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Everyone who visits Santorini looks at the volcano. Almost nobody actually goes and stands on it. That's worth changing — book the volcano and hot springs cruise, because this was one of the strangest, most genuinely fun half-days I've had on the island, and it's the one experience that actually explains what you're looking at from every clifftop table in Oia.
It's easily one of the best tours to book in Santorini, and a completely different kind of day than the catamaran cruise most visitors default to.
There are several volcano tours to choose from in Santorini, and I'm breaking this one down in full — from how to book and what to bring to exactly what a morning on an active volcano actually feels like and whether the hot springs live up to the name.
Whether you're finalizing your Santorini itinerary or just starting to research your trip to the island, this guide has you covered.
Why the Santorini Volcano Tour Is So Special
Santorini isn't just built near a volcano — it is the volcano. The whitewashed villages on the caldera rim sit on the walls of a crater that violently collapsed into the sea around 3,600 years ago, and the dark island sitting in the middle of that flooded crater, Nea Kameni, is still active. It last erupted in 1950, and it's one of only a handful of places in Europe where you can walk directly onto the crater of a live volcano on an ordinary afternoon.
What makes the day worth it isn't drama — it's context. Once you've stood on the black rock, felt the ground faintly warm underfoot, and looked back across the water at the 300-meter cliffs Oia and Fira are built on, every caldera-view dinner for the rest of your trip means something different. You're not just looking at a pretty view anymore. You're looking at the inside of the thing that created the island.
Before You Book: What This Actually Is (and Isn't)
Two words in this tour's name do a lot of misleading, so it's worth being upfront: “volcano” doesn't mean lava. Nea Kameni's most recent eruption was in 1950, and what you'll actually see is a stark, lunar-looking landscape of black volcanic rock, sulfur vents, and a wide crater — genuinely striking, but a quiet, still place rather than anything resembling the movie version of a volcano.
“Hot springs” is the bigger expectation gap. This is not a heated pool or a spa experience — it's a patch of open sea near Palea Kameni that's naturally warmed by geothermal activity, and by the operator's own official numbers, the water runs only up to about 4°C (7°F) warmer than the surrounding Aegean. Reviewer Rebekah put it well: “warmer waters by the volcano, not hot!” Go in expecting a genuinely unusual, mineral-rich swim rather than a jacuzzi, and it becomes one of the most memorable twenty minutes of the trip instead of a letdown.
Booking Your Santorini Volcano Tour
There are plenty of volcano and hot springs cruises to compare, and they range from bare-bones boat transport to full sunset dinner cruises. I booked this one, the Cruise to Volcano, Hot Springs & Thirassia, run by MTM Experiences, and it's the most straightforward, no-frills version of the classic route — rated 4.4 out of 5 across 1,580 reviews, from €30 per person.
A few things to keep in mind when booking this tour:
- Bring cash for the volcano entrance fee. Access to the Nea Kameni crater path costs €5 per person, cash only, paid on the island itself — it's not bundled into the tour price. Don't get caught without euros in your pocket.
- The volcano hike is self-guided. You get a guide and audio commentary on the boat, but once you land on Nea Kameni, you walk the marked crater path at your own pace rather than following a guide up the hill. That's part of why it's more relaxed than it sounds — and also why comfortable shoes matter more here than on most boat tours.
- This is a big boat, not an intimate sail. The vessel holds up to 150 guests. If you're picturing a small private catamaran, this isn't that — it's a proper excursion boat with a bar, an audio system, and a genuinely mixed international crowd.
- Check the health notes before swimming at the hot springs. The operator specifically advises against the swim if you have heart disease, a sulfur allergy, are pregnant, or aren't a confident swimmer — it's roughly a 50-meter open-water swim to reach the warm patch, foam noodles are provided, and it's genuinely fine to just watch from the boat instead, which is exactly what several reviewers did.
- Food and most drinks are pay-as-you-go. There's an onboard bar for drinks and snacks, but this isn't a meal-included cruise the way some pricier options are — eat before you go, or budget a little extra for lunch on board or in Thirassia.
Book ahead of time — this listing is currently flagged as likely to sell out, and with free cancellation up to 24 hours before departure, there's little reason not to lock in a spot early.
What to Expect on Your Santorini Volcano Tour
Here's the honest, stop-by-stop version of what a morning or afternoon on this cruise actually looks like. The tour runs 4 to 6 hours depending on your slot, and the order can shift slightly, but the shape of the day is consistent.
Boarding & the Sail Out
You board at the Santorini harbor, and your guide gives a short introduction paired with audio commentary as the boat gets underway — context on the caldera, the island's history, and what's coming up. The onboard bar opens if you want a coffee or a drink for the ride.
Nea Kameni: Walking the Volcano
The boat docks at Nea Kameni, and you're free to hike the marked path up to the crater at your own pace — a stark, black, lunar landscape shaped by thousands of years of eruptions. Reviewer Mehar described it as “a great day trip to hike the volcanic mountains and get to see the remarkable views from the craters,” and specifically noted the heat: this walk has essentially no shade, so a hat and water matter here more than on most Santorini activities.
Palea Kameni: The Hot Springs
Next, the boat anchors roughly 50 meters offshore from the hot springs — boats aren't allowed to get closer, for safety reasons. You swim in (foam noodles provided if you want them) to a patch of sea distinctly warmer and more mineral-rich than the surrounding water, though as covered above, “warm” rather than “hot” is the accurate description. It's a 30-minute stop, and plenty of people — including reviewer Mehar — are perfectly happy watching from the boat instead of swimming.
Thirassia: Free Time in a Real Village
The tour continues to Thirassia, the quiet island across the caldera that split off from Santorini in the same eruption. You get free time here to explore at your own pace — reviewer Mehar called the village “very beautiful,” with architecture that felt distinctly different from the more polished caldera villages. If you want to see more of the island, you can climb Thirassia's spiral staircase to the upper village of Manolas on foot, or pay for an optional donkey ride up.
The Sail Back
Depending on your route, the return sail can trace the coastline from Oia toward Athinios port — reviewer Arnaud specifically mentioned this stretch passing a small chapel tucked into a sea cave, visible only from the water. It's a quieter, more scenic close to the day than simply retracing the outbound route.
The Volcano Behind the Cruise
Nea Kameni and Palea Kameni are the visible, still-growing remnants of the same volcanic system responsible for the Minoan eruption roughly 3,600 years ago — one of the largest eruptions in recorded history, and the event that collapsed the center of what was once a single round island into the sea, leaving the crescent-shaped Santorini of today. The eruption is widely believed to have devastated the Minoan civilization on nearby Crete, and remains one of the leading real-world theories behind the Atlantis myth.
Unlike most of Santorini, which has been shaped and rebuilt for millennia, Nea Kameni is genuinely young — still forming through periodic eruptions, the most recent in 1950, and closely monitored by volcanologists today.
Is the Santorini Volcano Tour Worth It?
Yes — with the right expectations. This isn't the most visually dramatic tour on the island, and if you're chasing postcard shots alone, the catamaran cruises with their Red Beach and White Beach stops arguably win on scenery. What this tour offers instead is understanding: an active volcano you can walk on, a genuinely strange swim, and a quiet island most visitors never set foot on.
At €30 per person, it's also one of the more affordable half-day boat experiences on the island — a real option if you want the volcano-and-hot-springs experience without paying catamaran prices for a BBQ and open bar you may not need.
Tips Before You Go
- Bring €5 in cash for the volcano entrance fee. It's paid on-site and not included in the ticket price.
- Wear real shoes for the crater hike. The volcanic path is loose, rocky, and shadeless — sandals make it harder than it needs to be.
- Pack a hat, sunglasses, and sunscreen. There's very little shade anywhere on this tour, on the boat or on Nea Kameni.
- Bring swimwear and a towel, even if you're not sure you'll swim. It's easy to decide once you see the hot springs up close.
- Don't expect the water to be hot. Set expectations at “noticeably warmer than the sea,” not “hot tub,” and you won't be disappointed.
- Skip the swim if you have heart issues, a sulfur allergy, or aren't a confident swimmer. Watching from the boat is completely normal and plenty of people do it.
- Bring a bit of extra cash for food. Meals aren't included — the onboard bar and Thirassia's taverna are pay-as-you-go.
Are You Ready for This Bucket-List Experience?
If Santorini is on your itinerary, this is the half-day that actually explains the island you're standing on. Check availability for the volcano and hot springs cruise here — and if you want the fuller picture of what else is worth booking, our guide to the best Santorini tours covers the rest, including our full catamaran cruise review if you're deciding between the two.
Written by
Athens-born engineer · Coordinates a 5-expert Greek team · 50+ years combined field experience
I write every article on this site drawing on real, first-hand expertise — mine and that of four colleagues who live and work across Greece daily: a Peloponnese tour operator, a transfer specialist across Athens, Mykonos & Santorini, a Cretan hotel owner, and a Northern Greece hotel supplier. Nothing here comes from a single visit or desk research.
Informed by 5 Greek experts
Every destination we cover has been visited and vetted by at least one team member — not for a review, but as part of their daily work in Greek tourism.