Aidan Karley · CC BY-SA 4.0Mayotte
“One of the world's largest lagoons, and the EU's poorest region.”
Mayotte sits in the Comoros archipelago but voted in successive referendums to stay French, becoming an overseas department in 2011 and an EU outermost region in 2014. The Comoros still claims it. The result is a place with the euro, French administration and EU status alongside the lowest incomes and the weakest infrastructure of any European region — a contrast that shapes everything, including a long-running migration crisis from the neighbouring islands.
The natural asset is the lagoon: around 1,500 square kilometres enclosed by a double barrier reef, one of very few in the world, with humpback whales from July to October, resident dolphins, turtles nesting on the beaches of Petite-Terre and an S-shaped pass that divers rate highly. Cyclone Chido in December 2024 caused severe damage across the island, and reconstruction is ongoing — check the current state of accommodation and services before booking.
Highlights
The lagoon
One of the largest enclosed lagoons in the world, ringed by a double barrier reef — humpback whales from July to October, resident dolphins, manta rays and the S Pass that divers come for.
Îlot Bandrélé and the sandbanks
White sandbanks that appear at low tide inside the lagoon, reached by boat for snorkelling and picnics on sand that disappears again by evening.
Mont Choungui
A steep volcanic plug in the south, climbed in about ninety minutes of scrambling for a view over the whole lagoon and the reef line.
Petite-Terre and Dziani Dzaha
The smaller island with the airport, a brilliant green crater lake fed by sulphurous water, turtle beaches at Moya and the ferry crossing to Mamoudzou.
Entry requirements for Mayotte
Checking your passport…
We don't hold entry details for this passport group yet.
Before you fly
The detail
- Passport validity
- Most destinations want validity beyond your stay, and some want six months. Check yours against the return date.
- Onward travel
- Airlines may ask for a return or onward ticket at check-in.
- Health
- French healthcare framework but stretched facilities; the hospital in Mamoudzou is the only significant one. Malaria has been largely eliminated but dengue and chikungunya occur. Tap water quality has been affected by infrastructure problems — check locally and drink bottled if in doubt.
- Money
- Euro. Cards work in Mamoudzou and larger shops; carry cash for villages and markets. Prices are high because everything is shipped in.
When to go
BestMay–Oct. AvoidDec–Mar.
Dry season opens — calm lagoon, good visibility.
The band above each month is our editorial verdict - it weighs crowds, prices and access as well as weather. The line is average daily temperature, the bars are monthly rainfall. Select a month for the figures. Climate figures: ERA5 reanalysis via Open-Meteo, 2005–2024 normals.
What it costs
A day in Mayotte
Comfortable · sample day
≈ $135
Line items are real prices we track. The daily budget is an editorial estimate for this level, not their sum.
Where this sits among 244 countries we have costed
Whale season from July to October is the one period with real visitor demand. Accommodation supply is limited and post-cyclone reconstruction has tightened it further.
Updated Aug 2026 · Editorial synthesis — French overseas department pricing and operator sampling (2025–2026) · confidence low
Excludes international flights - they depend on where you fly from.
Regions to know
5Petite-Terre
The airport island — Dziani Dzaha crater lake, Moya's turtle beaches and the Dzaoudzi rock.
Mamoudzou and the east
The main town and administrative centre, the market and the barge terminal.
The north
Mtsamboro, the ylang-ylang plantations and the islets off the northern reef.
The south
Mont Choungui, Bandrélé's sandbank, Saziley's nesting beaches and the mangroves.
The lagoon and reef
The S Pass, the double barrier reef, the whale grounds and the sandbanks that appear at low tide.
Practical guide
Getting there
Dzaoudzi–Pamandzi on Petite-Terre is served by Air Austral, Corsair and Ewa Air, mainly from Paris, Réunion and Madagascar. A frequent barge connects Petite-Terre with Mamoudzou on the main island.
Getting around
A hire car is the practical choice; the main island has a single ring road that is congested around Mamoudzou. The barge runs constantly between the two islands. Boat charters are how the lagoon is reached.
Money & costs
Euro. Cards work in Mamoudzou and larger shops; carry cash for villages and markets. Prices are high because everything is shipped in.
Safety
Petty and sometimes violent crime is a real problem by French standards, and there is periodic social unrest linked to migration and living conditions. Avoid displaying valuables, do not leave anything in a parked car, and take local advice on which areas to avoid at night.
Health
French healthcare framework but stretched facilities; the hospital in Mamoudzou is the only significant one. Malaria has been largely eliminated but dengue and chikungunya occur. Tap water quality has been affected by infrastructure problems — check locally and drink bottled if in doubt.
SIM & internet
Orange, SFR and Only; EU roaming applies for EU customers. 4G around Mamoudzou and the main road; patchier in the south and on the reef.
Driving
French road rules. The ring road is narrow, winding and congested at both ends of the day around Mamoudzou. Roadblocks during periods of social unrest are a recurring feature — take local advice before setting out.
Rules change - verify with an official source before you rent.
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MayotteFrequently asked questions
Is my Schengen visa valid here?
No, not automatically. Mayotte is a French department and an EU outermost region but is outside Schengen, with its own entry regime. EU/EEA and Swiss nationals enter with an ID card, and most Schengen-exempt nationalities enter visa-free, but visa nationals need a visa specifically endorsed for Mayotte. Check before you fly.
What is the situation after Cyclone Chido?
Chido hit in December 2024 and caused severe damage to housing, power and water infrastructure across the island. Reconstruction is ongoing and the picture changes. Confirm directly with accommodation and dive operators that they are running before booking, and read a current advisory.
When are the whales?
Humpbacks are in the lagoon from roughly July to October, calving inside the reef, which is unusual and makes for close and unhurried encounters. Resident dolphins are year-round. Turtle nesting on Petite-Terre peaks between April and June.