Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Kourou is from September, October. — consistent weather climate
🌡Hot & dry
| Score | 54 | 52 | 54 | 50 | 45 | 47 | 47 | 57 | 69 | 68 | 50 | 52 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Rainy | Rainy | Hot & rainy | Hot & rainy | Hot & rainy | Rainy | Hot & rainy | Hot & rainy | Hot & dry | Hot & dry | Hot & rainy | Hot & rainy |
| Temperature | 24–27°C | 24–27°C | 24–28°C | 24–28°C | 24–28°C | 23–28°C | 24–29°C | 24–30°C | 25–30°C | 25–30°C | 25–29°C | 24–28°C |
| Feels like | 27–31°C | 27–31°C | 27–32°C | 28–32°C | 28–32°C | 28–33°C | 28–34°C | 28–35°C | 29–36°C | 29–36°C | 29–34°C | 28–32°C |
| Precipitation | 356mm 30 days | 315mm 30 days | 276mm 30 days | 513mm 30 days | 682mm 30 days | 536mm 30 days | 329mm 30 days | 173mm 20 days | 80mm 13 days | 91mm 16 days | 246mm 29 days | 415mm 30 days |
| Sunshine | 7.2h ☀︎ 61% | 6.4h ☀︎ 54% | 6.8h ☀︎ 56% | 5.6h ☀︎ 46% | 4.6h ☀︎ 38% | 6.0h ☀︎ 48% | 8.7h ☀︎ 70% | 10.9h ☀︎ 88% | 11.1h ☀︎ 91% | 10.9h ☀︎ 91% | 8.4h ☀︎ 70% | 6.3h ☀︎ 53% |
| Wind | NE · 19 km/h | NE · 20 km/h | NE · 20 km/h | NE · 19 km/h | E · 17 km/h | E · 15 km/h | E · 14 km/h | E · 15 km/h | E · 16 km/h | E · 16 km/h | E · 16 km/h | E · 18 km/h |
| Humidity (%) | 84% | 83% | 81% | 85% | 89% | 90% | 88% | 84% | 81% | 80% | 85% | 87% |
| Day length | 11.9h | 12.0h | 12.1h | 12.2h | 12.4h | 12.4h | 12.4h | 12.3h | 12.1h | 12.0h | 11.9h | 11.8h |
Most travelers converge on Kourou in November and December just as heavy equatorial rains return to swamp the coast, completely bypassing September and October when the skies are clear, the sea is calm, and the spaceport town is at its tranquil best.
Kourou is an improbable collision of equatorial jungle, Atlantic surf, and the European space program. Visitors travel to this humid outpost on the French Guiana coast drawn by the colossal launchpads of the Guiana Space Centre and the offshore penal ruins, but life here is entirely at the mercy of the Intertropical Convergence Zone. When the weather turns, the sky opens up with a violence that drowns out the Atlantic swell, turning roads into red mud and grounding boat trips. Knowing when the cloud cover breaks makes the difference between watching rockets gleam under blazing equatorial light or staring into an impenetrable wall of warm gray water.
August through October constitutes the dry season, and it is the undisputed sweet spot for visiting Kourou. By September, the relentless sheets of rain that define the rest of the year retreat, leaving behind long, unbroken days of blazing sunshine and a coastal breeze that keeps the air circulating. While temperatures hover around 30 degrees and the humidity means your body registers several degrees hotter, the heat is sharp and clean rather than suffocatingly muggy.
This is the window when Kourou functions exactly as you hope it will. Catamarans depart the mouth of the Kourou River without fighting vicious coastal squalls, carrying visitors smoothly across the open water to the palm-fringed ruins of the Îles du Salut. Along the coast at Plage des Roches, the Atlantic loses its churning turbulence, and late afternoons around Pointe des Roches become a gathering point for watching the tide slip out under golden light.
Crucially, this period is surprisingly quiet. Despite having the clearest skies of the entire year, visitor numbers stay remarkably low through September and October. You can tour the vast expanse of the Guiana Space Centre without fighting crowds, and the red-dirt tracks leading into the surrounding coastal forest remain dry enough to explore without bogging down.
November marks the arrival of Kourou's absolute crowd peak, followed by a bustling December, yet the calendar works against anyone arriving now. The equatorial dry window slams shut with startling haste. Rain intensity surges, and by December, heavy cloud decks return to dump massive downpours across the coastal plain.
The contradiction of this period is palpable. The town fills with engineers, families, and travelers fleeing the European winter, yet the physical reality outside is a return to soaking humidity and gray horizon lines. Ocean crossings to Île Royale turn choppy and wet, with swell battering the small landing quays.
If you find yourself in Kourou during these closing months of the year, prepare for your plans to be interrupted by sudden, drenching cloudbursts that flood the town's low-lying avenues within minutes. Everything takes on a damp patina, and outdoor exploration requires watching the sky constantly for bruised purple clouds rolling in off the Atlantic.
The first quarter of the year is a transitional slog through persistent, rolling dampness. January and February are heavily waterlogged, with rain falling frequently throughout the day, leaving the earth perpetually saturated and the air thick with moisture. The trade winds blow hard off the ocean, bringing welcome ventilation but also driving salt spray and sudden squalls straight onto the beachfront.
March occasionally offers what locals call a small dry break, where rainfall eases just enough to allow consecutive dry afternoons, but the reprieve is fleeting. The Kourou River runs thick and swollen with jungle runoff, carrying dark silt into the coastal shallows.
It is an atmospheric, moody time to be here if you enjoy the brooding romance of the tropics, but it requires patience. Spaceport tours remain fascinating regardless of weather, yet any venture requiring calm seas or clear skies remains an uphill gamble against daily rain.
From April through June, the skies over French Guiana open completely. May is the wettest and bleakest month of the year, drowning the landscape under hundreds of millimeters of water delivered in intense, prolonged bursts that swamp storm drains and make stepping outdoors feel like entering a warm waterfall.
During this period, sunshine drops to a meager few hours a day, filtering through an endless ceiling of low, oppressive cloud. The air feels overwhelmingly thick, clinging to your skin from the moment you wake up. Outdoor comfort hits its annual floor. Even short walks from your car to a doorway require heavy rain gear, and the red clay tracks outside the paved town center dissolve into impassable trenches of slurry.
Unless your journey to the Guiana Space Centre is mandatory, cross this quarter off your itinerary. The town hunkers down indoors under the roar of corrugated roofs, maritime transport to the islands is frequently disrupted by heavy squalls, and the coast loses every shred of color under a blanket of torrential gray.