September weather forecastOnikoko, Nigeria
September
Weather in September
September, the first month of the autumn in Onikoko, is still a warm month, with an average temperature varying between 29°C (84.2°F) and 21.7°C (71.1°F).Temperature
The transition into September reveals an average high-temperature of a still moderately hot 29°C (84.2°F), mirroring a close resemblance to August. An average nighttime temperature of 21.7°C (71.1°F) is noted during the month of September.Heat index
During September, the heat index is calculated to be a fiery hot 36°C (96.8°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. 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. 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 are extremely vital to babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.
Humidity
The months with the highest humidity are August and September, with an average relative humidity of 87%.Rainfall
September is the month with the most rainfall. Rain falls for 25 days and accumulates 128mm (5.04") 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 06:39 and sunset at 18:54. On the last day of September, sunrise is at 06:34 and sunset at 18:38 WAT.
Sunshine
In Onikoko, the average sunshine in September is 6.2h.UV index
The months with the lowest UV index are June through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 6 during September morphs into the following directions:
Guard against overexposure. Protection from sun-induced harm is essential. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Onikoko, Nigeria
- Average high temperature in September: 29°C
The warmest month (with the highest average high temperature) is February (37.6°C).
The month with the lowest average high temperature is August (27.9°C).
- Average low temperature in September: 21.7°C
The months with the highest average low temperature are March and April (23.9°C).
The coldest month (with the lowest average low temperature) is January (20.5°C).
Average pressure in September
Onikoko, Nigeria
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is July (1013mbar).
The month with the lowest atmospheric pressure is March (1008.8mbar).
Average wind speed in September
Onikoko, Nigeria
- Average wind speed in September: 6.8km/h
The windiest month (with the highest average wind speed) is April (9.8km/h).
The calmest month (with the lowest average wind speed) is November (5.9km/h).
Average humidity in September
Onikoko, Nigeria
- Average humidity in September: 87%
The months with the highest relative humidity are August and September (87%).
The month with the lowest relative humidity is January (36%).
Average rainfall in September
Onikoko, Nigeria
- Average rainfall in September: 128mm
The wettest month (with the highest rainfall) is September (128mm).
The driest month (with the least rainfall) is December (1mm).
Average rainfall days in September
Onikoko, Nigeria
- Average rainfall days in September: 25 days
The month with the highest number of rainy days is August (26.5 days).
The month with the least rainy days is December (1.2 days).
Average daylight in September /
Average sunshine in September
Onikoko, Nigeria
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in September: 6h and 12min
The month with the most sunshine is December (Average sunshine: 10h and 0min).
The month with the least sunshine is August (Average sunshine: 5h and 6min).
Average sunshine days in September
Onikoko, Nigeria
- Average sunshine days in September: 3.5 days
The month with the most sunshine days is December (29 days).
The month with the least sunshine days is August (2.8 days).
Average UV index in September
Onikoko, Nigeria
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, October, November and December (UV index 7).
The months with the lowest UV index are June, July, August and September (UV index 6).
Average cloud cover in September
Onikoko, Nigeria
- Average cloud cover in September: 67
The month with the most cloud cover is August (Cloud cover 74).
The month with the least cloud cover is December (Cloud cover 7).
Average visibility in September
Onikoko, Nigeria
- Average visibility in September: 6km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are August and September (6km).
