Booking details and cancellation

Confirmation is provided when you book. Free cancellation is available up to 24 hours before the local start time for a full refund. Changes or cancellations made less than 24 hours before departure are not accepted for a refund.

The trip depends on good weather. If poor weather causes the operator to cancel, you can choose another date or receive a full refund.

Plan your clothing around sun, rock, and water. Wear shoes with grip, bring sunscreen and water, and take a swimsuit and towel if you plan to enter the springs. Leave flip-flops for the hotel.

Should you book the Santorini Volcano and Hot Springs trip?

Book it if you want the most direct and affordable way to see Santorini’s volcanic heart. The smoking rocks, sulfur smell, and guide-led climb offer something you cannot get from a viewpoint in Fira. The warm-water stop adds a playful finish, provided you are comfortable swimming from the boat.

Skip it if your priority is a relaxed cruise, a sandy beach, or a long soak in genuinely hot water. The volcano walk is uphill, the swim is not optional if you want the full experience, and the 30-minute water stop passes quickly.

For the price and time commitment, I think this is a sound choice for an active half-day. Just arrive at the Old Port with extra time, wear proper shoes, and treat the hot springs as warm seawater reached by swimming, not as a shallow spa.

FAQ

How long does the Santorini Volcano and Hot Springs trip last?

The experience lasts about three hours. It departs from Fira Old Port at 11 a.m. and returns to the same port at about 2 p.m.

Where does the boat depart?

The meeting point is Santorini Excursions, Dakoutros Bros J.V., at Fira Old Port in Ormos Firon.

Is the volcano entrance fee included?

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

Do I need to swim to reach the hot springs?

Yes. There is no beach at the stop. You climb down from the boat and swim about 30 meters toward the warmer water. Swimming noodles are provided.

How warm are the hot springs?

The water temperature in the small bay varies from about 30 to 35 degrees Celsius because the thermal water mixes with ordinary seawater.

What happens if bad weather cancels the trip?

If poor weather causes cancellation, you will be offered another date or a full refund. You can also cancel up to 24 hours before the start time for a full refund.