September weather forecastOlomu, Nigeria
September
Weather in September
September, the first month of the autumn in Olomu, is also a moderately hot month, with an average temperature ranging between min 21.6°C (70.9°F) and max 29.3°C (84.7°F).Temperature
September's onset records a minor alteration in the average high-temperature to a still moderately hot 29.3°C (84.7°F) from August's 28.2°C (82.8°F). Olomu's nights in September experience an average temperature drop to a pleasant 21.6°C (70.9°F).Heat index
For most parts of September, the heat index is computed to be a fiery hot 38°C (100.4°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.Always consider that heat index estimations are for light winds and places in the shade. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
The most humid month is September, with an average relative humidity of 90%.Rainfall
In Olomu, during September, the rain falls for 25.5 days and regularly aggregates up to 100mm (3.94") of precipitation. Throughout the year, there are 247.3 rainfall days, and 763mm (30.04") 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 06:34 and sunset at 18:49. On the last day of the month, sunrise is at 06:30 and sunset at 18:33 WAT.
Sunshine
The average sunshine in September is 4.9h.UV index
In Olomu, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 6 translates into these guidelines:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Olomu, Nigeria
- Average high temperature in September: 29.3°C
The warmest month (with the highest average high temperature) is January (37°C).
The month with the lowest average high temperature is August (28.2°C).
- Average low temperature in September: 21.6°C
The month with the highest average low temperature is March (23.7°C).
The coldest month (with the lowest average low temperature) is December (20.5°C).
Average pressure in September
Olomu, Nigeria
- Average pressure in September: 1012.5mbar
The month with the highest atmospheric pressure is July (1013.2mbar).
The month with the lowest atmospheric pressure is March (1009.1mbar).
Average wind speed in September
Olomu, Nigeria
- Average wind speed in September: 4.5km/h
The windiest month (with the highest average wind speed) is March (5.8km/h).
The calmest month (with the lowest average wind speed) is November (3.6km/h).
Average humidity in September
Olomu, Nigeria
- Average humidity in September: 90%
The month with the highest relative humidity is September (90%).
The month with the lowest relative humidity is January (49%).
Average rainfall in September
Olomu, Nigeria
- Average rainfall in September: 100mm
The wettest month (with the highest rainfall) is July (113mm).
The driest month (with the least rainfall) is December (5mm).
Average rainfall days in September
Olomu, Nigeria
- Average rainfall days in September: 25.5 days
The month with the highest number of rainy days is July (28.1 days).
The month with the least rainy days is December (4.3 days).
Average daylight in September /
Average sunshine in September
Olomu, 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: 4h and 54min
The month with the most sunshine is December (Average sunshine: 9h and 48min).
The month with the least sunshine is August (Average sunshine: 3h and 54min).
Average sunshine days in September
Olomu, Nigeria
- Average sunshine days in September: 2.1 days
The month with the most sunshine days is December (23 days).
The month with the least sunshine days is July (1.2 days).
Average UV index in September
Olomu, Nigeria
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, October, November and December (UV index 7).
The months with the lowest UV index are July and August (UV index 5).
Average cloud cover in September
Olomu, Nigeria
- Average cloud cover in September: 80
The month with the most cloud cover is August (Cloud cover 83).
The month with the least cloud cover is January (Cloud cover 20).
Average visibility in September
Olomu, Nigeria
- Average visibility in September: 5km
The months with the highest visibility are January, February and December (9km).
The months with the lowest visibility are July, August, September and October (5km).





