How much eSIM data for 30 days in Portugal?
For 30 days in Portugal with normal daily use, TripUtils estimates 12–18 GB. A 20 GB plan is the usual buffer. Not a live price. Navigation in Lisbon’s hills and island hops still fits the normal GB band unless you stream video on mobile. Type C/F at 230 V matches much of continental Europe.
Photo: Junior Diniz / PexelsTravel essentials in Portugal
The four things that save the most money or hassle before you go.
eSIM for Portugal
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 Portugal – 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, Portugal is often already included. Check roaming first. If you still want a travel eSIM, pick a Saily plan at or above 20 GB for Portugal.
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.
Summer in Lisbon, Porto and the Algarve lifts stays; data use follows the calculator, not the beach.
These are planning ranges, not live prices.
Common questions
Is 20 GB enough for 30 days in Portugal?
Navigation in Lisbon’s hills and island hops still fits the normal GB band unless you stream video on mobile. Type C/F at 230 V matches much of continental Europe. 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 Portugal instead?
Portugal is inside EU roaming for most EU/EEA plans. An eSIM is a backup when the home cap is small or the SIM is British/Swiss/other non-EU.
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.