September weather forecast
Yoko, Benin

The first month of the autumn, September, is still a warm month in Yoko, Benin, with an average temperature varying between 23.9°C (75°F) and 29.5°C (85.1°F).

Temperature

September's commencement is accompanied by an average high-temperature of a still moderately hot 29.5°C (85.1°F), diverging marginally from August's 28.7°C (83.7°F). In September, the nighttime temperature lowers to an average of 23.9°C (75°F).

Heat index

The heat index in September is evaluated at a very hot 36°C (96.8°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

July through September, with an average relative humidity of 81%, are the most humid months.

Rainfall

In Yoko, during September, the rain falls for 19 days and regularly aggregates up to 64mm (2.52") of precipitation. Throughout the year, there are 148.7 rainfall days, and 481mm (18.94") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 10min.
On the first day of September, sunrise is at 06:42 and sunset at 18:56. On the last day of the month, sunrise is at 06:37 and sunset at 18:41 WAT.

Sunshine

The average sunshine in September in Yoko is 6.3h.

UV index

The months with the lowest UV index in Yoko, Benin, are June, July and September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.