Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Cotonou is from January, August, December. — consistent weather climate
⛈Hot & rainy
| Score | 85 | 75 | 67 | 67 | 61 | 56 | 78 | 82 | 76 | 66 | 69 | 81 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Hot & dry | Hot & dry | Hot & dry | Hot & dry | Hot & rainy | Hot & rainy | Hot & rainy | Pleasant | Hot & rainy | Hot & rainy | Hot & dry | Hot & dry |
| Temperature | 25–30°C | 26–31°C | 27–30°C | 27–30°C | 26–30°C | 25–28°C | 25–27°C | 24–27°C | 25–27°C | 25–28°C | 26–29°C | 25–30°C |
| Feels like | 30–35°C | 31–36°C | 32–36°C | 32–36°C | 31–35°C | 29–32°C | 28–30°C | 27–30°C | 28–32°C | 30–34°C | 31–35°C | 30–35°C |
| Precipitation | 19mm 4 days | 32mm 7 days | 72mm 10 days | 68mm 12 days | 150mm 21 days | 219mm 29 days | 112mm 21 days | 77mm 17 days | 128mm 23 days | 153mm 23 days | 65mm 14 days | 19mm 6 days |
| Sunshine | 10.3h ☀︎ 87% | 10.4h ☀︎ 87% | 8.3h ☀︎ 69% | 8.2h ☀︎ 67% | 7.6h ☀︎ 61% | 6.0h ☀︎ 48% | 7.0h ☀︎ 56% | 7.6h ☀︎ 61% | 6.7h ☀︎ 55% | 7.8h ☀︎ 65% | 10.4h ☀︎ 88% | 10.5h ☀︎ 90% |
| Wind | SW · 18 km/h | SW · 19 km/h | SW · 20 km/h | SW · 19 km/h | SW · 18 km/h | SW · 18 km/h | SW · 20 km/h | SW · 21 km/h | SW · 19 km/h | SW · 16 km/h | SW · 15 km/h | SW · 16 km/h |
| Humidity (%) | 79% | 81% | 82% | 81% | 82% | 85% | 86% | 86% | 86% | 85% | 83% | 79% |
| Day length | 11.8h | 11.9h | 12.1h | 12.3h | 12.4h | 12.5h | 12.4h | 12.3h | 12.2h | 12.0h | 11.8h | 11.8h |
Cotonou is at its undisputed peak in January, when the dry winter air clears the Atlantic skies, the fierce humidity loosens its grip, and the overwhelming holiday crowds of December vanish almost overnight.
Wedged between the brackish expanse of Lake Nokoué and the pounding surf of the Atlantic Ocean, Cotonou is the restless engine of Benin. While the national legislature convenes down the road in historic Porto-Novo, real power, commerce, and daily momentum reside here. It is an unapologetically intense West African metropolis, where fleets of yellow-shirted motorcycle taxis swarm paved boulevards and sandy side streets alike. Travelers come to navigate the labyrinthine trading alleys of Dantokpa Market, step along the palm-fringed shoreline of Fidjrossè, or use the port city as the springboard for journeys deeper into the cradle of Vodun culture. To take Cotonou on its own terms, however, you must understand its moisture: the city spends half the year wrestling with torrential equatorial downpours and the other half basking under intense coastal sun.
January is the crown jewel of Cotonou's calendar. After months of muggy unpredictability and the chaotic peak of year-end visitors, January delivers a crystalline dry season. The skies stay reliably blue for more than ten hours a day, the rains are virtually nonexistent, and the relentless coastal humidity retreats just enough to make daytime walking viable. The streets settle into an energetic, unhurried rhythm. Wandering through the paved avenues of Haie Vive or venturing out to the water's edge at Fidjrossè feels invigorating rather than exhausting.
By February, the heat begins to climb again. The apparent temperature creeps upward, turning midday strolls into serious athletic endurance tests. Even so, the rain holds off, keeping travel straightforward and roads puddle-free. If you want the full sensory immersion of Cotonou—from the open-air stalls along Lake Nokoué to twilight ocean breezes—without ducking under corrugated metal roofs to escape sudden deluges, this is the time to arrive.
As March arrives, the weather turns thick and demanding. The ocean air becomes heavy with moisture, and the heat index pushes into punishing territory. Walking anywhere past mid-morning leaves your clothes soaked through with sweat. For travelers unaccustomed to equatorial coastal heat, simple errands turn sluggish.
Rainfall arrives in earnest through April and May. These are not yet the day-long monsoons of midsummer, but rather sudden, ferocious afternoon squalls that flood low-lying sandy lanes and overwhelm municipal drainage channels. Dantokpa Market transforms into a slick, muddy obstacle course under foot. If you visit during these months, plan your outings strictly around the early morning, retreating to air-conditioned shade by noon.
June is the undisputed low point of the year, bringing over 200 millimeters of rainfall and gray, unrelenting cloud cover. When the major rains strike the Bight of Benin, Cotonou bears the brunt of the storm track. Roads in peripheral districts can turn into impassable red clay mud tracks within an hour, and outdoor plans evaporate.
The Atlantic Ocean churns violently, kicking up heavy sea spray and rough waves that render the beaches unwelcoming. Unless your travel is strictly tied to administrative meetings in the government quarter, avoid June entirely.
In July and August, Cotonou experiences West Africa's curious phenomenon: the short dry season. While Europe swelters, this stretch of the Gulf of Guinea cools down noticeably. Afternoon highs drop into the upper twenties, and a persistent marine breeze sweeps across the waterfront.
August in particular is a hidden gem for travelers seeking comfortable weather without the high-season surge. The cloud deck keeps the harsh tropical sun at bay, making afternoons remarkably pleasant for exploring the crafts villages or taking road excursions east toward Porto-Novo. Rainfall drops significantly, arriving mostly as occasional passing drizzles that rarely disrupt travel.
The cooler break is short-lived. By September, the equatorial trough shifts back, reigniting the humidity and delivering a secondary rainy season. October sees heavy, moisture-laden skies that dump substantial downpours on the city once again.
While not quite as waterlogged as June, October brings a lingering sultriness that makes outdoor activity uncomfortable. The air feels stationary, and the mix of heat and localized street flooding demands patience and flexible transport arrangements.
November marks the abrupt return of dependable sunshine, drying out the city and ushering in the dry season. It also triggers a massive influx of arrivals. By December, Cotonou hits its highest crowd levels of the entire year. The diaspora returns, international travelers arrive for cultural festivals across southern Benin, and the city hums with relentless, non-stop vitality.
The weather in December is glorious—warm, dry, and glowing under ten hours of daily sunshine. However, the sheer volume of people clogs traffic arteries, crowds popular beachside avenues in Fidjrossè, and pushes the city's infrastructure to its limits. It is a thrilling time to witness Cotonou at full volume, but if you prefer the same glorious weather without the gridlock, wait until the calendar flips into January.