April weather forecast
Cotonou, Benin

In April, the city of Cotonou experiences a blend of high temperatures and remarkable precipitation levels. While the average high and low temperatures stay constant, this month marks the most prolonged daylight duration of 12.3 hours. Reflecting on the tempestuous conditions, April's precipitation reaches a record high of 137mm (5.39"), characterizing it as an exceptionally wet month in the city's climate history. Despite having this peak rainfall level, the UV index remains at 12 units and there is no significant change in sea temperature. This month thus combines a warm climate with an increased frequency of rainfall.

Temperature

As April takes its course, Cotonou's average high-temperature registers at a still tropical 31.6°C (88.9°F), closely aligning with the preceding month. An average low-temperature of 25.6°C (78.1°F) marks the month of April in Cotonou.

Heat index

The average heat index in April is computed to be a scorching 42°C (107.6°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an estimation of the warmth sensation when considering humidity levels. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

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

Rainfall

In Cotonou, during April, the rain falls for 7 days and regularly aggregates up to 137mm (5.39") of precipitation. Throughout the year, there are 75 rainfall days, and 1308mm (51.5") of precipitation is accumulated.

Sea temperature

The months with the warmest seawater in Cotonou are March through May and November, with an average sea temperature of 29°C (84.2°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Cotonou, the average length of the day in April is 12h and 16min.
On the first day of the month, sunrise is at 06:48 and sunset at 18:59. On the last day of April, sunrise is at 06:37 and sunset at 18:57 WAT.

Sunshine

In Cotonou, the average sunshine in April is 7.3h.

UV index

February through May, August through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an extreme health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 12 in April translates into the following instructions:
Carry out all important precautions, unprotected skin could get burns in no time. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Apply generously and frequently reapply a sunscreen with SPF 30 or more even on cloudy days, particularly after a swim or outdoor exercise. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.