Cotonou monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Cotonou

Cotonou average temperature chart (Celsius) Cotonou average temperature chart (Fahrenheit)
Average monthly temperatures in Cotonou (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 31.1 32 32.1 31.6 30.9 29.2 27.9 27.8 28.5 29.7 31.1 31
°F 87.9 89.6 89.8 88.9 87.6 84.5 82.3 82.1 83.2 85.5 87.9 87.8

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Cotonou monthly rainfall chart (mm) Cotonou monthly rainfall chart (inches)
Average monthly rainfall in Cotonou (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 14 40 83 135 198 321 137 63 112 133 49 21
inches 0.6 1.6 3.3 5.3 7.8 12.6 5.4 2.5 4.4 5.2 1.9 0.8
Rainy days 1 3 6 10 14 18 12 9 11 11 5 2

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Cotonou

Cotonou average daily sunshine chart
Average daily sunshine Cotonou
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 7.1 7.7 7.3 7.5 7.1 5 4.4 4.7 5.4 6.8 8.3 7.5

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Cotonou average minimum / maximum temperatures (Celsius) Cotonou average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Cotonou (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 23.4 24.9 25.3 25 24.2 23.3 23 23.1 23.2 23.8 23.6 23.8
Max °C 31.3 32.2 32.3 31.8 31.1 29.3 28.1 28 28.6 29.9 31.3 31.2
Min °F 74 76.7 77.5 77 75.5 73.9 73.3 73.5 73.8 74.8 74.4 74.8
Max °F 81.1 83.3 83.8 83.1 81.7 79.3 77.9 77.9 78.6 80.2 81.3 81.5

Sea temperature

The graph below shows the average sea temperature.

Cotonou average sea temperature chart (Celsius) Cotonou average sea temperature chart (Fahrenheit)
Average sea temperature around Cotonou in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 27.6 28.3 28.8 29 29.1 27.9 26 25.3 26.1 27.6 28.7 28.3
°F 81.7 82.9 83.9 84.1 84.4 82.2 78.8 77.5 79 81.6 83.7 83

Wind speed

The graph below shows the average wind speed.

Cotonou average winspeed by month (km/h) Cotonou average winspeed by month (mph)
Average wind speed in Cotonou (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 12 14 14 14 11 12 16 16 13 11 11 9
mph 7 9 9 9 7 7 10 10 8 7 7 5

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Cotonou relative humidity averages
Average relative humidity in Cotonou
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
77% 78% 78% 80% 82% 85% 85% 85% 84% 83% 81% 78%

Other monthly averages

UV index Best time to go?

Cotonou weather stats

Cotonou weather statistics
Hottest month: March 32.1°C 89.8°F
Driest month: January 14mm 0.6ins
Sunniest month: November 8.3hrs
Coldest month: July 27.9°C 82.2°F
Wettest month: June 321mm 12.6ins
Warmest sea: May 29.1°C 84.4°F
Map showing location of Cotonou (6.36536, 2.41833)

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