From Old Port:Volcanic Islands Boat Trip & Hot Spring Visit

Santorini’s most unusual outing takes you away from the white houses and cliff roads and onto black volcanic islands. You’ll hike across Nea Kameni’s crater trails, then board the boat again for a swim near Palea Kameni’s warm springs. It is a compact, active trip with a strong sense of place.

I like the short boat ride from Fira’s Old Port and the clear split between walking and swimming. I also like that you get a close look at the volcano instead of only photographing it from the caldera rim. The main catch is the real cost: the advertised $35 does not include the €5 volcano fee or the cable car, which costs €10 each way.

Key points

• Nea Kameni gets the most time: You have about 90 minutes to walk toward the active craters and take in the volcanic ground.
• The hot springs are warm, not reliably hot: Water temperature changes with the season and may feel only mildly warm.
• The swim requires strength: You must swim a long distance from the boat to reach the shore area.
• The Old Port adds cost and effort: The cable car is €10 each way, or you can use the 587 steps on foot.
• Two daily departures help: Choose 11:00 or 14:15, subject to availability.
• The trip is best for active sightseers: You need to manage a walk on volcanic terrain and possibly a long swim.

Why this three-hour trip is worth considering

Santorini is often enjoyed from above, with the caldera spread beneath Fira, Oia, and the cliff villages. This boat trip gives you a different view. You leave the built-up part of the island, pass through the caldera by water, and walk on islands created by volcanic eruptions.

That change of viewpoint is the real reason to book. You are not simply taking a sightseeing cruise. You are stepping onto Nea Kameni, following a trail toward active craters, and then stopping at Palea Kameni for a swim. The trip is short enough to fit into a busy Santorini day, but it still includes two very different activities.

The experience costs $35 per person before the extras. That is a reasonable starting price for a three-hour boat outing, but you should budget beyond the headline number. The volcano entrance fee is €5, and reaching the Old Port by cable car costs €10 per person each way. That makes the cable car €20 round trip, bringing the practical total to $35 plus €25 in stated local charges, before any exchange-rate differences.

You can walk down to the port instead, but that means handling 587 steps on the way down. Conditions can affect whether the steps are open for the return, so the cable car is the more predictable choice for many people. I would treat the transport cost as part of the outing, not as an optional surprise.

Getting down to Fira’s Old Port

The meeting point is the Old Port of Fira, also called Gialos, directly below the town. You first collect your ticket and final instructions at the Santo Star travel office at the port.

Getting there is part of the Santorini experience, but it is also the least simple part of the day. The cable car ride takes about three minutes and gives you an easy connection between Fira and the water. At €10 per person each way, it is not cheap, especially for a couple or family.

The alternative is the stairway. You will pass the famous cliffside setting and see the caldera from a lower angle, but 587 steps are a serious walk, especially in warm weather. Wear shoes with a firm grip and avoid treating the descent as a casual stroll. The return climb can be harder, and the supplied information warns that the steps may not always be open.

Arrive with enough time to find the office and board without rushing. The excursion runs at 11:00 and 14:15, with availability checked at booking. An English-speaking guide provides instructions before departure.

The short boat ride across the caldera

The boat ride to the volcano area takes about 15 minutes. That is long enough to see the island cliffs from the water, but not so long that the journey becomes the main event.

From sea level, Fira’s cliffs look even more imposing. The cave houses and layered volcanic rock make sense in a way they do not always do from a crowded viewpoint above. Keep your camera ready, but remember that the boat itself may be moving and conditions can change.

The boat is also your base between the two stops. This is not a free-roaming island visit where you set your own pace from one part of Santorini to another. You follow the group schedule, which keeps the trip efficient but gives you limited time to linger.

Nea Kameni and the 90-minute crater walk

Nea Kameni is the main stop, with about one hour and 30 minutes on the island. You can follow the trail toward the top and see the active craters at close range.

The word active can sound dramatic, but do not expect a theatrical eruption. The appeal is the raw volcanic setting: dark ground, crater shapes, and the feeling of walking on a young island formed by repeated eruptions. The walk gives you a direct look at Santorini’s geology instead of keeping the volcano at a scenic distance.

The trail is the most demanding part of the outing. You are walking on volcanic terrain, and the route to the craters involves an uphill section. The exact level of effort will depend on your pace and the conditions, but you should be comfortable walking outdoors and standing in the sun.

Use the 90 minutes well. The point is not to race to the top and immediately return. Give yourself time for photographs, views across the caldera, and a proper look at the crater area. At the same time, keep an eye on the meeting time. The boat cannot wait indefinitely for a slow return.

The volcano entrance fee of €5 is separate. This is a small charge compared with the overall outing, but it should be made clear in your budget. Bring cash or confirm the accepted payment method before you set off.

Some people may find the volcano less visually dramatic than expected. The appeal comes from the setting and the geology, not from elaborate visitor facilities or a dramatic smoking crater. If you want a short outdoor walk with unusual ground under your feet, it works well. If you want a major archaeological site or a polished attraction, this may feel modest.

Palea Kameni and the warm-water swim

After Nea Kameni, the boat continues to Palea Kameni. The stop lasts about 30 minutes and takes place near the small bay of Agios Nikolaos, where volcanic activity has created warm-water areas and mud baths.

The water is generally warmer than the surrounding sea, but the temperature changes with the season. Do not picture a modern spa pool. The springs may feel pleasantly warm, or they may seem only slightly warmer than the sea. A late-season visit can also make the idea of swimming less tempting.

You should bring a towel. There are no towels included, and the boat stop is brief. A swimsuit under your clothes makes the changeover easier, though the supplied information only specifically requires a towel.

The most important safety point is the swim itself. If you choose to enter the water, you must be a strong and skilled swimmer because you may need to swim a long distance to reach the shore area. This is not a shallow wade directly from a beach.

That detail changes the appeal of the stop. Confident swimmers can enjoy the unusual setting and the warm-water effect. Less confident swimmers may prefer to stay on the boat. You should not feel pressured to get in simply because swimming is part of the advertised plan.

Mud baths are associated with the bay, but the central promise here is a 30-minute swim at the thermal waters. Conditions and temperature can vary. I would think of it as a natural volcanic-water stop, not a guaranteed hot soak.

What the schedule feels like

The full experience lasts three hours. The stated timing gives you roughly 15 minutes to reach the volcano, 90 minutes on Nea Kameni, 30 minutes at the thermal waters, and the return trip to Fira.

That makes the schedule easy to understand. Nea Kameni receives the most attention, while Palea Kameni is a quick swim stop. If you want a slow boat cruise or several long island visits, this is not the right format. If you want to cover the main volcanic sights in half a day, the timing is useful.

There is one point to check before booking: the broad description refers to exploring Thirassia village, but the detailed three-hour schedule describes Nea Kameni and Palea Kameni, with no separate Thirassia stop. I would plan on the volcano and hot springs, not on having time to visit Thirassia.

The 11:00 departure is practical if you want the afternoon free. The 14:15 departure works better if you prefer a later start, but it may leave less daylight and warmth for the swim depending on the season. Since water temperature matters here, the earlier sailing may be more appealing during cooler months.

Costs, exclusions, and real value

The $35 base price is attractive, especially for a short boat trip from Fira. It covers the volcano visit for 90 minutes and the 30-minute thermal-water stop, with an English-speaking guide.

The extra costs matter:

• Volcano entrance: €5
• Cable car: €10 each way, or €20 round trip
• Towels: not provided

For someone already planning to walk to the Old Port and bring a towel, the trip is fairly economical. For someone relying on the cable car, the actual spend is much higher than $35. One practical complaint is not that the outing becomes poor value, but that the final cost is easy to underestimate.

I would compare the total against what you want from the day. The boat ride, crater walk, and swim are three distinct parts, so you are getting more than a simple harbor cruise. But the hot springs may not feel hot, and the volcano is a natural site rather than a highly developed attraction. The value is strongest for people who enjoy outdoor stops and unusual scenery.

Free cancellation is available up to 24 hours before departure, and you can reserve while paying later. Those terms help if your Santorini plans are still moving, but they do not change the extra port and entrance costs.

Who should book this outing

I would recommend it to you if you want a compact introduction to Santorini’s volcanic islands. It suits active adults, confident swimmers, photographers, and anyone who wants to get beyond the usual cliffside viewpoints.

It also works for a first visit when you have only part of a day available. The route is simple, the English-language guidance keeps the schedule clear, and the two main stops offer a good contrast.

Think twice if you dislike uphill walking, hot sun, uneven ground, or swimming away from the boat. You can skip the water, but the crater walk remains the main physical activity. Pets are not allowed.

Families and mixed-ability groups should discuss the swim before booking. The hike and the long swim are separate choices, so not everyone has to participate in both, but the outing is still built around outdoor activity rather than easy sightseeing.

Practical tips for a smoother trip

Wear sturdy shoes for Nea Kameni. Sandals may be fine for the boat, but they are not the best choice for a volcanic trail.

Bring a towel, swimsuit, drinking water, sun protection, and enough money for the €5 entrance fee and the cable car if you use it. Keep your belongings organized because you will move between boat, trail, and water in a short period.

If swimming is important to you, choose a time of day and season when the water feels comfortable. The springs are naturally warm, but not reliably hot, and the sea around the bay can still feel cool.

Allow time for the Old Port transfer. The cable car itself is quick, but you still need to reach the station in Fira, wait if needed, collect your ticket at the port office, and board on time.

Should you book the Santorini volcanic islands boat trip?

Book it if you want a reasonably priced, active half-day outing with a real volcano walk and a chance to swim near natural warm springs. The best parts are the close look at Nea Kameni, the caldera views from the boat, and the contrast between dry volcanic ground and the Palea Kameni water stop.

Skip it if you want a guaranteed hot bath, a relaxed cruise, or a trip with no extra fees. The cable car can add €20 per person, the volcano costs another €5, and the swim calls for strong skills.

My advice is to calculate the full cost before booking, bring proper shoes and a towel, and treat the hot springs as a warm-water stop rather than a spa. With those expectations, this is a useful way to see a more rugged side of Santorini in three hours.

FAQ

Where does the boat trip begin?

It begins at the Old Port of Fira, also called Gialos. Collect your ticket and final instructions at the Santo Star travel office directly at the port.

How can I reach Santorini’s Old Port?

You can take the cable car from Fira, which takes about three minutes and costs €10 per person each way, or walk down 587 steps.

What time does the excursion depart?

There are stated departures at 11:00 in the morning and 14:15 in the afternoon. Check availability for the date you want.

How long do you spend on Nea Kameni?

You spend approximately one hour and 30 minutes at the volcano area, with time to follow the trail toward the active craters.

Is the volcano entrance fee included?

No. The volcano entrance fee is €5 per person and is separate from the tour price.

Do I need to be a strong swimmer?

Yes, if you plan to swim at the hot springs. You may need to swim a long distance to reach the shore area, so the activity is intended for strong and skilled swimmers.