September weather forecastNikki, Benin

Weather in September

September sees the transition from the rainy season to the dry season. The weather exhibits a shift in patterns from those in August, with a significant fall in the rainfall and humidity levels. There is a slight increase in the average wind speed, brushing off the excess humidity from the previous months. The cloud cover begins to thin out, marking the end of the peak rainy season. This transition makes September the perfect time to experience Nikki's unique blend of climates.

Temperature

Nikki indicates an average high-temperature of a still moderately hot 29.4°C (84.9°F) in September, showing minor variation from August's 28.4°C (83.1°F). In September, the temperature drops to an average of 21.9°C (71.4°F) at night.

Heat index

Throughout September, the heat index is evaluated at a sweltering 37°C (98.6°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In September, the average relative humidity is 85%.

Rainfall

In Nikki, during September, the rain falls for 23.5 days and regularly aggregates up to 100mm (3.94") of precipitation. In Nikki, during the entire year, the rain falls for 139.7 days and collects up to 607mm (23.9") of precipitation.

Daylight

The average length of the day in September is 12h and 11min.
On the first day of September, sunrise is at 06:37 and sunset at 18:56. On the last day of the month, sunrise is at 06:35 and sunset at 18:38 WAT.

Sunshine

The average sunshine in September is 7.4h.

UV index

The average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, a daily UV index of 7 turns into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.