Cotonou
Benin
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Cotonou, Benin

The best months for a swim in Cotonou, Benin, are January through March, August, November and December, with a perfect temperature - varying between 25°C (77°F) and 29°C (84.2°F), and scarce rainfall.

January, like December, is another tropical winter month in Cotonou, Benin, with average temperature varying between 23.8°C (74.8°F) and 30.8°C (87.4°F). An excellent water temperature of 27°C (80.6°F) and only 1 rainfall days, with 9.2mm (0.36") of accumulated rainfall, makes January a prime for swimming and other water activities. Weather in January »

February, the last month of the winter, in Cotonou, is also a hot month, with temperature in the range of an average high of 31.6°C (88.9°F) and an average low of 25.4°C (77.7°F). The ideal sea water temperature of 28°C (82.4°F) and only 2 rainfall days, with 36.8mm (1.45") of accumulated rainfall, makes February the best time for swimming and other water activities. Weather in February »

The first month of the spring, March, is also a hot month in Cotonou, Benin, with average temperature fluctuating between 25.9°C (78.6°F) and 31.9°C (89.4°F). An excellent water temperature of 29°C (84.2°F) and only 4 rainfall days, with 73.8mm (2.91") of accumulated rainfall, makes March a prime for swimming and other water activities. Weather in March »

April, the same as March, in Cotonou, Benin, is a hot spring month, with average temperature varying between 31.6°C (88.9°F) and 25.6°C (78.1°F). In Cotonou, the average high-temperature is essentially the same as in March - a still tropical 31.6°C (88.9°F). Weather in April »

May, the last month of the spring, in Cotonou, is another hot month, with average temperature ranging between max 31°C (87.8°F) and min 24.6°C (76.3°F). In May, the average high-temperature is relatively the same as in April - a still tropical 31°C (87.8°F). Weather in May »

June, the first month of the summer, in Cotonou, is still a warm month, with average temperature fluctuating between 23.7°C (74.7°F) and 29.2°C (84.6°F). In June, the average high-temperature is almost the same as in May - a warm 29.2°C (84.6°F). Weather in June »

July, the same as June, is another warm summer month in Cotonou, Benin, with average temperature fluctuating between 23.7°C (74.7°F) and 28°C (82.4°F). In July, the average high-temperature is almost the same as in June - a still warm 28°C (82.4°F). Weather in July »

The last month of the summer, August, is another warm month in Cotonou, Benin, with average temperature varying between 23.4°C (74.1°F) and 27.8°C (82°F). The ideal sea water temperature of 25°C (77°F) and only 5 rainfall days, with 64.9mm (2.56") of accumulated rainfall, makes August the best time for swimming and other water activities. Weather in August »

The first month of the autumn, September, is still a warm month in Cotonou, Benin, with average temperature fluctuating between 23.6°C (74.5°F) and 28.4°C (83.1°F). In Cotonou, the average high-temperature in September is almost the same as in August - a still warm 28.4°C (83.1°F). Weather in September »

October, like September, in Cotonou, Benin, is a moderately hot autumn month, with average temperature varying between 29.6°C (85.3°F) and 23.8°C (74.8°F). In October, the average high-temperature is practically the same as in September - a still moderately hot 29.6°C (85.3°F). Weather in October »

The last month of the autumn, November, is a tropical month in Cotonou, Benin, with average temperature varying between 24.3°C (75.7°F) and 30.9°C (87.6°F). The ideal sea water temperature of 29°C (84.2°F) and only 4 rainfall days, with 41.4mm (1.63") of accumulated rainfall, makes November the best time for swimming and other water activities. Weather in November »

The first month of the winter, December, is also a hot month in Cotonou, Benin, with temperature in the range of an average low of 23.8°C (74.8°F) and an average high of 30.8°C (87.4°F). An excellent water temperature of 28°C (82.4°F) and only 2 rainfall days, with 19.6mm (0.77") of accumulated rainfall, makes December a prime for swimming and other water activities. Weather in December »

How much does it rain in Cotonou?

In Cotonou, during the entire year, the rain falls for 75 days and collects up to 1308.3mm (51.51") of precipitation.

What is the driest month in Cotonou?

January is the month with the least rainfall in Cotonou, Benin. Rain falls for 1 days and accumulates 9.2mm (0.36") of precipitation.

What is the month with the shortest days in Cotonou?

Months with the shortest days in Cotonou are January, November and December, with an average of 11.8h of daylight.

What is the month with the highest UV index in Cotonou?

February through May, August through October, with an average maximum UV index of 12, are months with the highest UV index.

What is the warmest month in Cotonou?

March is the warmest month, with an average high-temperature of 31.9°C (89.4°F) and an average low-temperature of 25.9°C (78.6°F).

What are the months with the warmest sea water in Cotonou?

March through May and November, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.

What is the least humid month in Cotonou?

With an average relative humidity of 76.5%, April is the least humid month.

What is the most humid month in Cotonou?

June is the most humid month, with an average relative humidity of 84%.

What is the rainiest month in Cotonou?

June is the month with the most rainfall in Cotonou, Benin. Rain falls for 15 days and accumulates 356mm (14.02") of precipitation.

When are the longest days in Cotonou?

June and July, with an average of 12.5h of daylight, are months with the longest days in Cotonou.

What is the month with the least sunshine in Cotonou?

The month with the least sunshine in Cotonou, Benin, is July, with an average of 4.4h of sunshine.

What is the coldest month in Cotonou?

With an average high-temperature of 27.8°C (82°F) and an average low-temperature of 23.4°C (74.1°F), August is the coldest month in Cotonou, Benin.

What month is the sea coldest in Cotonou?

August is the month with the coldest seawater, with an average sea temperature of 25°C (77°F).

What month has the most sunshine in Cotonou?

The month with the most sunshine in Cotonou, Benin, is November, with an average of 8.1h of sunshine.

What is the month with the lowest UV index in Cotonou?

December is the month with the lowest UV index in Cotonou, with an average maximum UV index of 10.
Average temperature - Cotonou, Benin
Average humidity - Cotonou, Benin
Average rainfall - Cotonou, Benin

The wettest month (with the highest rainfall) is June (356mm).
The driest month (with the least rainfall) is January (9.2mm).

Average rainfall days - Cotonou, Benin
Average sea temperature - Cotonou, Benin

The best months for swimming (with the highest average sea temperature) are March, April, May and November (29°C).
The coldest month (with the lowest average sea temperature) is August (25°C).

Average daylight / Average sunshine - Cotonou, Benin

Months with the longest days are June and July (Average daylight: 12.5h).
Months with the shortest days are January, November and December (Average daylight: 11.8h).

The month with the most sunshine is November (Average sunshine: 8.1h).
The month with the least sunshine is July (Average sunshine: 4.4h).

Average UV index - Cotonou, Benin

Months with the highest UV index are February, March, April, May, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).