September weather forecast
Iwo, Nigeria

As September sets in Iwo, the weather transitions, with rainfall exhibiting a decline compared to the earlier months. Temperature levels start to rise, hinting at warmer days ahead. While the humidity remains high, the cloud cover starts reducing, leading to an increase in sunshine hours. The climatic highlight this month is notably the highest rainfall of 117mm (4.61"). The wind, yet again, adopts a soothing rhythm, balancing the weather's tropical features.

Temperature

September's average high-temperature is a still moderately hot 29.3°C (84.7°F), maintaining a close comparison with August's 28.3°C (82.9°F). An average low-temperature of 21.9°C (71.4°F) is noted during the nights in September.

Heat index

September's mean heat index is estimated at a torrid 38°C (100.4°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. 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 hold great significance to children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

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

Rainfall

September is the month with the most rainfall. Rain falls for 25 days and accumulates 117mm (4.61") of precipitation.

Daylight

The average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 06:35 and sunset at 18:50. On the last day of September, sunrise is at 06:31 and sunset at 18:34 WAT.

Sunshine

In Iwo, the average sunshine in September is 5.4h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 6 during September translates into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.