Cotonou Weather in September

With daytime temperatures of 28°C (82°F) and nighttime lows of 24°C (75°F), September in Cotonou brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 134 mm (5.3 in) falls on average.

Rainfall in Cotonou in September

Typically, you can expect about 11 days of rain this month, with 134 mm (5.3 in) on average. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Cotonou in September

Expect highs of 28°C (82°F) in Cotonou in September, with nights dropping to around 24°C (75°F). Overall, the month follows a fairly predictable daily temperature pattern. At 24°C (75°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.

Sunshine in Cotonou in September

The area enjoys a moderate level of sunlight, with around 165 hours. It's a good balance between sunny and cloudy days.

Wind Speed in Cotonou in September

Average wind conditions reach 5 m/s (10 knots) in September. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

Average water temperature in September

At 24°C (75°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

For Cotonou itself, August generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.