How much eSIM data for 30 days in Greece?
For 30 days in Greece with normal daily use, TripUtils estimates 12–18 GB. A 20 GB plan is the usual buffer. Not a live price. Maps between ports and offline-unfriendly island roads are still normal use. Video on a beach day is the usual reason the high end of the range matters.
Photo: Pixabay / PexelsTravel essentials in Greece
The four things that save the most money or hassle before you go.
eSIM for Greece
Usually included on an EU/EEA plan (roam like at home). Non-EU SIM or need more data? Install an eSIM before you fly.
See Saily plans →Airport transfer
Pre-book a ride from the airport to your stay – or compare with a taxi or public transport on arrival.
Find a transfer →Tours & tickets
Attractions, tours and activities in Greece – compare prices on more than one site.
Browse Klook →Flight delayed?
3+ hours late or cancelled? Up to €600 per passenger under EU261, depending on distance.
Check claim (AirHelp) →Affiliate links: TripUtils may earn a commission at no extra cost to you. Affiliate disclosure. TripUtils does not show live prices.
What to do next
If your home SIM is an EU/EEA plan, Greece is often already included. Check roaming first. If you still want a travel eSIM, pick a Saily plan at or above 20 GB for Greece.
Planning size
| Habits | 30-day range | Planning size |
|---|---|---|
| Normal (maps, messages, social) | 12–18 GB | 20 GB |
| Normal + daily video | 30–45 GB | 50 GB |
Assumptions and sources
Light 0.20 / normal 0.50 / heavy 0.95 GB per day, plus optional extras, plus about 20% buffer. No live retail prices.
July–August ferry and island stays sit at the top of the band; GB still tracks phone habits, not ferry tickets.
These are planning ranges, not live prices.
Common questions
Is 20 GB enough for 30 days in Greece?
Maps between ports and offline-unfriendly island roads are still normal use. Video on a beach day is the usual reason the high end of the range matters. The 12–18 GB estimate plus buffer lands on 20 GB. Hotel Wi‑Fi is not counted. Streaming video on mobile is the usual reason to go larger.
Should I roam in Greece instead?
Greece is EU roam-like-at-home for most EU/EEA SIMs. Island coverage still depends on the home operator’s Greek partner — an eSIM can be a second network, not a cheaper EU roam.
Do you show live Saily prices?
No. Live prices belong on the provider site. The numbers on this page are a data-size estimate only.