March weather forecast
Cotonou, Benin

March's climate in Cotonou unfolds with a continuation of rising temperatures and a surge in rainfall. Unsurprisingly, it is evident that March records the highest low temperature of 25.9°C (78.6°F) compared to other months. Although the UV index stays at 12 units, the total daylight does see a boost, providing an average of 12.1 hours per day. March presents a significant escalation in the average rainfall, reaching 74mm (2.91"), showcasing a distinctively wet month when juxtaposed with its predecessors. Concluding with a sea temperature of 29°C (84.2°F), March extends relentless warmth and humidity.

Temperature

The month of March, characterized by an average high of 31.9°C (89.4°F) and a low of 25.9°C (78.6°F), is recognized as the warmest.

Heat index

The average heat index in March is computed to be an extremely hot 43°C (109.4°F). Stay on guard: Heat exhaustion and heat cramps are predicted. Ongoing effort can cause heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The average relative humidity in March is 77%.

Rainfall

In Cotonou, in March, during 4 rainfall days, 74mm (2.91") of precipitation is typically accumulated. Throughout the year, there are 75 rainfall days, and 1308mm (51.5") of precipitation is accumulated.

Sea temperature

March through May and November, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Cotonou.
Note: Swimming, diving, and similar water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as very agreeable and pleasurable for lengthy periods without discomfort.

Daylight

In Cotonou, Benin, the average length of the day in March is 12h and 5min.
On the first day of the month, sunrise is at 07:02 and sunset at 19:02. On the last day of March, in Cotonou, Benin, sunrise is at 06:49 and sunset at 18:59 WAT.

Sunshine

In Cotonou, the average sunshine in March is 7.2h.

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 of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily maximum UV index of 12 in March translates into the following instructions:
Put into effect every essential safeguard, as unprotected skin and eyes might burn instantly. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Apply generously and frequently a broad-spectrum SPF 30+ sunscreen every two hours, or immediately after swimming or any outdoor exercise. Warning! The reflection of sand and water increases the UV dose.