Marais de Yiyi
Coastal marshes near Sinnamary with a visitor house and boardwalk over the swamp.
Updated 3 September 2026
The Yiyi marshes spread behind the coast between Sinnamary and Iracoubo, a mosaic of wet savanna, swamp forest and open water, and the Maison de la Nature on the road gives the territory's easiest wetland access: a boardwalk out over the swamp, an observation platform, and guided canoe outings onto the channels. Hoatzins rustle in the bushes along the water and caimans lie in the channels.
The landscape
- The boardwalk - the walkway out over the swamp from the visitor house.
- The hoatzins - the prehistoric-looking birds in the waterside bushes.
- The wet savanna - the open flooded grassland behind the coast.
- The canoe outings - guided trips onto the channels.
When to go
July to November is the dry season with concentrated wildlife. The wet season floods the savanna and changes the birdlife. Early morning and late afternoon are best.
What to expect
The boardwalk is short and the reserve's depth needs the guided canoe trips, which run on a schedule. Mosquitoes are fierce at dusk. Big caimans are seen occasionally, not reliably.
Nearby
Sinnamary is west, and Kourou is east.
What to pack for Marais de Yiyi
Chosen from what this place is for. Tap a kit for the full checklist.
- Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
- Quick-dry clothing - Board shorts or synthetics that shrug off spray and dry fast. Find on Amazon
- Binoculars - The single best wildlife tool - even a compact pair transforms a sighting. Find on Amazon
- Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon
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