September weather forecast
Uyo, Nigeria

As September steps into Uyo, the city begins to dry out, offering residents a slight respite with a decrease in rainfall to 293mm (11.54"). While dampness prevails, there is a tangible transition from the intensive downpours of the previous months. Temperature and relative humidity maintain their previous month’s levels, providing weather stability. The easing rain allows for an increase in hours of sunshine and improved visibility. Tapering rains and the uptick in sunshine hours foreshadow the gradual retreat of the monsoon.

Temperature

September records an average high-temperature of a still moderately hot 28.7°C (83.7°F), indicating a minor variation from the preceding month. During September, Uyo records an average temperature of 22.5°C (72.5°F) at night.

Heat index

For September, the heat index is calculated to be a very hot 36°C (96.8°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to 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.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

July through September, with an average relative humidity of 88%, are the most humid months.

Rainfall

In September, the rain falls for 28.6 days. Throughout September, 293mm (11.54") of precipitation is accumulated. In Uyo, during the entire year, the rain falls for 299.7 days and collects up to 2126mm (83.7") of precipitation.

Daylight

In September, the average length of the day in Uyo is 12h and 9min.
On the first day of the month, sunrise is at 06:21 and sunset at 18:34. On the last day of September, sunrise is at 06:15 and sunset at 18:20 WAT.

Sunshine

In September, the average sunshine is 4.2h.

UV index

In Uyo, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.