When you’re waiting for a launch window in Kourou, there are always those few empty hours when you don’t quite know what to do. The Montagne des Singes trail is our favorite answer to that moment: a short, shaded loop, accessible to almost everyone, ending with a stunning panorama over the forest, the estuary of the Kourou River and, on a clear day, the Ariane launch pad of the Guiana Space Centre. It’s exactly the kind of walk you slip in between two stops, with no special gear, leaving a memory far stronger than its difficulty would suggest.
Here is our complete guide, written after walking it many times across different seasons.
Why climb the Montagne des Singes in Kourou
The Montagne des Singes is a “mountain” in name only: it’s a forested hill peaking at around 130 metres, on the western edge of Kourou. But its position makes it a natural lookout over the entire space zone.
What we really love here:
- Accessibility: no need to be athletic, the climb is gradual and the trail is well maintained.
- Shade: the forest canopy shields you from the sun almost the whole way, a real luxury under French Guiana’s equatorial climate.
- Wildlife: you regularly come across monkeys (squirrel monkeys, capuchins), toucans and macaws flying overhead with loud calls above the canopy.
- The final view: from the summit, a 180° panorama over the coastal plain and the CSG facilities.
It’s also a great way to wait wisely when an Ariane 6 or Vega launch is pushed back by a few hours, which happens very often here.
Practical info: duration, distance, difficulty
Here are the concrete figures to plan your outing properly. They correspond to the classic loop, the one most visitors take.
- Distance: roughly 4 to 5 km as a loop (depending on the variant chosen).
- Duration: 1h30 to 2h round trip at an easy pace, photo breaks included.
- Elevation gain: around 130 m, spread over gentle climbs.
- Difficulty: easy to moderate. A few sections are a little steep and slippery after rain, but nothing technical.
- Waymarking: the trail is generally well marked; stay on the paths to protect the environment.
- Price: free, open access.
- Starting point: a car park on the edge of Kourou, about ten minutes by car from the town centre.
What gear to bring
You don’t need trekking equipment, but a few basics make all the difference:
- Closed shoes such as hiking trainers (the trails are earthy and slippery).
- 1 to 1.5 L of water per person: the humidity makes you sweat more than you’d think.
- Mosquito repellent: essential, especially at the forest edge and in the rainy season.
- Cap and sunscreen for the summit section, which is more exposed.
- Phone or camera: the view really deserves a few shots.
When to go: weather, timing and launch windows
In French Guiana, timing is everything. The territory lives to the rhythm of two main seasons, and the hike isn’t the same depending on when you go.
The best time
The dry season, from mid-July to mid-November, is ideal: drier trails, clear views, fewer mosquitoes. It’s also the most comfortable period to string together visits across the region.
During the rainy season (December to June, with a short “March summer”), the walk remains doable but the ground becomes slippery and the view can be blocked by clouds. In that case, favour the early morning, between 7am and 9am, when the air is clearer and the heat bearable.
Timing the hike around an Ariane launch
This is where the spot’s strategic value lies. The Guiana Space Centre offers free tours and launch viewing sessions (with prior registration, limited places). But a launch is often announced and then pushed back several hours for weather or technical reasons.
Our local advice:
- Book your CSG tour and your launch viewing well in advance via the official website.
- Keep the Montagne des Singes as a buffer activity on the day: if the launch slips to the evening, you’ve got something to fill the afternoon right nearby.
- Mind the time difference: French Guiana is 5h behind Paris in winter and 6h in summer. Double-check the local time announced for the launch.
Important: from the summit you’ll have a view over the area, but watching a lift-off happens from the official viewing sites, not from the trail (which may in fact be closed during sensitive launch phases).
Recommended route and trail highlights
Here’s how we experience the loop, step by step:
- The start in the understory: you step straight under the canopy. It’s cool, humid, alive. Listen closely: monkeys are often heard before they’re seen.
- The gradual climb: the trail winds without ever becoming exhausting. A few roots and natural steps set the pace of the ascent.
- The summit lookout: the day’s reward. The coastal plain opens up, you can make out the Kourou River and the space facilities in the distance.
- The loop descent: you head back down via a variant that avoids retracing the same path, with different forest atmospheres.
A few recommendations to make the most of it:
- Set off early for the cool air and the best chances of spotting wildlife.
- Move in silence at times: that’s how you catch the animals by surprise.
- Never feed the monkeys: it’s bad for them and creates aggressive behaviour.
- Leave with all your rubbish. The site is fragile and busy.
Combining the hike with the rest of Kourou and French Guiana
The Montagne des Singes fits perfectly into a wider stay. Kourou is an excellent base, and a car is essential to explore the department.
Itinerary ideas from Kourou:
- Guiana Space Centre: free tour, the Space Museum, and if possible a viewing of an Ariane 6 or Vega launch.
- Salvation Islands (Îles du Salut): boarding from Kourou for the history-laden archipelago (former penal colony). Allow a full day.
- Beaches and seafront of Kourou for a quiet late afternoon.
And further afield, to extend the journey in French Guiana:
- Cayenne, the capital, with its colourful market and the Place des Palmistes.
- Kaw Marshes for wildlife watching (caimans, birds) at dawn.
- Saint-Laurent-du-Maroni and its Camp de la Transportation, then a trip up the Maroni River by pirogue.
To organise it all without forgetting anything (the mandatory yellow fever vaccine, car rental, the season to aim for), take a look at our complete guide to French Guiana.
Where to stay to explore easily
To enjoy the Montagne des Singes at the right time slot and stay flexible in the face of launch delays, it’s best to have a well-located accommodation and a flexible booking.
At Hostel Toucan, we know this French Guiana rhythm by heart. Our vacation rentals are designed for travellers who want to experience French Guiana independently, with a car right at the door.
What you gain:
- Direct booking, with no platform fees.
- Free cancellation up to 7 days before arrival, perfect when you’re planning your stay around uncertain launch dates.
- WhatsApp support 7 days a week: a delayed launch, a question about the trail, a local tip? We’ll answer.
Discover our accommodations at location-guyane. And if you own a property in French Guiana and would like to entrust it with complete peace of mind, our concierge service is detailed on the owners page.
The Montagne des Singes is exactly the spirit we love to share: a French Guiana that’s easy to access, generous, where a short 1h30 hike offers you the forest, the monkeys and a view of the space adventure. Now it’s your turn.
FAQ
Is the Montagne des Singes hike suitable for families and beginners?
Yes. It’s an easy loop of around 4 to 5 km, 1h30 to 2h of walking with a gentle elevation gain of about 130 m. Closed shoes, water and mosquito repellent are enough. Children old enough to walk manage very well at an easy pace.
Can you watch an Ariane launch from the Montagne des Singes trail?
You get a fine view over the Guiana Space Centre area, but the official viewing of a lift-off takes place from the CSG’s dedicated sites, with free registration in advance. The trail may in fact be closed during sensitive launch phases. Better to use the hike as a buffer activity on launch days.
What is the best time to do this hike in Kourou?
The dry season, from mid-July to mid-November, is ideal: drier trails, clear views and fewer mosquitoes. In the rainy season, favour the early morning (7am-9am) for the cool air and a clearer sky.
How do you get to the Montagne des Singes and do you need a car?
The starting point is on the edge of Kourou, about ten minutes by car from the town centre. In French Guiana, a car is essential for getting around between Kourou, Cayenne and the other sites. Access to the trail is free and open.
