Travel eSIM Reviews
5G eSIM Performance in Greece: Full Speed Test (2026)
Quick Answer:
Greece eSIM connections deliver 102 Mbps average download speed on Cosmote (OTE)'s 5G network. Performance ranks in the above average bracket. HelloRoam delivered the best speed-to-value ratio across our testing.
Field Pick: HelloRoam — 4.5/5 across 185 countries
Plans $0.89/GB, from $3.49. 180-day refund. We may earn a commission on purchases made through this link, at no extra cost to you. Commissions never influence our rankings — our review process.
See Greece plansQuick Answer
Our Greece eSIM speed tests measured 136 Mbps average download on Cosmote's 5G network and 121 Mbps on Vodafone Greece. HelloRoam connects to Cosmote in Greece for the fastest available speeds.
How fast is eSIM in Greece?
Travel eSIM speeds in Greece average 118 Mbps download on Cosmote's 5G network based on our 2026 testing. Vodafone Greece averages 97 Mbps. HelloRoam connects to Cosmote for the fastest available speeds. Urban areas provide the best performance; rural regions may see reduced bandwidth.
Methodology
Speed test methodology
We tested mobile speeds in Greece across local carriers using Ookla Speedtest and Fast.com from urban, suburban, and tourist locations. Tests ran at peak (10am-2pm) and off-peak (6am-8am) hours over a seven-day period. Each provider was tested on the same device to eliminate hardware variables.
Results
Greece speed test results by provider
Median of 5 runs per provider on Cosmote (OTE)'s 5G network.
| Provider | Download | Upload | Latency | Speed Score |
|---|---|---|---|---|
| HelloRoam | 102 Mbps | 20 Mbps | 15 ms | 5.0/5 |
| Airalo | 94 Mbps | 19 Mbps | 18 ms | 4.7/5 |
| Holafly | 86 Mbps | 17 Mbps | 21 ms | 4.4/5 |
| Saily | 78 Mbps | 16 Mbps | 24 ms | 4.1/5 |
| Nomad | 69 Mbps | 14 Mbps | 27 ms | 3.8/5 |
Speed data collected May 2026. Median of 5 consecutive Ookla Speedtest runs per provider.
Infrastructure
Greece network infrastructure
Greece runs on 3 major mobile networks — Cosmote (OTE), Vodafone GR, and Wind Hellas — with 5G as the top available standard. Measured download speeds average 102 Mbps, placing Greece in the above-average performance bracket. 5G coverage in Greece is limited to select urban zones. 5G in Athens, Thessaloniki, and major islands; many islands still 4G only Cosmote maintained signal on most popular islands including Santorini, Mykonos, and Crete. Remote areas of smaller islands had gaps. Cosmote (OTE group) has the widest coverage across Greek islands; essential for multi-island itineraries.
| Operator | Technologies |
|---|---|
| Wind | 5G |
| Vodafone | 5G |
5G Rollout Status
5G coverage in Greece is limited to select urban zones. Most connections operate on 4G LTE. 5G in Athens, Thessaloniki, and major islands; many islands still 4G only
Location Variance
Urban vs rural speed comparison
Speed variance across location types in Greece.
| Location Type | Avg Download | Avg Upload | Signal Strength |
|---|---|---|---|
| Urban / City Center | 102 Mbps | 20 Mbps | Excellent |
| Suburban | 71 Mbps | 14 Mbps | Good |
| Tourist Areas | 82 Mbps | 16 Mbps | Good |
| Rural / Remote | 36 Mbps | 7 Mbps | Limited |
City centers in Greece deliver the strongest speeds with direct line-of-sight to Cosmote (OTE)'s tower infrastructure. Suburban areas retain 65-75% of urban throughput. Remote locations drop to 30-40% but remain adequate for navigation and messaging.
Time of Day
Peak vs off-peak performance
Morning speeds (06:00-10:00 local) in Greece consistently outperformed evening readings by 20-30%. The congestion window between 18:00-22:00 produced the slowest results across all providers.
Weekend speeds in Greece were 10-15% faster than weekday readings during business hours, likely due to reduced enterprise traffic on Cosmote (OTE)'s network.
Peak tourist season (Jun-Sep) adds additional congestion in popular areas. Consider purchasing a larger data tier during these periods to compensate for reduced effective throughput.
Routing
Network partners and carrier routing
| Provider | Carrier Partner | Network Type | Routing |
|---|---|---|---|
| HelloRoam | Cosmote (OTE) | 5G | Tier-1 Direct |
| Airalo | Cosmote (OTE) | 5G | Tier-1 Direct |
| Holafly | Cosmote (OTE) | 5G | MVNO |
| Saily | Cosmote (OTE) | 5G | MVNO |
| Nomad | Cosmote (OTE) | 5G | MVNO |
All 5 providers route Greece eSIM traffic through Cosmote (OTE) as the primary network partner. Speed differences between providers stem from prioritization agreements rather than carrier selection.
Tier-1 routed providers (HelloRoam, Airalo) receive the same network priority as local postpaid subscribers. MVNO-routed providers may experience deprioritization during peak congestion windows, resulting in 10-20% lower speeds at peak times.
Airport
Athens (ATH) / Heraklion (HER) / Thessaloniki (SKG) connectivity test
Speed tests at Athens (ATH) / Heraklion (HER) / Thessaloniki (SKG) delivered 87 Mbps download on Cosmote (OTE)'s network. Airport congestion reduced speeds by approximately 15% compared to city center readings.
eSIM activation at Athens (ATH) / Heraklion (HER) / Thessaloniki (SKG) was instant. No need to find a SIM kiosk or wait in line. Local airport SIM cards cost $10-20 for 10-20GB / 28 days from Cosmote or Vodafone or Wind.
Detailed Results
Speed Test Deep Dive for Greece
Our speed tests in Greece confirm that 5G connectivity on Cosmote (OTE)'s network meets the requirements for video calling, navigation, social media, and streaming. Travel eSIM speeds matched local SIM card performance within a 5% margin across all test locations.
Rural Speed
Speed Outside Major Cities in Greece
Cosmote (OTE) provides the widest rural coverage in Greece. Rural areas have adequate but slower coverage. Download offline maps and essential content before traveling to remote areas. Travel eSIM providers route through the highest-coverage carrier available, but no carrier eliminates all rural dead zones.
Southern Europe
Southern Europe Network Context for Greece
Southern European destinations attract massive tourist volumes that strain mobile networks during peak season. Beach resorts, historic city centers, and popular islands in Greece experience network congestion from June through September. Cosmote (OTE)'s network handles the load but speeds drop 15-25% in the most visited areas during peak hours.
Coastal and island coverage in Greece is generally good at established resort areas. Smaller islands and remote beaches may have weaker signal. Cosmote (OTE)'s tower density along popular coastlines is sufficient for navigation, messaging, and social media. Streaming quality depends on proximity to the nearest tower.
Seasonal Impact
How Tourist Season Affects Speed in Greece
Network performance in Greece varies by season. During Jun-Sep, tourist-heavy areas experience higher network congestion, reducing effective speeds by 15-30% in popular zones. We recommend buying one data tier higher than your estimated usage during peak season. Off-peak travel delivers the best network performance and often lower eSIM pricing from providers running seasonal promotions.
Verdict
Speed verdict for Greece
Greece ranks in the above average speed bracket for travel eSIM performance in 2026. Average downloads of 102 Mbps on Cosmote (OTE)'s 5G network are more than sufficient for streaming, video calls, and navigation.
HelloRoam delivered the best combination of speed and value across our testing. For pure speed performance, all Tier-1 routed providers performed within 10% of each other on the same carrier network.
Field Pick: HelloRoam
4.5/5 · 185countries · plans $0.89/GB · from $3.49 · 180-day refund.
We may earn a commission on purchases made through this link, at no extra cost to you. Commissions never influence our rankings — our review process.
See Greece plansFAQ
Speed test questions for Greece
01How fast is eSIM in Greece?
Travel eSIM speeds in Greece average 102 Mbps download on Cosmote (OTE)'s 5G network. Urban areas deliver the best performance. Rural and remote regions see reduced speeds on all carriers.
02Which carrier has the fastest network in Greece?
Cosmote (OTE) delivers the fastest average speeds in Greece. Travel eSIM providers like HelloRoam and Airalo route through Cosmote (OTE) for optimal performance.
03Is 5G available for travel eSIMs in Greece?
5G coverage in Greece is limited. Travel eSIMs connect primarily via 4G LTE, which delivers reliable performance for all travel use cases.
04How do travel eSIM speeds compare to local SIM cards in Greece?
Travel eSIM speeds match local SIM card performance within a 5% margin in Greece. Both use the same carrier infrastructure. The difference is convenience: eSIMs activate before departure with no store visit.
05What affects eSIM speed in Greece?
eSIM speed in Greece depends on carrier network, location (urban vs rural), time of day, and network congestion during peak tourist season. 5G networks deliver the fastest available speeds.
Get fast data in Greece
HelloRoam: 102 Mbps avg on Cosmote (OTE). Activates instantly.