East coast (Flacq district), Mauritius, Indian Ocean
Ile aux Cerfs
The honest guide to Ile aux Cerfs: the east-coast lagoon island day trip from Trou d'Eau Douce — how to get there, what the catamaran trips actually include, the GRSE waterfall add-on, and how to dodge the crowds.
In short
Ile aux Cerfs at a glance
Ile aux Cerfs is a flat, palm-and-casuarina island sitting inside the lagoon off Mauritius's east coast, a few hundred metres beyond the village of Trou d'Eau Douce in the Flacq district. It is the single most-sold excursion on the island, and the appeal is straightforward: a wide turquoise lagoon, long white-sand beaches and warm shallow water you can wade out into for fifty metres. Almost nobody stays here — there is one resort island (Le Touessrok's Ilot Mangenie next door) and the Bernhard Langer-designed Ile aux Cerfs golf course, but the public beach is a pure day-trip product. The honest read: it is genuinely beautiful early and late, and a hot, busy car park of catamarans, jet skis and parasail boats from roughly 11am to 3pm. How good your day is depends almost entirely on which boat you pick and what time you cross.
Ile aux Cerfs is the excursion every Mauritius rep sells you in the first ten minutes, and the one most people get slightly wrong. It’s a flat, palm-fringed island a few hundred metres off Trou d’Eau Douce on the east coast, ringed by a turquoise lagoon shallow enough to wade out fifty metres into — and on the right morning it’s as good as the photos. The catch is volume. Almost nobody stays on the public side, so the whole place runs on a single rhythm: empty at 9am, a car park of catamarans and jet skis by midday, empty again by late afternoon. Your day is made or broken by what time you cross.
There are really two ways to do it, and the cheap one is often the better one. The public speedboat shuttle from the Trou d’Eau Douce jetty costs about ₨50-150 (£0.80-2.30) return and lets you set your own schedule — take the first boat, snorkel the lagoon, walk north to the quiet sandbar away from the parasail boats, and you’ve had the island at its best for the price of a coffee. The full catamaran day (around ₨28-47pp) is easier and more social, and it bundles in the GRSE waterfall cruise and a barbecue lunch, but the big party boats can be loud and they all arrive at the same midday hour. Whichever you pick, agree any watersports price before you get on the boat and use a permitted operator that carries enough life jackets — GOV.UK is specific about that one.
The route
Ile aux Cerfs is a half-day to full-day trip, not a base, so this is a single sensible day rather than a multi-day skeleton — built from Trou d'Eau Douce, the launch village, with the two realistic ways of doing it. Times are crossing and drive legs from the east-coast resort strip around Belle Mare and Trou d'Eau Douce.
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Option A — independent
Public boat from Trou d'Eau Douce, your own pace
Drive or taxi to Trou d'Eau Douce (10-15 minutes from the Belle Mare hotels) and take the public speedboat shuttle from the main jetty — about ₨50-150 (~£0.80-2.30) return, running on demand through the day. You land on the public beach with no fixed return time, so you set the schedule: arrive by 9.30am for an empty beach, snorkel the lagoon, walk to the quieter northern sandbar away from the watersports zone, and head back before the 11am catamarans arrive. Bring your own water, snacks and reef shoes; the beach kiosks are pricey and limited.
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Option B — catamaran
Full catamaran day with the GRSE waterfall
A typical full-day catamaran from the east coast runs roughly ₨1,800-3,000pp (~£28-47) and is the easier, more social version: pickup from Trou d'Eau Douce or a hotel jetty, a cruise to the GRSE (Grande Riviere Sud-Est) waterfall at the river mouth a few kilometres south, an on-board or beach barbecue lunch, a snorkel stop on the reef, then beach time on Ile aux Cerfs itself. Smaller speedboat versions cost more but the big party catamarans can be loud and crowded — check group size before booking. Book through an operator with a Ministry of Tourism permit and confirm the boat carries enough life jackets (GOV.UK).
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Add-on
A round of golf or a watersports hour
If you've booked the Ile aux Cerfs golf course (the 18-hole Bernhard Langer layout), players cross on the course's own free ferry from Trou d'Eau Douce rather than the public boat — green fees are resort-priced, so reserve ahead. On the beach itself, parasailing, tubing and a banana-boat run are sold by the hour; agree the price before you get on the boat (it isn't fixed), and only go with a permitted operator carrying life jackets (GOV.UK).
Where to base yourself
Pick one or two bases rather than moving every night.
Trou d'Eau Douce (the launch village)
££ mid-rangeThe fishing village directly across the lagoon from the island and the jumping-off point for every boat. Guesthouses, self-catering apartments and a few Creole restaurants make it the practical, lower-cost base if Ile aux Cerfs is the reason you've come east — you can catch the first public boat before the day-trippers arrive and walk to dinner.
Best for: Independent travellers who want the island on their doorstep
Belle Mare (east-coast resort strip)
£££ premiumThe long white-sand lagoon 10-15 minutes north of Trou d'Eau Douce, lined with four- and five-star resorts that run their own boats to Ile aux Cerfs. This is the classic east-coast beach week: gorgeous in the dry southern-winter months, but genuinely breezy and cooler when the southeast trade winds blow up in July and August.
Best for: Resort comfort with the island a short transfer away
Stay elsewhere and day-trip
££ mid-rangeMost visitors don't stay on the east coast at all — they base on the calmer, better-stocked west around Flic en Flac or the north around Grand Baie and do Ile aux Cerfs as a one-off catamaran day. From the west it's a 60-75 minute drive each way to Trou d'Eau Douce, so a hotel-collected catamaran trip with transport included usually makes more sense than self-driving across the island.
Best for: Travellers based west or north doing the island as a single excursion
Getting around Ile aux Cerfs
There is no bridge to Ile aux Cerfs and no way to walk or swim across — every visit is by boat from Trou d'Eau Douce, a 5-10 minute crossing. The cheapest route is the public speedboat shuttle from the village jetty (about ₨50-150 / ~£0.80-2.30 return), which leaves you free to set your own return time; the alternative is a packaged catamaran or speedboat day (~₨1,800-3,000pp / £28-47) that bundles the GRSE waterfall, lunch and snorkelling. Getting to the launch village itself depends on your base: from the Belle Mare resorts it's a 10-15 minute drive, but from Flic en Flac on the west coast or Grand Baie in the north it's a 60-75 minute cross-island haul, which is why a hotel-collected catamaran trip usually beats self-driving. If you do drive, you're on the left like the UK and a hire car runs ~£25-40/day; otherwise agree a fixed taxi fare before you set off, as Mauritian taxis aren't metered. On the island, it's walking only — paths through the casuarinas link the public beach, the kiosks and the quieter northern sandbar.
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