Croatia is one of travellers' favourite summer destinations: Istria, Dalmatia, Dubrovnik, Split, the islands — and you can reach it all easily by car. Croatia has been an EU member state since 2013, so roaming is free. But in a few situations an eSIM is still the better choice.
EU roaming in Croatia
The Roam Like at Home rules apply fully to Croatia. This means:
- You can use your home plan's data allowance
- Domestic rates apply
- You don't need to buy any extra plan for a short holiday
For a short, 1–2 week holiday, EU roaming is usually the perfect solution.
When is an eSIM still worth it?
- Long stay (3+ weeks): You might hit the fair use policy limit
- Festival season: During Ultra Europe (Split) and other big festivals the network can be overloaded — a local eSIM can give you better priority
- High data need: If you work remotely or stream a lot, the FUP allowance runs out quickly
- Montenegro day trip: If you're planning to cross the border, an eSIM gives you more control over which network you use
Croatian mobile networks
There are three major operators in Croatia:
- Hrvatski Telekom (T-Com HR) — the widest coverage, a Deutsche Telekom subsidiary
- A1 Hrvatska — a reliable second operator, good coastal coverage
- Telemach (formerly Tele2) — more affordable, but with smaller coverage
Coverage on the coast and islands
| Area | Coverage | Note |
|---|---|---|
| Istria (Pula, Rovinj, Poreč) | Excellent 4G/LTE | Very good, on motorways too |
| Dalmatia (Split, Zadar, Šibenik) | Excellent 4G/LTE | Cities and coast alike |
| Dubrovnik and surroundings | Excellent 4G | Watch for network switching near the border! |
| Big islands (Hvar, Brač, Korčula, Krk) | Good 4G | Can be weaker in the island interior |
| Small islands, open sea | Variable, 3G/4G | Patchy signal on ferry routes |
Montenegro warning: not the EU!
This is one of the most important things to know on a Croatian holiday. Many people take a day trip from Dubrovnik to the Bay of Kotor in Montenegro — which is beautiful, but:
- Montenegro is NOT an EU member state
- When you cross the border, your phone switches to a Montenegrin network
- Non-EU roaming fees kick in — which can be very expensive per MB!
What should you do?
- Turn off data roaming before you cross the border
- Use an offline map (download Montenegro in advance in Google Maps)
- If you need internet in Montenegro, buy an eSIM data plan for the Montenegro trip too
- In the southern part of Dubrovnik and around Neum (Bosnia), watch that your phone doesn't switch to a foreign network
Practical tips
- Driving: On the A1 motorway (Zagreb–Split) coverage is good throughout, but it may drop for short stretches in tunnels
- Ferries: On the major ferry routes (Split–Hvar, Zadar–Dugi Otok) there's usually a signal, but it's patchy on open water
- Festivals: During Ultra Europe in Split, Outlook in Pula and other festivals the network can be overloaded — a local eSIM can be an advantage then
- Water sports: Coverage is generally good along the coast, but variable deep in the bays and by rocky shores
Summary
For a short holiday in Croatia, EU roaming is perfect. For a longer stay or a high data need, it's worth switching to an eSIM. Most important: if you take a trip to Montenegro, be prepared, because EU roaming no longer applies there!