Santorini Port: 3 Hour Cruise to Volcano and Hot Springs

Santorini’s caldera looks different from the water: steep cliffs ring the bay, while the dark volcanic islands sit at its center. This cruise takes you to Nea Kameni, where you can walk over rough volcanic ground toward the crater, then on to Palea Kameni for a swim.

I like that the trip pairs a volcano walk with time in the sea, and that pool noodles are provided for the hot-springs stop. The main caveat is that the hike is self-guided, and the hot-springs swim is brief, with only 30 minutes allowed at the stop.

What to know before you go

• The volcano walk is on your own: You’ll receive a time to return to the boat, but you are responsible for your route and safety.
• Wear proper shoes: The ground is rocky and uneven. One way takes about 30 minutes, and you may have around 1.5 hours at Nea Kameni.
• The hot springs are not bath-hot: The water is warmer than the open sea, but it can still feel cold, especially outside summer.
• Expect to swim from the boat: The hot-springs area is reached through the sea, and noodles are provided to help you float.
• Budget for extras: The volcano entry fee is €5 in cash. The cable car is listed at €12 each way and is not included.
• The trip length varies: The advertised duration is three to six hours. Free time in Thirasia is available only with the relevant option.

Sailing out from Fira Old Port

The meeting point is the Santo Star office at Fira Old Port. Check-in is set for 10:30 am, with departure at 11:00 am. From there, you board a wooden sailboat and head across the caldera toward the volcanic islands.

The boat ride is part of the appeal, not just transport between stops. From the water, you get a broad view of Santorini’s steep coastline and the caldera’s dark islands. Bring a camera, but keep it secure: you might get wet on board, depending on the weather.

The boat is described as comfortable, and there is a seat for every passenger. In summer, though, it can be crowded. That matters most if you want room to spread out or a clear view from a particular spot. Drinks and snacks are available to buy at the onboard bar, but food and drinks are not included.

Audio commentary is provided during the boat trip. The activity also lists live guides in English, Italian, and French. At the volcano, the amount of explanation can vary: the hike itself is self-guided, though a guide may give a short briefing or point out features before you set off. Don’t count on a guided walk all the way to the crater.

Walking on Nea Kameni’s volcanic ground

The first main stop is Nea Kameni, an active volcanic island in the caldera. You can pay the €5 entry fee and hike toward the crater, or stay on the boat. The fee is paid separately in cash, so have euros ready.

The walk is a memorable change from Santorini’s villages and coast. You’ll cross dark, rocky ground and see the island’s volcanic features up close. Some visitors report seeing steam and feeling warmth from the ground, though conditions can vary. The views from higher up are a major reward: you can look across the caldera and back toward Santorini’s cliffs.

Plan for uneven footing, not a smooth trail. Comfortable walking shoes are essential, and sandals or shoes with thin soles are a poor choice. The route takes roughly 30 minutes each way, with the full stop lasting around 1.5 hours according to one account. That gives you time to walk, stop for photos, and return, but some people may find the pace or available time a little tight.

This is not a guided hike. You are responsible for your own safety, so follow the crew’s instructions, pay attention to the return time, and don’t set off on a route you cannot comfortably complete. The guide may offer information before the walk, but you should be ready to explore independently.

If you’d rather skip the climb, you can remain aboard and enjoy the views from the boat. That makes the stop flexible for mixed-ability groups, though the tour involves a moderate amount of walking overall and is not suitable for wheelchair users.

Swimming near Palea Kameni

After Nea Kameni, the boat heads to Palea Kameni for the hot-springs stop. The water is warmed by volcanic activity and is a little warmer than the surrounding sea. That description is worth taking literally: it is not a heated spa pool, and in cooler months the water may feel decidedly cold.

You reach the springs by swimming from the boat. The swim is short, but the water can be deep, and you may need to cover about 10 metres before reaching shallower water. Pool noodles are supplied, which can make the crossing easier. If you are not a confident swimmer, you can stay aboard and enjoy the scenery instead. The boat has life jackets for emergencies, but they are not provided as routine swimming gear.

The stop is limited to 30 minutes because of port authority rules. That is enough for a quick swim, but not a long soak, especially if you are among the last people to enter the water. The black-sand shore adds to the stark volcanic setting, though this stop is more about a brief, unusual swim than lingering on a beach.

Bring a swimsuit and towel, even if you are uncertain about getting in. The water can surprise you by being colder than expected, but arriving unprepared means you cannot change your mind. Sulfur-rich water may discolor light-colored fabrics, so choose a dark swimsuit and avoid bringing pale clothing into the water.

Thirasia, timing, and the return

Some versions of the experience include free time to explore Thirasia, while others do not. The overall duration is listed as three to six hours, so check the option and current timing before you book. Don’t assume every departure includes the island stop.

The return takes you back to Fira Old Port. Getting between the port and Fira’s upper town is a separate part of your day, and the cable car ticket is not included. The listed price is €12 each way. If you are relying on the cable car, check its operating status before you set out; access arrangements can affect how tiring the port journey feels.

The old harbor can be hectic, so allow time to find the Santo Star office and reach the boat. The meeting time is 10:30 am, half an hour before departure. Arriving early gives you a little breathing room before the boarding area gets busy.

Is the €35 fare good value?

At $35 per person, the fare is reasonable for a boat trip that includes two volcanic-island stops, audio commentary, the option to hike, and the hot-springs swim stop. It is strongest value if you want both the volcano walk and a chance to swim, rather than simply a scenic ride.

Keep the extra costs in view. The €5 volcano entry fee is separate, and the cable car costs €12 each way according to the tour information. Food and drinks are also extra, though you can buy them on board. The price is still approachable, but the total outing costs more than the headline fare.

Value also depends on what you expect from the guide. If you want a fully guided volcano trek with detailed explanations throughout, this may not fit. The hike is self-guided, and the boat commentary or on-island explanation may be brief. If you are happy to explore at your own pace and mainly want the setting, views, and two distinct stops, the format makes sense.

The cancellation terms allow a full refund if you cancel at least 24 hours ahead, and the reserve-now, pay-later option keeps your plans flexible. You will need to provide each passenger’s full name, date of birth, and nationality to meet port authority requirements.

What to bring and who will enjoy it

Pack comfortable shoes, sunglasses, a sun hat, sunscreen, beachwear, a towel, and cash. Shoes are the most important item for the rocky volcano trail; a towel and swimsuit make it easier to take the plunge if conditions suit you. Keep valuables and spare clothes protected in case the boat gets wet.

This outing suits you if you like a little walking and want to see more than Santorini’s towns and viewpoints. It can work for families, but children need to be comfortable on a boat, around uneven ground, and near deep water. The onboard bar can help with snacks, but bring cash for purchases and the volcano fee.

It is less suitable if you need step-free access, want a long, leisurely swim, or are uncomfortable with a self-guided hike. Non-swimmers can remain on the boat at the hot springs, but the activity’s most distinctive moments involve either walking on the volcano or entering the sea.

Should you book this Santorini cruise?

Book it if you want a good-value outing that combines caldera views, a walk on an active volcanic island, and a short swim in warmer-than-sea water. The volcano stop is the stronger reason to go: it offers unusual terrain and fine views, while the hot springs are a fun extra rather than a guaranteed steamy soak.

Skip it if you expect a fully guided hike, need a long swim, or would rather avoid rocky paths and boat-to-water access. Bring proper shoes, cash, and swim gear, and check which duration and Thirasia option you are selecting. With those expectations set, this is a practical way to spend part of a Santorini day beyond the usual cliff-top circuit.

FAQ

How long is the cruise?

The duration is listed as three to six hours. The exact length depends on the option selected, including whether free time in Thirasia is included.

Where do I meet the boat?

Meet at the Santo Star office at Fira Old Port. Check-in is at 10:30 am, and the boat departs at 11:00 am.

Is the volcano hike guided?

No. The hike is self-guided, and you are responsible for your own safety. A guide may provide information before you set off.

How much is the volcano entry fee?

The entry fee is €5 per person and is paid separately in cash.

Are the hot springs very hot?

No. The water is warmer than the surrounding sea, but it may still feel cold, especially in cooler weather.

Can I stay on the boat if I do not swim?

Yes. If you are not a confident swimmer, you can remain on the boat during the hot-springs stop.

Is the cable car included?

No. The optional cable car ticket is not included and is listed at €12 each way.