September weather forecast
Omupo, Nigeria

September

Weather in September

September, the first month of the autumn in Omupo, is also a moderately hot month, with temperature in the range of an average low of 21.2°C (70.2°F) and an average high of 28.5°C (83.3°F).

Temperature

The commencement of September records an average high-temperature of a still moderately hot 28.5°C (83.3°F), barely varying from August's 27.8°C (82°F). September brings Omupo a consistent average low-temperature of 21.2°C (70.2°F).

Heat index

During September, the heat index is estimated at a very hot 35°C (95°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
The standards for the heat index are set for locations in shade and under light breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

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

Rainfall

The month with the most rainfall is September, when the rain falls for 28.5 days and typically aggregates up to 164mm (6.46") of precipitation.

Daylight

In Omupo, the average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 06:32 and sunset at 18:48. On the last day of September, sunrise is at 06:29 and sunset at 18:32 WAT.

Sunshine

The average sunshine in September is 6.3h.

UV index

May through September, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: An average maximum UV index of 6 in September leads to these recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.

Frequently asked questions

How hot is September?
In September, the average high-temperature and low-temperature are 28.5°C (83.3°F) and 21.2°C (70.2°F) respectively. In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 35°C (95°F).
What are the most humid months?
The months with the highest humidity are August and September, with an average relative humidity of 88%.
What is the average humidity in September?
The average relative humidity in September is 88%.
What is the wettest month?
September is the month with the most rainfall. Rain falls for 28.5 days and accumulates 164mm (6.46") of precipitation.
How much does it rain in September?
In Omupo, in September, during 28.5 rainfall days, 164mm (6.46") of precipitation is typically accumulated.
What is the average length of the day in September in Omupo?
In September, the average day length is 12h and 10min.
When are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 06:32 and sunset at 18:48. On the last day of the month, in Omupo, sunrise is at 06:29 and sunset at 18:32 WAT.
How long on average sun shines in September?
In Omupo, the average sunshine duration in September is 6.3h.
What are the months with the lowest UV index?
May through September, with an average maximum UV index of 6, are months with the lowest UV index in Omupo.
What is the UV index intensity in September?
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Omupo, Nigeria
  • Average high temperature in September: 28.5°C

The warmest month (with the highest average high temperature) is February (37.4°C).
The month with the lowest average high temperature is August (27.8°C).

  • Average low temperature in September: 21.2°C

The month with the highest average low temperature is March (23.6°C).
The coldest months (with the lowest average low temperature) are January and December (20.2°C).

Average pressure in September
Omupo, Nigeria
  • Average pressure in September: 1012.3mbar

The month with the highest atmospheric pressure is July (1013mbar).
The month with the lowest atmospheric pressure is March (1008.7mbar).

Average wind speed in September
Omupo, Nigeria
  • Average wind speed in September: 6.7km/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 (6km/h).

Average humidity in September
Omupo, Nigeria
  • Average humidity in September: 88%

The months with the highest relative humidity are August and September (88%).
The month with the lowest relative humidity is January (35%).

Average rainfall in September
Omupo, Nigeria
  • Average rainfall in September: 164mm

The wettest month (with the highest rainfall) is September (164mm).
The driest month (with the least rainfall) is December (1mm).

Average rainfall days in September
Omupo, Nigeria
  • Average rainfall days in September: 28.5 days

The month with the highest number of rainy days is August (29 days).
The month with the least rainy days is December (1.3 days).

Average daylight in September /
Average sunshine in September
Omupo, Nigeria
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 42min).

  • Average sunshine in September: 6h and 2min

The months with the most sunshine are January and December (Average sunshine: 10h and 0min).
The month with the least sunshine is August (Average sunshine: 5h and 30min).

Average sunshine days in September
Omupo, Nigeria
  • Average sunshine days in September: 0.9 days

The month with the most sunshine days is December (28 days).
The month with the least sunshine days is August (0.8 days).

Average UV index in September
Omupo, 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 May, June, July, August and September (UV index 6).

Average cloud cover in September
Omupo, Nigeria
  • Average cloud cover in September: 66

The month with the most cloud cover is August (Cloud cover 72).
The month with the least cloud cover is December (Cloud cover 6).

Average visibility in September
Omupo, 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).

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