Every country, and the places worth the trip 26,398 places across 240 countries Guess the country
Meridiela.
Home/Countries/Mauritius/Nature & outdoors/Flat Island and Ilot Gabriel

Flat Island and Ilot Gabriel

Two low islands north of Mauritius with a lighthouse, an old quarantine station and a shallow lagoon between them.

Updated 14 October 2026

Typeisland
WhereRiviere du Rempart
Nearest cityGrand Baie
Best seasonMay to December
Time to allowA full day
Getting thereBy catamaran or speedboat from Grand Baie, about an hour and a half
EntryBoat trips charged

Flat Island, Ile Plate, lies about eleven kilometres north of Mauritius, a low coral and basalt island with a lighthouse built in 1855 on the adjoining Pigeon Rock and the remains of a quarantine station where arriving ships were held during nineteenth-century epidemics; a cemetery from that period survives. Ilot Gabriel sits just south of it, separated by a shallow channel of very clear water that is the reason most trips come: the lagoon between the two islands is sheltered, sandy and good for swimming and snorkelling. Day trips from Grand Baie take an hour and a half each way by catamaran, usually with a barbecue lunch on the beach. Both islands are nature reserves and part of a restoration programme.

Highlights

  • The lagoon channel - the shallow clear water between the two islands.
  • The lighthouse - the 1855 tower on Pigeon Rock.
  • Quarantine ruins - the station buildings and cemetery on Flat Island.
  • Beach and reef - the sand and snorkelling ground on Ilot Gabriel.

When to go

May to December for calmer crossings. The trip is long and exposed, so rough weather cancels it or makes it unpleasant. Book early in the day; boats leave Grand Baie in the morning.

Practical notes

The crossing takes about ninety minutes each way and seas can be rough enough to cause seasickness. Trips are packaged with fixed timings and can be crowded when several boats arrive together. There is no shade or facilities beyond what the boat brings.

Nearby

Coin de Mire lies between the islands and the coast; Grand Baie is the departure point.

What to pack for Flat Island and Ilot Gabriel

Chosen from what this place is for. Tap a kit for the full checklist.

  • Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
  • Your own mask + snorkel - A well-fitting mask is the single biggest comfort upgrade underwater. Find on Amazon
  • Quick-dry towel - A microfibre towel packs small and dries in minutes. Find on Amazon
  • Rash guard or thin wetsuit - Sun cover on the surface and warmth on longer or deeper dives. Find on Amazon

Some links on this page are Amazon affiliate links - if you buy through them we may earn a small commission at no extra cost to you.

All packing kits

Plan your trip

Where to start if Flat Island and Ilot Gabriel is going on the list.

Booking links on this page are affiliate links - if you book through them we may earn a small commission at no extra cost to you. It never changes what we write about a place.

Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.

← More nature & outdoors in Mauritius

One place a week.

A short Friday email about one place worth knowing.