Réunion eSIM Guide 2026

Yes. Réunion is an EU outermost region — part of France, part of the European Union, inside the eurozone and inside the EU roaming regulation — so an EEA line roams here at domestic rates, exactly as it would in Spain or Germany. That is the opposite of New Caledonia and French Polynesia, which are French but sit outside the EU and bill as international roaming. The catch is not the roaming rules but the fair-use limit: most EU tariffs cap roaming data well below the domestic allowance, and many also cap how many days a year you can spend abroad. Check both in your contract before you fly.

Three reasons, and if none of them apply to you then you do not need one and we would rather say so. First, the fair-use data cap: if your tariff gives you 30 GB at home but only a few GB while roaming, a fortnight of maps, video and photo uploads will use it up. Second, the days-abroad limit some operators apply before surcharges start, which a long stay exhausts. Third, and decisively: if you are not travelling on an EU/EEA line — from the United States, Latin America, Canada, Australia or a UK tariff that dropped EU roaming — the regulation does nothing for you and this is long-haul international roaming.

Orange Réunion. Checked in our own coverage data on 12 September 2026: all twelve Réunion country plans we sell declare a single network, Orange (MCC 647, MNC 00), at 5G. Our Europe regional and Discover global packages add a second island network, Telco OI, at 4G. Watch out for a naming trap that trips up most guides: Telco OI is the network operator, and on Réunion it sells to the public under the Free brand (on Mayotte it trades as Only), so “Telco OI” and “Free Réunion” are the same network under two names. The island has four mobile networks, not five: Orange, SFR (SRR), Free (Telco OI) and Zeop. Of those four, only Orange and Telco OI appear on our plans; SFR and Zeop appear on none, so we do not promise them. If your phone ever lets you pick a network by hand and you are on the country plan, pick Orange.

Yes, and it is one of the least intuitive things in the catalogue. Réunion sits about 9,000 km from Paris, but it is legally EU territory, and our Europe regional packages list it among their covered countries — we verified this on 12 September 2026 and “RE” is there alongside France, Spain and the Canary Islands, inside the 75-country Europe Max list. Some Africa regional packages and the Discover global packages include it too. The practical call: for an island-only trip the Réunion country plan is cheaper per gigabyte; if you are combining Réunion with mainland France or the rest of Europe, one Europe package covers the whole trip. Check the live pricing block on this page before buying two separate plans.

It depends sharply on where you stand. Piton de la Fournaise is one of the most active volcanoes on Earth and the usual visitor route crosses the Plaine des Sables — a cinder plain reached by a dirt track — and ends at the Pas de Bellecombe viewpoint and car park, where the descent into the Enclos Fouqué begins. The viewpoints and car park are high and exposed and usually have some signal. Once you drop into the Enclos, cross the lava fields or circle the cone, it becomes patchy or disappears: it is an amphitheatre walled in by hundreds of metres of rock. Treat it as mountain terrain — download the offline map and check the volcano status and access before you set off, because when an eruption is under way the prefecture closes access to the Enclos and you will not learn that from your phone once you are down there.

The cirques, pitons and remparts of Réunion have been on the UNESCO World Heritage list since 2010, and they are tropical high mountain. Cilaos and Salazie have reasonable coverage in the villages — Cilaos, Hell-Bourg, Grand Îlet — because they are inhabited and have roads, however improbable those roads look; on the trails and ravine floors they do not. Mafate is different: it is the only one of the three with no road access at all. You walk in or you arrive by helicopter. Some 800 to 900 people live in the îlets inside the cirque, so it is not an electronic desert — mobile service was brought in from antennas on the overlooking Maïdo and Dos d'Ane sites and reaches îlets including La Nouvelle, Marla, Grand Place, Roche Plate, Îlet à Bourse and Aurère. But that is line-of-sight coverage from the rim: expect it at the îlets, and expect nothing on the trails, in the ravines or under the remparts. No blanket “island-wide coverage” claim survives contact with Mafate. Plan it like a trek: gîte booked, map downloaded, someone who knows your route.

You can, but only in the authorised areas, and this is a legal prohibition rather than cautious advice. After the run of attacks that began in 2011 — about two dozen in total, eleven of them fatal, the most recent fatality in 2019 — a prefectural order introduced in 2013 banned swimming and wave-riding board sports outside the lagoon and the equipped or supervised zones. That framework is still in force, renewed and amended annually; the current text dates from February 2025. It applies within 300 metres of the coast and covers swimming, surfing, bodyboarding, longboarding and paddleboarding. Where there is no signage, the default is prohibited. In practice there is plenty of room: the reef-sheltered west-coast lagoon at L'Hermitage, La Saline and Saint-Pierre is where island beach life happens, and Boucan Canot, Roches Noires, L'Étang-Salé and the Baie de Saint-Paul have shark nets and lifeguards — though the nets are not deployed every single day, so check the local daily status. Surfing is permitted only in the designated experimental zones with the reinforced shark-watch teams on duty. One thing did get easier in 2025: snorkelling with mask, fins and snorkel was re-authorised inside the 300 m band.

The island runs on UTC+4 all year and does not change its clocks, which catches people out. Because mainland France and Spain do change theirs, the gap moves: Réunion is three hours ahead of Paris and Madrid in winter and two hours ahead in summer. And note the trap — Réunion does not run on Paris time despite being France. Do the arithmetic before you promise anyone a call time.

The euro. Réunion is inside the eurozone, so a European traveller changes nothing and pays no currency conversion fee, and European cards work normally everywhere. If you are coming from outside the eurozone, budget for your bank's conversion charges and carry some cash for markets and small shops. Prices are French prices: this is not a cheap tropical destination, and much of what is on the shelves arrives by sea.

The south-west Indian Ocean cyclone season runs from 15 November to 30 April, peaking in January and February, and Météo-France in Réunion is the WMO-designated regional specialised centre for the whole basin. The Préfet declares the alert level on that basis: pré-alerte (yellow), orange, red, and violet for a major cyclone with gusts above 200 km/h, then a phase de sauvegarde once the threat has passed. When a high alert is declared the instruction is to stay indoors. The real risk to your connection is usually not the mast but the power: hotel Wi-Fi depends on a router and the router depends on mains electricity, so it fails before the mobile network does. Large sites have backup power and the network normally holds up, if degraded. The useful precautions are the ordinary ones — carry a power bank, download maps and important documents in advance, and know where the official alert channel is. An eSIM gives you data, not electricity.

Most of our Réunion plans are data-only, so use WhatsApp, Telegram or any internet calling app, which is what everyone does anyway. The important exception is emergencies: emergency numbers dial from any phone with signal, even with no active plan and no credit, so 112 will always work. If you genuinely need a French number to receive bank or booking SMS, what you need is a line with a number, or simply to keep your usual line active alongside — which is exactly what having the eSIM on the second slot allows.

Before, on Wi-Fi. Installing an eSIM needs a connection, and the worst moment to discover your phone is not compatible or the QR will not scan is at the Roland Garros baggage belt at three in the morning. The sane sequence is: buy at home, install the profile over your own Wi-Fi, leave the line switched off, and turn it on when you land by enabling data roaming on that specific line. It takes two minutes and removes the only stressful moment of the trip.