How Many Islands Does Seychelles Have? Full Guide

The Official Island Count: 115 and What It Means

If you're asking how many islands Seychelles has, the answer most sources give you is 115. That's the figure the Republic of Seychelles uses officially, it's what appears in most geographic references, and it's the number that frames every conversation about the archipelago's scale. But the moment you start working with that number practically — planning routes, booking transfers, understanding what's actually reachable — it starts to feel less like a fact and more like a starting point.

I spent a decade based in the Seychelles before I started ranging further into the Indian Ocean, and even after all that time, the 115-island count was something I treated with a degree of professional scepticism. Not because it's wrong, but because it flattens an enormous amount of complexity into a single tidy figure. The Seychelles archipelago is spread across roughly 1.4 million square kilometres of the western Indian Ocean — an ocean territory larger than France, Germany, and Spain combined. Packing 115 islands into that space and calling it a single destination is a bit like saying the Greek islands are one place.

What the number doesn't tell you: the islands range from the massive, mountainous, forested bulk of Mahé — 27 kilometres long, home to the capital Victoria, and the entry point for virtually every international visitor — down to exposed coral cays that disappear at high tide and wouldn't register on most maps. The geological, ecological, and logistical differences between those extremes are not minor variations. They're fundamental.

So when you're using island count as a planning frame, use it as a prompt to ask better questions. Not "how many islands?" but "which type, where, and how do I get there?"

Why the Number 115 Is Widely Accepted but Contested

The 115 figure is the Republic of Seychelles' official count, and it's the one I'll use throughout this guide because it's the most consistently applied. But geographers and marine surveyors have produced counts ranging from 107 to over 150, depending on whether exposed reef structures, seasonal sandbars, and very small rocky outcrops are included. Aldabra Atoll alone — a UNESCO World Heritage Site and one of the most significant coral atoll systems on the planet — contains multiple distinct landmasses within a single atoll structure, and how you count those affects your total.

The practical consequence for travellers is zero. Whether the true number is 112 or 118, you're still working with the same access constraints, the same inter-island transport infrastructure, and the same weather windows. But understanding that the count is a convention rather than a precise geographic fact does help calibrate your expectations. This is not an archipelago with 115 neatly defined, equally accessible islands. It's a vast scatter of land across open ocean — some of it ancient granite rising from the sea floor, some of it barely above the waterline.

Granitic vs Coralline Islands: Two Completely Different Worlds

This is the split that actually matters. The Seychelles 115 islands divide into two fundamentally different geological categories — granitic and coralline — and understanding that division is more useful for trip planning than any brochure comparison you'll find. I've stood on both types, in different seasons, and the experience is different enough that I'd argue they're separate destinations that happen to share a flag and a currency.

The granitic islands are what most people picture when they think of Seychelles: enormous rounded boulders the colour of old bone, piled against each other at the shoreline, with dense tropical forest pushing down to the beach edge. That look — specific, ancient, unlike anything else in the Indian Ocean — comes from the fact that these islands are the exposed peaks of a submerged continental shelf, the Mascarene Plateau, which makes them among the oldest oceanic islands on Earth. You don't get that geology in the Maldives. You don't get it in the Andamans. It's specific to here.

The coralline islands are something else entirely. Flat, low, ecologically fragile, built from accumulated coral and sand rather than ancient rock. Some are proper atolls with lagoons. Others are little more than elevated reef platforms. The visual drama of the granitic islands is completely absent — but the marine ecology around many of the outer coralline islands is, in my direct experience, more pristine than anything I've encountered in the inner group.

And that contrast — dramatic granite versus ecologically rich coral — is the central tension of any serious Seychelles trip.

Named Granitic Islands: The 42 That Define the Seychelles Look

There are approximately 42 granitic islands in the Seychelles archipelago, and they cluster in the inner island group, relatively close to Mahé. Praslin — home to the Vallée de Mai, where the endemic coco de mer palm grows in a forest that feels genuinely prehistoric — is the second largest and the one most worth the inter-island flight or ferry. La Digue sits east of Praslin, reachable by a 15-minute ferry crossing, and contains Anse Source d'Argent: the beach that launched a thousand Seychelles marketing campaigns, with its signature rust-coloured granite formations rising from bottle-green shallows.

I have complicated feelings about La Digue. The beach is real — the photographs don't lie about the geology. But the island's popularity has compressed what was once a genuinely quiet experience into something that requires either very early arrival (before 08:00 to beat the day-trip crowds from Praslin) or a willingness to share the frame with forty other people. Silhouette Island, by contrast — larger, less visited, requiring a 45-minute boat transfer from Mahé — gives you similar granite drama with a fraction of the foot traffic. That's where I'd spend my nights if I were doing the inner islands again.

Coralline Atolls: Flat, Remote, and Ecologically Distinct

The coralline islands account for the majority of the Seychelles island count, and most of them sit in the outer island groups — scattered across hundreds of kilometres of open Indian Ocean, south and southwest of the granitic inner cluster. Aldabra Atoll is the most significant: a raised coral atoll, UNESCO-listed, home to the world's largest population of giant Aldabra tortoises — roughly 100,000 of them — and a marine environment that I'd rank among the most intact I've seen anywhere in the Indian Ocean basin.

But intact doesn't mean accessible. Getting to Aldabra requires either a research or conservation permit, a liveaboard vessel capable of open-ocean passage, or a very expensive private charter. There is no resort. There is no scheduled ferry. The logistics are closer to a polar expedition than a beach holiday, and I mean that as a factual description, not a deterrent. The Farquhar Group, the Amirantes, the Alphonse Group — these outer coralline islands each have their own access profile, their own ecology, and in some cases a single small resort operating on a fly-in or boat-in model with limited availability and prices that reflect the cost of running a remote operation.

Flat terrain, extraordinary reefs, and a logistical commitment most visitors aren't prepared to make.

Inner Islands vs Outer Islands: Access Reality Check

The inner and outer islands of Seychelles are not just a geographic distinction — they're a practical division that determines whether your trip is straightforward or genuinely complex. The inner islands, centred on Mahé, Praslin, and La Digue, are connected by scheduled air services, regular inter-island ferries, and a functioning tourism infrastructure that, while not as engineered-for-ease as the Maldives, is reliable enough for most travellers. The outer islands are a different proposition entirely.

I've navigated outer island access in the Seychelles across multiple trips, and the honest summary is this: if you haven't built in buffer days for weather delays, you will get caught. The Indian Ocean between the inner and outer groups is open water, and the sea state changes faster than most travellers expect. I once waited three days on Desroches — a small coral island in the Amirantes group — for a charter flight window to reopen after a weather system moved through. The resort was fine. The unplanned cost was not.

The outer islands reward the effort. But the effort is real, and it has a financial cost that compounds quickly when you factor in charter flights, extended stays, and the premium pricing that remote operations charge because they can.

Getting to Outer Islands vs Maldives Remote Atolls

This is where the Seychelles outer islands and the Maldives diverge most sharply, and it's worth being direct about it. The Maldives has industrialised remote atoll access. Seaplane networks, domestic flight schedules, speedboat transfers timed to resort check-ins — the entire system is engineered to move guests from Malé to a distant atoll with minimal friction. I've done the transfer to Baa Atoll and to Lhaviyani, and both times the logistics were almost frictionless. The Maldives has spent decades and significant capital building that infrastructure.

The Seychelles outer islands have not. Charter flights to Alphonse or Desroches operate on limited schedules, often tied to specific resorts, and the booking windows are narrow — particularly during peak season (July to August and December to January), when capacity fills months in advance. There is no seaplane network equivalent. Liveaboard vessels operate in the outer groups, and for serious divers they're often the most practical option, but they require advance planning of a different order than booking a Maldivian resort.

Field Hack: For outer island access, Island Conservation Society Seychelles and the operators running Alphonse Island Resort and Desroches Island Resort are the two most reliable points of contact for current charter availability. Book the flight before you book the accommodation — not simultaneously. Charter slots disappear faster than rooms.

How Many Seychelles Islands Are Actually Inhabited

Of the Seychelles 115 islands, roughly 33 are considered inhabited — and that figure needs immediate qualification. "Inhabited" in the Seychelles context covers everything from Mahé, with a population of approximately 80,000 people, to islands with a single resort staff rotation and no permanent residents in any meaningful sense. If you're using inhabited status as a proxy for traveller infrastructure, it's a misleading shortcut.

The genuinely populated islands — where people live year-round, where there are schools, markets, and a functioning community — number closer to a dozen. Mahé holds around 90% of the total national population of roughly 98,000. Praslin accounts for most of the remainder, with La Digue a distant third at around 3,000 permanent residents. Beyond those three, you're largely looking at small fishing communities on islands like Silhouette, Frégate, and a handful of others where the line between "inhabited" and "staffed resort island" blurs considerably.

Honest Warning: Don't book a "private island resort" in the outer Seychelles expecting the Maldivian model of a sandbank with a water villa. Several outer island properties I've visited were marketed as exclusive private islands but operated with visible infrastructure constraints — generator noise audible from the beach at 19:30, limited fresh water, and food quality that didn't match the room rate. The isolation is genuine. The luxury, in some cases, is not.

Population Spread: Mahé, Praslin, La Digue and Beyond

Mahé's dominance in the population figures isn't just a demographic fact — it's a practical travel reality. Victoria, the capital, sits on Mahé's northeastern coast and is the entry point for all international flights into Seychelles International Airport. Every inter-island connection — ferry to Praslin, charter flight to the outer islands, liveaboard departure — begins here. If you're spending fewer than ten days in Seychelles and trying to reach the outer islands, you're spending a disproportionate amount of time transiting through Mahé.

Praslin's population of roughly 10,000 is concentrated in the northwest, around the ferry terminal at Baie Sainte Anne and the main settlement at Grand Anse. The island is large enough to warrant a hire car or bicycle — taxis exist but availability outside the main areas is unreliable after 18:00. La Digue, at 10 square kilometres, is navigated almost entirely by bicycle, which is both the island's charm and its practical limitation if you're carrying significant luggage. The ferry from Praslin to La Digue runs multiple times daily and costs approximately 200 SCR each way — one of the better-value inter-island transfers in the archipelago.

Island Distribution Across the Indian Ocean

The geographic spread of the Seychelles archipelago is something that catches most visitors off guard. On a standard map, the islands appear as a modest cluster in the western Indian Ocean, northeast of Madagascar. But the actual distribution — from the inner granitic group near 4°S latitude down to Aldabra at roughly 9°S, and spread across nearly 10 degrees of longitude — means the archipelago spans a distance comparable to driving from London to Warsaw. That's not a cluster. That's a chain.

This matters practically because the Indian Ocean doesn't behave uniformly across that spread. The Northwest Monsoon (November to March) affects the inner and outer islands differently — in the inner group it brings rain and rougher seas on the western coasts, but the eastern beaches remain relatively sheltered. In the outer Amirantes, the same monsoon period can make small-boat transfers genuinely dangerous, not inconvenient. I've seen the sea state off Desroches in December move from flat calm to 2.5-metre swells in under four hours. That's not the same as Phuket in October, where the weather at least announces itself with a visible build. Here it arrives without much ceremony.

Season and Conditions: The inter-monsoon periods — April to May and October to November — are the most reliable windows for outer island access. April in particular gives you calmer seas, reasonable visibility for diving (typically 20–30 metres around the Amirantes), and thinner crowds than the European summer peak. The trade-off is that some resorts operate reduced schedules in the shoulder months.

Spread vs Density: Seychelles vs Maldives Archipelago Scale

The Maldives has 26 atolls and over 1,000 islands compressed into a relatively narrow north-south chain, roughly 800 kilometres long and rarely more than 130 kilometres wide. The density of islands within that chain means inter-atoll distances are manageable, and the seaplane and speedboat infrastructure I mentioned earlier makes sense economically because the demand is concentrated. The Seychelles 115 islands scattered across 1.4 million square kilometres of ocean is a fundamentally different geometry — lower density, greater distances, and an infrastructure investment that the tourism volume doesn't yet justify at Maldivian scale.

What this means for you: if you're comparing a Seychelles outer island trip to a Maldivian remote atoll trip at equivalent price points, the Seychelles version will almost certainly involve more logistical complexity for similar or greater isolation. That's not a criticism of the Seychelles — it's an accurate positioning. The outer islands here are rawer, less engineered, and ecologically more diverse than most Maldivian atolls I've visited. But they demand more of you in return.

Which Island Groups Are Worth Visiting and Why

If you're asking how many islands Seychelles has in the context of planning an actual trip, the answer you need isn't 115 — it's closer to five or six realistic options, depending on your budget, timeline, and tolerance for logistical friction.

For a first visit of ten to fourteen nights, the inner granitic group covers the essential Seychelles experience: Mahé for arrival and the Morne Seychellois National Park interior, Praslin for the Vallée de Mai (entry 350 SCR, worth every rupee, best visited before 09:00 when the light filters through the coco de mer canopy at a low angle), and La Digue for the granite beach experience — with the caveat I've already noted about crowd management. Silhouette Island deserves more attention than it gets; the 45-minute boat transfer from Mahé's northwest coast is a genuine deterrent for day-trippers, which is exactly why I'd recommend it.

For experienced island travellers who have already done the Maldives and Southeast Asia and want something that doesn't feel engineered: the Alphonse Group or the Amirantes, on a liveaboard or at one of the two or three small resorts operating there. The fly-fishing on Alphonse is among the best in the Indian Ocean — bonefishing on a coral flat that Southeast Asia simply cannot replicate. The diving around the outer atolls, particularly around St. Joseph Atoll, is consistently better than anything I've found in the inner group.

But I'd steer most travellers away from the ultra-premium private island resorts in the inner group that charge Maldivian rates for a product that doesn't match. Several of them are trading on the Seychelles name rather than the quality of the experience. And I wouldn't recommend attempting the outer islands on a trip of fewer than ten days total — the buffer days you need for weather aren't optional, they're structural.

Accessibility, Value, and Effort Compared to Southeast Asia Islands

Southeast Asia does certain things better than the Indian Ocean will ever manage, and it's worth saying that plainly. If you want density of island options at accessible price points — Koh Lanta versus Koh Tao versus the Mergui Archipelago, all within a few hours of each other and connected by cheap domestic flights — Thailand and Myanmar offer a flexibility that the Seychelles simply cannot. The Seychelles archipelago breakdown doesn't include a budget tier. There isn't one. The cheapest guesthouses on La Digue are still expensive by Southeast Asian standards, and the inter-island transport costs compound fast.

What the Seychelles offers in return is geological uniqueness — those granitic formations exist nowhere else in the Indian Ocean — and an ecological integrity in the outer islands that Southeast Asia's more heavily trafficked archipelagos largely lost two decades ago. That's the honest trade. You're paying for scarcity and specificity, not for luxury infrastructure. If you go in expecting the latter, you'll be disappointed. If you go in understanding the former, the Seychelles archipelago — all 115 contested, scattered, geologically improbable islands of it — is worth every complicated transfer.

---

Frequently Asked Questions

How many islands does Seychelles have?

The Republic of Seychelles officially counts 115 islands, and that's the figure used in most geographic and government references. But it's worth knowing that different surveys have produced counts ranging from around 107 to over 150, depending on whether small exposed reef structures and seasonal sandbars are included. For practical travel purposes, the 115 figure is the one to work with. What matters more than the exact count is understanding that those 115 islands divide into two geological types — granitic and coralline — and two geographic groups — inner and outer — with dramatically different access profiles, ecosystems, and infrastructure levels. The number 115 is a starting point, not a destination guide.

What is the difference between granitic and coralline islands in Seychelles?

Granitic islands are the ones that define the Seychelles visual identity — ancient continental rock, enormous rounded boulders, dense forest, and mountainous interiors. There are approximately 42 of them, clustered in the inner island group around Mahé, Praslin, and La Digue. They sit on a submerged continental shelf and are among the oldest oceanic islands on Earth. Coralline islands are geologically opposite: flat, low-lying, built from accumulated coral and sand, and ecologically structured around reef systems rather than terrestrial forest. They make up the majority of the outer island groups and include Aldabra Atoll. The marine environments around coralline outer islands are generally more pristine than those around the inner granitic group, but they're significantly harder and more expensive to reach.

How many islands in Seychelles are inhabited?

Approximately 33 of the Seychelles 115 islands are classified as inhabited, but that figure includes islands with only a single resort operation and no permanent community. The islands with genuine year-round populations number closer to a dozen. Mahé holds roughly 80,000 of the national population of around 98,000, making it by far the most populated island. Praslin is second with approximately 10,000 residents, and La Digue third with around 3,000. Beyond those three, most "inhabited" islands in the outer groups are staffed rather than settled — meaning resort employees on rotation rather than communities with schools, markets, and permanent infrastructure.

What are the Inner Islands and Outer Islands of Seychelles?

The inner islands are the granitic group clustered around Mahé, within roughly 100 kilometres of the capital Victoria. They include Praslin, La Digue, Silhouette, Frégate, and around 40 other islands, and they're connected by scheduled ferries and inter-island flights. The outer islands are the coralline atolls and island groups scattered across the wider Indian Ocean — the Amirantes, the Farquhar Group, the Alphonse Group, and Aldabra Atoll among them. Outer island access requires charter flights, liveaboard vessels, or private charters, with no scheduled public transport equivalent. Weather windows are critical for outer island travel, and buffer days for delays are not optional — they're a structural part of any outer island itinerary.

How spread out are the Seychelles islands across the Indian Ocean?

The Seychelles archipelago spans approximately 1.4 million square kilometres of the western Indian Ocean — a territory larger than the combined land area of France, Germany, and Spain, though the actual land area of all 115 islands combined is only around 455 square kilometres. The spread runs from the inner granitic group near 4°S latitude down to Aldabra Atoll at roughly 9°S, and across nearly 10 degrees of longitude east to west. That's a linear distance comparable to London to Warsaw. The practical consequence is that the Indian Ocean behaves differently across that spread — weather systems, sea states, and diving conditions in the outer Amirantes are not the same as those around Mahé, and treating them as equivalent will cost you time and potentially strand you somewhere comfortable but unplanned.