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Santorini Volcano & Hot Springs Cruise from Fira: Hike & Swim

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Free cancellationTravelers' pick

1/18

Duration3h

GroupUp to 150

LanguagesEN · EL

Mobile ticketAccepted

Hike volcanic trails at the summit, then swim into warm mineral waters

You’ll hike Santorini’s active volcano with a local escort who shares stories as you walk its rocky trails, then dive off a traditional boat to swim through mineral-rich hot springs near Palea Kameni. Expect raw landscapes, salty air, laughter with fellow travelers—and memories that stick long after you rinse off the sulfur.

Step-by-step itinerary

Board boat at Fira old port
Arrive at Santorini volcano island
Pay 5€ entrance fee
Hike volcanic trails with guide
Enjoy views from volcano summit
Return to boat
Sail to Palea Kameni island
Swim 30-40 meters to hot springs
Relax in thermal mineral waters
Swim back to boat

The Experience

I didn’t expect the volcano to smell like eggs before we’d even docked, but there it was—this weird, earthy tang that hit as our old wooden boat bumped against black rocks. Our guide, Maria, grinned at my wrinkled nose and said, “It means the volcano is alive.” She handed us our tickets (5€ for the entrance—bring cash) and warned us about the loose gravel on the path. I’d read about this Santorini volcano tour online but being here, boots crunching over ash and seeing little wisps of steam curling up from cracks… it felt more real than any photo.

The hike wasn’t too tough but I did have to stop a couple times—partly because of the sun (bring water!) and partly just to stare out at that caldera. The Aegean looked impossibly blue down below. Maria pointed out where the last big eruption happened; she even picked up a chunk of pumice and let us feel how light it was. There were people from all over—some chatting in Greek, others just quietly taking it all in. I liked that nobody rushed us at the top; we had time to wander around or just sit on a warm boulder for a bit. I still think about that view when things get noisy back home.

Afterwards we climbed back onto the boat (I nearly slipped—watch your step if you’re clumsy like me) and set off for Palea Kameni. The water changed color as we got closer—sort of rusty orange near the shore. Maria explained that’s from all the volcanic minerals. To get into the hot springs you have to jump off and swim maybe 30-50 meters. Not gonna lie, I hesitated (the water’s chilly at first), but once you reach those warm patches it’s like someone turned on an underwater heater. The sulfur smell sticks to your skin a bit—I didn’t mind though, felt kind of wild floating there with everyone laughing and splashing around.

We only had about half an hour in the springs before heading back toward Fira Old Port. My swimsuit still has faint yellow stains (Maria did warn us about that), but honestly, every time I see them I remember how raw and different this day felt compared to anything else on Santorini.

What’s included

Your day includes guided hiking on Santorini’s volcano with expert insights from your escort, foam pool noodles for extra support while swimming at Palea Kameni’s hot springs, and all transport by traditional boat from Fira Old Port—plus plenty of time to soak up volcanic views before returning in the afternoon.

Good to know

Moderate physical level

Operated by Caldera's Boats Santorini Sea Excursions