Euronet

The Euronet ATM on 25is Martiou in Thira (Fira) is one of the more accessible cash machines on Santorini, operating around the clock every day of the week. It sits at address 25is Martiou 401, within the island's main town, putting it in reach of most visitors staying in or passing through Fira.

Euronet is one of Europe's largest independent ATM networks, and its machines on Greek islands are a common fallback when bank-operated ATMs have queues or restricted hours. That said, Euronet ATMs are widely known for presenting a dynamic currency conversion (DCC) prompt — an offer to convert your withdrawal into your home currency at the ATM's own exchange rate rather than your bank's. Declining that conversion and letting your own bank handle the exchange almost always works out cheaper.

For practical cash needs in the middle of the night, during a Sunday, or when local bank branches are closed, this machine provides a reliable option in a central Fira location.

What to Expect

The machine is a standalone Euronet-branded ATM unit, not attached to a Greek bank branch. That distinction matters for a couple of reasons. First, there is no in-branch support if the machine swallows a card or fails mid-transaction — you would need to contact your own bank and Euronet's customer service directly. Second, the fees applied at the machine itself are set by Euronet rather than by a local Greek bank, and they can be higher than those at Alpha Bank, Piraeus Bank, or National Bank of Greece ATMs.

The machine accepts the standard international card networks — Visa, Mastercard, Maestro, and Cirrus — and is designed to serve foreign cardholders as well as Greek account holders. Withdrawal limits are set by your own bank, not by the ATM, though the machine may impose its own per-transaction cap.

One practical note on the DCC prompt: when the screen asks whether you want to be charged in euros or in your home currency, always select euros. Choosing your home currency at an independent ATM like this one triggers a dynamic currency conversion at an unfavorable rate, adding a hidden cost to the transaction.

The location on 25is Martiou places it in the commercial spine of Fira, within walking distance of the main bus terminal (Fira Bus Station), the central square, and the main shopping and restaurant street. Parking in central Fira is limited, so if you are driving in specifically to use this ATM, factor that in.

How to Get There

From Fira's central square (Theotokopoulou Square), walk south along the main road toward 25is Martiou street — the machine is a short walk from the town center. If you are arriving by bus, the Fira Bus Station is the main hub on Santorini, and the ATM is within a 5–10 minute walk from there.

For visitors staying in Oia, Imerovigli, or Firostefani, a taxi or a short drive to Fira is the most practical approach. There is no dedicated parking lot immediately beside the address, so street parking nearby or the main Fira parking area off the main road are the best options if you are driving.

The address is on a paved street accessible on foot without significant steps, though Fira's terrain is hilly and some approach routes involve staircases. The immediate street-level location should be reachable without stairs.

Best Time to Visit

Because this ATM operates 24 hours a day, seven days a week, timing is flexible. In high season (July and August), Fira's central streets are busy throughout the day and into the late evening, so the machine may have a short queue during peak afternoon and post-dinner hours. Early morning — before 9:00 — tends to be quieter.

Santorini's peak tourist season runs from late May through September, when cruise ship arrivals can swell the population of Fira significantly during midday hours. If you need cash on a day when multiple cruise ships are docked in the caldera, visiting the ATM early or late in the day avoids the busiest windows.

In the shoulder months of April, May, October, and early November, crowds thin considerably and using the ATM at any time is unlikely to involve waiting.

Tips for Visiting

• Decline dynamic currency conversion. When prompted to pay in your home currency or in euros, always select euros. This ensures your own bank's exchange rate applies rather than Euronet's, which is consistently less favorable.
• Check your bank's foreign transaction fees beforehand. Some accounts charge a fixed fee per ATM withdrawal abroad; if that's the case, withdraw a larger amount in one transaction rather than multiple smaller ones.
• Have a backup option in mind. Greek bank ATMs — Alpha Bank, Piraeus Bank, and National Bank of Greece all have branches in Fira — typically charge lower independent fees than Euronet machines. If those machines are available and working, they are worth using first.
• Keep your card and receipt secure. Central Fira is busy in season and the standard precautions around ATM use apply: shield the keypad when entering your PIN and take your receipt.
• Contact your bank before traveling. Notify your bank of travel to Greece so your card is not blocked on a foreign transaction. This is especially relevant if this is your first international use of the card.
• The machine is open on Greek public holidays. Unlike bank branches, this ATM does not close for national or religious holidays, which is useful around Orthodox Easter, Assumption Day (August 15), and other major Greek holidays when banks shut.
• Emergency card contact numbers. If the machine retains your card, you will need to call your card issuer's international helpline. Save that number in your phone before you travel rather than searching for it in a stressful moment on a Greek street.

Practical Information

• Address: 25is Martiou 401, Thira 847 00, Santorini, Greece
• Hours: Open 24 hours, 7 days a week
• Network: Euronet independent ATM
• Cards accepted: Visa, Mastercard, Maestro, Cirrus, and other international networks
• In-branch support: None — this is a standalone machine
• Languages: The interface is available in English and other European languages in addition to Greek
• Nearest landmarks: Fira central square, Fira Bus Station, main Fira shopping street