Seeing the Northern Lights in Reykjavik depends on one thing many people forget: having reliable internet to check the prediction just when the sky clears up. An eSIM for Reykjavik gives you that connection from the moment you land, so you can check the KP index, follow cloud maps, and share aurora photos without searching for Wi-Fi. Here's how to make the most of it.
Why do you need data to hunt for auroras?
Hunting for auroras is a game of patience and real-time data. You need a connection to check solar activity and the cloud map every few hours, because a strong aurora with cloudy skies won't be visible. With an eSIM active from Keflavík airport, you'll have this information in the palm of your hand without relying on hotel Wi-Fi.
Iceland is not part of the European Union for "Roam Like at Home" purposes for all tariffs, so using your usual Spanish data could cost you €10-20 per day. A travel eSIM gives you a fixed, predictable rate: you know what you're paying before you leave. And because it coexists with your physical SIM, you keep your Spanish number to receive SMS while browsing with the plan's data. For full country details, check our eSIM for Iceland guide.
Coverage in Reykjavik and surrounding areas
The Icelandic capital has some of the best mobile coverage in Europe. Local operators—Síminn, Vodafone Iceland, and Nova—offer very solid 4G and 5G in Reykjavik and its metropolitan area. A travel eSIM relies on these networks, so in the city you'll have fast and stable signal at all times.
- Reykjavik city center (Laugavegur, Hallgrímskirkja, harbor): 5G in most places.
- Keflavík Airport and road to the capital: continuous 4G.
- Golden Circle (Þingvellir, Geysir, Gullfoss): good coverage at main sites.
- Interior and highlands: signal drops in sparsely populated areas; normal for any operator.
This matters for aurora hunting: the best spots are usually on the outskirts, in dark areas. Have the prediction handy before leaving the city in case you lose coverage on the way.
Apps and websites to check on the go
With mobile data, these tools become your best allies to avoid missing the show:
- Aurora prediction from the Icelandic Met Office (Veðurstofa Íslands): shows activity and, crucially, the cloud map.
- KP index and space weather apps to know the expected intensity.
- Offline maps: download them in case you go off-grid and lose signal.
- Camera and social media to upload photos instantly without looking for Wi-Fi.
Photographer's tip: activate your phone's hotspot with the eSIM to give internet to a tablet or connected camera while you wait in the middle of nowhere. This way, you can check the prediction on a large screen without draining your main phone's battery.
If you're traveling with others, check how data sharing between multiple devices works so you don't have to buy a plan for each person.
How many GB do you need for your trip?
Iceland is a destination where many photos and videos are taken, so it's good to have plenty of data. As a reference, estimate between 1 and 1.5 GB per day if you share content often; less if you only use maps and aurora prediction.
| Trip type | Days | Recommended GB |
|---|---|---|
| Reykjavik getaway | 3-4 | 3-5 GB |
| Reykjavik + Golden Circle | 5-6 | 6-8 GB |
| Island tour (Ring Road) | 8-10 | 10-15 GB |
| Maps and prediction only | any | ~0.5 GB/day |
A tip to stretch your plan: use your accommodation's Wi-Fi to upload heavy videos and save your eSIM for what you need on the go and for aurora hunting.
Auroras outside the city: Golden Circle and South
The best auroras are seen away from Reykjavik's light pollution. Þingvellir National Park, the Geysir area, and the south coast are classic spots, and in many of them you'll still have coverage to check the sky. The eSIM allows you to drive to a clear spot and check live if it's worth waiting. Many travelers rent a car precisely to be able to "chase" clear skies, and having data makes all the difference: you check the cloud map every half hour and decide whether to stay or move to another spot. Without a connection, that hunt becomes pure luck.
If you extend your trip to other Nordic countries, check out our guide to eSIM for Scandinavia or Norway, another great aurora destination. And if you're traveling during snow and ski season, the eSIM for skiing guide gives you tips to keep your phone connected in extreme cold.
How to activate your eSIM in 1 minute
Get your eSIM ready at home, with Wi-Fi, before you fly. The process is quick:
- Buy the Iceland eSIM and receive the QR code instantly by email.
- In your phone settings, go to Mobile Data → Add eSIM and scan the QR code.
- Name the line "Iceland" so as not to confuse it with your Spanish number.
- Upon landing in Keflavík, activate the eSIM data and deactivate roaming on your usual SIM.
Unsure if your phone supports eSIM? Check it quickly with our mobile compatibility guide.
Frequently asked questions
Do I have coverage to see the aurora prediction outside Reykjavik?
Yes, in the tourist spots of the Golden Circle and the south coast, Síminn, Vodafone, and Nova coverage is good. In the interior and highlands, it might drop. It's best to check the prediction and cloud map before leaving the city and download offline maps in case you lose signal.
How much data do I use tracking aurora activity?
Checking predictions, cloud maps, and the KP index consumes very little: a few hundred megabytes a day. The big expense comes from uploading photos and videos. If you plan to share a lot of content, estimate 1-1.5 GB daily; if you only check the prediction, half a gigabyte a day is plenty.
Does the eSIM work as soon as I land in Keflavík?
Yes, as long as you've installed it beforehand with Wi-Fi. As soon as your phone picks up the Icelandic network upon landing, data activates automatically. That's why it's convenient to have it ready at home: you don't need to find a store or connect to the airport's Wi-Fi to start browsing.
Can I share the connection with my camera or tablet?
Yes. Activate your phone's hotspot with the eSIM and share internet with other devices. It's very useful for providing a Wi-Fi camera with internet while waiting for the aurora, or for a tablet to view the prediction on a large screen. Keep in mind that sharing consumes more battery and data.
Do I keep my Spanish number in Iceland?
Yes. The eSIM coexists with your physical SIM, so you continue to receive calls and SMS on your Spanish number, including bank verification codes. You just need to assign mobile data to the eSIM and deactivate roaming on your usual line to avoid overspending.
Conclusion
Reykjavik has excellent mobile coverage, and for aurora hunting, connection is as important as warm clothing: without data, you can't check the prediction or cloud map at the crucial moment. Being outside "Roam Like at Home," avoid traditional roaming and opt for a fixed-rate plan. Install your Iceland eSIM before you fly and land ready to chase the green sky.
